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

文献类型：期刊论文

作者Chen, Yan1,2; Zhang, Zhiyang1,3; Wu, Yanzhou1; Wu, Yixuan1; Wang, Jianping2,4; Liu, Meichun1,2; Chen, Lingxin1,3
刊名LANGMUIR
出版日期2024-10-02
卷号40期号:41页码:21832-21841
ISSN号0743-7463
DOI10.1021/acs.langmuir.4c03096
通讯作者Zhang, Zhiyang(zyzhang@yic.ac.cn) ; Chen, Lingxin(lxchen@yic.ac.cn)
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.
WOS关键词FACILE PHASE-TRANSFER ; NANOPOROUS FILM ; SERS ; SIZE ; PH ; SENSITIVITY ; ADSORPTION ; SEPARATION ; NANOWIRES ; STABILITY
WOS研究方向Chemistry ; Materials Science
语种英语
WOS记录号WOS:001327115100001
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
源URL[http://ir.yic.ac.cn/handle/133337/36497]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
烟台海岸带研究所_山东省海岸带环境工程技术研究中心
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.

入库方式： OAI收割

来源：烟台海岸带研究所

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