文献类型：期刊文献

英文题名：Single-Atom Pt Loaded Zinc Vacancies ZnO-ZnS Induced Type-V Electron Transport for Efficiency Photocatalytic H2 Evolution

作者：Liu, Yujie[1];Zhu, Qiaohong[1];Tayyab, Muhammad[1];Zhou, Liang[2];Lei, Juying[2];Zhang, Jinlong[1,3]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr,Joint, Key Lab Adv Mat,Shanghai Engn Res Ctr Multimedia, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Natl Engn Lab Ind Wastewater Treatment, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[3]Yancheng Inst Technol, Sch Chem & Chem Engn, Yancheng 224051, Peoples R China

年份：2021

卷号：5

期号：11

外文期刊名：SOLAR RRL

收录：;EI(收录号：20213910958805);WOS:【SCI-EXPANDED(收录号:WOS:000700941300001)】；

基金：This study was supported by National Natural Science Foundation of China (grant nos. 22006038 and 21972040), the Program of Introducing Talents of Discipline to Universities (grant no. B20031), Innovation Program of Shanghai Municipal Education Commission (grant no. 2021-01-07-00-02-E00106), the Science and Technology Commission of Shanghai Municipality (grant no. 20DZ2250400), the China Postdoctoral Science Foundation (grant no. 2020M681209), and Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：photocatalytic H-2 evolution; single-atom Pt; zinc vacancies; ZnO-ZnS

摘要：Semiconductor supported noble metal nanoparticles are widely used in H-2 evolution. Due to the high cost and low catalytic efficiency of noble metals, single-atom catalysts (SACs) are considered as very potential materials to overcome these shortcomings. Herein, the construction of the ZnO-ZnS heterojunction with an excess amount of Zn vacancies promotes the separation of charge carriers and improves the utilization of electrons. Meanwhile, the zinc vacancies on ZnS provide effective anchor sites for Pt atoms, which is beneficial to obtain highly dispersed single Pt atoms catalyst (ZOS-SAPt). Due to the formation of an intermediate energy level by zinc vacancies, the introduction of Pt single atoms promotes the novel type-V electron transport from the conduction band of ZnO to the intermediate energy level and then to the Pt atom. The type-V electron transport not only retains the high reduction potential of photogenerated electrons, but also avoids the loss of carriers. The resultant ZOS-SAPt shows outstanding photocatalytic performance for H-2 evolution under simulated sunlight, reaching 9.6 mmol g(-1) h(-1), which is 201 times that of ZnO-ZnS. These results provide important information for further development of photocatalysts.