期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 36, 页码 20061-20067出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b05116
关键词
noble-metal nanocrystals; graphene; hollow sphere network; electrocatalyst utilization; self-assembly route
资金
- National Natural Science Foundation of China [21376122, 21273116, 51401110]
- Natural Science Foundation of Jiangsu Province [BK20130900]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
Herein, we rationally design and construct a novel type of sparsely studded noble-metal nanocrystals inside graphene hollow sphere network (abbreviated as noble-metal@G HSN) through an electrostatic-attraction-directed self-assembly approach. The formation of Pt@G and Pd@G hollow sphere networks have been illustrated as examples using SiO2 spheres as templates. Moreover, the electrocatalytic performance of the Pt@G HSN for methanol oxidation reaction has been examined as a proof-of-concept demonstration of the compositional and structural superiorities of noble-metal@G HSN toward electrocatalyst utilization. The as-prepared Pt@G HSN manifests higher catalytic activity and markedly enhanced long-term durability in comparison with commercial Pt/C catalyst.
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