期刊
POLYMER
卷 137, 期 -, 页码 195-200出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2017.12.069
关键词
Yolk-shell nanoparticle; Hypercrosslinking; Microporous polymer; Catalyst; Antibacterial agent
资金
- National Natural Science Foundation of China [51372280, 51422307, U1601206, 51703254]
- National Program for Support of Top-notch Young Professionals, Guangdong Natural Science Funds for Distinguished Young Scholar [S2013050014408]
- Tip-top Scientific and Technical Innovative Youth Talents of Guangdong Special Support Program [2014TQ01C337]
- Fundamental Research Funds for the Central Universities [15lgjc17]
- National Key Basic Research Program of China [2014CB932400]
A new class of yolk-shell structured precious metal@microporous polymer nanoparticles has been successfully developed. The polymer shells obtained by hypercrosslinking present well-developed permanent microporosity, controllable thickness, and good mechanical properties, and thus can be utilized to protect the precious metal yolks including Au and Ag nanoparticles from aggregation and inactivation. As a result, compared with unprotected Au nanoparticles, Au@microporous polymer nanoparticles not only present a higher utilization efficiency for the catalytic reduction of nitrobenzene and 4-nitrophenol, but also have a much longer cycling life. Ag@microporous polymer nanoparticles demonstrate highly efficient and long-lasting antibacterial properties, since the microporous shells enable the nanoparticles to release Ag+ from the Ag yolk to the solution in a long-term manner. We hope that our versatile yolk-shell nanoparticles will offer a new thought to solve the structural problems of yolk-shell materials, and thus provide a great opportunity for a spectrum of applications including medicine, catalysis, energy, adsorption and environment. (c) 2018 Elsevier Ltd. All rights reserved.
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