NO2 detection and redox capacitance reaction of Ag doped SnO2/rGO aerogel at room temperature

Wenqian Yan; Kunmeng Zhu; Yi Cui; Yanhan Li; Tao Dai; Sheng Cui; Xiaodong Shen

doi:10.1016/j.jallcom.2021.161287

NO₂ detection and redox capacitance reaction of Ag doped SnO₂/rGO aerogel at room temperature

Wenqian Yan, Kunmeng Zhu, Yi Cui, Yanhan Li, Tao Dai, Sheng Cui, Xiaodong Shen

College of Materials Science and Engineering

Nanjing Tech University

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

21 Scopus citations

Abstract

A new material of Ag-SnO₂/rGO aerogel is fabricated by the sol-gel method and freeze-drying technique. The SnO₂ particles are tightly arranged on the rGO sheets to form a p-n heterojunction, and the rGO aerogel possesses abundant pore structures for effective adsorption. Besides, the Ag particles are dispersed on the surface as a catalyst to improve the internal electron mobility, further promoting the gas-sensing performance. To be noted, the Ag-SnO₂/rGO aerogel can exhibit a response of 2.13 towards 50 ppm NO₂ at RT instead of heating conditions, and shows a cyclic capacitance property of redox. Moreover, the non-linear growth between gas concentration and response is observed, which proves the chemical adsorption that results in the high selectivity.

Original language	English
Article number	161287
Journal	Journal of Alloys and Compounds
Volume	886
DOIs	https://doi.org/10.1016/j.jallcom.2021.161287
State	Published - 15 Dec 2021

Keywords

Aerogel
Ag catalytic
Capacitance
Gas sensitivity
P-n heterojunction

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10.1016/j.jallcom.2021.161287

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title = "NO2 detection and redox capacitance reaction of Ag doped SnO2/rGO aerogel at room temperature",

abstract = "A new material of Ag-SnO2/rGO aerogel is fabricated by the sol-gel method and freeze-drying technique. The SnO2 particles are tightly arranged on the rGO sheets to form a p-n heterojunction, and the rGO aerogel possesses abundant pore structures for effective adsorption. Besides, the Ag particles are dispersed on the surface as a catalyst to improve the internal electron mobility, further promoting the gas-sensing performance. To be noted, the Ag-SnO2/rGO aerogel can exhibit a response of 2.13 towards 50 ppm NO2 at RT instead of heating conditions, and shows a cyclic capacitance property of redox. Moreover, the non-linear growth between gas concentration and response is observed, which proves the chemical adsorption that results in the high selectivity.",

keywords = "Aerogel, Ag catalytic, Capacitance, Gas sensitivity, P-n heterojunction",

author = "Wenqian Yan and Kunmeng Zhu and Yi Cui and Yanhan Li and Tao Dai and Sheng Cui and Xiaodong Shen",

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year = "2021",

month = dec,

day = "15",

doi = "10.1016/j.jallcom.2021.161287",

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TY - JOUR

T1 - NO2 detection and redox capacitance reaction of Ag doped SnO2/rGO aerogel at room temperature

AU - Yan, Wenqian

AU - Zhu, Kunmeng

AU - Cui, Yi

AU - Li, Yanhan

AU - Dai, Tao

AU - Cui, Sheng

AU - Shen, Xiaodong

PY - 2021/12/15

Y1 - 2021/12/15

N2 - A new material of Ag-SnO2/rGO aerogel is fabricated by the sol-gel method and freeze-drying technique. The SnO2 particles are tightly arranged on the rGO sheets to form a p-n heterojunction, and the rGO aerogel possesses abundant pore structures for effective adsorption. Besides, the Ag particles are dispersed on the surface as a catalyst to improve the internal electron mobility, further promoting the gas-sensing performance. To be noted, the Ag-SnO2/rGO aerogel can exhibit a response of 2.13 towards 50 ppm NO2 at RT instead of heating conditions, and shows a cyclic capacitance property of redox. Moreover, the non-linear growth between gas concentration and response is observed, which proves the chemical adsorption that results in the high selectivity.

AB - A new material of Ag-SnO2/rGO aerogel is fabricated by the sol-gel method and freeze-drying technique. The SnO2 particles are tightly arranged on the rGO sheets to form a p-n heterojunction, and the rGO aerogel possesses abundant pore structures for effective adsorption. Besides, the Ag particles are dispersed on the surface as a catalyst to improve the internal electron mobility, further promoting the gas-sensing performance. To be noted, the Ag-SnO2/rGO aerogel can exhibit a response of 2.13 towards 50 ppm NO2 at RT instead of heating conditions, and shows a cyclic capacitance property of redox. Moreover, the non-linear growth between gas concentration and response is observed, which proves the chemical adsorption that results in the high selectivity.

KW - Aerogel

KW - Ag catalytic

KW - Capacitance

KW - Gas sensitivity

KW - P-n heterojunction

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U2 - 10.1016/j.jallcom.2021.161287

DO - 10.1016/j.jallcom.2021.161287

M3 - 文章

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SN - 0925-8388

VL - 886

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 161287

ER -

NO₂ detection and redox capacitance reaction of Ag doped SnO₂/rGO aerogel at room temperature

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Keywords

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