Highly selective acetaldehyde sensor using sol–gel dip coated nano crystalline TiO2 thin film

被引：0

作者：

Karthika Muthukrishnan

Manoj Vanaraja

Shanmugam Boomadevi

Rakesh Kumar Karn

John Bosco Balaguru Rayappan

Vijay Singh

Krishnamoorthy Pandiyan

机构：

[1] SASTRA University,School of Electrical and Electronics Engineering

[2] National Institute of Technology,Department of Physics

[3] Konkuk University,Department of Chemical Engineering

[4] SASTRA University,Centre for Nonlinear Science and Engineering

来源：

Journal of Materials Science: Materials in Electronics | 2015年 / 26卷

关键词：

TiO2 Thin Film; Base Resistance; Titania Thin Film; Bright Field Transmission Electron Micrograph; Increase Chemical Reactivity;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Nano crystalline titania thin film was prepared by sol–gel dip coating method and its acetaldehyde gas sensing characteristics has been discussed. Sodium carboxymethyl cellulose was used as an additive in order to improve the adhesiveness of titania nanoparticles on a glass substrate. The dip coated film was annealed at 450 °C and characterized by XRD, FE-SEM and TEM. The result of XRD revealed that TiO2 exhibits crystalline anatase phase. Crystallite size of titania was estimated using Scherrer’s formula and it was found to be 31 nm. Spherical morphology of titania nano particles was observed using FE-SEM and TEM. The room temperature gas sensing characteristics of acetaldehyde was studied using chemiresistive method. Gas sensing parameters such as response, selectivity, lowest detection limit towards acetaldehyde were discussed in detail.

引用

页码：5135 / 5139

页数：4

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