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ACS Appl Mater Interfaces. 2019 Jun 5;11(22):20521-20527. doi: 10.1021/acsami.9b03465. Epub 2019 May 22.

Shockley Partial Dislocation-Induced Self-Rectified 1D Hydrogen Evolution Photocatalyst.

Author information

1
MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , China.
2
College of Biology and the Enviroment , Nanjing Forestry University , Nanjing 210037 , PR China.
3
Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering , Jiangsu University , Zhenjiang 212013 , PR China.

Abstract

Photocatalytic stability and efficient charge separation are key factors to photocatalytic performance for visible-light-driven H2 evolution from water. Here, we report a whole novel self-rectified photocatalyst constructed from the Shockley partial dislocation-induced multiple faults, using a ternary chalcogenide, that is, Cd0.8Zn0.2S nanorod as a model material. The introduction of multiple faults, which are typical planar defects, constructs a nanorectifier that aligns along the axial direction and constitutes a relatively ordered superstructure. The band bending and Fermi-level flattening at the nanorectifier would cause the photogenerated charge carriers to be transferred reversely at the axial direction on account of the charge type and then realize the separation of the charge carriers.

KEYWORDS:

Charge Separation; Photocatalyst; Shockley partial dislocation; fault; self-rectified superstructure

PMID:
31081314
DOI:
10.1021/acsami.9b03465

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