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

被引：15

作者：

Muthukrishnan, Karthika ^{[1
]}

Vanaraja, Manoj ^{[1
]}

Boomadevi, Shanmugam ^{[2
]}

Karn, Rakesh Kumar ^{[1
]}

Rayappan, John Bosco Balaguru ^{[1
]}

Singh, Vijay ^{[3
]}

Pandiyan, Krishnamoorthy ^{[1
,4
]}

机构：

[1] SASTRA Univ, Sch Elect & Elect Engn, Thanjavur 613401, Tamil Nadu, India

[2] Natl Inst Technol, Dept Phys, Tiruchirappalli 620015, Tamil Nadu, India

[3] Konkuk Univ, Dept Chem Engn, Seoul 143701, South Korea

[4] SASTRA Univ, Ctr Nonlinear Sci & Engn, Thanjavur 613401, Tamil Nadu, India

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2015年 / 26卷 / 07期

关键词：

GAS SENSOR; CARBOXYMETHYL CELLULOSE; PHOTOCATALYTIC ACTIVITY; SENSING PROPERTIES; FAST-RESPONSE; ZNO; TEMPERATURE; TICL4; OXIDE; ETHANOL;

D O I：

10.1007/s10854-015-3041-0

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

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 degrees 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 FESEM 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：5

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