Highly sensitive ethanol sensor based on TiO2 nanoparticles and its photocatalyst activity

被引：43

作者：

Singh, Preeti ^{[1
]}

MAbdullah, M. ^{[2
]}

Sagadevan, Suresh ^{[3
]}

Kaur, Chanmeet ^{[1
]}

Ikram, Saiqa ^{[1
]}

机构：

[1] Jamia Millia Islamia, Dept Chem, Bio Polymers Res Lab, New Delhi 25, India

[2] Najran Univ, PCSED, Dept Phys, Coll Arts & Sci, POB 1988, Najran, Saudi Arabia

[3] Univ Malaya, Nanotechnol & Catalysis Res Ctr, Kuala Lumpur 50603, Malaysia

来源：

OPTIK | 2019年 / 182卷

关键词：

Photocatalytic process; Degradation; Brilliant cresyl blue; Titanium oxide; Irradiation; Ethanol sensing; NEGATIVE ABSORPTION; MICROSPHERES; DEGRADATION; DYE;

D O I：

10.1016/j.ijleo.2019.01.077

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Photo-catalytic decolorization or adsorption of an aqueous solution of 3 ppm of brilliant cresyl blue (BCB) in a suspension of 0.26 gm/100 ml of TiO2 metal oxide semiconductor as a catalyst, was achieved by using 200Watts UV lamp from an external source. The disappearance of the original colored dye concentration with irradiation time was monitored using UV-VIS Spectrophotometer. It was found that 74% of BCB dye was degraded after 120 min of irradiation time. In addition, the sensing properties of the TiO2 films were examined on behalf of numerous concentrations of ethanol in the liquid phase by a straightforward and dependable I-V procedure at normal room conditions. The sensitivity of the sensor was found to be (-)0.052 mAM(-1) cm(-2) for ethanol. Thus, the degradation rate and the subsequent chemical sensing properties of TiO(2)nanoarchitecture are of immense importance for the functions of TiO2 structure as a photocatalyst and chemical sensor.

引用

页码：512 / 518

页数：7

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