Enhancing the Selectivity of H2O2 Electrogeneration by Steric Hindrance Effect

被引：87
作者：
Xiao, Xue [1 ,3 ]
Wang, Tianjiao [1 ]
Bai, Juan [1 ]
Li, Fumin [2 ]
Ma, Tianyi [3 ]
Chen, Yu [1 ]
机构：
[1] Shaanxi Normal Univ, Key Lab Macromol Sci Shaanxi Prov, Key Lab Appl Surface & Colloid Chem MOE, Shaanxi Key Lab Adv Energy Devices,Sch Mat Sci &, Xian 710062, Shaanxi, Peoples R China
[2] Shaanxi Normal Univ, Sch Chem & Chem Engn, Xian 710062, Shaanxi, Peoples R China
[3] Univ Newcastle, Discipline Chem, Callaghan, NSW 2308, Australia
来源：
ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 49期
基金：
澳大利亚研究理事会;
关键词：
H2O2; electrogeneration; oxygen reduction reaction; inorganic-organic interface; steric hindrance effect; selectivity; NITROGEN-DOPED CARBON; HYDROGEN-PEROXIDE; ELECTROCHEMICAL PRODUCTION; EFFICIENT ELECTROCATALYST; CHEMICAL-REDUCTION; OXYGEN; CATALYSTS; SURFACE; PERFORMANCE; NANOTUBES;
D O I：
10.1021/acsami.8b17283
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Selective hydrogen peroxide (H2O2) electrogeneration by oxygen reduction reaction (ORR) is an efficient and promising synthetic method for H2O2 production. Herein, we build a particular inorganic organic interface to enhance the electrocatalytic selectivity of reduced graphene oxide (rGO) aerogels for H2O2 electrogeneration by modifying rGO aerogels with polyethyleneimine (PEI). The three-dimensional porous structure of aerogels and the steric hindrance effect of PEI on rGO endow PEI-functionalized rGO (rGO/PEI) aerogels with enhanced selectivity (90.7%), production rate (106.4 mmol g(cat)(-1) h(-1)), and durability for H2O2 electrogeneration by the two-electron pathway of ORR.
引用
收藏
页码：42534 / 42541
页数：8
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