Conductometric Response-Triggered Surface-Enhanced Raman Spectroscopy for Accurate Gas Recognition and Monitoring Based on Oxide-wrapped Metal Nanoparticles

doi:10.1021/acssensors.0c00188

	Conductometric Response-Triggered Surface-Enhanced Raman Spectroscopy for Accurate Gas Recognition and Monitoring Based on Oxide-wrapped Metal Nanoparticles
	Bao, Haoming 2; Zhang, Hongwen 2; Zhang, Peng 1,2; Fu, Hao 1,2; Zhou, Le 1,2; Li, Yue 1,2; Cai, Weiping 1,2
刊名	ACS SENSORS
	2020-06-26
卷号	5
关键词	conductometric response-triggered SERS accurate gas recognition real-time gas monitoring ultrathin oxide-wrapped metal nanoparticles Au@SnO2 nanoparticles
ISSN号	2379-3694
DOI	10.1021/acssensors.0c00188
通讯作者	Zhang, Hongwen(hwzhang@issp.ac.cn) ; Cai, Weiping(wpcai@issp.ac.cn)
英文摘要	Accurate and efficient gas monitoring is still a challenge because the existing sensing techniques mostly lack specific identification of gases or hardly meet the requirement of real-time readout. Herein, we present a strategy of conductometric response-triggered surface-enhanced Raman spectroscopy (SERS) for such gas monitoring, via designing and using ultrathin oxide-wrapped plasmonic metal nanoparticles (NPs). The oxide wrapping layer can interact with and capture target gaseous molecules and produce the conductometric response, while the plasmonic metal NPs possess strong SERS activity. In this strategy, the conductometric gas sensing is performed throughout the whole monitoring process, and once a conductometric response is generated, it will trigger SERS measurements, which can accurately recognize molecules and hence realize gas monitoring. The feasibility of this strategy has been demonstrated via using ultrathin SnO2 layer-wrapped Au NP films to monitor gaseous 2-phenylethanethiol molecules. It has been shown that the monitoring is rapid, accurate, and quantifiable. There exist optimal values of working temperature and SnO2 layer thickness, which are about 100 degrees C and 2.5 nm, respectively, for monitoring gaseous 2-phenylethanethiol. The monitoring signal intensity has a linear relation with the gas concentration in the range from 1 to 100 ppm on a logarithmic scale. Furthermore, the monitoring limits are at the ppm level for some typical gases, such as 2-phenylethanethiol, cyclohexanethiol, 1-dodecanethiol, and toluene. This study establishes the conductometric response-triggered SERS, which enables accurate gas recognition and real-time monitoring.
资助项目	National Key Research and Development Program of China[2017YFA0207101] ; National Natural Science Foundation of China[51531006] ; National Natural Science Foundation of China[11974352] ; National Natural Science Foundation of China[51771182] ; Chinese Postdoctoral Science Foundation[2019M662211]
WOS关键词	SENSING PROPERTIES ; GOLD NANOPARTICLES ; PLASMON RESONANCE ; SCATTERING ; SILVER ; AU ; NANOSTRUCTURES ; MONOLAYERS ; MOLECULES ; DESIGN
WOS研究方向	Chemistry ; Science & Technology - Other Topics
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000545694100018
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Chinese Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/71253]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Hongwen; Cai, Weiping
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Bao, Haoming,Zhang, Hongwen,Zhang, Peng,et al. Conductometric Response-Triggered Surface-Enhanced Raman Spectroscopy for Accurate Gas Recognition and Monitoring Based on Oxide-wrapped Metal Nanoparticles[J]. ACS SENSORS,2020,5.
APA	Bao, Haoming.,Zhang, Hongwen.,Zhang, Peng.,Fu, Hao.,Zhou, Le.,...&Cai, Weiping.(2020).Conductometric Response-Triggered Surface-Enhanced Raman Spectroscopy for Accurate Gas Recognition and Monitoring Based on Oxide-wrapped Metal Nanoparticles.ACS SENSORS,5.
MLA	Bao, Haoming,et al."Conductometric Response-Triggered Surface-Enhanced Raman Spectroscopy for Accurate Gas Recognition and Monitoring Based on Oxide-wrapped Metal Nanoparticles".ACS SENSORS 5(2020).