文献类型：期刊文献

英文题名：Photoinduced Mott-Schottky heterojunction Strengthens active hydrogen for efficient formic acid dehydrogenation

作者：Shen, Jianhua[1];Chen, Xuefei[1];Hong, Can[1];Li, Zongyin[2];Zhu, Yihua[1,2]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Key Lab Ultrafine Mat, Minist Educ,Frontiers Sci Ctr Materiobiol & Dynam, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Sci & Technol Dev, Shanghai 200237, Peoples R China

年份：2025

卷号：311

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20251418169962);WOS:【SCI-EXPANDED(收录号:WOS:001466361500001)】；

基金：This work was supported by the National Natural Science Foundation of China (22178106, 22278136, U22B20143), the Science and Technology Commission of Shanghai Municipality (23ZR1416400, 22dz1205900), Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutes of High Learning, and the Fundamental Research Funds for the Central Universities (222201718002).

语种：英文

外文关键词：Light-induced enhancement; Heterogeneous catalyst; Mott-Schottky; Formic acid dehydrogenation; Photoinduced catalysis

摘要：Herein, we prepared formic acid (FA) dehydrogenation catalyst Au4Pd6/N-TiO2-x by loading AuPd alloy onto Ndoped TiO2-x, which exhibited the initial turnover frequency (TOF) value of 8053 h- 1 at 333 K. The TOF value increased to 8948 h- 1, and the corresponding Ea value decreased from 38.05 to 33.41 KJ mol- 1 with 100 % selectivity under light. Theoretical calculations showed that the synergistic combination of the Mott-Schottky (M-S) effect between AuPd alloy and N-TiO2-x optimized the electronic structure of the active center Pd. This effectively accelerates the transfer of electrons from Au and N-TiO2-x to the Pd sites under illumination. In addition, electron paramagnetic resonance (EPR) showed that the catalyst was capable of generating a large amount of active hydrogen under photoinduction, which together with the M-S synergy lowered the energy barrier for the conversion of HCOOH* to HCOO*, thus improving the performance of the photoinduced catalytic dehydrogenation of FA.