The self-assembly of octahedral CuxO and its triethylamine-sensing properties

Wangchang Geng; Zhiyan Ma; Yejun Zhao; Xiaowei He; Libing Duan; Jinchun Tu; Qiuyu Zhang

doi:10.1016/j.snb.2020.128014

The self-assembly of octahedral Cu_xO and its triethylamine-sensing properties

Wangchang Geng, Zhiyan Ma, Yejun Zhao, Xiaowei He, Libing Duan, Jinchun Tu, Qiuyu Zhang

School of Chemistry and Chemical Engineering

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

29 Scopus citations

Abstract

Cu₂O with series adjustable octahedral morphologies was prepared via a simple, fast, and template-free method. X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy are used to characterize the structure and morphology. The evolution and formation mechanism of these morphologies is discussed in detail. An assembly mode of this morphology is proposed. The hollow octahedral CuO was obtained after the heat-treatment of the octahedral Cu₂O. Analysis of gas sensing properties revealed that hollow octahedral CuO shows a high response to triethylamine with a low detection limit (10 ppm), good selectivity, and long-term stability. Finally, the gas sensing mechanism is also proposed.

Original language	English
Article number	128014
Journal	Sensors and Actuators, B: Chemical
Volume	312
DOIs	https://doi.org/10.1016/j.snb.2020.128014
State	Published - 1 Jun 2020

Keywords

CuO
CuO
Gas sensing
Morphology control
Octahedral
VOCs

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10.1016/j.snb.2020.128014

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title = "The self-assembly of octahedral CuxO and its triethylamine-sensing properties",

abstract = "Cu2O with series adjustable octahedral morphologies was prepared via a simple, fast, and template-free method. X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy are used to characterize the structure and morphology. The evolution and formation mechanism of these morphologies is discussed in detail. An assembly mode of this morphology is proposed. The hollow octahedral CuO was obtained after the heat-treatment of the octahedral Cu2O. Analysis of gas sensing properties revealed that hollow octahedral CuO shows a high response to triethylamine with a low detection limit (10 ppm), good selectivity, and long-term stability. Finally, the gas sensing mechanism is also proposed.",

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T1 - The self-assembly of octahedral CuxO and its triethylamine-sensing properties

AU - Geng, Wangchang

AU - Ma, Zhiyan

AU - Zhao, Yejun

AU - He, Xiaowei

AU - Duan, Libing

AU - Tu, Jinchun

AU - Zhang, Qiuyu

PY - 2020/6/1

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N2 - Cu2O with series adjustable octahedral morphologies was prepared via a simple, fast, and template-free method. X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy are used to characterize the structure and morphology. The evolution and formation mechanism of these morphologies is discussed in detail. An assembly mode of this morphology is proposed. The hollow octahedral CuO was obtained after the heat-treatment of the octahedral Cu2O. Analysis of gas sensing properties revealed that hollow octahedral CuO shows a high response to triethylamine with a low detection limit (10 ppm), good selectivity, and long-term stability. Finally, the gas sensing mechanism is also proposed.

AB - Cu2O with series adjustable octahedral morphologies was prepared via a simple, fast, and template-free method. X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy are used to characterize the structure and morphology. The evolution and formation mechanism of these morphologies is discussed in detail. An assembly mode of this morphology is proposed. The hollow octahedral CuO was obtained after the heat-treatment of the octahedral Cu2O. Analysis of gas sensing properties revealed that hollow octahedral CuO shows a high response to triethylamine with a low detection limit (10 ppm), good selectivity, and long-term stability. Finally, the gas sensing mechanism is also proposed.

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KW - Morphology control

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KW - VOCs

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The self-assembly of octahedral Cu_xO and its triethylamine-sensing properties

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Keywords

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