Enhanced acetone gas sensing performance of the multiple-networked Fe2O3-functionalized In2O3 nanowire sensor

被引：36
作者：
Kim, Soohyun [1 ]
Park, Sunghoon [1 ]
Sun, Gun-Joo [1 ]
Hyun, Soong Keun [1 ]
Kim, Kyoung-Kook [2 ]
Lee, Chongmu [1 ]
机构：
[1] Inha Univ, Dept Mat Sci & Engn, Inchon 402751, South Korea
[2] Korea Polytech Univ, Dept Nanoopt Engn, Shiheung City 429793, Gyeonggi Do, South Korea
来源：
CURRENT APPLIED PHYSICS | 2015年 / 15卷 / 08期
基金：
新加坡国家研究基金会;
关键词：
In2O3; nanowires; Fe2O3; Functionalization; Gas sensors; Acetone; FIELD-EMISSION; THIN-FILMS; CO; PD; NANOCOMPOSITES; NANOFLAKES; MODEL;
D O I：
10.1016/j.cap.2015.05.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In2O3 nanowires functionalized with Fe2O3 nanoparticles were synthesized by the thermal evaporation of In2S3 powders in an oxidizing atmosphere followed by the solvothermal deposition of Fe2O3 and their acetone gas sensing properties were examined. The pristine and Fe2O3-functionalized In2O3 nanowires exhibited responses of 141-390% and 298-960%, respectively, to 10-500 ppm acetone at 200 degrees C. The Fe2O3-functionalized In2O3 nanowire sensor showed stronger electrical response to acetone gas at 200 degrees C than the pristine In2O3 nanowire counterpart. The former showed more rapid response but slower recovery than the latter. Both the pristine and Fe2O3-functionalized In2O3 nanowire sensors showed the strongest response to acetone gas at 200 degrees C. The underlying mechanism for the enhanced sensing performance of the Fe2O3-functionalized In2O3 nanowire sensor towards acetone gas is discussed. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：947 / 952
页数：6
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