Effect of Pt-Pd hybrid nano-particle on CdS's activity for water splitting under visible light

被引:34
作者
Li, Xiying [1 ]
Liu, Heng [1 ]
Liu, Shuang [1 ]
Zhang, Jing [1 ]
Chen, Wei [1 ]
Huang, Cunping [2 ]
Mao, Liqun [1 ]
机构
[1] Henan Univ, Lab Fine Chem & Ind, Kaifeng 475004, Peoples R China
[2] Univ Cent Florida, Florida Solar Energy Ctr, Orlando, FL 32922 USA
基金
芬兰科学院;
关键词
CdS; Pt-Pd hybrid nanoparticles; Photocatalyst; Water splitting; Hydrogen production; Photocatalytic activity; OXYGEN REDUCTION REACTION; METHANOL OXIDATION; PHOTOCATALYTIC PERFORMANCE; ELECTROCATALYTIC ACTIVITY; FUEL-CELLS; AU-PT; AT-PT; NANOPARTICLES; CATALYSTS; HOLLOW;
D O I
10.1016/j.ijhydene.2016.11.059
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
This paper focuses on the bi-metal co-catalyst of CdS in hydrogen generation from water splitting under visible light. Pt-Pd eutectic alloy NPs was prepared by two-step chemical reduction, and was subsequently loaded on the surface of CdS photo-catalyst by photo induced electrons when water splitting reaction was occurring under 300 W Xe light (lambda > 420 nm). According to the experimental results, the photo-activity is significantly promoted as bi-metal modified on the surface of CdS. The H-2 evolution rate of Pt-Pd/CdS, 25.28 mmol/h/gCat., is ca. 2.4 times as much as that of Pt/CdS, and 3.8 times as much as that of Pd/CdS. HRTEM/ED/EDS revealed that the so-obtained Pt-Pd hybrid NPs with a particle size of 5-8 nm is of similar twin structure. XPS revealed that the as-prepared Pt-Pd bi-metal NPs mainly composed of metallic Pt-0 and Pd-0. UV-Vis diffuse reflectance spectrum of CdS nanoparticles interpreted its trait in visible light adsorption, and PL lifetime indicated that the high active of Pt-Pd/CdS lies in its high separation efficiency. 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:23015 / 23021
页数:7
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