A promising way to address environmental problems caused by plastic waste is through its upcycling into renewable energy and resources.With annual production reaching millions of tons,one of the most widely single-use...A promising way to address environmental problems caused by plastic waste is through its upcycling into renewable energy and resources.With annual production reaching millions of tons,one of the most widely single-use daily plastics,polyethylene terephthalate(PET),has recently been investigated in terms of chemical recycling to reduce its environmental impact and generate renewable fuels.This study introduces an innovative electrochemical method for the specific conversion of PET hydrolysate into highvalue compounds utilizing CoCuO_(x)@MXene/NF catalyst.Our findings revealed that the electrocatalyst was capable of facilitating the conversion of water into hydrogen(H_(2)),while simultaneously oxidizing ethylene glycol(EG),obtained from PET plastic waste hydrolysis,into formate with a high selectivity and lower initial potential compared to water oxidation.Notably,the exceptional performance was attributed to the synergistic interfacial electronic coupling effect between CoCuO_(x)and MXene,which results in a low overpotential(1.24 V@10 mA cm^(-2))and a high yield of formate product(87.6%).In addition,the electrolyzer could be operated using solar energy panel for upcycling of PET to formic acid and hydrogen fuels by using CoCuO_(x)@MXene catalyst.展开更多
The increasing demand for sustainable energy storage solutions has intensified the focus on high-performance supercapaci-tors,known for their rapid charge/discharge capabilities,high power density,and long cycle life....The increasing demand for sustainable energy storage solutions has intensified the focus on high-performance supercapaci-tors,known for their rapid charge/discharge capabilities,high power density,and long cycle life.Polyurethane(PU)-based materials have gained attention as promising candidates for supercapacitor electrodes,due to their flexibility,mechanical robustness,and tunable properties.It is important to clarify that PU typically does not contribute directly to charge storage via adsorption or pseudocapacitive mechanisms.Instead,PU serves as a flexible scaffold,a binder,or a precursor for the preparation of heteroatom-doped carbon materials upon thermal treatment.Thus,the term'PU-based'in this review refers to PU-supported or PU-derived composites,where PU enables structural or functional integration of active electrode Materi-als.Polyurethane composites incorporating graphene oxide have demonstrated a specific capacitance of 758.8 mF/cm^(2)with capacitance retention of 92%over 5,000 cycles.Other PU-based electrodes have achieved energy densities up to 22.5 Wh/kg and power densities of 1472.7 W/kg,reflecting their potential for high-performance energy storage applications.Despite these advantages,challenges,such as low intrinsic conductivity and the environmental impact of traditional synthesis methods,limit their widespread adoption.Conventional PU composites often incorporate conductive additives like carbon materi-als,metal oxides,or conductive polymers to enhance their electrochemical performance,yet these approaches may involve non-renewable or toxic components.Developing green energy materials that adhere to sustainability and green chemistry principles is crucial to address these limitations.This includes using renewable resources,environmentally friendly process-ing techniques,and recyclable materials to reduce the ecological footprint and meet the growing need for sustainable energy storage technologies.This review highlights current trends in developing eco-friendly supercapacitor materials,addressing key challenges such as limited conductivity and complex processing.It uniquely integrates green chemistry principles with advances in polyurethane composites,emphasizing sustainable feedstocks,heteroatom doping,and functional nanomateri-als.By combining these aspects,this review provides a comprehensive perspective not fully covered in existing literature.展开更多
基金The financial assistance provided by the Centre National de la Recherche Scientifique(CNRS),the University of Lille,the Hautsde-France region,and the CPER“Wavetech”are acknowledgedthe Chinese government for the China Scholarship Council(CSC)fellowship。
文摘A promising way to address environmental problems caused by plastic waste is through its upcycling into renewable energy and resources.With annual production reaching millions of tons,one of the most widely single-use daily plastics,polyethylene terephthalate(PET),has recently been investigated in terms of chemical recycling to reduce its environmental impact and generate renewable fuels.This study introduces an innovative electrochemical method for the specific conversion of PET hydrolysate into highvalue compounds utilizing CoCuO_(x)@MXene/NF catalyst.Our findings revealed that the electrocatalyst was capable of facilitating the conversion of water into hydrogen(H_(2)),while simultaneously oxidizing ethylene glycol(EG),obtained from PET plastic waste hydrolysis,into formate with a high selectivity and lower initial potential compared to water oxidation.Notably,the exceptional performance was attributed to the synergistic interfacial electronic coupling effect between CoCuO_(x)and MXene,which results in a low overpotential(1.24 V@10 mA cm^(-2))and a high yield of formate product(87.6%).In addition,the electrolyzer could be operated using solar energy panel for upcycling of PET to formic acid and hydrogen fuels by using CoCuO_(x)@MXene catalyst.
基金Open access funding provided by The Science,Technology&Innovation Funding Authority(STDF)in cooperation with The Egyp-tian Knowledge Bank(EKB).
文摘The increasing demand for sustainable energy storage solutions has intensified the focus on high-performance supercapaci-tors,known for their rapid charge/discharge capabilities,high power density,and long cycle life.Polyurethane(PU)-based materials have gained attention as promising candidates for supercapacitor electrodes,due to their flexibility,mechanical robustness,and tunable properties.It is important to clarify that PU typically does not contribute directly to charge storage via adsorption or pseudocapacitive mechanisms.Instead,PU serves as a flexible scaffold,a binder,or a precursor for the preparation of heteroatom-doped carbon materials upon thermal treatment.Thus,the term'PU-based'in this review refers to PU-supported or PU-derived composites,where PU enables structural or functional integration of active electrode Materi-als.Polyurethane composites incorporating graphene oxide have demonstrated a specific capacitance of 758.8 mF/cm^(2)with capacitance retention of 92%over 5,000 cycles.Other PU-based electrodes have achieved energy densities up to 22.5 Wh/kg and power densities of 1472.7 W/kg,reflecting their potential for high-performance energy storage applications.Despite these advantages,challenges,such as low intrinsic conductivity and the environmental impact of traditional synthesis methods,limit their widespread adoption.Conventional PU composites often incorporate conductive additives like carbon materi-als,metal oxides,or conductive polymers to enhance their electrochemical performance,yet these approaches may involve non-renewable or toxic components.Developing green energy materials that adhere to sustainability and green chemistry principles is crucial to address these limitations.This includes using renewable resources,environmentally friendly process-ing techniques,and recyclable materials to reduce the ecological footprint and meet the growing need for sustainable energy storage technologies.This review highlights current trends in developing eco-friendly supercapacitor materials,addressing key challenges such as limited conductivity and complex processing.It uniquely integrates green chemistry principles with advances in polyurethane composites,emphasizing sustainable feedstocks,heteroatom doping,and functional nanomateri-als.By combining these aspects,this review provides a comprehensive perspective not fully covered in existing literature.
