物理化学学报2025，Vol.41Issue(6)：123-136,14.DOI:10.1016/j.actphy.2025.100068
废塑料促进S型NiCr2O4/孪晶Cd0.5Zn0.5S同质异质结光催化产氢
Waste plastics promoted photocatalytic H2 evolution over S-scheme NiCr2O4/twinned-Cd0.5Zn0.5S homo-heterojunction
摘要
Abstract
The simultaneous enhancement of separation and utilization of bulk and surface charges is crucial for achieving efficient photocatalytic H2 evolution reactions.In this study,NiCr2O4/T-CZS composites were fabricated by incorporating NiCr2O4 nanosheets onto the surface of twinned Cd0.5Zn0.5S(T-CZS)nanoparticles using a solvent evaporation strategy.After optimization,the 6%NiCr2O4/T-CZS exhibited an impressive hydrogen(H2)evolution rate(rH2)of 81.4 mmol∙h-1∙g-1 when employing polylactic acid(PLA)plastic as a sacrificial agent in NaOH solution.The reason behind this can be mainly attributed to the fact that T-CZS consists of wurtzite Cd0.5Zn0.5S(WZ-CZS)and zinc blende Cd0.5Zn0.5S(ZB-CZS)with slight band structure differences,thereby facilitating rapid bulk phase and interface charge separation due to the S-scheme charge transfer routes between WZ-CZS and ZB-CZS,as well as T-CZS and NiCr2O4.Moreover,this system can effectively retain electrons with strong reducing ability for efficient H2 evolution reaction(HER)and generate hot electrons through the localized surface plasmon resonance(LSPR)effect of NiCr2O4,which enhances the absorption of UV-Vis-NIR light energy,thereby facilitating the HER process.What's more,NaOH solution can indirectly promote the HER kinetics by enhancing the oxidative driving force of holes.Additionally,other metal chromates(MCrxOy),such as CoCr2O4,AgCrO2,Bi6CrO12,BaCrO4,ZnCr2O4,CdCr2O4,CuCr2O4 etc.,were employed to enhance the activity of T-CZS too.The results show that above homo-heterojunction composites can integrate waste plastic degradation and photocatalytic H2 evolution effectively based on their S-scheme bulk phase and interface charge separation mechanisms.This work provides new insights into energy and environmental challenges.关键词
光催化/孪晶Cd0.5Zn0.5S/NiCr2O4/双S转移路径/同质异质结/废塑料Key words
Photocatalyst/Twinned Cd0.5Zn0.5S/NiCr2O4/Double S-scheme/Homo-heterojunctions/Waste plastic分类
化学化工引用本文复制引用
田静卓,官朝红,胡浩斌,刘恩周,杨东元..废塑料促进S型NiCr2O4/孪晶Cd0.5Zn0.5S同质异质结光催化产氢[J].物理化学学报,2025,41(6):123-136,14.基金项目
The project was supported by the Local Science and Development Fund Project Guided by the Central Government(24ZYQM001),the National Natural Science Foundation of China(22378326,11974276,22078261),the Natural Science Basic Research Program of Shaanxi Province(2023-JC-YB-115),the Shaanxi Key Science and Technology Innovation Team Project(2022TD-33),the Excellent Doctoral Dissertation Cultivation Program at Northwestern University(YB2024012),and the Program of China Scholarship Council(202406970056).中央引导地方科技发展资金项目(24ZYQM001),国家自然科学基金(22378326,11974276,22078261),陕西省自然科学基础研究计划(2023-JC-YB-115),陕西重点科技创新团队项目(2022TD-33),西北大学优秀博士学位论文培养计划(YB2024012),中国国家留学基金委员会项目(202406970056)资助 （24ZYQM001）
