Confining Sub-Nanometer Pt Clusters in Hollow Mesoporous Carbon Spheres for Boosting Hydrogen Evolution Activity

被引：350

作者：

Wan, Xian-Kai ^{[1
]}

Wu, Hao Bin ^{[2
]}

Guan, Bu Yuan ^{[1
]}

Luan, Deyan ^{[1
]}

Lou, Xiong Wen ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, 62 Nanyang Dr, Singapore 637459, Singapore

[2] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

ADVANCED MATERIALS | 2020年 / 32卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

electrocatalysis; hydrogen evolution reaction; mesoporous carbon; Pt clusters; HIGHLY STABLE ELECTROCATALYSTS; ENHANCED CATALYTIC-ACTIVITY; METAL NANOCLUSTERS; OXIDATION;

D O I：

10.1002/adma.201901349

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electrochemical water splitting is considered as a promising approach to produce clean and sustainable hydrogen fuel. As a new class of nanomaterials with high ratio of surface atoms and tunable composition and electronic structure, metal clusters are promising candidates as catalysts. Here, a new strategy is demonstrated to synthesize active and stable Pt-based electrocatalysts for hydrogen evolution by confining Pt clusters in hollow mesoporous carbon spheres (Pt-5/HMCS). Such a structure would effectively stabilize the Pt clusters during the ligand removal process, leading to remarkable electrocatalytic performance for hydrogen production in both acidic and alkaline solutions. Particularly, the optimal Pt-5/HMCS electrocatalyst exhibits 12 times the mass activity of Pt in commercial Pt/C catalyst with similar Pt loading. This study exemplifies a simple yet effective approach to improve the cost effectiveness of precious-metal-based catalysts with stabilized metal clusters.

引用

页数：8

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