期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 11, 期 14, 页码 5777-5784出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.0c01577
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资金
- Natural Science Foundation of Jiangsu Province [BK20180723, BK20191366]
- National Natural Science Foundation of China [21972097]
- Jiangsu Specially Appointed Professor Plan
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- National and Local Joint Engineering Research Center of Biomedical Functional Materials
Hollow gold (Au)-based nanostructures have recently been developed for various applications. However, current nanosynthesis approaches have not yet successfully been implemented for precisely engineering hollow Au-based nanostructures with uniform and well-defined mesoporous shell frameworks. Here, we develop an easy one-pot seedless strategy for fabricating hollow mesoporous AuAg (h-mesoAuAg) nanospheres by combining the galvanic replacement reaction with the surfactant-templated growth. Thiol-terminated multifunctional C22H45N+(CH3)(2)-C3H6-SH (Cl-) (C22N-SH) as the functional surfactant is the key that facilitates the formation of covalently stable C22N-S-Au(I) and C22N-S-Ag(I) intermediates. Such intermediates template in situ growth of mesoAuAg shell on initially nucleated Ag-rich seeds through the galvanic replacement reaction. Hierarchically hollow/mesoporous nanostructures and corresponding optical responses of h-mesoAuAg are also precisely engineered by tailoring synthetic parameters. With structural and compositional advantages, h-mesoAuAg nanospheres exhibit promising electrochemical performances toward methanol oxidation reaction and nonenzymatic glucose sensor.
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