Au/Ag composite-based SERS nanoprobe of Cr3+

被引:10
作者
Cheng, Wendai [1 ]
Tang, Ping [1 ,2 ]
He, Xuanmeng [1 ]
Xing, Xinyue [1 ]
Liu, Shengde [1 ]
Zhang, Feng [1 ]
Lu, Xiaoxu [1 ]
Zhong, Liyun [2 ]
机构
[1] South China Normal Univ, Guangdong Prov Key Lab Nanophoton Funct Mat & Dev, Guangzhou 510006, Peoples R China
[2] Guangdong Univ Technol, Guangdong Prov Key Lab Photon Informat Technol, Guangzhou 510006, Peoples R China
基金
中国国家自然科学基金;
关键词
Surface-enhanced Raman scattering (SERS); Au/Ag composite nanoprobes; nanoprobe; Cr3+ content; COLORIMETRIC DETECTION; GOLD NANOPARTICLES; CHROMIUM(III); TRANSFERRIN; TRANSPORT; BINDING; SENSOR; ION;
D O I
10.1007/s00216-021-03228-4
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Quantitative characterization of Cr3+, an important element revealing human metabolism and biological environmental variation, is still difficult to achieve by conventional biochemical methods due to the lack of high-sensitivity, real-time techniques with rapid response detection. Using surface-enhanced Raman scattering (SERS), we construct an Au/Ag composite-based SERS nanoprobe for the quantitative characterization of Cr3+ content in solution, in which DL-mercaptosuccinic acid (DL-MSA) is employed for Raman signal enhancement, and 4-mercaptobenzoic acid (4-MBA) is chosen as the Raman reporter. The achieved result demonstrates obvious advantages of the synthesized Au/Ag composite-based SERS nanoprobe in sensitivity and response speed. Importantly, this Au/Ag composite-based SERS nanoprobe might provide a new strategy for dynamic monitoring of Cr3+ content in human metabolism.
引用
收藏
页码:2951 / 2960
页数:10
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