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Materials 2017, 10(8), 955; doi:10.3390/ma10080955

Pt-Co Alloys-Loaded Cubic SiC Electrode with Improved Photoelectrocatalysis Property

1
State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
2
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
*
Author to whom correspondence should be addressed.
Received: 20 July 2017 / Revised: 8 August 2017 / Accepted: 9 August 2017 / Published: 16 August 2017
(This article belongs to the Section Energy Materials)
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Abstract

A novel composite photocatalyst was synthesized by loading 5 wt % of platinum cobalt alloy on 3C-SiC nanowires and powder (Pt-Co-SiC) respectively via a simple polyol reduction method. Pt-Co-SiC were comprehensively characterized by SEM, HRTEM, XRD, PL, and XPS. The results indicated that Pt-Co nanoparticles in the size of 2–5 nm were dispersed homogeneously in the SiC nanowires and powders. The photocurrent response of the Pt-Co-SiC increased remarkably with increasing Pt content and the best performance was observed with the sample of Pt3Co-SiC. Especially, the Pt3Co-SiC nanowires photoelectrode exhibited improved cathodic current density (0.14 mA·cm−2) under the simulated sunlight, which was about 10 times higher than the Pt3Co-SiC powders. The H2 production rate for the Pt3Co-SiC nanowires is 30 times more than that of the pure SiC nanowires. The enhancement of the Pt-Co-SiC properties could be ascribed to the fact that more visible light was harvested and the photogenerated electron and the interfacial electron transfered more easily. View Full-Text
Keywords: photoelectrocatalytic; 3C-SiC; Pt-Co alloys; nanowires; powders photoelectrocatalytic; 3C-SiC; Pt-Co alloys; nanowires; powders
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Liu, D.; Yang, T.; Chen, J.; Chou, K.-C.; Hou, X. Pt-Co Alloys-Loaded Cubic SiC Electrode with Improved Photoelectrocatalysis Property. Materials 2017, 10, 955.

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