Co(OH)2/TiO2 heterojunction for selective SERS detection of anionic dyes

被引：0
作者：
Xiangxiang Zhang
Man Zhou
Yang Zhong
Letian Zhang
Jianjian Kang
Lingzhi Wang
机构：
[1] East China University of Science and Technology,Key Lab for Advanced Materials and Institute of Fine Chemicals, Shanghai Engineering Research Center for Multi
来源：
Research on Chemical Intermediates | 2022年 / 48卷
关键词：
TiO; Co(OH); Surface-enhanced Raman scattering; In situ monitoring;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Co(OH)2 modified TiO2 (Co(OH)2/TiO2) was fabricated by a simple precipitation method and applied as a surface enhanced Raman scattering (SERS) substrate. Using triphenylmethane dye acid blue 83 as the analyte, the SERS substrate showed high sensitivity with a detection limit of 1 × 10–7 M and high signal reproducibility with a relative standard deviation of 8.9%. Moreover, the substrate can also be used to in situ monitor the catalytic degradation of Acid blue 83. In addition, compared with cationic triphenylmethane dye, the Co(OH)2/TiO2 substrate presented stronger SERS activity towards anionic counterparts. The easy preparation and high sensitivity and selectivity towards anionic dyes of Co(OH)2/TiO2 provides a robust alternative for promoting the practical application of semiconductor-based SERS substrate in selective detection.
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页码：3347 / 3357
页数：10
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