Synthesis of highly-branched Au@AgPd core/shell nanoflowers for in situ SERS monitoring of catalytic reactions

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Synthesis of highly-branched Au@AgPd core/shell nanoflowers for in situ SERS monitoring of catalytic reactions
	Lai, Yujian; Dong, Lijie; Liu, Rui; Lu, Shaoyu; He, Zuoliang; Shan, Wanyu; Geng, Fanglan; Cai, Yaqi; Liu, Jingfu
刊名	CHINESE CHEMICAL LETTERS
	2020-09
卷号	31 期号:9 页码:2437-2441
关键词	Nanoflower SERS Bifunctional platform AgPd alloy Growth mechanism
ISSN号	1001-8417
英文摘要	Alloy and small size nanostructures are favorable to catalytical performance, but not to surface-enhanced Raman spectroscopy (SERS) applications. Integrating SERS and catalytic activity into the nanocrystals with both alloy and small size structures is of great interest in fabrication of SERS platform to in situ monitor catalytical reaction. Herein, we report a facile method to synthesize Au@AgPd trimetallic nanoflowers (Au@AgPd NEs) with both SERS and catalytic activities, through simultaneous selective growth of Ag and Pd on Au core to form highly-branched alloy shell. These nanocrystals have the properties of small sizes, defects abundance, and highly-dispersed alloy shell which offer superior catalytic activity, while the merits of monodisperse, excellent stability, and highly-branched shell and core/alloy-shell structure promise the enhanced SERS activity. We further studied their growth mechanisms, and found that the ratio of Ag to Pd, sizes of Au core, and surfactant cetyltrimethylammonium bromide together determine this special structure. Using this as-synthesized nanocrystals, a monolayer bifunctional platform with both SERS and catalytical activity was fabricated through self-assembly at air/water interface, and applied to in situ SERS monitoring the reaction process of Pd-catalyzed hydrogenation of 4-nitrothiophenol to 4-aminothiophenol. (C) 2020 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/44815]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Lai, Yujian,Dong, Lijie,Liu, Rui,et al. Synthesis of highly-branched Au@AgPd core/shell nanoflowers for in situ SERS monitoring of catalytic reactions[J]. CHINESE CHEMICAL LETTERS,2020,31(9):2437-2441.
APA	Lai, Yujian.,Dong, Lijie.,Liu, Rui.,Lu, Shaoyu.,He, Zuoliang.,...&Liu, Jingfu.(2020).Synthesis of highly-branched Au@AgPd core/shell nanoflowers for in situ SERS monitoring of catalytic reactions.CHINESE CHEMICAL LETTERS,31(9),2437-2441.
MLA	Lai, Yujian,et al."Synthesis of highly-branched Au@AgPd core/shell nanoflowers for in situ SERS monitoring of catalytic reactions".CHINESE CHEMICAL LETTERS 31.9(2020):2437-2441.