文献类型：期刊文献

中文题名：原子级分散Pt锚定于Al3+ 掺杂SrTiO3 用于光催化全解水

英文题名：Atomically dispersed Pt species anchored on Al3+-doped SrTiO3 for photocatalytic overall water splitting

作者：Wang, Mengmin[1];Li, Zhenming[1];Li, Wenbo[2,3];Li, Wenjing[1];Zhang, Yang[1];Ding, Pengcheng[1];Tang, Yuyang[1];Yuan, Haiyang[1];Dai, Sheng[2,3];Wang, Xuelu[4,5];Liu, Pengfei[1];Yang, Huagui[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[4]East China Normal Univ, Inst Magnet Resonance & Mol Imaging Med, Sch Phys, Phys Dept, Shanghai 200241, Peoples R China;[5]East China Normal Univ, Inst Magnet Resonance & Mol Imaging Med, Sch Phys, Shanghai Key Lab Magnet Resonance, Shanghai 200241, Peoples R China

年份：2026

外文期刊名：SCIENCE CHINA-MATERIALS

收录：;EI(收录号：20260620031817);WOS:【SCI-EXPANDED(收录号:WOS:001681159100001)】；

基金：This work was supported by the National Key Research and Development Program of China (2023YFA1507102), the National Natural Science Foundation of China (22239001 and 22572052), the Shanghai Pilot Program for Basic Research (22TQ1400100-12), the Science and Technology Commission of Shanghai Municipality (25ZR1402129) and the Fundamental Research Funds for the Central Universities. The authors also thank the Frontiers Science Center for Materiobiology and Dynamic Chemistry, and the 1W1B-XAFS Beamline of Beijing Synchrotron Radiation Facility (https://cstr.cn/31109.02.BSRF.1W1B) for providing technical support and assistance in XAFS data collection.

语种：中文

外文关键词：charge carrier dynamics; photocatalytic overall water splitting; single-atom co-catalysts; SrTiO3; nuclear magnetic resonance

摘要：Single-atom co-catalysts engineered on semiconductor substrates offer a cost-efficient pathway to improve the photocatalytic performance with minimal precious metal loading. However, the precise tuning of local coordination environments and the construction of efficient single-atom co-catalysts remain challenging for photocatalytic overall water splitting systems. In this work, we have employed an icing-assisted photochemical reduction strategy to anchor atomically dispersed Pt species as hydrogen evolution co-catalysts on Al3+-doped SrTiO3 (Pt SA-STO) for photocatalytic overall water splitting. The optimized Pt SA-STO exhibits remarkable photocatalytic performance, achieving hydrogen and oxygen evolution rates of 13.62 and 6.71 mmol h(-1) g(-1), respectively, along with a turnover frequency (TOF) value of 2114.5 h(-1). We pioneer the application of nuclear magnetic resonance (NMR) spectroscopy to quantitatively characterize the temporal evolution of Pt4+ to Pt2+ under continuous irradiation during the icing-assisted photoreduction process; besides, advanced characterizations and theoretical calculations well evidence that single-atom Pt co-catalysts facilitate directional transfer and extraction of photogenerated charge carriers, effectively suppressing surface recombination of photogenerated electron-hole pairs. This work offers valuable insights into the design of novel single-atom co-catalysts by deepening the understanding of electronic configurations and active sites in photocatalytic overall water splitting.