Mesoporous tungsten oxide electrodes for YSZ-based mixed potential sensors to detect NO2 in the sub ppm-range

Xiaohong Zheng; Cheng Zhang; Jinfeng Xia; Guohong Zhou; Danyu Jiang; Shiwei Wang; Xin Li; Yibo Shen; Mengting Dai; Bing Wang; Qiang Li

doi:10.1016/j.snb.2019.01.016

Mesoporous tungsten oxide electrodes for YSZ-based mixed potential sensors to detect NO₂ in the sub ppm-range

Xiaohong Zheng
, Cheng Zhang
, Jinfeng Xia
, Guohong Zhou
, Danyu Jiang
, Shiwei Wang
, Xin Li
, Yibo Shen
, Mengting Dai
, Bing Wang
, Qiang Li^*

^*Corresponding author for this work

School of Chemistry and Molecular Engineering

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Mesoporous WO₃ with diameter of 7 nm and specific surface area of 209 m²/g was prepared by using SBA-15 as the hard template. Designed for ppb-level NO₂ detection in air, the as-obtained mesoporous WO₃ was employed as the sensing electrode to improve the sensitivity of a mixed-potential-type sensor based on yttria-stabilized zirconia electrolyte. This device showed high sensitivity to NO₂ over the concentration range of 0.06–10 ppm at 500 ℃ and the electric potential difference (ΔV) showed good linear correlation with the logarithm of the NO₂ concentration. The sensor exhibited high NO₂ selectivity, along with excellent repeatability and stability as well. The mixed-potential sensing mechanism was also discussed based on the polarization curves and electrochemical impedances.

Original language	English
Pages (from-to)	575-581
Number of pages	7
Journal	Sensors and Actuators B: Chemical
Volume	284
DOIs	https://doi.org/10.1016/j.snb.2019.01.016
State	Published - 1 Apr 2019

Keywords

Mesoporous WO
NOsensor
Yttria-stabilized zirconia
ppb level

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10.1016/j.snb.2019.01.016

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@article{4e48ced61f7f4c2ea45b40fbc857c8a3,

title = "Mesoporous tungsten oxide electrodes for YSZ-based mixed potential sensors to detect NO2 in the sub ppm-range",

abstract = "Mesoporous WO3 with diameter of 7 nm and specific surface area of 209 m2/g was prepared by using SBA-15 as the hard template. Designed for ppb-level NO2 detection in air, the as-obtained mesoporous WO3 was employed as the sensing electrode to improve the sensitivity of a mixed-potential-type sensor based on yttria-stabilized zirconia electrolyte. This device showed high sensitivity to NO2 over the concentration range of 0.06–10 ppm at 500 ℃ and the electric potential difference (ΔV) showed good linear correlation with the logarithm of the NO2 concentration. The sensor exhibited high NO2 selectivity, along with excellent repeatability and stability as well. The mixed-potential sensing mechanism was also discussed based on the polarization curves and electrochemical impedances.",

keywords = "Mesoporous WO, NOsensor, Yttria-stabilized zirconia, ppb level",

author = "Xiaohong Zheng and Cheng Zhang and Jinfeng Xia and Guohong Zhou and Danyu Jiang and Shiwei Wang and Xin Li and Yibo Shen and Mengting Dai and Bing Wang and Qiang Li",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = apr,

day = "1",

doi = "10.1016/j.snb.2019.01.016",

language = "英语",

volume = "284",

pages = "575--581",

journal = "Sensors and Actuators B: Chemical",

issn = "0925-4005",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Mesoporous tungsten oxide electrodes for YSZ-based mixed potential sensors to detect NO2 in the sub ppm-range

AU - Zheng, Xiaohong

AU - Zhang, Cheng

AU - Xia, Jinfeng

AU - Zhou, Guohong

AU - Jiang, Danyu

AU - Wang, Shiwei

AU - Li, Xin

AU - Shen, Yibo

AU - Dai, Mengting

AU - Wang, Bing

AU - Li, Qiang

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Mesoporous WO3 with diameter of 7 nm and specific surface area of 209 m2/g was prepared by using SBA-15 as the hard template. Designed for ppb-level NO2 detection in air, the as-obtained mesoporous WO3 was employed as the sensing electrode to improve the sensitivity of a mixed-potential-type sensor based on yttria-stabilized zirconia electrolyte. This device showed high sensitivity to NO2 over the concentration range of 0.06–10 ppm at 500 ℃ and the electric potential difference (ΔV) showed good linear correlation with the logarithm of the NO2 concentration. The sensor exhibited high NO2 selectivity, along with excellent repeatability and stability as well. The mixed-potential sensing mechanism was also discussed based on the polarization curves and electrochemical impedances.

AB - Mesoporous WO3 with diameter of 7 nm and specific surface area of 209 m2/g was prepared by using SBA-15 as the hard template. Designed for ppb-level NO2 detection in air, the as-obtained mesoporous WO3 was employed as the sensing electrode to improve the sensitivity of a mixed-potential-type sensor based on yttria-stabilized zirconia electrolyte. This device showed high sensitivity to NO2 over the concentration range of 0.06–10 ppm at 500 ℃ and the electric potential difference (ΔV) showed good linear correlation with the logarithm of the NO2 concentration. The sensor exhibited high NO2 selectivity, along with excellent repeatability and stability as well. The mixed-potential sensing mechanism was also discussed based on the polarization curves and electrochemical impedances.

KW - Mesoporous WO

KW - NOsensor

KW - Yttria-stabilized zirconia

KW - ppb level

UR - https://www.scopus.com/pages/publications/85059551779

U2 - 10.1016/j.snb.2019.01.016

DO - 10.1016/j.snb.2019.01.016

M3 - 文章

AN - SCOPUS:85059551779

SN - 0925-4005

VL - 284

SP - 575

EP - 581

JO - Sensors and Actuators B: Chemical

JF - Sensors and Actuators B: Chemical

ER -

Mesoporous tungsten oxide electrodes for YSZ-based mixed potential sensors to detect NO₂ in the sub ppm-range

Abstract

Keywords

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