芦丁
光电流
分子印迹聚合物
检出限
材料科学
壳聚糖
化学工程
化学
光电子学
核化学
选择性
色谱法
抗氧化剂
有机化学
催化作用
工程类
作者
Jiajia Xi,Hao Wang,Bihong Zhang,Faqiong Zhao,Baizhao Zeng
标识
DOI:10.1016/j.snb.2020.128409
摘要
A molecularly imprinted polymer/Bi2S3/ZnIn2S4/ITO sensor was fabricated and used for the photoelectrochemical detection of rutin. The Bi2S3/ZnIn2S4 composite was synthesized by solvothermal method and it displayed good photoelectrochemical property because of the matched energy levels of Bi2S3 and ZnIn2S4. In addition, ZnIn2S4 could improve the stability of the composite and avoid photocorrosion. The photocurrent signal of the Bi2S3/ZnIn2S4 composite was much larger than that of Bi2S3 and ZnIn2S4 under visible-light irradiation. Moreover, rutin imprinted chitosan was prepared by mixing rutin and chitosan solutions, followed by simple cross-linking reaction with glutaraldehyde at room temperature. The molecularly imprinted material was combined with Bi2S3/ZnIn2S4/ITO to construct photoelectrochemical sensor, and the resulting sensor showed a low detection limit (i.e. 0.003 μM) and a wide detection range (i.e. 0.01–100.0 μM) for rutin. It also displayed high stability and selectivity. The sensor could be used for the detection of rutin in real samples.
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