NDLI: Study on gas sensing properties and mechanism of Ag-doped SnO2 gas sensor to H2

Content Provider	IEEE Xplore Digital Library
Author	Lingfeng Jin Weigen Chen Shangyi Peng Qu Zhou
Copyright Year	2015
Description	Author affiliation: State Key Lab. of Power Transm. Equip. & Syst. Security & New Technol., Chongqing Univ., Chongqing, China (Lingfeng Jin; Weigen Chen; Shangyi Peng) \|\| Coll. of Eng. & Technol., Southwest Univ., Chongqing, China (Qu Zhou)
Abstract	$H_{2}$ is one of the main fault characteristic gases dissolved in transformer oil, which can indicate the electric faults, such as high energy discharge, spark discharge and partial discharge, and partial oil overheating phenomenon. Detection the content of $H_{2}$ has an important significance for transformer diagnosis and state assessment. Gas sensing detection technology is the core of online monitoring device. In this paper, for the detection of dissolved $H_{2},$ based on the density functional theory and the first-principles, pure and Ag-doped $SnO_{2}$ models and gas adsorption models were built, and theoretical calculations were conducted. Meanwhile, pure and Ag-doped $SnO_{2}$ gas sensing materials were synthesized with hydrothermal method. Then $SnO_{2}$ based gas sensors were fabricated and their gas sensing properties were measured. Finally, its gas sensing mechanism was discussed based on the macro gas sensing properties and micro simulating calculations. The results indicated that, Ag doping can improve the gas sensing properties of $SnO_{2}$ nanostructures to $H_{2},$ Ag doping sensor has better effect than pure sensor for $H_{2}$ detection, such as a lower optimum operating temperature of 340 °C, lower detection limit of 10 μL/L with higher sensitivity. The role of the dopant of Ag into the $SnO_{2}$ and the sensing mechanism had also been discussed in this work. The experimental results verifies the feasibility and accuracy of study the gas sensing performances of $SnO_{2}$ based gas sensors using the first-principles calculation based on the density functional theory, further perfecting its gas sensing mechanism of $SnO_{2}$ based gas sensor and providing us a fresh idea and feasible way to develop different kinds dopant of metal or metal-oxide gas sensors with high performances.
Starting Page	407
Ending Page	410
File Size	887087
Page Count	4
File Format	PDF
ISBN	9781479973521
e-ISBN	9781479973545
DOI	10.1109/ICACACT.2014.7223607
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Monitoring X-ray scattering Heating Temperature sensors Surface waves Mechanical factors detection characteristic transformer oil dissolved gas gas sensor Ag-doped SnO2 sensing mechanism
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in