Reduced graphene oxide/SnO2@Au heterostructure for enhanced ammonia gas sensing

Ruiqin Peng; Yuanyuan Li; Tong Liu; Qing Sun; Pengchao Si; Lin Zhang; Lijie Ci

doi:10.1016/j.cplett.2019.136829

Reduced graphene oxide/SnO₂@Au heterostructure for enhanced ammonia gas sensing

Ruiqin Peng
, Yuanyuan Li
, Tong Liu
, Qing Sun
, Pengchao Si
, Lin Zhang
, Lijie Ci^*

^*Corresponding author for this work

Jülich Research Centre
Shandong University
CAS - Suzhou Institute of Nano-Tech and Nano-Bionics

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

31 Scopus citations

Abstract

Metal oxide semiconductor gas sensors usually have poor response and recovery properties when operated at room temperature. Reduced graphene oxide (RGO)-based sensors suffer the same issues. Here, we demonstrate the suitability of a RGO/SnO₂@Au heterostructure for ammonia (NH₃) gas detection. This sensor, which is based on the composite structure, shows high gas sensing properties at room temperature (25 °C). The gas response of the sensor is up to 58% for the NH₃ gas concentration of 10 ppm. The response and recovery times are 20 s and 41 s, respectively, both of which are almost 10 times shorter than that of bare RGO or SnO₂ for NH₃ gas detection. The excellent sensing property is discussed here, and is ascribed to the synergistic effect of the Au@SnO₂ and the RGO/SnO₂ heterostructure. This work provides a reliable strategy for room temperature gas sensors.

Original language	English
Article number	136829
Journal	Chemical Physics Letters
Volume	737
DOIs	https://doi.org/10.1016/j.cplett.2019.136829
State	Published - 16 Dec 2019
Externally published	Yes

Keywords

Gas sensor
Heterointerface
Reduced graphene oxide
Synergistic effect

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10.1016/j.cplett.2019.136829

Cite this

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title = "Reduced graphene oxide/SnO2@Au heterostructure for enhanced ammonia gas sensing",

abstract = "Metal oxide semiconductor gas sensors usually have poor response and recovery properties when operated at room temperature. Reduced graphene oxide (RGO)-based sensors suffer the same issues. Here, we demonstrate the suitability of a RGO/SnO2@Au heterostructure for ammonia (NH3) gas detection. This sensor, which is based on the composite structure, shows high gas sensing properties at room temperature (25 °C). The gas response of the sensor is up to 58\% for the NH3 gas concentration of 10 ppm. The response and recovery times are 20 s and 41 s, respectively, both of which are almost 10 times shorter than that of bare RGO or SnO2 for NH3 gas detection. The excellent sensing property is discussed here, and is ascribed to the synergistic effect of the Au@SnO2 and the RGO/SnO2 heterostructure. This work provides a reliable strategy for room temperature gas sensors.",

keywords = "Gas sensor, Heterointerface, Reduced graphene oxide, Synergistic effect",

author = "Ruiqin Peng and Yuanyuan Li and Tong Liu and Qing Sun and Pengchao Si and Lin Zhang and Lijie Ci",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = dec,

day = "16",

doi = "10.1016/j.cplett.2019.136829",

language = "英语",

volume = "737",

journal = "Chemical Physics Letters",

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TY - JOUR

T1 - Reduced graphene oxide/SnO2@Au heterostructure for enhanced ammonia gas sensing

AU - Peng, Ruiqin

AU - Li, Yuanyuan

AU - Liu, Tong

AU - Sun, Qing

AU - Si, Pengchao

AU - Zhang, Lin

AU - Ci, Lijie

PY - 2019/12/16

Y1 - 2019/12/16

N2 - Metal oxide semiconductor gas sensors usually have poor response and recovery properties when operated at room temperature. Reduced graphene oxide (RGO)-based sensors suffer the same issues. Here, we demonstrate the suitability of a RGO/SnO2@Au heterostructure for ammonia (NH3) gas detection. This sensor, which is based on the composite structure, shows high gas sensing properties at room temperature (25 °C). The gas response of the sensor is up to 58% for the NH3 gas concentration of 10 ppm. The response and recovery times are 20 s and 41 s, respectively, both of which are almost 10 times shorter than that of bare RGO or SnO2 for NH3 gas detection. The excellent sensing property is discussed here, and is ascribed to the synergistic effect of the Au@SnO2 and the RGO/SnO2 heterostructure. This work provides a reliable strategy for room temperature gas sensors.

AB - Metal oxide semiconductor gas sensors usually have poor response and recovery properties when operated at room temperature. Reduced graphene oxide (RGO)-based sensors suffer the same issues. Here, we demonstrate the suitability of a RGO/SnO2@Au heterostructure for ammonia (NH3) gas detection. This sensor, which is based on the composite structure, shows high gas sensing properties at room temperature (25 °C). The gas response of the sensor is up to 58% for the NH3 gas concentration of 10 ppm. The response and recovery times are 20 s and 41 s, respectively, both of which are almost 10 times shorter than that of bare RGO or SnO2 for NH3 gas detection. The excellent sensing property is discussed here, and is ascribed to the synergistic effect of the Au@SnO2 and the RGO/SnO2 heterostructure. This work provides a reliable strategy for room temperature gas sensors.

KW - Gas sensor

KW - Heterointerface

KW - Reduced graphene oxide

KW - Synergistic effect

UR - https://www.scopus.com/pages/publications/85073072214

U2 - 10.1016/j.cplett.2019.136829

DO - 10.1016/j.cplett.2019.136829

M3 - 文章

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SN - 0009-2614

VL - 737

JO - Chemical Physics Letters

JF - Chemical Physics Letters

M1 - 136829

ER -

Reduced graphene oxide/SnO₂@Au heterostructure for enhanced ammonia gas sensing

Abstract

Keywords

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