甲醇
碳化
催化作用
电催化剂
材料科学
碳纳米管
铂金
碳纤维
化学工程
纳米颗粒
铂纳米粒子
无机化学
纳米技术
电化学
复合材料
化学
电极
有机化学
扫描电子显微镜
物理化学
复合数
工程类
作者
Tong Wang,Jianting He,Qin Wu,Yunqi Yu,Kangcheng Chen,Daxin Shi,Yaoyuan Zhang,Hansheng Li
出处
期刊:Carbon
[Elsevier]
日期:2023-01-01
卷期号:201: 200-211
被引量:7
标识
DOI:10.1016/j.carbon.2022.08.058
摘要
A series of platinum-based catalyst Pt/Co/N-PC (N-doped porous carbon)/N-CNTs (N-doped carbon nanotubes) were prepared successfully by loading Pt nanoparticles on the winterberries-like 3D network of Co/N-PC/N-CNTs, which was obtained from carbonization of in-situ grew ZIF-67/PPy (polypyrrole). The Pt nanoparticles with about 2.5 nm in diameter uniformly dispersed on the Co/N-PC/N-CNTs. The prepared electrocatalyst Pt/Co/N-PC/N-CNTs exhibited excellent activity toward methanol electrocatalytic oxidation reaction. The mass activity (583 mA·mg−1Pt) tested by the Cyclic voltammograms reached 2.1-fold greater than that of commercial Pt/C. The steady-state current density (42.3 mA·mg−1Pt) tested by the chronoamperometric measurement reached 6.9-fold higher than that of commercial Pt/C. The outstanding methanol oxidation activity and stability of the Pt/Co/N-PC/N-CNTs were ascribed to the rich nitrogen-containing sites, large specific surface area and 3D conductive network of the winterberries-like carbon support Co/N-PC/N-CNTs, which displayed excellent support of Pt-based catalyst and has potential industrial applications.
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