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

被引：8
|
作者：
Zhang, Yangyang [1 ,3 ]
Wu, Hao [2 ,3 ]
Liu, Zhenghao [3 ]
Xie, Shuhong [1 ]
Li, Jiangyu [3 ,4 ]
机构：
[1] Xiangtan Univ, Key Lab Low Dimens Mat & Applicat Technol, Minist Educ, Sch Mat Sci & Engn, Xiangtan 411105, Hunan, Peoples R China
[2] Anhui Univ Finance & Econ, Sch Management Sci & Engn, Bengbu 233030, Anhui, Peoples R China
[3] Chinese Acad Sci, Shenzhen Key Lab Nanobiomech, Shenzhen Inst Adv Technol, Shenzhen 518055, Guangdong, Peoples R China
[4] Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
来源：
JOURNAL OF MATERIOMICS | 2021年 / 7卷 / 02期
基金：
中国国家自然科学基金;
关键词：
SERS; Oxide; MoO2; Hollow sphere; Self-assembly; NANOPARTICLES; SCATTERING; NANOSTRUCTURES; NANOSHEETS; STABILITY; MOLECULES; SPECTRA;
D O I：
10.1016/j.jmat.2020.06.008
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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 x 10(7) 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. (C) 2020 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.
引用
收藏
页码：347 / 354
页数：8
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