电合成
塔菲尔方程
催化作用
纳米颗粒
碳纳米管
材料科学
X射线光电子能谱
电催化剂
纳米技术
化学工程
电化学
碳纤维
化学
电极
有机化学
复合材料
物理化学
复合数
工程类
作者
Longcheng Zhang,Jie Liang,Luchao Yue,Zhaoquan Xu,Kai Dong,Qian Liu,Yonglan Luo,Tingshuai Li,Xiaohong Cheng,Guanwei Cui,Bo Tang,Abdulmohsen Ali Alshehri,Khalid Ahmed Alzahrani,Xiaodong Guo,Xuping Sun
出处
期刊:Nano Research
[Springer Nature]
日期:2021-04-26
卷期号:15 (1): 304-309
被引量:107
标识
DOI:10.1007/s12274-021-3474-0
摘要
Electrocatalytic oxygen reduction reaction (ORR) provides an attractive alternative to anthraquinone process for H2O2 synthesis. Rational design of earth-abundant electrocatalysts for H2O2 synthesis via a two-electron ORR process in acids is attractive but still very challenging. In this work, we report that nitrogen-doped carbon nanotubes as a multi-functional support for CoSe2 nanoparticles not only keep CoSe2 nanoparticles well dispersed but alter the crystal structure, which in turn improves the overall catalytic behaviors and thereby renders high O2-to-H2O2 conversion efficiency. In 0.1 M HClO4, such CoSe2@NCNTs hybrid delivers a high H2O2 selectivity of 93.2% and a large H2O2 yield rate of 172 ppm·h-1 with excellent durability up to 24 h. Moreover, CoSe2@NCNTs performs effectively for organic dye degradation via electro-Fenton process.Supplementary material (SEM images, EDX mapping images, XPS spectrum, XRD patterns, RRDE voltammogram, Tafel plots, cyclic voltammograms, UV-Vis spectra, and Tables S1) is available in the online version of this article at 10.1007/s12274-021-3474-0.
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