Plastic pollution and elevated atmospheric CO_(2) levels remain critical environmental challenges,whereas methane is increasingly recognized as a valuable feedstock for producing high-value chemicals.Photocatalysis of...Plastic pollution and elevated atmospheric CO_(2) levels remain critical environmental challenges,whereas methane is increasingly recognized as a valuable feedstock for producing high-value chemicals.Photocatalysis offers a promising approach to harness abundant solar energy,converting it into sustainable and eco-friendly chemical energy for applications such as plastic degradation,CO_(2) reduction,and methane oxidation.ZnO-based composites stand out due to their large surface areas,tunable band structures,and abundant active sites,making them highly suitable for these photocatalytic processes.Nonetheless,pure ZnO is hindered by rapid recombination of photoinduced e^(-)/h^(+)pairs and limited absorption of visible light,restricting its photocatalytic efficiency.This review explores the fundamental mechanisms,synthesis strategies,and various ZnO-based composite materials that enhance photocatalytic plastic degradation,CO_(2) conversion,and methane oxidation.Special attention is paid to identifying key challenges and how the formation of ZnO composites addresses these issues within the different catalytic reaction pathways to improve overall photocatalytic activity.Finally,existing challenges and prospective research avenues are discussed to guide future advancements.展开更多
基金funding this work through a Large Research Project under grant number RGP2/643/46.
文摘Plastic pollution and elevated atmospheric CO_(2) levels remain critical environmental challenges,whereas methane is increasingly recognized as a valuable feedstock for producing high-value chemicals.Photocatalysis offers a promising approach to harness abundant solar energy,converting it into sustainable and eco-friendly chemical energy for applications such as plastic degradation,CO_(2) reduction,and methane oxidation.ZnO-based composites stand out due to their large surface areas,tunable band structures,and abundant active sites,making them highly suitable for these photocatalytic processes.Nonetheless,pure ZnO is hindered by rapid recombination of photoinduced e^(-)/h^(+)pairs and limited absorption of visible light,restricting its photocatalytic efficiency.This review explores the fundamental mechanisms,synthesis strategies,and various ZnO-based composite materials that enhance photocatalytic plastic degradation,CO_(2) conversion,and methane oxidation.Special attention is paid to identifying key challenges and how the formation of ZnO composites addresses these issues within the different catalytic reaction pathways to improve overall photocatalytic activity.Finally,existing challenges and prospective research avenues are discussed to guide future advancements.
