Preparation of SiO2@Au nanorod array as novel surface enhanced Raman substrate for trace pollutants detection

doi:10.1088/1674-1056/24/3/034203

›› 2015, Vol. 24 ›› Issue (3): 34203-034203.doi: 10.1088/1674-1056/24/3/034203

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Preparation of SiO₂@Au nanorod array as novel surface enhanced Raman substrate for trace pollutants detection

侯孟婧^a, 张弦^a, 崔肖阳^a, 刘灿^a, 李正操^b, 张政军^b

a State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
b Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

收稿日期:2014-08-04 修回日期:2014-09-22 出版日期:2015-03-05 发布日期:2015-03-05
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2013CB934301), the National Natural Science Foundation of China (Grant No. 50931002), the Research Project of Chinese Ministry of Education (Grant No. 113007A), and the Initiative Scientific Research Program of Tsinghua University, China

Preparation of SiO₂@Au nanorod array as novel surface enhanced Raman substrate for trace pollutants detection

Hou Meng-Jing (侯孟婧)^a, Zhang Xian (张弦)^a, Cui Xiao-Yang (崔肖阳)^a, Liu Can (刘灿)^a, Li Zheng-Cao (李正操)^b, Zhang Zheng-Jun (张政军)^b

a State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
b Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

Received:2014-08-04 Revised:2014-09-22 Online:2015-03-05 Published:2015-03-05
Contact: Zhang Zheng-Jun E-mail:zjzhang@tsinghua.edu.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2013CB934301), the National Natural Science Foundation of China (Grant No. 50931002), the Research Project of Chinese Ministry of Education (Grant No. 113007A), and the Initiative Scientific Research Program of Tsinghua University, China

摘要/Abstract

摘要： An effective surface enhanced Raman scattering (SERS) substrate is designed and fabricated by synthesis of SiO₂ nanorods array via glancing angle deposition, followed by coating Au nanoparticles onto SiO₂ surface in order to create numerous “hot spots”. The detecting sensitivity of such substrate could be optimized by simply adjusting the deposition time of Au. Thus, it can be used for detection of Rhodamine 6G at concentration as low as 10^-9 M. Furthermore, our SERS substrate is applied to detect 5 μg/g polychlorinated biphenyls in soil sample, which proves its potential for trace environmental pollutants detection.

关键词: surface enhanced Raman scattering, trace pollutant detection, SiO₂ nanorods, Au nanoparticles

Abstract: An effective surface enhanced Raman scattering (SERS) substrate is designed and fabricated by synthesis of SiO₂ nanorods array via glancing angle deposition, followed by coating Au nanoparticles onto SiO₂ surface in order to create numerous “hot spots”. The detecting sensitivity of such substrate could be optimized by simply adjusting the deposition time of Au. Thus, it can be used for detection of Rhodamine 6G at concentration as low as 10^-9 M. Furthermore, our SERS substrate is applied to detect 5 μg/g polychlorinated biphenyls in soil sample, which proves its potential for trace environmental pollutants detection.

Key words: surface enhanced Raman scattering, trace pollutant detection, SiO₂ nanorods, Au nanoparticles

中图分类号: (Raman lasers)

42.55.Ye

91.62.Rt (Land pollution, soil pollution)

侯孟婧, 张弦, 崔肖阳, 刘灿, 李正操, 张政军. Preparation of SiO₂@Au nanorod array as novel surface enhanced Raman substrate for trace pollutants detection[J]. , 2015, 24(3): 34203-034203.

Hou Meng-Jing (侯孟婧), Zhang Xian (张弦), Cui Xiao-Yang (崔肖阳), Liu Can (刘灿), Li Zheng-Cao (李正操), Zhang Zheng-Jun (张政军). Preparation of SiO₂@Au nanorod array as novel surface enhanced Raman substrate for trace pollutants detection[J]. Chin. Phys. B, 2015, 24(3): 34203-034203.

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Preparation of SiO₂@Au nanorod array as novel surface enhanced Raman substrate for trace pollutants detection

Preparation of SiO₂@Au nanorod array as novel surface enhanced Raman substrate for trace pollutants detection

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