Indexed by:
期刊论文
First Author:
Li, Xiaogan
Correspondence Author:
Li, XG (reprint author), Dalian Univ Technol, Sch Elect Sci & Technol, Inst Sensing Technol, Key Lab Liaoning Integrated Circuits Technol, Dalian 116024, Peoples R China.
Co-author:
Chen, Ning,Lin, Shiwen,Wang, Jing,Zhang, Jianwei
Date of Publication:
2015-03-31
Journal:
SENSORS AND ACTUATORS B-CHEMICAL
Included Journals:
SCIE、EI、Scopus
Document Type:
J
Volume:
209
Page Number:
729-734
ISSN No.:
0925-4005
Key Words:
Mesoporous TiO2 microspheres; NiO-wrapped TiO2; Ammonia; VOCs; Gas
sensors
Abstract:
Pure mesoporous TiO2 microspheres based chemoresistive gas sensors showed response to several organic volatile compounds (VOCs) such as formaldehyde, methanol, ethanol, ammonia and acetone under the UV illumination in the humid air at room temperature. With the loading of NiO at the porous surface of TiO2 microspheres, the sensor indicated a different sensing property. The sensor using 10 wt% NiO-wrapped mesoporous TiO2 composite microspheres showed a good sensitivity to different concentrations of ammonia from 10 ppm to 100 ppm whereas almost no response to other VOCs indicating an excellent selectivity to detect ammonia in the humid air with UV illumination at room temperature. (C) 2014 Elsevier B.V. All rights reserved.
Translation or Not:
no
