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引用本文:   陈全友, 谭学才, 杜方凯, 冯德芬, 罗燕妮, 艾晨昊, 吴叶宇, 严军. 基于CdS敏化Fe:TiO2纳米片的光电传感器对Cu2+的检测. 分析化学, 2018, 46(2): 232-238. doi:  10.11895/j.issn.0253-3820.171177 [复制]

Citation:   CHEN Quan-You, TAN Xue-Cai, DU Fang-Kai, FENG De-Fen, LUO Yan-Ni, AI Chen-Hao, WU Ye-Yu, YAN Jun. A Photoelecteochemical Sensor Based on CdS Sensitized Fe: TiO2 Nanosheets for Determination of Cu2+. Chinese Journal of Analytical Chemistry, 2018, 46(2): 232-238. doi: 10.11895/j.issn.0253-3820.171177 [复制]

基于CdS敏化Fe:TiO2纳米片的光电传感器对Cu2+的检测

通讯作者:  谭学才, gxunxctan@126.com

收稿日期: 2017-08-17

接受日期: 2017-12-05

出版日期: 2018-02-01

基金项目: 本文系国家自然科学基金项目(Nos.21365004,21065001)、广西自然科学基金重点项目(No.2013GXNSFDA019006)、广西高等学校高水平创新团队及卓越学者资助计划(No.桂教人[2014]7号)和广西民族大学研究生教育创新计划项目(No.gxun-chxps201684,gxun-chxzs2016125)资助

A Photoelecteochemical Sensor Based on CdS Sensitized Fe: TiO2 Nanosheets for Determination of Cu2+

Corresponding author:  TAN Xue-Cai, gxunxctan@126.com

Received Date:  2017-08-17

Accepted Date:  2017-12-05

Published Date:  2018-02-01

Fund Project:  This work was supported by the National Natural Science Foundation of China (Nos. 21365004, 21065001) and the Natural Science Foundation of Guangxi Province, China (No. 2013GXNSFDA019006).

以钛酸四丁酯(C16H36O4Ti)和三氟化铁(FeF3)为原料,用水热法制备了铁掺杂二氧化钛(TiO2)纳米片,并将其修饰ITO电极表面。通过连续离子吸附与反应(SILAR)法制备了ITO/Fe:TiO2/CdS光电传感器,并用于Cu2+的检测。Fe3+的掺杂使TiO2的带隙宽度变窄,对光的吸收产生红移,基于CdS的敏化效应,与TiO2结合后拓宽了可见光的吸收利用率,降低了电子-空穴的复合率,使光电信号显著增强。在0.2~4.0 μmol/L和4.0~80.0 μmol/L范围内,Cu2+浓度与传感器检测的电流值呈良好的线性关系,检出限为85 nmol/L(S/N=3)。将传感器分别用于桶装水、自来水、邕江水中Cu2+的测定,加标回收率为94%~111%。

关键词:   二氧化钛纳米片, 光电传感器, 铜离子, 光电信号
Key words:   Titanium dioxide nanosheets, Photoelectrochemical sensor, Copper ion, Photoelectric signal
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基于CdS敏化Fe:TiO2纳米片的光电传感器对Cu2+的检测

陈全友, 谭学才, 杜方凯, 冯德芬, 罗燕妮, 艾晨昊, 吴叶宇, 严军

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