Fast microwave-assisted synthesis of gas-sensing SnO2 quantum dots with high sensitivity

Lianfeng Zhu; Mengyun Wang; Tsz Kwan Lam; Changyue Zhang; Hongda Du; Baohua Li; Youwei Yao

doi:10.1016/j.snb.2016.04.173

Fast microwave-assisted synthesis of gas-sensing SnO₂ quantum dots with high sensitivity

Lianfeng Zhu, Mengyun Wang, Tsz Kwan Lam, Changyue Zhang, Hongda Du, Baohua Li, Youwei Yao

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

39 Citations (Scopus)

Abstract

Tin oxide (SnO₂) quantum dots (QDs) have been prepared by microwave-assisted method. Firstly, through microwave-assisted method, organic component-wrapped SnO₂ QDs with size of ca. 2-4 nm can be synthesized in only 0.5 min at 160 °C. Then, SnO₂ of very good crystallinity and ca. 5-10 nm can be obtained by annealing the organic component-wrapped SnO₂ QDs in air at 400 °C for 4 h. The annealed SnO₂ QDs exhibit excellent gas sensitivity towards ethanol vapor. Typically, the relative resistance, i.e., ratio of resistance of sample in air to that in tested gases, of sensors towards 300 ppm of ethanol vapor is 215.

Original language	English
Pages (from-to)	646-653
Number of pages	8
Journal	Sensors and Actuators, B: Chemical
Volume	236
DOIs	https://doi.org/10.1016/j.snb.2016.04.173
Publication status	Published - 2016 Nov 29
Externally published	Yes

Keywords

Gas sensor
Microwave
Oleic acid
Oleylamine
Quantum dots
Tin oxide

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1016/j.snb.2016.04.173

Cite this

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title = "Fast microwave-assisted synthesis of gas-sensing SnO2 quantum dots with high sensitivity",

abstract = "Tin oxide (SnO2) quantum dots (QDs) have been prepared by microwave-assisted method. Firstly, through microwave-assisted method, organic component-wrapped SnO2 QDs with size of ca. 2-4 nm can be synthesized in only 0.5 min at 160 °C. Then, SnO2 of very good crystallinity and ca. 5-10 nm can be obtained by annealing the organic component-wrapped SnO2 QDs in air at 400 °C for 4 h. The annealed SnO2 QDs exhibit excellent gas sensitivity towards ethanol vapor. Typically, the relative resistance, i.e., ratio of resistance of sample in air to that in tested gases, of sensors towards 300 ppm of ethanol vapor is 215.",

keywords = "Gas sensor, Microwave, Oleic acid, Oleylamine, Quantum dots, Tin oxide",

author = "Lianfeng Zhu and Mengyun Wang and {Kwan Lam}, Tsz and Changyue Zhang and Hongda Du and Baohua Li and Youwei Yao",

note = "Funding Information: This work was financially supported by Special Strategic Funds for Development of Emerging Industry of Shenzhen (No. JCYJ20120616220509842 ) and fundamental research Project of Shenzhen ( JCYJ 20140902110354246 ). Publisher Copyright: {\textcopyright} 2016 Published by Elsevier B.V.",

year = "2016",

month = nov,

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doi = "10.1016/j.snb.2016.04.173",

language = "English",

volume = "236",

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journal = "Sensors and Actuators B: Chemical",

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T1 - Fast microwave-assisted synthesis of gas-sensing SnO2 quantum dots with high sensitivity

AU - Zhu, Lianfeng

AU - Wang, Mengyun

AU - Kwan Lam, Tsz

AU - Zhang, Changyue

AU - Du, Hongda

AU - Li, Baohua

AU - Yao, Youwei

N1 - Funding Information: This work was financially supported by Special Strategic Funds for Development of Emerging Industry of Shenzhen (No. JCYJ20120616220509842 ) and fundamental research Project of Shenzhen ( JCYJ 20140902110354246 ). Publisher Copyright: © 2016 Published by Elsevier B.V.

PY - 2016/11/29

Y1 - 2016/11/29

N2 - Tin oxide (SnO2) quantum dots (QDs) have been prepared by microwave-assisted method. Firstly, through microwave-assisted method, organic component-wrapped SnO2 QDs with size of ca. 2-4 nm can be synthesized in only 0.5 min at 160 °C. Then, SnO2 of very good crystallinity and ca. 5-10 nm can be obtained by annealing the organic component-wrapped SnO2 QDs in air at 400 °C for 4 h. The annealed SnO2 QDs exhibit excellent gas sensitivity towards ethanol vapor. Typically, the relative resistance, i.e., ratio of resistance of sample in air to that in tested gases, of sensors towards 300 ppm of ethanol vapor is 215.

AB - Tin oxide (SnO2) quantum dots (QDs) have been prepared by microwave-assisted method. Firstly, through microwave-assisted method, organic component-wrapped SnO2 QDs with size of ca. 2-4 nm can be synthesized in only 0.5 min at 160 °C. Then, SnO2 of very good crystallinity and ca. 5-10 nm can be obtained by annealing the organic component-wrapped SnO2 QDs in air at 400 °C for 4 h. The annealed SnO2 QDs exhibit excellent gas sensitivity towards ethanol vapor. Typically, the relative resistance, i.e., ratio of resistance of sample in air to that in tested gases, of sensors towards 300 ppm of ethanol vapor is 215.

KW - Gas sensor

KW - Microwave

KW - Oleic acid

KW - Oleylamine

KW - Quantum dots

KW - Tin oxide

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