期刊文献+
共找到5篇文章
< 1 >
每页显示 20 50 100
Synergism of solar-driven interfacial evaporation and photo-Fenton Cr(Ⅵ) reduction by sustainable Bi-MOF-based evaporator from waste polyester
1
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
下载PDF
Efficient and selective upcycling of waste polylactic acid into acetate using nickel selenide
2
作者 Bing Lan Yinfang Chen +4 位作者 Nantian Xiao Na Liu Chao Juan Chuan Xia Fan Zhang 《Journal of Energy Chemistry》 SCIE EI CAS 2024年第10期575-584,I0012,共11页
The conversion of waste polylactic acid(PLA)plastics into high-value-added chemicals through electrochemical methods is a promising and sustainable approach.However,developing efficient and highly selective catalysts ... The conversion of waste polylactic acid(PLA)plastics into high-value-added chemicals through electrochemical methods is a promising and sustainable approach.However,developing efficient and highly selective catalysts for lactic acid oxidation reaction(LAOR)and understanding the reaction process are challenging.Here,we report the electrooxidation of waste PLA to acetate at a high current density of 100 mA cm-2 with high Faraday efficiency(~95%)and excellent stability(>100 h)over a nickel selenide nanosheet catalyst.In addition,a total Faraday efficiency of up to 190%was achieved for carboxylic acids,including acetic acid and formic acid,by coupling with the cathodic CO_(2) reduction reaction.In situ experimental results and theoretical simulations revealed that the catalytic activity center of LAOR was dynamically formed NiOOH species,and the surface-adsorbed SeO_(x) species accelerated the formation of Ni~(3+)species,thus promoting catalytic activity.The mechanism of lactic acid electrooxidation was further elucidated.Lactic acid was dehydrogenated to produce pyruvate first and then formed CH_3CO due to preferential C-C bond cleavage,resulting in the presence of acetate.This work demonstrated a sustainable method for recycling waste PLA and CO_(2) into high-value-added products. 展开更多
关键词 waste plastic upcycling Poly(lactic acid) Lactic acid electro-oxidation Acetic acid
下载PDF
Dual‑Doped Nickel Sulfide for Electro‑Upgrading Polyethylene Terephthalate into Valuable Chemicals and Hydrogen Fuel 被引量:1
3
作者 Zhijie Chen Renji Zheng +4 位作者 Teng Bao Tianyi Ma Wei Wei Yansong Shen Bing‑Jie Ni 《Nano-Micro Letters》 SCIE EI CAS CSCD 2023年第11期385-399,共15页
Electro-upcycling of plastic waste into value-added chemicals/fuels is an attractive and sustainable way for plastic waste management.Recently,electrocatalytically converting polyethylene terephthalate(PET)into format... Electro-upcycling of plastic waste into value-added chemicals/fuels is an attractive and sustainable way for plastic waste management.Recently,electrocatalytically converting polyethylene terephthalate(PET)into formate and hydrogen has aroused great interest,while developing low-cost catalysts with high efficiency and selectivity for the central ethylene glycol(PET monomer)oxidation reaction(EGOR)remains a challenge.Herein,a high-performance nickel sulfide catalyst for plastic waste electro-upcycling is designed by a cobalt and chloride co-doping strategy.Benefiting from the interconnected ultrathin nanosheet architecture,dual dopants induced upshifting d band centre and facilitated in situ structural reconstruction,the Co and Cl co-doped Ni_(3)S_(2)(Co,Cl-NiS)outperforms the singledoped and undoped analogues for EGOR.The self-evolved sulfide@oxyhydroxide heterostructure catalyzes EG-to-formate conversion with high Faradic efficiency(>92%)and selectivity(>91%)at high current densities(>400 mA cm^(−2)).Besides producing formate,the bifunctional Co,Cl-NiS-assisted PET hydrolysate electrolyzer can achieve a high hydrogen production rate of 50.26 mmol h^(−1)in 2 M KOH,at 1.7 V.This study not only demonstrates a dual-doping strategy to engineer cost-effective bifunctional catalysts for electrochemical conversion processes,but also provides a green and sustainable way for plastic waste upcycling and simultaneous energy-saving hydrogen production. 展开更多
关键词 Hydrogen energy Electro-upcycling Structural reconstruction Organic waste upcycling d Band centre
下载PDF
Enhanced Solar Water Desalination by CuCo_(2)S_(4)-decorated Carbon Foam Derived from Waste Plastics
4
作者 Muzammil HUSSAIN Tofik Ahmed SHIFA +5 位作者 Pratik V.SHINDE Pankaj KUMAR Stefano CENTENARO Silvia GROSS Elisa MORETTI Alberto VOMIERO 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2024年第3期548-555,共8页
Interfacial solar desalination is an emerging technology for freshwater production,but the finding of novel solar evaporators is still challenging.In the present research,graphitic carbon foam(CF)was synthesized from ... Interfacial solar desalination is an emerging technology for freshwater production,but the finding of novel solar evaporators is still challenging.In the present research,graphitic carbon foam(CF)was synthesized from the upcycling of waste plastic polyethylene terephthalate(PET)waste bottles functionalized with carrollite CuCo_(2)S_(4) as a photothermal layer.Analytical characterization[X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),and scanning electron microscopy-energy dispersive spectroscopy(SEM-EDS)]confirms the functionalization of carrollite CuCo_(2)S_(4) on graphitic carbon foam.The UV-Vis spectroscopy analysis showed an enhanced optical absorption in the UV-Vis-near IR region(>96%)for functionalized CuCo_(2)S_(4)-CF foam compared to carbon foam(67%).The interfacial solar desalination experiment presented a significantly enhanced evaporation rate of 2.4 kg·m^(−2)·h^(−1) for CuCo_(2)S_(4)-CF compared to that of CF(1.60 kg·m^(−2)·h^(−1))and that of CuCo_(2)S_(4)(1.60 kg·m^(−2)·h^(−1)).The obtained results proved that the newly synthesized CuCo_(2)S_(4)-CF from the upcycled plastic into new material for the photothermal desalination process can enhance the practice of a circular economy to produce fresh water. 展开更多
关键词 Photothermal desalination COBALT Copper CHALCOGENIDE waste upcycling Circular economy
原文传递
Co-electrolysis of ethylene glycol and carbon dioxide for formate synthesis
5
作者 Dongfeng Du Fusong Kang +2 位作者 Shiru Yang Bin Shao Jingshan Luo 《Science China Chemistry》 SCIE EI CAS CSCD 2024年第5期1539-1544,共6页
Co-electrolysis of waste plastics and carbon dioxide(CO_(2)) into value-added chemicals or fuels is a promising pathway for a sustainable society, but efficient and selective conversion remains a challenge. Herein, a ... Co-electrolysis of waste plastics and carbon dioxide(CO_(2)) into value-added chemicals or fuels is a promising pathway for a sustainable society, but efficient and selective conversion remains a challenge. Herein, a gold-mediated nickel hydroxide(Au/Ni(OH)_(2)) is developed to oxidize waste plastic-derived ethylene glycol(EG) into formate. In-situ electrochemical experiments and theoretical results reveal that the introduction of Au favors the redox properties and EG adsorption behavior of Ni(OH)_(2). The Au/Ni(OH)_(2) catalyst shows an excellent formate selectivity of >90% at high current densities of above 100 m A cm^(-2). When coupled with sputtered bismuth(Bi) cathode for CO_(2) reduction, a high formate Faradic efficiency(FE) of 188.2% at 200 m A cm^(-2)and a good formate productivity of 7.33 mmol m^(-2)s^(-1)at 10 A are obtained in a flow cell and a zero-gap membrane electrode assembly(MEA) cell, respectively. This work demonstrates a promising strategy to convert waste plastics and CO_(2) into valuable products. 展开更多
关键词 waste plastic upcycling ethylene glycol oxidation carbon dioxide reduction ELECTROCATALYSIS formate synthesis
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部