Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/122591
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Graphitic carbon nitride decorated with CoP nanocrystals for enhanced photocatalytic and photoelectrochemical H₂ evolution |
Other Titles: | Graphitic carbon nitride decorated with CoP nanocrystals for enhanced photocatalytic and photoelectrochemical H2 evolution |
Author: | Liu, Y. Zhang, J. Li, X. Yao, Z. Zhou, L. Sun, H. Wang, S. |
Citation: | Energy and Fuels, 2019; 33(11):11663-11676 |
Publisher: | American Chemical Society |
Issue Date: | 2019 |
ISSN: | 0887-0624 1520-5029 |
Statement of Responsibility: | Yazi Liu, Jinqiang Zhang, Xiaojie Li, Zhengxin Yao, Li Zhou, Hongqi Sun, and Shaobin Wang |
Abstract: | Polydispersed CoP nanoparticles in an orthorhombic phase were synthesized via a gas–solid reaction and then deposited over graphitic carbon nitride to build the CoP/g-C₃N₄ (CoP–CN) heterostructure. Nanorod-like CoP nanoparticles with a length of 10–80 nm were connected to g-C₃N₄ nanosheets to build an intimate face-to-face contact via their crystal planes of (011) and (211). This unique heterojunction hybrid exhibits superior photocatalytic and photoelectrochemical performances for H₂ evolution and photoelectrochemical response plus excellent overall water-splitting activity. The optimal sample of 3% CoP–CN composite achieved a superior hydrogen production rate at 1038.1 μmol h⁻¹ g⁻¹ when irradiated by simulated solar light, exhibiting a much higher photocurrent at 150 μA cm⁻² compared to pure g-C₃N₄. Also, a larger anodic current density was detected during the photoelectrochemical hydrogen evolution reactions (PEC HERs) with enhanced applied bias photon-to-current efficiency, denoting a higher efficiency for PEC HER. The enhancements for photocatalytic and PEC HER activity are mainly attributed to the formation of intimate interfacial contact for better light absorption, stronger photoreductive potentials, and higher efficiency for charge separation and transfer. This study provides a proof-of-concept design and construction of effective cobalt-phosphide-based heterojunctions for hydrogen evolution and water-splitting applications. |
Rights: | © 2019 American Chemical Society |
DOI: | 10.1021/acs.energyfuels.9b02705 |
Grant ID: | http://purl.org/au-research/grants/arc/DP150103026 http://purl.org/au-research/grants/arc/LE120100026 |
Published version: | http://dx.doi.org/10.1021/acs.energyfuels.9b02705 |
Appears in Collections: | Aurora harvest 4 Chemical Engineering publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.