Rational design and synthesis of bifunctional metal nanocrystals for probing catalytic reactions by surface-enhanced Raman scattering
Rational design and synthesis of bifunctional metal nanocrystals for probing catalytic reactions by surface-enhanced Raman scattering
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DOI：
10.1039/c8tc01394b
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发表时间：
2018-05
影响因子：
6.4
通讯作者：
Yun Zhang;Yiren Wu;D. Qin
中科院分区：
文献类型：
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作者：
Yun Zhang;Yiren Wu;D. Qin
本报告重点介绍了最近的进展，合理的设计，合成，并与集成Sers和催化活性的纳米晶体的应用。最终目标是开发双功能纳米晶体作为Sers探针，用于原位监测催化反应。我们首先介绍种子生长作为一种简便和强大的路线，以合成的双功能纳米晶体的催化活性所产生的Au或Pd，除了从银或Au的等离子体特性。具体而言，我们讨论了两个独特的途径，即保形和选址沉积的第二金属的表面上的贵金属的纳米晶种子，用于制造双功能纳米晶体与控制的组成和形态。然后我们讨论了这些双功能纳米晶体作为独特的探针，用于原位Sers监测Au或Pd催化的NaBH 4还原4-硝基苯硫酚为4-氨基苯硫酚和Ag催化的空气中的O2氧化4-氨基苯硫酚为反式-4，4 ′-二巯基偶氮苯。最后，我们对未来的发展进行了展望。
This report highlights recent progress in the rational design, synthesis, and applications of bimetallic nanocrystals with integrated SERS and catalytic activities. The ultimate goal is to develop bifunctional nanocrystals as a SERS probe for monitoring a catalytic reaction in situ. We first introduce seeded growth as a facile and powerful route to the syntheses of bifunctional nanocrystals with catalytic activities arising from Au or Pd, in addition to plasmonic properties originating from Ag or Au. Specifically, we discuss two distinctive pathways, namely conformal and site-selected deposition of a second metal on the surface of a noble-metal nanocrystal seed, for the fabrication of bifunctional nanocrystals with controlled composition and morphology. We then discuss the application of these bifunctional nanocrystals as unique probes for in situ SERS monitoring of the Au or Pd-catalyzed reduction of 4-nitrothiophenol to 4-aminothiophenol by NaBH4 and the Ag-catalyzed oxidation of 4-aminothiophenol to trans-4,4′-dimercaptoazobenzene by the O2 from air. We conclude this review with perspectives on the future development.