Comparative study of two different TiO2 film sensors on response to H2 under UV light and room temperature - Details

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Abstract：

An　anatase　TiO2　film　sensor　was　prepared　by　a　facile　in-situ　method　on　the　interdigitated　Au　electrode　deposited　on　the　alumina　substrate.　The　structure,　morphology　and　the　optical　properties　of　the　in-situ　TiO2　film　sensor　were　characterized　by　X-ray　diffraction,　Scanning　Electron　Microscopy,　and　UV-vis　diffuse　reflectance　spectra.　The　photo-assisted　gas　sensitivities　of　the　prepared　film　towards　H2　gas　were　evaluated　at　room　temperature　in　N2　and　synthetic　air　atmospheres.　As　compared　to　TiO2　film　sensor　prepared　by　drop-coating　method,　this　in-situ　TiO2　film　sensor　exhibited　a　more　compact　structure　composed　of　uniform　TiO2　microspheres　as　well　as　a　better　gas　sensitivity　towards　H2　under　UV　irradiation,　especially　in　synthetic　air.　The　photo-electrochemical　measurements　suggest　that　these　improvements　may　be　associated　with　the　efficient　charge　transfer　in　the　TiO2　interface　induced　by　the　TiO2microsphere　structure.　This　study　might　offer　a　feasible　approach　to　develop　photo-assisted　gas　sensors　at　ambient　temperature.　©　2016　by　the　authors;　licensee　MDPI,　Basel,　Switzerland.

Keyword：

Electron transfer; In-situ fabrication; Photo-electrochemical measurement; Photo-response; Semiconductor gas sensor

Community：

[ 1 ] [Peng, X.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, Fuzhou University, Fuzhou, 350002, China
[ 2 ] [Peng, X.]College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 3 ] [Wang, Z.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, Fuzhou University, Fuzhou, 350002, China
[ 4 ] [Wang, Z.]College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 5 ] [Huang, P.]College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 6 ] [Chen, X.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, Fuzhou University, Fuzhou, 350002, China
[ 7 ] [Chen, X.]College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 8 ] [Fu, X.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, Fuzhou University, Fuzhou, 350002, China
[ 9 ] [Fu, X.]College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 10 ] [Dai, W.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, Fuzhou University, Fuzhou, 350002, China
[ 11 ] [Dai, W.]College of Chemistry, Fuzhou University, Fuzhou, 350108, China

Reprint 's Address：

[Dai, W.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, Fuzhou UniversityChina

Email：

daiwenxin@fzu.edu.cn

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Source ：

Sensors (Switzerland)

ISSN： 1424-8220

Year： 2016

Issue： 8

Volume： 16

2 . 6 7 7

JCR@2016

3 . 0 3 1

JCR@2018

JCR Journal Grade：1

CAS Journal Grade：2

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 1

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