|ZnO-dotted porous ZnS cluster microspheres for high efficient, Pt-free photocatalytic hydrogen evolution|
|Wu, AP; Jing, LQ; Wang, JQ; Qu, Y; Xie, Y; Jiang, BJ; Tian, CG; Fu, HG
|Source Publication||SCIENTIFIC REPORTS
|Abstract||The Pt-free photocatalytic hydrogen evolution (PHE) has been the focus in the photocatalysis field. Here, the ZnO-dotted porous ZnS cluster microsphere (PCMS) is designed for high efficient, Pt-free PHE. The PCMS is designed through an easy "controlling competitive reaction'' strategy by selecting the thiourea as S2- source and Zn(Ac)(2)center dot 2H(2)O as Zn source in ethylene glycol medium. Under suitable conditions, one of the PCMS, named PCMS-1, with high SBET specific area of 194 m(2)g(-1), microsphere size of 100 nm and grain size of 3 nm can be obtained. The formation of PCMS is verified by TEM, XAES, XPS, Raman and IR methods. Importantly, a series of the experiments and theoretical calculation demonstrate that the dotting of ZnO not only makes the photo-generated electrons/hole separate efficiently, but also results in the formation of the active catalytic sites for PHE. As a result, the PCMS-1 shows the promising activity up to 367 mu mol h(-1) under Pt-free condition. The PHE activity has no obvious change after addition 1 wt.% Pt, implying the presence of active catalytic sites for hydrogen evolution in the PCMS-1. The easy synthesis process, low preparation cost of the PCMS makes their large potential for Pt-free PHE.|
Wu, AP,Jing, LQ,Wang, JQ,et al. ZnO-dotted porous ZnS cluster microspheres for high efficient, Pt-free photocatalytic hydrogen evolution[J]. SCIENTIFIC REPORTS,2015,5:—.
Wu, AP.,Jing, LQ.,Wang, JQ.,Qu, Y.,Xie, Y.,...&Fu, HG.(2015).ZnO-dotted porous ZnS cluster microspheres for high efficient, Pt-free photocatalytic hydrogen evolution.SCIENTIFIC REPORTS,5,—.
Wu, AP,et al."ZnO-dotted porous ZnS cluster microspheres for high efficient, Pt-free photocatalytic hydrogen evolution".SCIENTIFIC REPORTS 5(2015):—.
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