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Synergism of solar-driven interfacial evaporation and photo-Fenton Cr(Ⅵ) reduction by sustainable Bi-MOF-based evaporator from waste polyester
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作者 Zifen Fan Jie Liu +7 位作者 Huajian Liu Lijie Liu Yan She Xueying Wen Huiyue Wang Guixin Hu Ran Niu Jiang Gong 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第7期527-540,共14页
The integration of interfacial solar steam generation and photocatalytic degradation technology has pro-vided a promising platform to simultaneously produce freshwater and degrade pollutants.However,con-structing low-... The integration of interfacial solar steam generation and photocatalytic degradation technology has pro-vided a promising platform to simultaneously produce freshwater and degrade pollutants.However,con-structing low-cost,multi-functional evaporators for treating Cr(Ⅵ)-polluted water remains challenging,and the synergistic mechanism on Cr(Ⅵ)reduction is fuzzy.Herein,we propose the combined strategy of ball milling and solution mixing for the sustainable production of Bi-MOF microrod from waste poly(ethylene terephthalate),and construct Bi-MOF-based solar evaporators for simultaneous photo-Fenton Cr(Ⅵ)reduction and freshwater production.Firstly,the evaporator comprised of Bi-MOF microrod and graphene nanosheet possesses high light absorption,efficient photothermal conversion,and good hydro-philic property.Attributing to the advantages,the hybrid evaporator exhibits the evaporation rate of 2.16 kg m^(-2) h^(-1) and evaporation efficiency of 87.5%under 1 kW m^(-2) of irradiation.When integrating with photo-Fenton reaction,the Cr(Ⅵ)reduction efficiency is 91.3%,along with the reaction kinetics of 0.0548 min^(-1),surpassing many advanced catalysts.In the outdoor freshwater production and Cr(Ⅵ)reduction,the daily accumulative water yield is 5.17 kg m^(-2) h^(-1),and the Cr(Ⅵ)reduction efficiency is 99.9%.Furthermore,we prove that the localization effect derived from the interfacial solar-driven evap-oration enhances H_(2)O_(2) activation for the photo-Fenton reduction of Cr(Ⅵ).Based on the result of density functional theory,Bi-MOF microrod provides rich active centers for H_(2)O_(2) activation to produce active sites such as e-or-O_(2).This study not only proposes a new strategy to construct multi-functional solar evaporators for freshwater production and catalytic reduction of pollutants,but also advances the chem-ical upcycling of waste polyesters. 展开更多
关键词 Interfacial solar steam generation Cr(VI)reduction photo-fenton reaction Metal-organic framework Waste plastic upcycling
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Experimental and theoretical investigations of the photoelectrochemical and photo-Fenton properties of Co-doped FeOCl
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作者 马金环 魏智强 +2 位作者 丁梅杰 赵继威 路承功 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第9期427-435,共9页
For the first time,two-dimensional FeOCl(Fe_(1-x)Co_(x)OCl)doped with Co was successfully applied to the photocatalytic and photo-Fenton degradation of Rhodamine B(RhB).The photocatalytic and photo-Fenton experiments ... For the first time,two-dimensional FeOCl(Fe_(1-x)Co_(x)OCl)doped with Co was successfully applied to the photocatalytic and photo-Fenton degradation of Rhodamine B(RhB).The photocatalytic and photo-Fenton experiments showed that the degradation rates of RhB by Fe0.94Co0.06OCl are 82.6%and 98.2%within 50 min under neutral solution,room temperature and visible light.The inclusion of Co resulted in lattice imperfections on the surface of Fe OCl,which was advantageous for the photogenerated electron-hole pair separation efficiency(consistent with the density functional theory calculation).Moreover,the RhB removal rate decreased from 98%to 82%during five successive cycles,showing good structural stability.Finally,based on the radical capture experiment,a potential mechanism for RhB degradation by Fe_(1-x)Co_(x)OCl catalyst was proposed.The idea of a synergistic mechanism for Fe_(1-x)Co_(x)OCl also offers a fresh concept for catalysts used in doping modification. 展开更多
关键词 Co doped FeOCl photo-fenton PHOTOCATALYTIC DFT calculations
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Optimization of Photo-Fenton Catalyst Preparation Based Bamboo Carbon Fiber by Response Surface Methodology
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作者 Yizhang Wang Zhaoyang Yu +5 位作者 Jinbo Hu Shanshan Chang Yuan Liu Ting Li Gonggang Liu Xiaodong(Alice)Wang 《Journal of Renewable Materials》 SCIE EI 2023年第1期147-165,共19页
In this paper,the residue from bamboo factory has been used to design photo-Fenton catalyst,which has the advantages of low cost and magnetic recycling.The photo-Fenton catalytic performance of the biocarbon-based cat... In this paper,the residue from bamboo factory has been used to design photo-Fenton catalyst,which has the advantages of low cost and magnetic recycling.The photo-Fenton catalytic performance of the biocarbon-based catalyst was excellent and its optimal preparation process was also explored by response surface methodology.First,bamboo-carbon fiber was selected as the photo-Fenton catalyst carrier.Subsequently,the surface of the car-bon fiber was modified,with which dopamine,nano-Fe_(3)O_(4) and nano-TiO_(2) were successively loaded by hydro-thermal method.After the single factor tests,four factors including dopamine concentration,ferric chloride mass,P25 titanium dioxide mass and liquid-solid ratio were selected as the characteristic values.The degradation efficiency of photo-Fenton catalyst to methylene blue(MB)solution was treated as the response value.After the analysis of the response surface optimization,it was shown that the significance sequence of the selected 4 factors in terms of the MB degradation efficiency was arranged as follows:dopamine concentration>liquid-solid ratio>P25 titanium dioxide quality>ferric chloride quality.The optimal process parameters of fiber-carbon catalyst were affirmed as follows:the 1.7 mg/mL concentration of dopamine,the 1.2 g mass of ferric chloride,the 0.2 g mass of P25 titanium dioxide and the liquid-solid ratio of 170 mL/g.The experiment-measured average MB degra-dation efficiency performed by the optimized catalyst was 99.3%,which was nearly similar to the model-predicted value of 98.9%.It showed that the prediction model and response surface model were accurate and reliable.The results from response surface optimization could provide a good reference to design bamboo-based Fenton-like catalyst with excellent catalytic performance. 展开更多
关键词 photo-fenton catalysis bamboo fiber carbon fiber response surface optimization methylene blue
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Ultralow-Energy-Barrier H_(2)O_(2)Dissociation on Coordinatively Unsaturated Metal Centers in Binary Ce-Fe Prussian Blue Analogue for Efficient and Stable Photo-Fenton Catalysis
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作者 Wenting Zheng Hui Guo +4 位作者 Changqing Zhu Cailiang Yue Wenlei Zhu Fuqiang Liu Zhaoxu Chen 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2023年第6期427-435,共9页
The low intrinsic activity of Fenton catalytic site and high demand for light-energy input inhibit the organic-pollution control efficiency of photo-Fenton process.Here,through structural design with density functiona... The low intrinsic activity of Fenton catalytic site and high demand for light-energy input inhibit the organic-pollution control efficiency of photo-Fenton process.Here,through structural design with density functional theory(DFT)calculations,Ce is predicted to enable the construction of coordinatively unsaturated metal centers(CUCs)in Prussian blue analogue(PBA),which can strongly adsorb H_(2)O_(2)and donate sufficient electrons for directly splitting the O-O bond to produceOH.Using a substitution-co-assembly strategy,binary Ce-Fe PBA is then prepared,which rapidly degrades sulfamethoxazole with the pseudo-first-order kinetic rate constant exceeding reported values by 1-2 orders of magnitude.Meanwhile,the photogenerated electrons reduce Fe(Ⅲ)and Ce(Ⅳ)to promote the metal valence cycle in CUCs and make sulfamethoxazole degradation efficiency only lose 6.04%in 5 runs.Overall,by introducing rare earth metals into transition metal-organic frameworks,this work guides the whole process for highly active CUCs from design and construction to mechanism exploration with DFT calculations,enabling ultrafast and stable photo-Fenton catalysis. 展开更多
关键词 Ce substitution coordinatively unsaturated metal centers photo-fenton Prussian blue analogue
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自然光条件下光自芬顿/PMS协同体系处理新污染物的实验设计 被引量:1
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作者 刘芳 刘嘉梁 +3 位作者 安蓓雅 刘柃妤 李石 王永强 《实验技术与管理》 CAS 北大核心 2024年第1期26-36,共11页
为强化学生对新污染物处理理论和实验技能的掌握,设计了光自芬顿/过氧单硫酸盐(PMS)协同体系在自然光条件下对新污染物的强化降解实验。利用水热法和浸渍法制备改性氮化碳空心球MoS_(2)/TCN_(Cl-S)(P),以四环素(TC)作为新污染物代表,构... 为强化学生对新污染物处理理论和实验技能的掌握,设计了光自芬顿/过氧单硫酸盐(PMS)协同体系在自然光条件下对新污染物的强化降解实验。利用水热法和浸渍法制备改性氮化碳空心球MoS_(2)/TCN_(Cl-S)(P),以四环素(TC)作为新污染物代表,构建了光自芬顿/PMS协同体系,基于其耦合效应,提高在自然光条件下污染物的降解效率。结果表明,光自芬顿/PMS体系对TC在120min内的降解率可以达到80%,较不引入PMS的光自芬顿体系提高了30%。其原因在于光自芬顿反应中产生的H_(2)O_(2)与PMS发生协同作用,产生了更多的·O_(2)^(-)、SO_(4)^(-)·和^(1)O_(2)等活性自由基,从而提高了TC的降解效率。该实验设计体系有助于促进学生对高级氧化技术的掌握,为学生科研创新能力培养体系的构建提供参考。 展开更多
关键词 自然光 新污染物 改性氮化碳空心球 光自芬顿/PMS协同系统
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Fenton及Photo-Fenton反应研究进展 被引量:100
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作者 张德莉 黄应平 +3 位作者 罗光富 刘德富 马万红 赵进才 《环境化学》 CAS CSCD 北大核心 2006年第2期121-127,共7页
Fenton反应自发现以来一直广泛用于不同的氧化反应.近年来,Fenton及Photo-Fenton作为一种新的有效的高级氧化技术应用于环境污染的处理领域.本文简要介绍了Fenton及Photo-Fenton反应的机理和应用在催化氧化领域中的研究进展.
关键词 FENTON photo-fenton 机理 应用
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CuBi_(2)O_(4)/Bi_(2)WO_(6)Z型异质结用于光电类芬顿体系下高效降解环丙沙星 被引量:2
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作者 王秋霞 韩玉贵 +3 位作者 赵鹏 王爽 刘亚茹 李轶 《高等学校化学学报》 SCIE EI CSCD 北大核心 2024年第1期107-118,共12页
针对目前水环境中抗生素污染严重的问题,使用简单的溶剂热法制备了CuBi_(2)O_(4)/Bi_(2)WO_(6)(CBWO)Z型异质结催化剂.扫描电子显微镜分析结果表明,其结构为棒状和纳米片状.能量色散元素图谱显示,Cu,W,Bi和O元素均匀分散在CBWO-60中;使... 针对目前水环境中抗生素污染严重的问题,使用简单的溶剂热法制备了CuBi_(2)O_(4)/Bi_(2)WO_(6)(CBWO)Z型异质结催化剂.扫描电子显微镜分析结果表明,其结构为棒状和纳米片状.能量色散元素图谱显示,Cu,W,Bi和O元素均匀分散在CBWO-60中;使用X射线衍射和傅里叶变换红外光谱探究了催化剂的晶体结构和化学键、官能团组成;BET表征结果证明,CBWO-60具有较高的比表面积.X射线光电子能谱(XPS)证明Cu^(+)和Cu^(2+)共存,促进了芬顿(Fenton)反应的循环进行,XPS结合能的位移证明了异质结中CuBi_(2)O_(4)和Bi_(2)WO_(6)之间具有强的电子相互作用,而不是物理混合;使用紫外⁃可见漫反射光谱和价带-X射线光电子能谱分析了异质结的能带结构;利用光致发射光谱、电化学阻抗谱和瞬态光电流响应谱探究了催化剂的电荷转移情况.在该系列催化剂中,CBWO-60在光电类芬顿(PEF-like)体系中对环丙沙星(CIP)的降解效率最高,90 min时,降解效率为98.0%.同时,溶液初始pH在2~6范围时,体系始终能够维持有效的CIP去除效率,与传统芬顿体系相比,该体系的pH应用范围得到了有效拓宽.在PEF-like体系中,CBWO-60对喹诺酮类、磺胺类和四环素类抗生素均表现出较强的降解能力,充分证明了CBWO-60的普适性.CBWO-60在连续5次循环实验后,对CIP仍保持87.8%的降解率,并且反应后催化剂的晶体结构没有发生改变.根据高效液相色谱⁃质谱的结果,提出了CIP降解的5种可能途径. 展开更多
关键词 光电类芬顿体系 铋酸铜/钨酸铋 Z型异质结 环丙沙星 活性氧物种
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磁性Fe_3O_4/石墨烯Photo-Fenton催化剂的制备及其催化活性 被引量:19
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作者 何光裕 张艳 +2 位作者 钱茂公 陈海群 汪信 《无机化学学报》 SCIE CAS CSCD 北大核心 2012年第11期2306-2312,共7页
采用共沉淀法制备磁性Fe3O4/GE(石墨烯)催化剂,实现Fe3O4纳米颗粒生长和氧化石墨烯还原同步进行,采用FTIR、XRD、TEM及低温氮吸附-脱附等对Fe3O4/GE纳米催化剂的物相、颗粒粒径及比表面积进行了表征。在H2O2存在条件下,以亚甲基蓝为目... 采用共沉淀法制备磁性Fe3O4/GE(石墨烯)催化剂,实现Fe3O4纳米颗粒生长和氧化石墨烯还原同步进行,采用FTIR、XRD、TEM及低温氮吸附-脱附等对Fe3O4/GE纳米催化剂的物相、颗粒粒径及比表面积进行了表征。在H2O2存在条件下,以亚甲基蓝为目标降解物,考察了在模拟太阳光下Fe3O4/GE的催化活性,当氧化石墨烯与Fe3O4的质量比为1∶10时,经过2 h催化反应,在pH=6条件下,对亚甲基蓝的降解率达到98.7%,经过10次循环使用后对染料溶液的降解率仍保持在95.7%以上,明显优于纯的Fe3O4。 展开更多
关键词 纳米Fe3O4/GE 磁分离 photo-fenton反应
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Photo-Fenton反应研究进展 被引量:89
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作者 谢银德 陈锋 +1 位作者 何建军 赵进才 《感光科学与光化学》 CSCD 2000年第4期357-365,共9页
Photo Fenton氧化法是一种近几年来引起极大关注的新的有效的高级氧化技术 ,并逐渐应用于环境污染物的处理领域 .本文简要介绍了这方面的研究进展情况 ,包括其机理研究和应用研究以及一些新的改进的Photo Fenton氧化方法 .
关键词 photo-fenton 有机污染物处理 氧化反应
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Fenton及Photo-Fenton非均相体系降解有机污染物的研究进展 被引量:23
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作者 赵超 姜利荣 黄应平 《分析科学学报》 CAS CSCD 2007年第3期355-360,共6页
Fenton及photo-Fenton氧化法是一种有效的应用于环境污染物处理领域的高新氧化技术之一,对Fenton试剂的固定化可以减少铁离子的二次污染,提高催化能力和光利用率,及扩展pH等优势。本文综述了近年来Fenton及photo-Fenton非均相体系氧化... Fenton及photo-Fenton氧化法是一种有效的应用于环境污染物处理领域的高新氧化技术之一,对Fenton试剂的固定化可以减少铁离子的二次污染,提高催化能力和光利用率,及扩展pH等优势。本文综述了近年来Fenton及photo-Fenton非均相体系氧化降解有机污染物的研究状况。引用文献57篇。 展开更多
关键词 FENTON photo-fenton 非均相 氧化降解
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Fenton/Photo-Fenton氧化与生物处理组合技术的应用研究进展 被引量:7
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作者 张红岩 王伟财 +1 位作者 吕荣湖 刘晓春 《化工进展》 EI CAS CSCD 北大核心 2008年第1期1-5,共5页
Fenton/Photo-Fenton与生物处理组合技术在处理受污染的水和土壤中具有广阔的应用前景。首先简明归纳了Fenton/Photo-Fenton作为预处理改善污染物可生化性的研究概况,指出通过改变氧化条件找到合适的氧化状态点是问题的关键。然后介绍了... Fenton/Photo-Fenton与生物处理组合技术在处理受污染的水和土壤中具有广阔的应用前景。首先简明归纳了Fenton/Photo-Fenton作为预处理改善污染物可生化性的研究概况,指出通过改变氧化条件找到合适的氧化状态点是问题的关键。然后介绍了Fenton/Photo-Fenton与生物处理组合技术的具体应用研究进展,主要是实验室规模研究,也包括几个中试应用的实例。最后,针对该组合技术的问题提出了今后的研究方向。 展开更多
关键词 FENTON photo-fenton 可生化性 生物处理 组合技术
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敌百虫农药废水Photo-Fenton处理方法研究 被引量:6
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作者 陈心满 徐明芳 +1 位作者 彭延治 葛湘峰 《水资源保护》 CAS 北大核心 2006年第5期53-55,94,共4页
以含敌百虫有机磷农药的溶液为研究对象,采用Photo-Fenton试剂进行氧化降解处理,使其成功转化成为无机磷(PO43-)。实验表明,在pH值=3.0,c(Fe2+)=0.72 mmol/L,c(H2O2)=3 mmol/L的酸性条件下,Photo-Fenton处理方法对敌百虫废水有机磷转化... 以含敌百虫有机磷农药的溶液为研究对象,采用Photo-Fenton试剂进行氧化降解处理,使其成功转化成为无机磷(PO43-)。实验表明,在pH值=3.0,c(Fe2+)=0.72 mmol/L,c(H2O2)=3 mmol/L的酸性条件下,Photo-Fenton处理方法对敌百虫废水有机磷转化成无机磷的转化率可达70%,这可能是因为Fe3+络合物对光的吸收产生的配合基的作用以及产生羟基自由基(OH.)的速率加快。还对photo-Fenton处理有机磷农药的影响因素进行探讨。 展开更多
关键词 photo-fenton 农药 敌百虫 光氧化作用
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Photo-Fenton氧化法处理废水的原理及影响因素 被引量:21
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作者 钟萍 林志芬 +1 位作者 刘正文 孔令仁 《生态科学》 CSCD 2004年第4期362-364,共3页
Photo-Fenton高级氧化技术是处理难降解有毒有机废水的一种有效的方法。本文阐述了该氧化法的原理及其影响因素,photo-Fenton氧化法在反应中会产生大量羟自由基(·OH),它是一种非常活泼及非选择性物种,其氧化电位为2.8V,氧化能力很... Photo-Fenton高级氧化技术是处理难降解有毒有机废水的一种有效的方法。本文阐述了该氧化法的原理及其影响因素,photo-Fenton氧化法在反应中会产生大量羟自由基(·OH),它是一种非常活泼及非选择性物种,其氧化电位为2.8V,氧化能力很强,能够引发水溶液中大部分有机物的氧化还原反应。其优点是操作简便及无二次污染等,反应产物Fe3+可与OH反应形成Fe(OH)3沉淀而对环境无害。缺点是反应必须在pH≤3条件下进行,且H2O2消耗量大而导致价格昂贵,处理成本较高等。 展开更多
关键词 photo-fenton氧化法 ·OH:Fenton氧化法
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Photo-Fenton技术处理难降解有机废水的研究进展 被引量:13
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作者 尤特 唐运平 《天津工业大学学报》 CAS 北大核心 2010年第4期68-73,共6页
Photo-Fenton氧化法是将紫外或可见光引入到Fenton体系中形成的一种高级氧化技术.介绍了Photo-Fen-ton技术处理难降解有机废水的作用机理,探讨了不同外界影响因素对处理效果的影响,阐述了该技术在水处理中研究和应用的最新进展,并提出了... Photo-Fenton氧化法是将紫外或可见光引入到Fenton体系中形成的一种高级氧化技术.介绍了Photo-Fen-ton技术处理难降解有机废水的作用机理,探讨了不同外界影响因素对处理效果的影响,阐述了该技术在水处理中研究和应用的最新进展,并提出了Photo-Fenton试剂的发展方向和前景. 展开更多
关键词 photo-fenton试剂 难降解有机废水 废水处理
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The surface electron transfer strategy promotes the hole of PDI release and enhances emerging organic pollutant degradation
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作者 Yunchuan Yang Dongyu Wang +2 位作者 Jisheng Geng Jun Liu Jun Wang 《Journal of Semiconductors》 EI CAS CSCD 2024年第10期84-91,共8页
In semiconductor photocatalysts,the easy recombination of photogenerated carriers seriously affects the application of photocatalytic materials in water treatment.To solve the serious problem of electron−hole pair rec... In semiconductor photocatalysts,the easy recombination of photogenerated carriers seriously affects the application of photocatalytic materials in water treatment.To solve the serious problem of electron−hole pair recombination in perylene diimide(PDI)organic semiconductors,we loaded ferric hydroxyl oxide(FeOOH)on PDI materials,successfully prepared novel FeOOH@PDI photocatalytic materials,and constructed a photo-Fenton system.The system was able to achieve highly efficient degradation of BPA under visible light,with a degradation rate of 0.112 min^(−1)that was 20 times higher than the PDI system,and it also showed universal degradation performances for a variety of emerging organic pollutants and anti-interference ability.The mechanism research revealed that the FeOOH has the electron trapping property,which can capture the photogenerated electrons on the surface of PDI,effectively reducing the compounding rate of photogenerated carriers of PDI and accelerating the iron cycling and H2O2 activation on the surface of FeOOH at the same time.This work provides new insights and methods for solving the problem of easy recombination of carriers in semiconductor photocatalysts and degrading emerging organic pollutants. 展开更多
关键词 perylene diimide organic semiconductors emerging pollutants surface electron transfer strategy photo-fenton
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Visible Light-Induced Photocatalysis:Self-Fenton Degradation of p-CIPhOH Over Graphitic Carbon Nitride by a Polyethylenimine Bifunctional Catalyst
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作者 Yuan Bai Shuangjun Li +2 位作者 Bolin Yin Jinpeng Zhao Hexing Li 《Transactions of Tianjin University》 EI CAS 2024年第2期130-139,共10页
Deep degradation of organic pollutants by sunlight-induced coupled photocatalytic and Fenton (photo-Fenton) reactions is of immense importance for water purification. In this work, we report a novel bifunctional catal... Deep degradation of organic pollutants by sunlight-induced coupled photocatalytic and Fenton (photo-Fenton) reactions is of immense importance for water purification. In this work, we report a novel bifunctional catalyst (Fe-PEI-CN) by codoping graphitic carbon nitride (CN) with polyethyleneimine ethoxylated (PEI) and Fe species, which demonstrated high activity during p-chlorophenol (p-ClPhOH) degradation via H_(2)O_(2) from the photocatalytic process. The relationship between the catalytic efficiency and the structure was explored using diff erent characterization methods. The Fe modification of CN was achieved through Fe-N coordination, which ensured high dispersion of Fe species and strong stability against leaching during liquid- phase reactions. The Fe modification initiated the Fenton reaction by activating H_(2)O_(2) into ·OH radicals for deep degradation of p-ClPhOH. In addition, it eff ectively promoted light absorption and photoelectron-hole (e-h ^(+) ) separation, corresponding to improved photocatalytic activity. On the other hand, PEI could significantly improve the ability of CN to generate H_(2)O_(2) through visible light photocatalysis. The maximum H_(2)O_(2) yield reached up to 102.6 μmol/L, which was 22 times higher than that of primitive CN. The cooperation of photocatalysis and the self-Fenton reaction has led to high-activity mineralizing organic pollutants with strong durability, indicating good potential for practical application in wastewater treatment. 展开更多
关键词 Fe-PEI-CN bifunctional catalyst photo-fenton p-chlorophenol(p-ClPhOH)degradation Synergetic effect
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Optimization of a digested sludge-derived mesoporous material as an efficient and stable heterogeneous catalyst for the photo-Fenton reaction 被引量:3
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作者 院士杰 廖年华 +1 位作者 董滨 戴晓虎 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2016年第5期735-742,共8页
The anaerobic digestion of sludge has recently received increased interest because of the potential to transform organic matter into methane‐rich biogas. However, digested sludge, the residue produced in that process... The anaerobic digestion of sludge has recently received increased interest because of the potential to transform organic matter into methane‐rich biogas. However, digested sludge, the residue produced in that process, still contains high levels of heavy metals and other harmful substances that might make traditional disposal difficult. We have devised a facile method of converting digested sludge into a mesoporous material that acts as an effective and stable heterogeneous catalyst for the photo‐Fenton reaction. A comparison of the removal of rhodamine B under different conditions showed that FAS‐1‐350, which was synthesized by mixing the digested sludge with a 1 mol/L(NH4)2Fe(SO4)2 solution followed by calcination at 350 °C, exhibited the best catalytic activity owing to its faster reaction rate and lower degree of Fe leaching. The results indicate that Fe^(2+)‐loaded catalysts have significant potential to act as stable and efficient heterogeneous promoters for the photo‐Fenton reaction, with better performance than Fe^3+‐loaded catalysts because the Fe(II)/Fe(III)compounds formed in the calcination process are necessary to sustain the Fenton reaction. This protocol provides an alternative, environmentally friendly method of reusing digested sludge and demonstrates an easily synthesized mesoporous material that effectively degrades azo dyes. 展开更多
关键词 Digested sludge Iron-based compound Mesoporous material Heterogeneous photo-fenton reaction
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Removal of citrate and hypophosphite binary components using Fenton,photo-Fenton and electro-Fenton processes 被引量:9
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作者 Yao-Hui Huang Hsiao-Ting Su Li-Way Lin 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2009年第1期35-40,共6页
Both citrate and hypophosphite in aqueous solution were degraded by advanced oxidation processes (Fe^2+/H2O2, UV/Fe^2+/H2O2, and electrolysis/Fe^2+/H2O2) in this study. Comparison of these techniques in oxidation... Both citrate and hypophosphite in aqueous solution were degraded by advanced oxidation processes (Fe^2+/H2O2, UV/Fe^2+/H2O2, and electrolysis/Fe^2+/H2O2) in this study. Comparison of these techniques in oxidation efficiency was undertaken. It was found that Fenton process could not completely degrade citrate in the presence of hypophosphite since it caused a series inhibition. Therefore, UV light (photo-Fenton) or electron current (electro-Fenton) was applied to improve the degradation efficiency of the Fenton process. Results showed that both photo-Fenton and electro-Fenton processes could overcome the inhibition of hypophosphite, especially the electro-Fenton. 展开更多
关键词 CITRATE HYPOPHOSPHITE WASTEWATER advanced oxidation processes FENTON photo-fenton ELECTRO-FENTON
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Photo-Fenton反应处理各种难降解有机废水的研究进展 被引量:1
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作者 李彩霞 丁光月 樊彩梅 《山西化工》 2008年第6期26-30,共5页
Photo-Fenton反应是一种高级氧化技术,在处理废水中有机污染物方面有着广阔的应用前景,它对含酚、染料、农药及其他各种废水中的有毒有机污染物都有很高的降解率,并能最终生成CO2、水和无机离子,且反应快、操作简便。综述了近年来Photo-... Photo-Fenton反应是一种高级氧化技术,在处理废水中有机污染物方面有着广阔的应用前景,它对含酚、染料、农药及其他各种废水中的有毒有机污染物都有很高的降解率,并能最终生成CO2、水和无机离子,且反应快、操作简便。综述了近年来Photo-Fenton反应在处理有机废水方面的国内外研究现状。 展开更多
关键词 photo-fenton反应 有机废水处理 紫外光
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Ordered mesoporous Fe/TiO_2 with light enhanced photo-Fenton activity 被引量:9
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作者 Zhenmin Xu Ru Zheng +2 位作者 Yao Chen Jian Zhu Zhenfeng Bian 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2019年第5期631-637,共7页
Ordered mesoporous Fe/TiO2 was prepared by an evaporation-induced self-assembly method. The iron ions were in situ embedded in the pore wall of the TiO2 framework. The catalyst has excellent light-assisted Fenton cata... Ordered mesoporous Fe/TiO2 was prepared by an evaporation-induced self-assembly method. The iron ions were in situ embedded in the pore wall of the TiO2 framework. The catalyst has excellent light-assisted Fenton catalytic performance under UV and visible light irradiation. X-ray diffraction and transmission electron microscopy results showed that the TiO2 samples have an ordered two-dimensional hexagonal pore structure and an anatase phase structure with high crystallinity. The ordered pore structure of the TiO2 photocatalyst with a large specific surface area is beneficial to mass transfer and light harvesting. Furthermore, iron ions can be controlled by embedding them into the TiO2 framework to prevent iron ion loss and inactivation. After five cycles, the reaction rate of the ordered mesoporous Fe/TiO2 remained unchanged, indicating that the material has stable performance and broad application prospects for the purification of environmental pollutants. 展开更多
关键词 Ordered mesoporous TiO2 Iron doping photo-fenton PHOTOCATALYSIS
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