Orientation controlled photogenerated carriers on selfsupporting CdS/Ni_(3)S_(2) paper toward photocatalytic hydrogen evolution and biomass upgrading  

作　　者：Xiao-Yan Liu Qing Cao Gui-Xiang Li Hui Liu Li-Li Zeng Li-Li Zhao Bin Chang Xi-Wen Wang Hong Liu Wei-Jia Zhou 

机构地区：[1]Institute for Advanced Interdisciplinary Research,School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China [2]Institute of Chemical Sciences and Engineering,Ecole Polytechnique Federale de Lausanne,1015Lausanne,Switzerland [3]KAUST Catalysis Center,King Abdullah University of Science and Technology,Thuwal 23955-6900,Kingdom of Saudi Arabia [4]School of Environment and Energy,South China University of Technology,Guangzhou Higher Education Mega Center,Guangzhou 510006,China [5]State Key Laboratory of Crystal Materials,Shandong University,Jinan250100,China [6]School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710054,China

出　　处：《Rare Metals》2024年第5期2015-2025,共11页稀有金属（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.51972147,52022037 and 52202366);Taishan Scholars Project Special Funds(No.tsqn201812083),the Innovative Team Project of Jinan(No.2021GXRC019);the Natural Science Foundation of Shandong Province(Nos.ZR2019YQ20,ZR2021QE011,ZR2021JQ15 and ZR2022YQ42);the King Abdullah University of Science and Technology(KAUST)。

摘　　要：The appropriate regulation of band structure is an effective strategy in constructing efficient photocatalytic systems.Present photocatalytic system mainly employs powder photocatalysts,which makes their recovery reliant on expensive separation processes and severely limits their industrial application.Herein,we constructed a novel CdS/Ni_(3)S_(2)heterostructure using free-standing and flexible nickel fiber paper as the matrix.The regulated energy band structure achieves effective electron–hole separation.The as-synthesized flexible photocatalyst exhibits considerable photocatalytic activity toward the H_(2)evolution reaction under visible-light irradiation,with an H_(2)production rate of5.63μmol·cm^(-2)·h^(-1)(14.1 mmol·g^(-1)cat·h^(-1)according to the catalyst loading content).Additionally,the otherwisewasted excited holes simultaneously drive organic transformations to yield value-added organic products,thus markedly improving the photocatalytic H_(2)evolution rate.Such a photocatalytic system is scaled up further,where a self-supported 20 cm×25 cm sample achieves a champion H_(2)production rate of 60-80μmol·h^(-1)under practical sun irradiation.This newly developed self-supported photocatalyst produces opportunities for practical solar H2production with biomass upgrading.

关 键 词：Self-supporting photocatalyst CdS/Ni_(3)S_(2) heterojunction Hydrogen evolution Biomass upgrading Large-scaleapplication 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学] TQ116.2[化学工程—无机化工]