Co3O4 and CDots nanocrystals on g-C3N4 as a synergetic catalyst for oxygen reduction reaction

被引：8

作者：

Wang, Huihua ^{[1
,2
]}

Yang, Yanmei ^{[1
]}

Qu, Tianpeng ^{[2
]}

Kang, Zhenhui ^{[1
]}

Wang, Deyong ^{[2
]}

机构：

[1] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Peoples R China

[2] Soochow Univ, Sch Iron & Steel, Suzhou 215000, Peoples R China

来源：

GREEN PROCESSING AND SYNTHESIS | 2015年 / 4卷 / 05期

基金：

中国国家自然科学基金;

关键词：

CDots; durability; electrocatalyst; g-C3N4; onset potential; ORR; HIGH ELECTROCATALYTIC ACTIVITY; ELECTROLYTE FUEL-CELLS; CATHODE CATALYST; CARBON; GRAPHENE; ARRAYS;

D O I：

10.1515/gps-2015-0049

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Due to the demand of an efficient, inexpensive and scalable synthesis of an oxygen reduction reaction (ORR) catalyst for practical application in fuel cells, we demonstrate a facile strategy to fabricate the flexible Co3O4C/C3N4 catalyst. The results show that Co3O4 - C/C3N4 exhibits a remarkably enhanced ORR electrocatalytic activity due to the introduction of Co and carbon nanodots (CDots) into the graphitic carbon nitride (g-C3N4) sheet. The electron-transferred number of Co3O4 - C/C3N4 toward ORR is calculated to be about 3.69, suggesting a desirable four-electron pathway. Furthermore, Co3O4 - C/C3N4 shows better durability and tolerance to methanol crossover effects than the commercial platinum (Pt)/C catalyst, indicating a promising potential as an ORR electrocatalyst in practical applications.

引用

页码：411 / 419

页数：9

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