物理化学学报2025，Vol.41Issue(12)：99-110,12.DOI:10.1016/j.actphy.2025.100158
无机-有机CdS/YBTPy S型光催化剂高效产氢及其机理
Inorganic-organic CdS/YBTPy S-scheme photocatalyst for efficient hydrogen production and its mechanism
摘要
Abstract
S-scheme heterojunctions have garnered significant attention for efficient photocatalytic H2 evolution due to their superior charge separation and maximized redox potential.In this study,we developed a novel pyrene-benzothiadiazole conjugated polymer(YBTPy)through Yamamoto coupling,followed by the in situ deposition of CdS nanoparticles via a solvothermal method to construct a CdS/YBTPy S-scheme heterojunction photocatalyst.The optimized composite,designated as CP5,demonstrated a hydrogen production rate of 5.01 mmol h-1 g-1,representing a 4.2-fold enhancement compared to pristine CdS(1.20 mmol h-1 g-1).The characteristic S-scheme charge transfer pathway at the heterojunction interface was elucidated using in situ irradiated X-ray photoelectron spectroscopy in conjunction with Kelvin probe force microscopy.Additionally,femtosecond transient absorption spectroscopy was employed to investigate the dynamics of photogenerated charge carriers.This work provides a new theoretical foundation for the design of organic-inorganic hybrid S-scheme photocatalytic systems.关键词
共轭聚合物/S型异质结/光催化产氢/飞秒瞬态吸收光谱Key words
Conjugated polymers/S-scheme heterojunction/Photocatalytic hydrogen evolution/Femtosecond transient absorption spectroscopy分类
化学化工引用本文复制引用
Mian Wei,Chang Cheng,Bowen He,Bei Cheng,Kezhen Qi,Chuanbiao Bie..无机-有机CdS/YBTPy S型光催化剂高效产氢及其机理[J].物理化学学报,2025,41(12):99-110,12.基金项目
The authors acknowledge the financial support from the National Key Research and Development Program of China(2022YFB3803600),the National Natural Science Foundation of China(22202187,U24A2071,22278324,22361142704,22409181 and U23A20102),the Hubei Provincial Natural Science Foundation of China(2025AFB492 and 2022CFA001),and the Key R&D Program Projects in Hubei Province(2023BAB113). 国家重点研发计划(2022YFB3803600),国家自然科学基金(22202187,U24A2071,22278324,22361142704,22409181 和U23A20102),湖北省自然科学基金(2025AFB492和2022CFA001)以及湖北省重点研发计划项目(2023BAB113)资助 （2022YFB3803600）
