In-Situ Monitoring the SERS Spectra of para-Aminothiophenol Adsorbed on Plasmon-Tunable Au@Ag Core-Shell Nanostars

doi:10.3390/nano12071156

	In-Situ Monitoring the SERS Spectra of para-Aminothiophenol Adsorbed on Plasmon-Tunable Au@Ag Core-Shell Nanostars
	Ke, Yan 1,2; Chen, Bin 1,2,3; Hu, Mengen 1,2,3; Zhou, Ningning 4; Huang, Zhulin 1,2,3; Meng, Guowen 1,2,3
刊名	NANOMATERIALS
	2022-04-01
卷号	12
关键词	plasmon-driven photocatalysis SERS nanostars resonant excitation
DOI	10.3390/nano12071156
通讯作者	Huang, Zhulin(zlhuang@issp.ac.cn) ; Meng, Guowen(gwmeng@issp.ac.cn)
英文摘要	Plasmon-induced photocatalysis on noble metal surfaces has attracted broad attention due to its application in sunlight energy conversion, while the selectivity of plasmonic platforms remains unclear. Herein, we present the controlled plasmon-mediated oxidation of para-aminothiophenol (p-ATP) by employing Au@Ag core-shell nanostars with tunable tip plasmons in visible-near-infrared range as reactors. In-situ Raman measurements indicate that Au@Ag core-shell nanostars essentially promote the conversion of p-ATP to 4,4 '-dimercaptoazobenzene (DMAB) due to hot carriers excited by localized surface plasmon resonance. Au@Ag nanostars with plasmon modes under resonant light excitation suggested higher catalytic efficiency, as evidenced by the larger intensity ratios between 1440 cm(-1) (N=N stretching of DMAB) and 1080 cm(-1) shifts (C-S stretching of p-ATP). Importantly, the time-dependent surface-enhanced Raman scattering spectra showed that the conversion efficiency of p-ATP was mainly dictated by the resonance condition between the tip plasmon mode of Au@Ag core-shell nanostars and the excitation light, as well as the choice of excitation wavelength. These results show that plasmon bands of metal nanostructures play an important role in the efficiency of plasmon-driven photocatalysis.
资助项目	Natural Science Foundation of China[52072373] ; Natural Science Foundation of China[21673245] ; Natural Science Foundation of China[51632009] ; Natural Science Foundation of China[91963202] ; Natural Science Foundation of China[52102324] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-SLH046] ; Presidential Foundation of Hefei Institutes of Physical Science, CAS[BJPY2021B04] ; Presidential Foundation of Hefei Institutes of Physical Science, CAS[YZJJZX202019] ; Hefei National Laboratory for Physical Sciences at the Microscale[KF2020109] ; Collaborative Innovation Program of Hefei Science Center, CAS[2020HSC-CIP013]
WOS关键词	HOT-CARRIER ; NANOPARTICLES ; SOLAR ; NANOSTRUCTURES ; INTERFACES ; SILVER
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000781468700001
资助机构	Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Presidential Foundation of Hefei Institutes of Physical Science, CAS ; Hefei National Laboratory for Physical Sciences at the Microscale ; Collaborative Innovation Program of Hefei Science Center, CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/128555]
专题	中国科学院合肥物质科学研究院
通讯作者	Huang, Zhulin; Meng, Guowen
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HIPS, Hefei 230031, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, HIPS, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.Hefei Univ, Dept Chem & Mat Engn, Hefei 230601, Peoples R China
推荐引用方式 GB/T 7714	Ke, Yan,Chen, Bin,Hu, Mengen,et al. In-Situ Monitoring the SERS Spectra of para-Aminothiophenol Adsorbed on Plasmon-Tunable Au@Ag Core-Shell Nanostars[J]. NANOMATERIALS,2022,12.
APA	Ke, Yan,Chen, Bin,Hu, Mengen,Zhou, Ningning,Huang, Zhulin,&Meng, Guowen.(2022).In-Situ Monitoring the SERS Spectra of para-Aminothiophenol Adsorbed on Plasmon-Tunable Au@Ag Core-Shell Nanostars.NANOMATERIALS,12.
MLA	Ke, Yan,et al."In-Situ Monitoring the SERS Spectra of para-Aminothiophenol Adsorbed on Plasmon-Tunable Au@Ag Core-Shell Nanostars".NANOMATERIALS 12(2022).