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The use of carbon-based particle electrodes in three-dimensional electrode reactors for wastewater treatment
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作者 LU Hua-yu LIU Wei-feng +1 位作者 QIN Lei LIU Xu-guang 《新型炭材料(中英文)》 SCIE EI CAS CSCD 北大核心 2024年第5期973-991,共19页
The use of three-dimensional(3D)electrodes in water treatment is competitive because of their high catalytic efficiency,low energy consumption and promising development.The use of particle electrodes is a key research... The use of three-dimensional(3D)electrodes in water treatment is competitive because of their high catalytic efficiency,low energy consumption and promising development.The use of particle electrodes is a key research focus in this technology.They are usually in the form of particles that fill the space between the cathode and anode,and the selection of materials used is important.Carbon-based materials are widely used because of their large specific surface area,good adsorption performance,high chemical stability and low cost.The principles of 3D electrode technology are introduced and recent research on its use for degrading organic pollutants using carbon-based particle electrodes is summarized.The classification of particle electrodes is introduced and the challenges for the future development of carbon-based particle electrodes in wastewater treatment are discussed. 展开更多
关键词 Environmental pollution three-dimensional electrode technology Carbon-based materials Carbon-based particle electrode
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Electro-enhanced adsorption of As(V)by activated carbon in three-dimensional electrode reactor 被引量:4
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作者 Yong-jian LUO Yun-yan WANG +4 位作者 Hui XU Jia-li DU Ming-fei ZHU Li-min ZHANG Zhu-mei SUN 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2022年第6期2080-2090,共11页
This study focused on As(V)removal by electrosorption in a self-made three-dimensional electrode reactor,in which granular activated carbon(GAC)was used as the particle electrode.Under the optimal conditions,the remov... This study focused on As(V)removal by electrosorption in a self-made three-dimensional electrode reactor,in which granular activated carbon(GAC)was used as the particle electrode.Under the optimal conditions,the removal efficiency of As(V)was 84%,and its residual concentration in solution was 0.08 mg/L.From kinetic investigation,the rate determining steps of the entire process may involve more than two processes:membrane diffusion,material diffusion and physical/chemical adsorption processes.During the desorption process,As(V)can be desorbed from GAC,and the GAC was able to electro-adsorb As(V)again after desorption,which means that the electrode has good cycling performance. 展开更多
关键词 arsenic removal activated carbon ELECTROSORPTION three-dimensional electrode reactor
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Electrochemical degradation of acidified reed pulp black liquor with three-dimensional electrode reactor 被引量:2
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作者 赵静 叶晟 +3 位作者 王云燕 尤翔宇 柴立元 舒余德 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第8期2945-2953,共9页
The electrochemical degradation of reed pulp black liquor containing lignin pretreated by acidification method was investigated using a three-dimensional electrode reactor. Using activated carbon as particle electrode... The electrochemical degradation of reed pulp black liquor containing lignin pretreated by acidification method was investigated using a three-dimensional electrode reactor. Using activated carbon as particle electrode, the effects of p H value, reaction temperature, electrolysis time and current on residual concentration of total organic carbon(TOC) were discussed in detail. The optimal conditions were obtained: pH 2.5, influent flow rate of 200 mL/min, 25 °C, 300 mA and 2h of electrolysis time, and the removal efficiency of TOC maintains at 35.57 %. The results of the electrochemical method indicate that ·OH radicals are produced in activated carbon anode in the electrolysis process and then adsorbed on the activated carbon surface. Microcell consists of ·OH radicals and the absorbed lignin. With the microcell reaction, the lignin is degraded, while the anodic polarized curve illustrates that the lignin is obviously oxidized in the anode. The contributions of direct and indirect electrolyses to the TOC removal ratio are about 50%, respectively. 展开更多
关键词 black liquor three-dimensional electrode electro-catalytic oxidation ·OH radical LIGNIN
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Electrochemical Degradation of o-Chloronitrobenzene by Three-dimensional Electrodes
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作者 MENG Qing-han WANG Jing +1 位作者 LIU Ling CAO Bing 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2012年第5期891-896,共6页
Degradation of o-chloronitrobenzene wastewater was experimentally investigated at a three-dimensional electrode(TDE) with granular activated carbon as the particle electrode, graphite as the anode, and stainless ste... Degradation of o-chloronitrobenzene wastewater was experimentally investigated at a three-dimensional electrode(TDE) with granular activated carbon as the particle electrode, graphite as the anode, and stainless steel plate as the cathode. The kinetic model of o-chloronitrobenzene degradation was studied, and the effects of pH, electrolysis time, particle electrode, electrolyte concentration, and initial concentration of the solution on degradation efficiency were investigated to determine the optimal operating conditions. The degradation of o-chloronitrobenzene by oxidation at the TDE was monitored by chemical oxygen demand(COD) measurements, UV-Vis absorption, and high performance liquid chromatography(HPLC). COD degradation by electrochemical degradation followed pseudo-first order kinetics with respect to the concentration of o-chloronitrobenzene solutions. Optimal reaction conditions included 15 g of activated carbon as the particle electrode, 400 mg/L o-chloronitrobenzene solution containing 0.10 mol/L Na2SO4, pH=3, and 60 min of electrolysis. The UV-Vis absorption spectra and HPLC results illustrate that the benzene ring in o-chloronitrobenzene was rapidly broken down to form aliphatic substances through electrochemical degradation. COD degradation was approximately 98.5% at optimal conditions. 展开更多
关键词 three-dimensional electrode Electrochemical oxidation O-CHLORONITROBENZENE
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Preparation and Electrochemical Characteristics of Three-dimensional Manganese Oxide Micro-supercapacitor Electrode
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作者 Chun-ming Wen Zhi-yu Wen +1 位作者 Zheng You Xiao-feng Wang 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2012年第2期209-213,I0004,共6页
In order to increase the electrode surface area and enhance the charge storage capacity, we study the micro electro mechanical system technology to fabricate three-dimensional high aspect ratio micro-electrode structu... In order to increase the electrode surface area and enhance the charge storage capacity, we study the micro electro mechanical system technology to fabricate three-dimensional high aspect ratio micro-electrode structure based on glass. The anodic constant potential method is employed to deposit manganese oxide as electroactive substances on the micro-electrode surface. Cyclic voltammetry and constant current charge-discharge method are both used to prepare electrode electrochemical performance testing, with a two-dimensional electrode without structure for comparison. Experimental results show that three-dimensional elec- trode structure can effectively enhance the charge storage capacity. At 1.0 mA/cm2 charge- discharge density, the three-dimensional electrode shows a capacitance of 17.88 mF/cm2, seven times higher than the two-dimensional electrode. 展开更多
关键词 Micro-supercapacitor Micro electro mechanical system three-dimensional electrode Manganese oxide
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Three-dimensional vertical ZnO transistors with suspended top electrodes fabricated by focused ion beam technology
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作者 Chi Sun Linyuan Zhao +4 位作者 Tingting Hao Renrong Liang Haitao Ye Junjie Li Changzhi Gu 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第1期492-496,共5页
Three-dimensional(3D)vertical architecture transistors represent an important technological pursuit,which have distinct advantages in device integration density,operation speed,and power consumption.However,the fabric... Three-dimensional(3D)vertical architecture transistors represent an important technological pursuit,which have distinct advantages in device integration density,operation speed,and power consumption.However,the fabrication processes of such 3D devices are complex,especially in the interconnection of electrodes.In this paper,we present a novel method which combines suspended electrodes and focused ion beam(FIB)technology to greatly simplify the electrodes interconnection in 3D devices.Based on this method,we fabricate 3D vertical core-double shell structure transistors with ZnO channel and Al_(2)O_(3) gate-oxide both grown by atomic layer deposition.Suspended top electrodes of vertical architecture could be directly connected to planar electrodes by FIB deposited Pt nanowires,which avoid cumbersome steps in the traditional 3D structure fabrication technology.Both single pillar and arrays devices show well behaved transfer characteristics with an Ion/Ioff current ratio greater than 106 and a low threshold voltage around 0 V.The ON-current of the 2×2 pillars vertical channel transistor was 1.2μA at the gate voltage of 3 V and drain voltage of 2 V,which can be also improved by increasing the number of pillars.Our method for fabricating vertical architecture transistors can be promising for device applications with high integration density and low power consumption. 展开更多
关键词 three-dimensional(3D)vertical ZnO transistor focused ion beam(FIB) suspended electrodes the electrical inter-connection in 3D devices
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Electrochemical oxidation of aniline by a novel Ti/TiO_xH_y/Sb-SnO_2 electrode 被引量:8
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作者 李晓良 徐浩 延卫 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2016年第11期1860-1870,共11页
Electrochemical oxidation of aniline in aqueous solution was investigated over a novel Ti/TiOxHy/Sb-SnO2 electrode prepared by the electrodeposition method.Scanning electron microscopy,X-ray diffraction,and electroche... Electrochemical oxidation of aniline in aqueous solution was investigated over a novel Ti/TiOxHy/Sb-SnO2 electrode prepared by the electrodeposition method.Scanning electron microscopy,X-ray diffraction,and electrochemical measurements were used to characterize its morphology,crystal structure,and electrochemical properties.Removal of aniline by the Ti/TiOxHy/Sb-SnO2electrode was investigated by ultraviolet-Visible spectroscopy and chemical oxygen demand(COD)analysis under different conditions,including current densities,initial concentrations of aniline,pH values,concentrations of chloride ions,and types of reactor.It was found that a higher current density,a lower initial concentration of aniline,an acidic solution,the presence of chloride ions(0.2wt%NaCl),and a three-dimensional(3D) reactor promoted the removal efficiency of aniline.Electrochemical degradation of aniline followed pseudo-first-order kinetics.The aniline(200 mL of 100mg·L-(-1)) and COD removal efficiencies reached 100%and 73.5%,respectively,at a current density of 20 mA·cm-(-2),pH of 7.0,and supporting electrolyte of 0.5 wt%Na2SO4 after 2 h electrolysis in a 3D reactor.These results show that aniline can be significantly removed on the Ti/TiOxHy/Sb-SnO2electrode,which provides an efficient way for elimination of aniline from aqueous solution. 展开更多
关键词 ANILINE Ti/TiOxHy/Sb-SnO2 electrode Electrochemical oxidation Chloride ions three-dimensional reactor
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Treatment of Wastewater Containing Polyacrylamide Using Three Dimensional Electrodes 被引量:6
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作者 CHEN Wu YANG Changzhui +1 位作者 MEI Ping YIN Xianqing 《Wuhan University Journal of Natural Sciences》 CAS 2007年第2期353-360,共8页
A method using three-dimensional electrode is applied to treat wastewater in oil fields, which contains polyacrylamide (PAM), for analogue. A best condition for electrolysis (I= 1.0 A, t=90 min, c=0.1%, m=980 g,φ=... A method using three-dimensional electrode is applied to treat wastewater in oil fields, which contains polyacrylamide (PAM), for analogue. A best condition for electrolysis (I= 1.0 A, t=90 min, c=0.1%, m=980 g,φ=5 mm, d=5.0 cm) has been determined, under which the COD removal efficiency reached 96.0%, COD containing in wastewater reduced to 64.3 mg/L from 1 622.9 mg/L, the figure before treatment. Three categories of PAM-containing wastewater in production practice have been treated with the COD removal ratios being 87.5%, 82.4% and 84.7% respectively. Presence of H2O2 and ·OH are detected by means of Ti(IV)-5-Br-PADAP technique and colorimetry respectively. The concentration is positively proportional to the COD removal ratio and increases in accordance with increment of time of electrolysis and current. 展开更多
关键词 ELECTROCHEMISTRY three-dimensional electrode (tde oilfield wastewater treatment polyacrylamide (PAM)
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Electrochemical treatment of COD in biologically pretreated coking wastewater using Ti/RuO2-IrO2 electrodes combined with modified coke 被引量:3
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作者 HE Xu-wen LIU Li-yuan GONG Jing-wen WANG Jian-bing QIN Qiang WANG Hao 《Journal of Coal Science & Engineering(China)》 2011年第4期426-430,共5页
The electrochemical treatment of COD contained in biologically pretreated coking wastewater treated by a three-dimensional electrode system with modified coke as the particle electrode was investigated. And the electr... The electrochemical treatment of COD contained in biologically pretreated coking wastewater treated by a three-dimensional electrode system with modified coke as the particle electrode was investigated. And the electrochemical perromance of the coke modified with various active components was studied. The results show that the coke modified with Fe(NO3)2 has the lowest energy consumption and higher COD removal rate under the same condition, and the modified coke has better surface characteristics for the purpose of this study. In addition, the kinetic constant was also calculated. The study shows that the three-dimensional electrode system with Fe (NO3)z-modified coke can give a satisfactory solution in biologically pretreated coking wastewater. 展开更多
关键词 three-dimensional electrode Ti/RuO2-IrO2 anode Fe (NO3)2-modified coke coking wastewater
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Hybrid architecture design enhances the areal capacity and cycling life of low-overpotential nanoarray oxygen electrode for lithium–oxygen batteries 被引量:1
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作者 Liang Xiao Duo Wang +2 位作者 Ming Li Bohua Deng Jinping Liu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2020年第7期248-255,I0008,共9页
Transition metal oxide(TMO)nanoarrays are promising architecture designs for self-supporting oxygen electrodes to achieve high catalytic activities in lithium-oxygen(Li-O2)batteries.However,the poor conductive nature ... Transition metal oxide(TMO)nanoarrays are promising architecture designs for self-supporting oxygen electrodes to achieve high catalytic activities in lithium-oxygen(Li-O2)batteries.However,the poor conductive nature of TMOs and the confined growth of nanostructures on the limited surfaces of electrode substrates result in the low areal capacities of TMO nanoarray electrodes,which seriously deteriorates the intrinsically high energy densities of Li-O2 batteries.Herein,we propose a hybrid nanoarray architecture design that integrates the high electronic conductivity of carbon nanoflakes(CNFs)and the high catalytic activity of Co3 O4 nanosheets on carbon cloth(CC).Due to the synergistic effect of two differently featured components,the hybrid nanoarrays(Co3 O4-CNF@CC)achieve a high reversible capacity of3.14 mA h cm-2 that cannot be achieved by only single components.Further,CNFs grown on CC induce the three-dimensionally distributed growth of ultrafine Co3 O4 nanosheets to enable the efficient utilization of catalysts.Thus,with the high catalytic efficiency,hybrid Co3 O4-CNF@CC also achieves a more prolonged cycling life than pristine TMO nanoarrays.The present work provides a new strategy for improving the performance of nanoarray oxygen electrodes via the hybrid architecture design that integrates the intrinsic properties of each component and induces the three-dimensional distribution of catalysts. 展开更多
关键词 Hybrid architecture Nanoarray oxygen electrode Synergistic effect three-dimensional current collector Lithium-oxygen batteries
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Transforming nanoscale VO_(2)(B) into a scalable sodium-ion electrode
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作者 Yunkai Luo Swetha Chandrasekaran +3 位作者 Bintao Hu Randy Chen Marcus Worsley Bruce Dunn 《Nano Research》 SCIE EI CSCD 2024年第10期8809-8818,共10页
The intermittent nature of renewable energies requires highly reliable grid-level energy storage approaches.A critical consideration in developing this technology is the areal capacity which determines battery perform... The intermittent nature of renewable energies requires highly reliable grid-level energy storage approaches.A critical consideration in developing this technology is the areal capacity which determines battery performance and influences the cost of battery technology.Of related importance is finding new ways of developing scalable electrodes.In recent years,threedimensional(3D)printing of conductive scaffolds has emerged as an alternative to overcome the scalability limitations of commercial tape cast electrodes.The research carried out in the current study demonstrates a successful scalability pathway for nanoscale VO_(2)(B),a desirable cathode for sodium-ion batteries which has a nano-flower morphology with a crystallite size<20 nm.By electrodepositing VO_(2)(B)onto a graphene aerogel scaffold,we were able to achieve mass loading of over 100 mg·cm^(-2) and still possess an areal capacity of 10 mAh·cm^(-2) at a current density of 5 mA·cm^(-2).Moreover,after 1000 cycles,these electrodes retained 75% to 80% of their initial capacity.Even at high loading levels,the electrodeposited VO_(2)(B)exhibits pseudocapacitive material signatures such as a box-like voltammetry response,linear galvanostatic response,and no phase change upon lithiation.The scalability of the VO_(2)(B)electrode is demonstrated in a series of experiments which show the areal capacity to scale upon increase in both mass loading and electrode thickness,with only small changes in specific capacity.This study establishes that nanoscale materials can be scaled up to achieve thick electrodes without compromising their electrochemical properties. 展开更多
关键词 nano VO_(2)(B) sodium-ion battery scalable electrodes three-dimensional(3D)printed scaffold additive manufacturing
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Three-dimensional interconnected Ni(Fe)OxHy nanosheets on stainless steel mesh as a robust integrated oxygen evolution electrode 被引量:8
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作者 Qi Zhang Haixia Zhong +3 位作者 Fanlu Meng Di Bao Xinbo Zhang Xiaolin wei 《Nano Research》 SCIE EI CAS CSCD 2018年第3期1294-1300,共7页
The development of an electrocatalyst based on abundant elements for the oxygen evolution reaction (OER) is important for water splitting associated with renewable energy sources. In this study, we develop an interc... The development of an electrocatalyst based on abundant elements for the oxygen evolution reaction (OER) is important for water splitting associated with renewable energy sources. In this study, we develop an interconnected Ni(Fe)OxHy nanosheet array on a stainless steel mesh (SSNNi) as an integrated OER electrode, without using any polymer binder. Benefiting from the well- defined three-dimensional (3D) architecture with highly exposed surface area, intimate contact between the active species and conductive substrate improved electron and mass transport capacity, facilitated electrolyte penetration, and improved mechanical stability. The SSNNi electrode also has excellent OER performance, including low overpotential, a small Tafel slope, and long-term durability in the alkaline electrolyte, making it one of the most promising OER electrodes developed. 展开更多
关键词 oxygen evolution reaction three-dimensional (3D)architecture stainless steel mesh (SSNNi) integrated oxygenevolution electrode
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Preparation and characterization of three-dimensional micro-electrode for micro-supercapacitor based on inductively coupled plasma reactive etching technology 被引量:1
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作者 WEN ChunMing WEN ZhiYu +1 位作者 YOU Zheng WANG XiaoFeng 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第7期2013-2018,共6页
The capacity of supercapacitor charge storage depends on the size of the electrode surface area and the active material on the electrodes.To enhance the charge storage capacity with a reduced volume,silicon is used as... The capacity of supercapacitor charge storage depends on the size of the electrode surface area and the active material on the electrodes.To enhance the charge storage capacity with a reduced volume,silicon is used as the electrode material,and three-dimensional electrode structure is prepared to increase the electrode surface area on the footprint area by inductively coupled plasma reactive etching(ICP) techniques.The anodic constant current deposition method is employed to deposit manganese oxide on the electrode surface as the electroactive material.For comparison,samples without slot are prepared with a two-dimensional electrode.Scanning Electron Microscopy(SEM) and Energy Dispersive Spectroscopy(EDS) are used to characterize the surface morphology of the electrode structure and the deposited electroactive material.Electrochemical properties of the electrode are characterized by the cyclic voltammetry(CV) and the constant current charge-discharge method.Experimental results show that our approach can effectively increase the electrode surface area with more electroactive substances,and hence can increase storage capacity of the micro-supercapacitor. 展开更多
关键词 Micro Electro Mechanical System(MEMS) micro-supercapacitors three-dimensional electrode inductively coupled plasma reactive etching manganese oxide silicon
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High-performance organic electrochemical transistors gated with 3D-printed graphene oxide electrodes
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作者 Xingyu Jiang Zhiqiang Liang +8 位作者 Miao Wu Jie Lu Cheng Shi Qi Wang Zi Wang Zhen Jin Lin Jiang Lizhen Huang Lifeng Chi 《Nano Research》 SCIE EI CSCD 2023年第11期12689-12696,共8页
Organic electrochemical transistors(OECTs)have garnered significant interest due to their ability to facilitate both ionic and electronic transport.A large proportion of research efforts thus far have focused on inves... Organic electrochemical transistors(OECTs)have garnered significant interest due to their ability to facilitate both ionic and electronic transport.A large proportion of research efforts thus far have focused on investigating high-performance materials that can serve as mixed ion doping and charge transport layers.However,relatively less attention has been given to the gateelectrode materials,which play a critical role in controlling operational voltage,redox processes,and stability,especially in the context of semiconductor-based OECTs working in accumulation mode.Moreover,the demand for planarity and flexibility in modern bioelectronic devices presents significant challenges for the commonly used Ag/AgCl electrodes in OECTs.Herein,we report the construction of high-performance accumulation-mode OECTs by utilizing a gate electrode made of three-dimensional(3D)-printed graphene oxide.The 3D-printed graphene oxide electrode incorporating one-dimensional(1D)carbon nanotubes,is directly printed using an aqueous-based ink and showcases exceptional mechanical flexibility and porosity properties,enabling high-throughput preparation for both top gates and integrated planar architecture,as well as fast ion/charge transport.OECTs with high performance comparable to that of Ag/AgCl-gated OECTs are thus achieved and present promising feasibility for electrocardiograph(ECG)signal recording.This provides a promising choice for the application of flexible bioelectronics in medical care and neurological recording. 展开更多
关键词 organic electrochemical transistors three-dimensional(3D)-printed graphene top electrodes ELECTROCARDIOGRAM
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A Three-Dimensional Silicon-Diacetylene Porous Organic Radical Polymer
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作者 Chengcheng Dong Juan Chu +6 位作者 Linzhu Cao Fengchao Cui Shuang Liang Xintong Zhang Xin Tao Heng-guo Wang Guangshan Zhu 《CCS Chemistry》 CAS CSCD 2023年第3期607-615,共9页
Radical-containing porous organic polymers(POPs)have drawn great interest in various applications.However,the synthesis of radical POPs remains challenging due to the unstable nature of organic radicals.Here,a persist... Radical-containing porous organic polymers(POPs)have drawn great interest in various applications.However,the synthesis of radical POPs remains challenging due to the unstable nature of organic radicals.Here,a persistent and stable three-dimensional silicon-diacetylene porous organic radical polymer was synthesized via a classic Eglinton homocoupling reaction of tetraethynylsilane.The presence of carbon radicals in this material was confirmed by electron paramagnetic resonance,and its paramagnetic behavior was analyzed by a superconducting quantum interference device.This unique material has a low-lying lowest unoccupied molecular orbital(LUMO)energy level(−5.47 eV)and a small energy gap(ca.1.46 eV),which shows long-term cycling stability and excellent rate capability as an anode material for lithium-ion batteries,demonstrating potential application in energy fields. 展开更多
关键词 three-dimensional porous organic polymers radical polymer conjugated diacetylene electrode materials
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Regeneration of activated carbon adsorbed EDTA by electrochemical method 被引量:7
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作者 尤翔宇 柴立元 +3 位作者 王云燕 苏艳蓉 赵娜 舒余德 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第3期855-860,共6页
Activated carbon after saturated adsorption of EDTA was used as particle electrode in a three-dimensional electrode reactor to treat EDTA-containing wastewater.Electrochemical method was used to regenerate activated c... Activated carbon after saturated adsorption of EDTA was used as particle electrode in a three-dimensional electrode reactor to treat EDTA-containing wastewater.Electrochemical method was used to regenerate activated carbon after many times of electrolysis.Based on the analysis of infrared spectra of activated carbon after adsorption and repeated electrolysis,EDTA was degraded into glycine,and then non-catalytic activated associated complex was formed with N—H bond on the activated carbon.The catalytic ability of the activated carbon vanished and the EDTA degradation efficiency was dropped.Activated carbon could be effectively regenerated by electrochemical method in the three-dimensional reactor.Effects of electric current,conductivity and pH on activated carbon regeneration were investigated,and the optimum conditions were concluded as follows:100-300 mA of current intensity,1.39 mS/cm of electric conductivity,60 min of electrolysis time and pH 6.0-8.0.Under the optimized conditions,the activity of the activated carbon can be recovered and the residual total organic carbon(TOC) was below 10 mg/L(the initial TOC was 200 mg/L) in the three-dimensional electrode reactor. 展开更多
关键词 activated carbon electrochemical regeneration three-dimensional electrode EDTA
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三维电极电化学法处理桉木CTMP制浆废水 被引量:11
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作者 雷利荣 李友明 +1 位作者 陈元彩 胡志军 《中国造纸》 CAS 北大核心 2006年第4期6-8,共3页
使用三维电极法对桉木CTMP制浆废水进行处理,研究了反应时间、槽电压、pH值等因素对CODCr和色度去除率的影响。实验结果表明,三维电极法能有效降解和去除污染物,CODCr去除率约为60%,色度去除率约为90%,并可有效提高废水的可生化性。三... 使用三维电极法对桉木CTMP制浆废水进行处理,研究了反应时间、槽电压、pH值等因素对CODCr和色度去除率的影响。实验结果表明,三维电极法能有效降解和去除污染物,CODCr去除率约为60%,色度去除率约为90%,并可有效提高废水的可生化性。三维电极法处理效果显著高于二维平板电极法,槽电压同为3V时,CODCr和色度的去除率比二维平板电极法分别高40和80个百分点。 展开更多
关键词 CTMP制浆废水 三维电极 电催化 脱色
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三维电极电化学方法处理含锌废水的试验研究 被引量:15
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作者 陈武 梅平 吴伍涛 《长江大学学报(自科版)(上旬)》 CAS 2006年第3期35-37,共3页
水体锌污染危害严重。对三维电极处理 Zn^(2+)抖浓度为95.0mg/L 模拟废水进行了试验研究,并通过正交试验得到了三维电极处理模拟含锌废水的最佳运行条件。结果表明,电解时间、主电极间距、粒子电极活性碳与处理水量的比例及电解电流等... 水体锌污染危害严重。对三维电极处理 Zn^(2+)抖浓度为95.0mg/L 模拟废水进行了试验研究,并通过正交试验得到了三维电极处理模拟含锌废水的最佳运行条件。结果表明,电解时间、主电极间距、粒子电极活性碳与处理水量的比例及电解电流等对三维电极处理废水的效率有显著影响,在最佳条件下,三维电极对模拟废水 Zn^(2+)去除率达到95.7%,可使废水中 Zn^(2+)浓度降低到4.1mg/L,满足国家污水综合排放标准 GB8978-88Ⅱ级要求。 展开更多
关键词 含锌废水 废水处理 三维电极 电化学方法
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三维电极方法处理L-亮氨酸废水的研究 被引量:2
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作者 陈武 杨昌柱 +1 位作者 梅平 李良红 《水处理技术》 CAS CSCD 北大核心 2007年第5期28-31,57,共5页
以模拟L-亮氨酸的废水为处理对象,研究影响三维电极去除废水COD的因素及三维电极的最佳操作条件,结果表明,主电极间距、粒子电极填充量、电解时间、电解电流及废水浓度等因素都对三维电极去除COD效率有显著影响,三维电极对模拟L-亮氨酸... 以模拟L-亮氨酸的废水为处理对象,研究影响三维电极去除废水COD的因素及三维电极的最佳操作条件,结果表明,主电极间距、粒子电极填充量、电解时间、电解电流及废水浓度等因素都对三维电极去除COD效率有显著影响,三维电极对模拟L-亮氨酸的废水COD去除率可达到87.9%~90%。说明三维电极处理L-亮氨酸的废水有一定的可行性。 展开更多
关键词 模拟L-亮氨酸的废水 三维电极 废水处理
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三维电极体系中苯酚降解效率的影响因素研究 被引量:2
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作者 王立章 乔启成 +1 位作者 傅剑锋 王哲晓 《生态环境》 CSCD 北大核心 2007年第3期850-854,共5页
三维电极法用于处理含酚废水的影响因素研究报道较多,但并未充分在理论上阐述其影响方式及机理。采用自制的实验室小试电化学反应器对含酚自配废水进行了处理。试验结果表明:体系中苯酚降解遵循一级反应模式;通过电流效率的核算确定60mi... 三维电极法用于处理含酚废水的影响因素研究报道较多,但并未充分在理论上阐述其影响方式及机理。采用自制的实验室小试电化学反应器对含酚自配废水进行了处理。试验结果表明:体系中苯酚降解遵循一级反应模式;通过电流效率的核算确定60min作为最佳反应时间,得到的苯酚去除率为64.3%,吨水处理能耗为14.29kW·h·t-1,实际电流效率与理论电流效率相等为0.68。对体系进水控制不同的苯酚起始质量浓度,当反应时间不变时,实际试验结果与法拉第定律一致,即电流密度与去除的污染物的量以及COD去除率与电量和进水质量浓度的比值均呈线性关系;体系中羟基自由基的产生量能够采用式[?OH]=0.1218×EC0进行计算。采用最佳反应时间t=60min、电流密度I=20A,在苯酚质量浓度为500mg·L-1时改变极板间距进行的试验结果表明电压随极板间距的增大而降低,最佳极板间距为0.21m时可获得最大去除率为78.5%,体系的启动电压为0.25V。 展开更多
关键词 三维电极 羟基自由基 反应时间 起始质量浓度 启动电压
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