Sensitivity and Reusability of SiO2 NRs@ Au NPs SERS Substrate in Trace Monochlorobiphenyl Detection

Mengjing Hou; Yu Huang; Lingwei Ma; Zhengjun Zhang

doi:10.1186/s11671-015-1147-1

Sensitivity and Reusability of SiO2 NRs@ Au NPs SERS Substrate in Trace Monochlorobiphenyl Detection

Nanoscale Res Lett. 2015 Dec;10(1):444. doi: 10.1186/s11671-015-1147-1. Epub 2015 Nov 17.

Authors

Mengjing Hou¹, Yu Huang², Lingwei Ma³, Zhengjun Zhang⁴

Affiliations

¹ State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, People's Republic of China. [email protected].
² State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, People's Republic of China. [email protected].
³ State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, People's Republic of China. [email protected].
⁴ Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, People's Republic of China. [email protected].

Abstract

Surface-enhanced Raman scattering (SERS) effect is quite preferred to detect trace pollutants, and reusable SERS substrate is of important practical value. In this research, a kind of effective SiO2 nanorods (NRs)@ Au nanoparticles (NPs) substrate was fabricated completely with physical methods, and it was quite sensitive so that 1 × 10(-6) M monochlorobiphenyl (CB) could be detected. Furthermore, congeners of CB could be detected by reusing this kind of SERS substrate, and the cleaning treatment between every two detections was very simple. The excellent performance of the reusable SERS substrate indicated its great application potential.

Keywords: Monochlorobiphenyl; Principal component analysis; Reusability; Surface-enhanced Raman scattering; Trace detection.