Graphdiyne: A Promising Catalyst-Support To Stabilize Cobalt Nanoparticles for Oxygen Evolution

被引：160

作者：

Li, Jian ^{[1
,2
,3
]}

Gao, Xin ^{[4
]}

Jiang, Xin ^{[1
,2
,3
]}

Li, Xu-Bing ^{[1
,2
,3
]}

Liu, Zhongfan ^{[4
]}

Zhang, Jin ^{[4
]}

Tung, Chen-Ho ^{[1
,2
,3
]}

Wu, Li-Zhu ^{[1
,2
,3
]}

机构：

[1] Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Chinese Acad Sci, Beijing 100190, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Peking Univ, Ctr Nanochem, Beijing Sci & Engn Ctr Nanocarbons, Beijing Natl Lab Mol Sci,Coll Chem & Mol Engn, Beijing 100871, Peoples R China

来源：

ACS CATALYSIS | 2017年 / 7卷 / 08期

基金：

美国国家科学基金会;

关键词：

graphdiyne; catalyst-support; cobalt nanoparticles; water oxidation; catalysis; LAYERED DOUBLE HYDROXIDE; WATER-OXIDATION ACTIVITY; EFFICIENT ELECTROCATALYST; HYDROGEN; NANOCOMPOSITES; SUBSTRATE; OXIDES; PHOTOANODES; PORPHYRINS; NANOSHEETS;

D O I：

10.1021/acscatal.7b01781

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：

Graphdiyne (GDY), with highly pi-conjugated structure of sp(2)- and sp-hybridized carbons, has recently appeared as an allotropic form of carbon nanomaterials. However, the application of this material is far behind its sister graphene. Herein, we attempt to use GDY as catalyst-support to stabilize cobalt nanoparticles for oxygen evolution, which is considered as the bottleneck for water splitting. In terms of close interaction between metal ions and alkyne pi-conjugated networks, the self-supported electrode is made in situ by a facile chemical reduction of Co2+ salt precursor in aqueous solution. The prepared 3D Cu@GDY/Co electrode shows high OER electrocatalytic activity with a small overpotential of nearly 0.3 V and a large unit mass activity of 413 A g(-1) at 1.60 V vs RHE. In the course of 4 h electrolysis, the electrode maintains the relatively constant current density. Our results indicate that the GDY is a promising catalyst support to stabilize metal NPs for oxygen evolution.

引用

页码：5209 / 5213

页数：5

共 55 条

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