title: Robustly photogenerating H2 in water using FeP/CdS catalyst under solar irradiation.
abstract: Photosplitting water for H2 production is a promising, sustainable approach for solar-to-chemical energy conversion. However, developing low-cost, high efficient and stable photocatalysts remains the major challenge. Here we report a composite photocatalyst consisting of FeP nanoparticles and CdS nanocrystals (FeP/CdS) for photogenerating H2 in aqueous lactic acid solution under visible light irradiation. Experimental results demonstrate that the photocatalyst is highly active with a H2-evolution rate of 202000 μmol h(-1) g(-1) for the first 5 h (106000 μmol h(-1) g(-1) under natural solar irradiation), which is the best H2 evolution activity, even 3-fold higher than the control in situ photo-deposited Pt/CdS system, and the corresponding to an apparent quantum efficiency of over 35% at 520 nm. More important, we found that the system exhibited excellent stability and remained effective after more than 100 h in optimal conditions under visible light irradiation. A wide-ranging analysis verified that FeP effectively separates the photoexcited charge from CdS and showed that the dual active sites in FeP enhance the activity of FeP/CdS photocatalysts.
authors.affiliation: Key Laboratory of Photochemical Conversion and Optoelectronic Materials and HKU-CAS Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.|College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, P. R. China.
authors.forename: Huanqing
authors.initials: H
authors.lastname: Cheng
authors.affiliation: Key Laboratory of Photochemical Conversion and Optoelectronic Materials and HKU-CAS Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
authors.forename: Xiao-Jun
authors.initials: XJ
authors.lastname: Lv
authors.affiliation: Key Laboratory of Photochemical Conversion and Optoelectronic Materials and HKU-CAS Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
authors.forename: Shuang
authors.initials: S
authors.lastname: Cao
authors.affiliation: Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China.
authors.forename: Zong-Yan
authors.initials: ZY
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Photochemical Conversion and Optoelectronic Materials and HKU-CAS Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Key Laboratory of Photochemical Conversion and Optoelectronic Materials and HKU-CAS Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.|College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, P. R. China.
authors.forename: Wen-Fu
authors.initials: WF
authors.lastname: Fu
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