Physico-chemical properties of WO3-Co3O4 composition prepared by the sol-gel method
Abstract
Tungsten oxide WO3, cobalt oxide Co3O4 and their compositions prepared by the sol-gel method, have been characterized by X-ray diffraction (XRD), IR-spectroscopy, scanning electron microscopy (SEM), thermogravimetric and differential thermal analysis (TG-DTA). The formation of heterogeneous material consisting mainly of CoWO4 in the process of joint annealing of oxides has been established. It has been observed that the mixed composition is much more sensitive to nitrogen dioxide (2 ppm) than the starting material, WO3.
About the Authors
Y. S. Haiduk
Белорусский государственный университет
Belarus
Belarus
V. A. Lomonosov
Белорусский государственный университет
Belarus
Belarus
A. A. Savitsky
Белорусский государственный университет
Belarus
Belarus
References
1. Pullar R. C. еt al. // J. of the European Ceramic Society. 2007. Vol. 27, is. 2-3. Р. 1059-1063.
2. Shao Gang-qin, Guo Jing-kun, XIe Ji-ren, Duan Xing-long, Wu Bo-lin, Yuan Run-zhang // J. of Wuhan University of Technology. Mater. Sci. 2004. Vol. 19, N 2. Р. 1-3.
3. Xu Chun Song еt al. // J. of Nanoparticle Research. 2008. Vol. 10, is. 4. P. 709-713.
4. Kwon-ll Ch. еt al. // C2H5OH sensing characteristics of various Co3O4 nanostructures prepared by solvotermal reaction. Sensors and Actuators B: Chemical. 2010. Vol. 146. P. 183-189.
5. Tetsuya Kida et al. // Sensors and Actuators B. 2009. Vol. 135. P. 568-574.
6. Иверонова В. И., Ревкевич Г. П. Теория рассеяния рентгеновских лучей. М., 1972.
7. Patent US 7591984 B2. Preparation of tungsten oxide. J. Christopher et al.
8. Nogueira H. et al. // Materials Research Bulletin. 2004. Vol. 39. P. 683-693.
9. Клячко-Гурвич А. л. // Изв. АН СССР. Сер. хим. 1961. № 10. С. 1884-1886.
10. Cенсор диоксида азота. Заявка на изобретение Республики Беларусь № а20140371 от 08.07.2014. Ю. С. Гайдук, И. А. Таратын.
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