A photoelectrochemical sensor for hydrogen sulfide in cancer cells based on the covalently and in situ grafting of CdS nanoparticles onto TiO2 nanotubes
A photoelectrochemical sensor for hydrogen sulfide in cancer cells based on the covalently and in situ grafting of CdS nanoparticles onto TiO2 nanotubes
复制标题
基于 CdS 纳米颗粒共价原位接枝到 TiO2 纳米管上的癌细胞中硫化氢的光电化学传感器
DOI：
10.1016/j.jelechem.2016.11.025
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发表时间：
2016-12-15
影响因子：
4.5
通讯作者：
Yu, Jinghua
中科院分区：
文献类型：
--
作者：
Ding, Longhua;Ma, Chao;Yu, Jinghua
研制了一种测定硫化氢（H2S）的光电化学传感器。通过将CdS纳米粒子共价原位接枝到TiO 2纳米管上产生光电流。利用巯基乙酸（TGA）对TiO 2纳米管表面进行修饰，引入巯基，使其对Cd离子具有吸附和包埋作用。用外源或内源H2S处理后，在TiO 2纳米管表面形成CdS纳米粒子。基于CdS纳米粒子的光电特性，可以检测外源性物质和癌细胞释放的H2S。线性范围为10 nM ~ 10（6）nM，检测限为0.7 nM。(C)© 2016 Elsevier B. V.版权所有。
A facile photoelectrochemical sensor for the determination of hydrogen sulfide (H2S) is developed. Photocurrent is generated through the grafting of CdS nanoparticles covalently and in situ onto TiO2 nanotubes. The surface of TiO2 nanotubes was modified by a layer of thioglycolic acid (TGA) to introduce thiol groups which can adsorb and immobilize Cd ions. CdS nanoparticles would be formed onto TiO2 nanotubes after treating with exogenous or endogenous H2S. Both the exogenous and H2S released from cancer cells were detected based on the photoelectric properties of CdS nanoparticles. And a wide linear range (10 nM-10(6) nM) was achieved with a detection limit of 0.7 nM. (C) 2016 Elsevier B.V. All rights reserved.