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Fabrication of Cubic p-n Heterojunction-Like NiOIn2O3 Composite Microparticles and Their Enhanced Gas Sensing Characteristics
Joint Authors
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-12-21
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Oxide semiconductor In2O3 has been extensively used as a gas sensing material for the detection of various toxic gases.
However, the pure In2O3 sensor is always suffering from its low sensitivity.
In the present study, a dramatic enhancement of sensing characteristic of cubic In2O3 was achieved by deliberately fabricating p-n heterojunction-like NiO/In2O3 composite microparticles as sensor material.
The NiO-decorated In2O3 p-n heterojunction-like sensors were prepared through the hydrothermal transformation method.
The as-synthesized products were characterized using SEM-EDS, XRD, and FT-IR, and their gas sensing characteristics were investigated by detecting the gas response.
The experimental results showed that the response of the NiO/In2O3 sensors to 600 ppm methanal was 85.5 at 260°C, revealing a dramatic enhancement over the pure In2O3 cubes (21.1 at 260°C).
Further, a selective detection of methanol with inappreciable cross-response to other gases, like formaldehyde, benzene, methylbenzene, trichloromethane, ethanol, and ammonia, was achieved.
The cause for the enhanced gas response was discussed in detailed.
In view of the facile method of fabrication of such composite sensors and the superior gas response performance of samples, the cubic p-n heterojunction-like NiO/In2O3 sensors present to be a promising and viable strategy for the detection of indoor air pollution.
American Psychological Association (APA)
Xuemei, Hou& Yukun, Sun& Bo, Bai. 2016. Fabrication of Cubic p-n Heterojunction-Like NiOIn2O3 Composite Microparticles and Their Enhanced Gas Sensing Characteristics. Journal of Nanomaterials،Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1109370
Modern Language Association (MLA)
Xuemei, Hou…[et al.]. Fabrication of Cubic p-n Heterojunction-Like NiOIn2O3 Composite Microparticles and Their Enhanced Gas Sensing Characteristics. Journal of Nanomaterials No. 2016 (2016), pp.1-9.
https://search.emarefa.net/detail/BIM-1109370
American Medical Association (AMA)
Xuemei, Hou& Yukun, Sun& Bo, Bai. Fabrication of Cubic p-n Heterojunction-Like NiOIn2O3 Composite Microparticles and Their Enhanced Gas Sensing Characteristics. Journal of Nanomaterials. 2016. Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1109370
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1109370