Highly reproducible surface-enhanced Raman scattering substrate for detection of phenolic pollutants

Zhiqiang Zeng; Dan Tang; Liwei Liu; Yin Wang; Qingwei Zhou; Shaoqiang Su; Die Hu; Bing Han; Mingliang Jin; Xianyu Ao; Runze Zhan; Xingsen Gao; Xubing Lu; Guofu Zhou; Stephan Senz; Zhang Zhang; Junming Liu

doi:10.1088/0957-4484/27/45/455301

Highly reproducible surface-enhanced Raman scattering substrate for detection of phenolic pollutants

Nanotechnology. 2016 Nov 11;27(45):455301. doi: 10.1088/0957-4484/27/45/455301. Epub 2016 Oct 4.

Authors

Zhiqiang Zeng¹, Dan Tang, Liwei Liu, Yin Wang, Qingwei Zhou, Shaoqiang Su, Die Hu, Bing Han, Mingliang Jin, Xianyu Ao, Runze Zhan, Xingsen Gao, Xubing Lu, Guofu Zhou, Stephan Senz, Zhang Zhang, Junming Liu

Affiliation

¹ Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, People's Republic of China.

PMID: 27698285
DOI: 10.1088/0957-4484/27/45/455301

Abstract

The ordering degree of nanostructures is the key to determining the uniformity of surface-enhanced Raman scattering (SERS). However, fabrication of large-area ordered nanostructures remains a challenge, especially with the ultrahigh-density (>10¹⁰ cm^-2). Here, we report a fabrication of large-area ultrahigh-density ordered Ag@Al₂O₃/Ag core-shell nanosphere (NS) arrays with tunable nanostructures. The ultrahigh-density (2.8 × 10¹⁰ cm^-2) ordered NS arrays over a large-area capability (diameter >4.0 cm) enable the uniform SERS signals with the relative standard deviation of less than 5%. The as-fabricated highly reproducible SERS substrate can be applied to detect trace phenolic pollutants in water. This work does not only provide a new route for synthesizing the ultrahigh-density ordered nanostructures, but also create a new class of SERS substrates with high sensitivity and excellent reproducibility.