Hollow spheres self-assembled by MoO2 nanocones as highly sensitive substrate for Surface-Enhanced Raman Spectroscopy

Yangyang Zhang; Hao Wu; Zhenghao Liu; Shuhong Xie; Jiangyu Li

Journal of Materiomics (Mar 2021)

Hollow spheres self-assembled by MoO2 nanocones as highly sensitive substrate for Surface-Enhanced Raman Spectroscopy

Yangyang Zhang,
Hao Wu,
Zhenghao Liu,
Shuhong Xie,
Jiangyu Li

Affiliations

Yangyang Zhang: Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan, 411105, China; Shenzhen Key Laboratory of Nanobiomechanics, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, Guangdong, China
Hao Wu: School of Management Science and Engineering, Anhui University of Finance & Economics, Bengbu, Anhui, 233030, China; Shenzhen Key Laboratory of Nanobiomechanics, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, Guangdong, China; Corresponding author. School of Management Science and engineering, Anhui University of Finance & Economics, Bengbu, Anhui, 233030, China.
Zhenghao Liu: Shenzhen Key Laboratory of Nanobiomechanics, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, Guangdong, China
Shuhong Xie: Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan, 411105, China; Corresponding author. Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan, 411105, China.
Jiangyu Li: Shenzhen Key Laboratory of Nanobiomechanics, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, Guangdong, China; Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China; Corresponding author. Shenzhen Key Laboratory of Nanobiomechanics, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, Guangdong, China.

Journal volume & issue: Vol. 7, no. 2
pp. 347 – 354

Abstract

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Surface-Enhanced Raman Spectroscopy attracts great interests for its ability to detect a variety of molecules at trace level. However, the commonly used noble metal substrates suffer from high cost, poor biocompatibility and inferior stability. Some oxides have the potential to substitute for noble metal and much effort has been made to improve their performance. In this paper, MoO2 nanocones were prepared and self-assembled into hollow spheres. The structure exhibits an enhancement factor (EF) of 3 × 107 and a limit of detection (LOD) of 10−9 M for Rhodamine 6G (R6G). This performance is among the best of all the oxides and is comparable to that of Au and Ag. The morphology control of hollow MoO2 sphere was also discussed.

Published in Journal of Materiomics

ISSN: 2352-8478 (Print); 2352-8486 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.sciencedirect.com/journal/journal-of-materiomics

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