4.7 Article

Unique photocatalytic activities of transition metal phosphide for hydrogen evolution

期刊

JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 541, 期 -, 页码 287-299

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2019.01.101

关键词

CoP; WP; H-2 evolution; Characterization; High photo-catalytic activity

资金

  1. Chinese National Natural Science Foundation [21862002, 41663012]
  2. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University
  3. new technology and system for clean energy catalytic production, Major scientific project of North Minzu University [ZDZX201803]
  4. key scientific research projects of North Minzu University [2017KJ16]
  5. Laboratory for the development and application of electrochemical energy conversion technology, North Minzu University
  6. Ningxia low-grade resource high value utilization and environmental chemical integration technology innovation team project of North Minzu University

向作者/读者索取更多资源

Economical, efficient and stable single photo-catalysts are vital for realizing enhanced photo-catalytic H-2 evolution activity. In this study, we report two n-type single transition metal phosphide with excellent photo-catalytic activity under visible light irradiation, which is of great significance for the discovery and synthesis of novel and more efficient photo-catalysts. And completely controllable synthesis will greatly reduce application costs. Furthermore, the fairly high activity of H-2 evolution of the resulting catalysts having low crystallinity and extremely strong optical properties is reveled in detail via investigating the dynamics of hydrogen generation of CoP and WP. Moreover, it is found that CoP and WP have low band-gap energy and increased optical absorption properties through studies. Meanwhile, low crystallinity state for they also is get by XRD technology. These may be the main reasons why CoP and WP exhibit efficient H-2 evolution activity. In addition, the possible mechanism showing high photocatalytic activity of hydrogen evolution for CoP and WP is proposed by a series of other characterizations, such as SEM, TEM, XPS, BET, transient photo-current response, steady-state fluorescence, transient-state fluorescence and Mott-Schottky studies etc. (C) 2019 Elsevier Inc. All rights reserved.

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