Well dispersed Pt nanoparticles on commercial carbon black oxidized by ozone possess significantly high electro-catalytic activity for methanol oxidation

被引：26

作者：

Chang, Xiaomei ^{[1
,2
]}

Dong, Fang ^{[2
]}

Yang, Sai ^{[1
,2
]}

Tang, Zhicheng ^{[2
]}

Zha, Fei ^{[1
]}

机构：

[1] Northwest Normal Univ, Coll Chem & Chem Engn, Lanzhou 730070, Gansu, Peoples R China

[2] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Natl Engn Res Ctr Fine Petrochem Intermediates, Lanzhou 730000, Gansu, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 39期

基金：

中国国家自然科学基金;

关键词：

Pt nanoparticle; Methanol electro-oxidation reaction; Ozone heattreatment; Oxygenated functional groups; REDUCED GRAPHENE OXIDE; ENHANCED ELECTROCATALYTIC ACTIVITY; FACILE SYNTHESIS; PLATINUM NANOPARTICLES; MESOPOROUS CARBONS; EFFICIENT; NANOTUBES; PERFORMANCE; ELECTROOXIDATION; FABRICATION;

D O I：

10.1016/j.ijhydene.2019.06.084

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：

In this paper, the electro-catalytic methanol oxidation on the commercial carbon black treated with ozone at different temperatures to support platinum (Pt) nanoparticles was investigated. The necessary techniques like transmission electron microscopy (TEM), Raman spectroscopy, nitrogen adsorption-desorption techniques, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) have been used to discovery the composition, morphology and structure of the catalysts. The electro-catalytic methanol oxidation activity and durability of the catalysts was estimated by the cyclic voltammetry and chronoamperometric techniques. The results indicated that the platinum nanoparticles with average sizes of 2.04 nm can be uniformly dispersed on the surfaces of carbon black oxidized by ozone at 140 degrees C. In the meanwhile it has significantly high electro-catalytic activity for methanol oxidation. This phenomenon is attributed to the fact that ozone oxidation increase the content of oxygen-containing groups on the carbon black, which is helpful for improving the dispersion and decreasing the size of platinum nanoparticles. Oxygen-containing groups play a critical role in enhancing the performance of methanol electro-oxidation. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：21559 / 21568

页数：10