文献类型：期刊文献

英文题名：Spatially Separated CdS Shells Exposed with Reduction Surfaces for Enhancing Photocatalytic Hydrogen Evolution

作者：Xing, Mingyang[1,2];Qiu, Bocheng[1,2];Du, Mengmeng[1,2];Zhu, Qiaohong[1,2];Wang, Lingzhi[1,2];Zhang, Jinlong[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2017

卷号：27

期号：35

外文期刊名：ADVANCED FUNCTIONAL MATERIALS

收录：;EI(收录号：20173003982407);WOS:【SCI-EXPANDED(收录号:WOS:000411027300013)】；

基金：This work was supported by National Nature Science Foundation of China (Nos. 21577036, 21377038, 21237003, and 21677048) and State Key Research Development Program of China (No. 2016YFA0204200). The work was sponsored by "Chenguang Program" supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission (Nos. 14CG30 and 16JC1401400) and the Fundamental Research Funds for the Central Universities (Nos. 22A201514021 and 222201717003).

语种：英文

外文关键词：CdS shells; H-2 evolution; photocatalysis; reduction surface; spatial separation

摘要：To the photocatalytic H-2 evolution, the exposure of a reduction surface over a catalyst plays an important role for the reduction of hydrogen protons. Here, this study demonstrates the design of a noble-metal-free spatially separated photocatalytic system exposed with reduction surfaces (MnOx@CdS/CoP) for highly solar-light-driven H-2 evolution activity. CoP and MnOx nanoparticles are employed as the electron and hole collectors, which are selectively anchored on the outer and inner surface of CdS shells, respectively. Under solar light irradiation, the photogenerated holes and electrons can directionally move to the MnOx and CoP, respectively, leading to the exposure of a reduction surface. As a result, the H-2 evolution increases from 32.0 to 238.4 mu mol h(-1), which is even higher than the activity of platinum-loaded photocatalyst (MnOx@CdS/Pt). Compared to the pure CdS with serious photocorrosion, the MnOx@CdS/CoP maintains a changeless activity for the H-2 evolution and rhodamine B degradation, even after four cycles. The research provides a new strategy for the preparation of spatially separated photocatalysts with a selective reduction surface.