Surfactant-Free Method to Prevent Gold Nanoparticle Aggregation and Its Surface-Enhanced Raman Scattering Applications

doi:10.1021/acs.langmuir.4c03096

	Surfactant-Free Method to Prevent Gold Nanoparticle Aggregation and Its Surface-Enhanced Raman Scattering Applications
	Chen, Yan 1,2; Zhang, Zhiyang1,3 ; Wu, Yanzhou 1; Wu, Yixuan 1; Wang, Jianping 2,4; Liu, Meichun 1,2; Chen, Lingxin1,3
发表期刊	LANGMUIR
ISSN	0743-7463
	2024-10-02
卷号	40 期号:41 页码:21832-21841
DOI	10.1021/acs.langmuir.4c03096
通讯作者	Zhang, Zhiyang([email protected]) ; Chen, Lingxin([email protected])
英文摘要	The introduction of surfactants to stabilize colloidal citrate-reduced gold nanoparticles (prevent aggregation) is usually used in surface-enhanced Raman scattering (SERS) applications. However, the surfactants have many drawbacks for SERS applications, such as increasing the SERS background and blocking surface active sites. Here, we develop a surfactant-free method to stabilize colloidal cit-AuNPs based on alkali regulation, and this method can prevent gold nanoparticle aggregation under different harsh treatments, including ligand modification, centrifugation-based washing/enrichment, and salt addition. The SERS spectra, density functional theory simulation, and zeta potentials of cit-AuNPs indicate that the stability of enhanced cit-AuNPs under alkaline conditions is attributed to both the increased negative charge density (by similar to 6 times from pH 7 to 12) and the molecular configuration on the metal surface. Compared with surfactant-based methods, this method can well maintain the inherent optical and interface properties of nanoparticles, avoid the SERS background, and avoid blocking of the surface active site due to the presence of surfactants. This method will enable AuNPs to have a wide range of applications in areas such as highly sensitive SERS sensors.
资助机构	National Natural Science Foundation of China ; Key Deployment Project of Centre for Ocean Mega-Research of Science, Chinese Academy of Sciences ; Taishan Scholars Program ; Special Fund for the Scholar Program of Yantai
收录类别	SCI
语种	英语
关键词[WOS]	FACILE PHASE-TRANSFER ; NANOPOROUS FILM ; SERS ; SIZE ; PH ; SENSITIVITY ; ADSORPTION ; SEPARATION ; NANOWIRES ; STABILITY
研究领域[WOS]	Chemistry ; Materials Science
WOS记录号	WOS:001327115100001
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/36521
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
通讯作者	Zhang, Zhiyang; Chen, Lingxin
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res Ctr Coastal Environm Engn & Technol, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Coastal Zone Ecol Environm Monitoring Technol & Eq, Yantai 264003, Peoples R China 4.Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, Beijing Natl Lab Mol Sci,Mol React Dynam Lab, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Chen, Yan,Zhang, Zhiyang,Wu, Yanzhou,et al. Surfactant-Free Method to Prevent Gold Nanoparticle Aggregation and Its Surface-Enhanced Raman Scattering Applications[J]. LANGMUIR,2024,40(41):21832-21841.
APA	Chen, Yan.,Zhang, Zhiyang.,Wu, Yanzhou.,Wu, Yixuan.,Wang, Jianping.,...&Chen, Lingxin.(2024).Surfactant-Free Method to Prevent Gold Nanoparticle Aggregation and Its Surface-Enhanced Raman Scattering Applications.LANGMUIR,40(41),21832-21841.
MLA	Chen, Yan,et al."Surfactant-Free Method to Prevent Gold Nanoparticle Aggregation and Its Surface-Enhanced Raman Scattering Applications".LANGMUIR 40.41(2024):21832-21841.