Nano-TiO2/dihexadecylphosphate based electrochemical sensor for sensitive determination of pentachlorophenol

被引：46
作者：
Wu, Yunhua [1 ]
机构：
[1] S Cent Univ Nationalities, Coll Life Sci, Key Lab Biotechnol Natl Commiss Nationalities, Wuhan 430074, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2009年 / 137卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Pentachlorophenol; Electrochemical determination; Nano-TiO2; Environment analysis; VOLTAMMETRIC DETERMINATION; AQUEOUS-SOLUTION; ELECTRODE; WOOD; DEGRADATION; FILMS; WATER; SOIL; PCP;
D O I：
10.1016/j.snb.2008.11.005
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An electrochemical sensor for sensitive and convenient determination of pentachlorophenol (PCP) was developed based on the nano-TiO2-dihexadecylphosphate (DHP) film thin film-modified electrode. Owing to the unique properties of nano-TiO2 such as huge surface area, strong adsorptive ability, subtle electronic properties and catalytic ability, the electrochemical oxidation signal of PCP significantly increases at the nano-TiO2/DHP-based electrochemical sensor, suggesting that nano-TiO2 film exhibits obvious enhancement effect to the determination of PCP. Based on this, a sensitive and convenient electrochemical method was developed for the determination of PCR The linear range is over the range from 5.0 x 10(-8) mol L-1 to 7.5 x 10(-6) mol L-1 and from 1.5 x 10(-6) mol L-1 to 1.0 x 10(-4) mol L-1 with a limit of detection of 1 x 10(-1) mol L-1. Finally, this sensor was successfully employed to detect PCP in water samples. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：180 / 184
页数：5
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