期刊
RSC ADVANCES
卷 9, 期 18, 页码 10314-10319出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra00733d
关键词
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资金
- Science Fund for Creative Research Groups of the National Natural Science Foundation of China [61621002]
- National Key Research and Development Program of China [2016YFC0800900, 2016YFC0800905, 2016YFC0800905-Z03]
- Research Project of the State Key Laboratory of Industrial Control Technology, Zhejiang University, China [ICT1806]
The controlled synthesis of metallic nanomaterials has attracted the interest of many researchers due to their shape-dependent physical and chemical properties. However, most of the synthesized nanocrystals cannot be combined with spectroscopy to measure the reaction kinetics, thus limiting their use in monitoring the catalytic reaction process to elucidate its mechanism. As a powerful analytical tool, surface-enhanced Raman spectroscopy (SERS) can be used to achieve in situ monitoring of catalytic reactions by developing bifunctional metal nanocrystals with both SERS and catalytic activities. Herein, we have developed a simple one-pot synthesis method for the large-scale and size-controllable preparation of highly rough hydrangea Au hollow nanoparticles. The growth mechanism of flower-like Au hollow nanostructures was also discussed. The hollow nanostructure with a 3D hierarchical flower shell combines the advantages of hollow nanostructure and hierarchical nanostructure, which possess high SERS activity and good catalytic activity simultaneously. Furthermore, the hydrangea Au hollow crystals were used as a bifunctional nanocatalyst for in situ monitoring of the reduction reaction of 4-nitrothiophenol to the 4-aminothiophenol.
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