CdS-Modified TiO(2) Nanotubes with Heterojunction Structure: A Photoelectrochemical Sensor for Glutathione.

CdS-Modified TiO(2) Nanotubes with Heterojunction Structure: A Photoelectrochemical Sensor for Glutathione.
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具有异质结结构的 CdS 修饰的 TiO2 纳米管:谷胱甘肽的光电化学传感器

DOI:
10.3390/nano13010013
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发表时间:
2022-12-20
期刊:
Nanomaterials (Basel, Switzerland)
影响因子:
--
通讯作者:
Zhu BL
Zhu BL
中科院分区:
其他
文献类型:
--
作者:
Huo GN;Zhang SS;Li YL;Li JX;Yue Z;Huang WP;Zhang SM;Zhu BL

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异质结结构的形成可以有效地防止半导体中光生电子-空穴对的复合,从而提高光电性能。以水热浸渍法制备的TiO2纳米管为载体,制备了cds -TiO2纳米管作为光电化学(PEC)传感器,由于其异质结结构的存在,可以在可见光下使用,并表现出良好的PEC性能。实验结果表明,制备的CdS-TiO2NTs电极对2-16 mM谷胱甘肽(GSH)具有良好的线性响应。该传感器的灵敏度为102.9µA·mM−1 cm−2,检出限为27.7µM。此外,该生物传感器具有良好的稳定性,表明这种异质结PEC生物传感器具有潜在的应用前景。
The formation of heterojunction structures can effectively prevent the recombination of photogenerated electron–hole pairs in semiconductors and result in the enhancement of photoelectric properties. Using TiO2 nanotubes (prepared using the hydrothermal-impregnation method) as carriers, CdS-TiO2NTs were fabricated as a photoelectrochemical (PEC) sensor, which can be used under visible light and can exhibit good PEC performance due to the existence of the heterojunction structure. The experimental results show that the prepared CdS-TiO2NTs electrode had a linear response to 2–16 mM glutathione (GSH). The sensor’s sensitivity and detection limit (LOD) were 102.9 µA·mM−1 cm−2 and 27.7 µM, respectively. Moreover, the biosensor had good stability, indicating the potential application of this kind of heterojunction PEC biosensor.
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