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Sensors 2002, 2(3), 71-78; doi:10.3390/s20300071
Article

The Preparation of ZnGa2O4 Nano Crystals by Spray Coprecipitation and Its Gas Sensitive Characteristics

1,* , 1, 2, 1 and 1
1 Hefei Institute of Intelligent Machines, Chinese Academy of Science, Hefei 230031, P.R. China 2 Department of Automation, University of Science and Technology of China, Hefei 230026, P.R. China
* Author to whom correspondence should be addressed.
Received: 3 February 2002 / Accepted: 22 February 2002 / Published: 12 March 2002
(This article belongs to the Special Issue Nano-Porous Sensor Material)
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Abstract

ZnGa2O4 nano crystals were prepared by an improved coprecipitation method, which we call ‘spray coprecipitation’. XRD results shows the resulting crystal size using the new method is under 10nm, whereas the powder prepared by ordinary coprecipitation is about 30nm. XRD results also shows ZnO peaks exists in ZnGa2O4 powder prepared by traditional coprecipitation, but disappears in ZnGa2O4 nano crystal prepared by spraying coprecipitation. SEM and TEM were used to analysis the structural characteristics of ZnGa2O4 nano crystals. The gas sensitive characteristics of ZnGa2O4 nano crystals are reported.
Keywords: Coprecipitation; Nano crystals; Spray; Gas sensitive Coprecipitation; Nano crystals; Spray; Gas sensitive
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Jiao, Z.; Ye, G.; Chen, F.; Li, M.; Liu, J. The Preparation of ZnGa2O4 Nano Crystals by Spray Coprecipitation and Its Gas Sensitive Characteristics. Sensors 2002, 2, 71-78.

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