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SERS spectral evolution of azo-reactions mediated by plasmonic Au@Ag core-shell nanorods

文献类型：期刊论文

作者Hu, Mengen2,3; Huang, Zhulin2,3; Liu, Rui1,2; Zhou, Ningning1; Tang, Haibin2,3; Meng, Guowen2,3
刊名NANOSCALE ADVANCES
出版日期2022-09-13
ISSN号2516-0230
DOI10.1039/d2na00486k
通讯作者Huang, Zhulin(zlhuang@issp.ac.cn)
英文摘要The mechanism and application of localized surface plasmon resonance induced photocatalytic reactions remain an issue of interest. In this work, we used Au@Ag core-shell nanorods as a platform for plasmon-driven photocatalysis, which was in situ investigated by surface-enhanced Raman scattering (SERS) spectroscopy. The para-aminothiophenol (PATP) and para-nitrothiophenol (PNTP) adsorbed on the nanorods were irradiated with different excitation wavelengths (633 nm, 785 nm) and transformed into 4,4'-dimercaptoazobenzene (DMAB) as evidenced by the emerging Raman peaks at 1142 cm(-1) , 1390 cm(-1) , 1440 cm(-1) , and 1477 cm(-1) , corresponding to hot carrier dominated oxidation of PATP and reduction of PNTP. Preliminary azo-reaction kinetics and in situ SERS measurements were conducted by comparing the relative intensity ratio of SERS peaks at 1440 cm(-1 )(DMAB stretching of N=N) and 1080 cm(-1) (C-S stretching of PATP and PNTP). These results indicate that the catalytic efficiency was dominated by the excitation wavelength as well as the resonance condition between the plasmon band of the nanorods and the excitation line. As a proof of concept, the Au@Ag core-shell nanorods were used to catalyze 4-nitrophenol molecules, and 4-hydroxyazobenzene molecules as the product were confirmed by in situ SERS spectra as well theoretical predictions, showing potential in plasmon driven catalysis and degradation of organic molecules.
WOS关键词ENHANCED RAMAN-SPECTROSCOPY ; CATALYTIC COUPLING REACTION ; METAL NANOSTRUCTURES ; P-AMINOTHIOPHENOL ; CHEMICAL ENERGY ; SILVER ; GOLD ; NANOPARTICLES ; RESONANCES ; OXIDATION
资助项目National Natural Science Foundation of China[52222208] ; National Natural Science Foundation of China[52072373] ; National Natural Science Foundation of China[21673245] ; National Natural Science Foundation of China[51972308] ; HFIPS Director's Fund[BJPY2021B04] ; HFIPS Director's Fund[YZJJZX202019] ; Natural Science Foundation of Anhui Province[2008085ME171] ; Natural Science Foundation of Anhui Province[201903a07020021] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDJSSWSLH046]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
语种英语
出版者ROYAL SOC CHEMISTRY
WOS记录号WOS:000861544100001
资助机构National Natural Science Foundation of China ; HFIPS Director's Fund ; Natural Science Foundation of Anhui Province ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/129111]  
专题中国科学院合肥物质科学研究院
通讯作者Huang, Zhulin
作者单位1.Hefei Univ, Dept Chem & Mat Engn, Hefei 230601, Peoples R China
2.Chinese Acad Sci, Inst Solid State Phys, HFIPS, Key Lab Mat Phys,Anhui Key Lab Nanomat & Nanotech, Hefei 230031, Peoples R China
3.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Mengen,Huang, Zhulin,Liu, Rui,et al. SERS spectral evolution of azo-reactions mediated by plasmonic Au@Ag core-shell nanorods[J]. NANOSCALE ADVANCES,2022.
APA Hu, Mengen,Huang, Zhulin,Liu, Rui,Zhou, Ningning,Tang, Haibin,&Meng, Guowen.(2022).SERS spectral evolution of azo-reactions mediated by plasmonic Au@Ag core-shell nanorods.NANOSCALE ADVANCES.
MLA Hu, Mengen,et al."SERS spectral evolution of azo-reactions mediated by plasmonic Au@Ag core-shell nanorods".NANOSCALE ADVANCES (2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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