Effect of CuO as a dopant in TiO2 on ammonia and hydrogen sulphide sensing at room temperature

被引：30

作者：

Chaudhari, Prapti ^{[1
]}

Mishra, Satyendra ^{[1
]}

机构：

[1] North Maharashtra Univ, Univ Inst Chem Technol, Jalgaon 425001, Maharashtra, India

来源：

MEASUREMENT | 2016年 / 90卷

关键词：

Semiconductors; Oxides; Sol-gel growth; Composite materials; X-ray diffraction; PHOTOCATALYTIC ACTIVITY; TITANIA NANOPARTICLES; FILMS; H2S; NANOWIRES; MECHANISM; SIZE; GAP;

D O I：

10.1016/j.measurement.2016.05.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The heterogeneous nanocomposites of CuO doped TiO2 nanoparticles were synthesized using sol gel method by varying the concentration of CuO as 0.1, 0.5 and 1 mol% for the sensing of ammonia and hydrogen sulphide. The substitutional doping of CuO in TiO2 matrix was confirmed by the X-ray diffraction. Average crystallite size of the doped nanocomposites was found to reduce with increase in concentration of CuO. The 0.1 mol% CuO doped TiO2 nanocomposites showed highest sensitivity to ammonia (97%) with response time of 2 s, while 1 mol% was selective to H2S gas (77%) with response time of 45 s for 50 ppm of each gas at room temperature. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：468 / 474

页数：7

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