Gas sensors based on carbon nanoflake/tin oxide composites for ammonia detection

被引：79

作者：

Lee, Soo-Keun ^{[2
]}

Chang, Daeic ^{[2
]}

Kim, Sang Wook ^{[1
]}

机构：

[1] Dongguk Univ Gyeongju, Coll Sci & Technol, Dept Adv Mat Chem, Gyeongju 780714, Gyeongbuk, South Korea

[2] DGIST, Nano & Bio Res Div, Taegu 711873, South Korea

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2014年 / 268卷

关键词：

Ammonia; Gas sensor; Composite material; Tin oxide; Carbon nano material; SENSING CHARACTERISTICS; TIN; STABILITY; FILMS;

D O I：

10.1016/j.jhazmat.2013.12.049

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Carbon nanoflake (CNFL) was obtained from graphite pencil by using the electrochemical method and the CNFL/SnO2 composite material assessed its potential as an ammonia gas sensor. A thin film resistive gas sensor using the composite material was manufactured by the drop casting method, and the sensor was evaluated to test in various ammonia concentrations and operating temperatures. Physical and chemical characteristics of the composite material were assessed using SEM, TEM, SAED, EDS and Raman spectroscopy. The composite material having 10% of SnO2 showed 3 times higher sensor response and better repeatability than the gas sensor using pristine SnO2 nano-particle at the optimal temperature of 350 degrees C. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：110 / 114

页数：5

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