Multi-shelled copper oxide hollow spheres and their gas sensing properties
Article
Article Title | Multi-shelled copper oxide hollow spheres and their gas sensing properties |
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ERA Journal ID | 4969 |
Article Category | Article |
Authors | Xu, Jie (Author), Yao, Xiang (Author), Wei, Wangya (Author), Wang, Zumin (Author) and Yu, Ranbo (Author) |
Journal Title | Materials Research Bulletin |
Journal Citation | 87, pp. 214-218 |
Number of Pages | 5 |
Year | 2017 |
Place of Publication | United Kingdom |
ISSN | 0025-5408 |
1873-4227 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.materresbull.2016.12.004 |
Web Address (URL) | http://ac.els-cdn.com/S0025540816313952/1-s2.0-S0025540816313952-main.pdf?_tid=31bd16c6-61f8-11e7-b95a-00000aacb35f&acdnat=1499310607_b0a2b8ea36ddac77296558c3db491006 |
Abstract | In this work, multi-shelled copper oxide hollow composite microspheres with tunable shell number and composition were successfully synthesized by means of hard template method. The source for the carbonaceous microspheres templates affects the compositions of the final copper oxides spheres critically. When changing the sucrose to glucose, the composite hollow spheres of cupric oxide (CuO) and cuprous oxide (Cu2O) were synthesized instead of the pure CuO hollow spheres. The structure of products can be tuned from single-, double- to triple-shelled hollow spheres by precisely increasing the calcination rate. The pure CuO hollow-shell spheres had uniform diameters of about 900 nm and an average shell thickness of 45 nm. While the diameters and thicknesses of Cu2O/CuO composite hollow-shell spheres are 90–500 nm and 15–35 nm, respectively. Both of these two kinds of hollow-shell spheres showed much improved response to ethanol gas as gas sensors, the triple-shelled CuO/Cu2O hollow spheres exhibited the highest response at 140 °C, 1000 ppm. |
Keywords | A. Inorganic compounds; A. Nanostructures; A. Oxides; B. Chemical synthesis; C. Transmission electron microscopy; calcination rate; composite microspheres; cuprous oxide; gas sensing properties; hard templates; hollow shells; shell thickness; uniform diameter; structural members and shapes; copper; optical devices and systems; inorganic compounds; accidents and accident prevention |
ANZSRC Field of Research 2020 | 340399. Macromolecular and materials chemistry not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Science and Technology Beijing, China |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4252/multi-shelled-copper-oxide-hollow-spheres-and-their-gas-sensing-properties
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