文献类型：期刊文献

英文题名：Perovskite Microcrystals with Intercalated Monolayer MoS2 Nanosheets as Advanced Photocatalyst for Solar-Powered Hydrogen Generation

作者：Zhao, Xiaole[1,2];Chen, Shan[1];Yin, Huajie[1];Jiang, Shuaiyu[1];Zhao, Kun[1];Kang, Jian[1];Liu, Peng Fei[4];Jiang, Lixue[1];Zhu, Zhengju[1];Cui, Dandan[5,6];Liu, Porun[1];Han, Xiaojun[2];Yang, Hua Gui[4];Zhao, Huijun[1,3]

机构：[1]Griffith Univ, Ctr Clean Environm & Energy, Southport, Qld 4222, Australia;[2]Harbin Inst Technol, Sch Chem & Chem Engn, State Key Lab Urban Water Resource & Environm, 92 West Da Zhi St, Harbin 150001, Peoples R China;[3]Chinese Acad Sci, Inst Solid State Phys, Ctr Environm & Energy Nanomat, CAS Ctr Excellence Nanosci, Hefei 230031, Peoples R China;[4]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[5]Beihang Univ, Sch Phys, Beijing 100191, Peoples R China;[6]Beihang Univ, BUAA UOW Joint Res Ctr, Beijing 100191, Peoples R China

年份：2020

卷号：3

期号：3

起止页码：935

外文期刊名：MATTER

收录：;EI(收录号：20203309059527);WOS:【SCI-EXPANDED(收录号:WOS:000568562300006)】；

基金：This work was financially supported by the Australian Research Council Discovery Project (DP170104834) and Griffith University Postdoctoral Fellowships (2016 and 2017). X.Z. acknowledges the China Scholarship Council (no. 201706120323) for financial support.

语种：英文

外文关键词：Microcrystals - Heterojunctions - Solar energy - Hydrogen production - Molybdenum compounds - Electric fields - Layered semiconductors - Perovskite - Solar power generation

摘要：Photocatalytic water splitting holds a key to realizing the hydrogen economy but faces a grand challenge, namely, the severe charge recombination causes low solar-to-hydrogen (STH) efficiency. This work reports a new form of MAPbI(3) microcrystal (MAPbI(3)-MC)/monolayer MoS2 nanosheets (ML-MoS2) composite photocatalyst with type II heterojunction to effectively suppress the charge recombination for efficient photocatalytic hydrogen generation via HI splitting. The ML-MoS2/MAPbI(3)-MC is made of a large-sized MAPbI(3)-MC light harvester anchored with electrocatalytically active ML-MoS2 nanosheets to form a type II heterojunction that possesses a strong built-in electric field aligned between the spatially well-defined MAPbI(3)-MC andML-MoS2 nanosheets to empower the photocatalyst with superior capability to effectively promote the charge separation. The ML-MoS2/MAPbI(3)-MC brings the hydrogen generation performance of the perovskite-based photocatalysts to a new horizon with a champion STH efficiency of 1.09% and a record hydrogen generation activity of 13.6 mmol g(-1) h(-1) under visible light.