N-Doping Holey Graphene TiO2-Pt Composite as Efficient Electrocatalyst for Methanol Oxidation

被引：31

作者：

Cui, Rongli ^{[1
]}

Liu, Shuaichao ^{[2
]}

Guo, Xihong ^{[1
]}

Huang, Huan ^{[1
]}

Wang, Jiahao ^{[1
]}

Liu, Bing ^{[1
]}

Li, Ying ^{[1
]}

Zhao, Dangui ^{[1
]}

Dong, Jinquan ^{[1
]}

Sun, Baoyun ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, CAS Key Lab Biomed Effects Nanomat & Nanosafety, Beijing 100049, Peoples R China

[2] Inner Mongolia Univ, Coll Chem & Chem Engn, Hohhot 010021, Peoples R China

来源：

ACS APPLIED ENERGY MATERIALS | 2020年 / 3卷 / 03期

基金：

中国国家自然科学基金;

关键词：

nanoholes; N-doping graphene; Pt-TiO2; enhanced electrocatalysis; direct methanol fuel cells; NITROGEN-DOPED CARBON; CATALYST SUPPORT; HIGHLY-EFFICIENT; OXYGEN REDUCTION; RECENT PROGRESS; PERFORMANCE; NANOPARTICLES; PLATINUM; OXIDE; ARCHITECTURES;

D O I：

10.1021/acsaem.9b02364

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：

The nitrogen-doped holey graphene oxide/TiO2 (TiO2-NHGO) composite is synthesized as catalyst support for the Pt catalyst. The resulting catalyst, Pt-TiO2-rNHGO, shows higher activity and stability for methanol electrooxidation than the Pt-rGO, Pt-rHGO, and Pt-rNHGO catalysts. The enhancement is because of the combinatory effect of nanoholes in the graphene plane which provide more active sites and efficient mass transport, well-distributed N-doping, and the uniform distribution of TiO2 NPs on NHGO nanosheets which facilitate to form more uniformly dispersed Pt NPs. In addition, the strong interactions among Pt, TiO2, and NHGO also contribute to enhance the performance of catalyst for methanol oxidation.

引用

页码：2665 / 2673

页数：9

共 64 条

[1] Novel synthesis of holey reduced graphene oxide (HRGO) by microwave irradiation method for anode in lithium-ion batteries [J].