Abstract
Tungsten oxide doped by a complex of platinum exhibits a gasochromic effect. A reversible coloration is observed on successive exposure to hydrogen and air. The films were prepared by the sol-gel method at room temperature. They showed strong darkening (blue color) on exposure to hydrogen and were bleached completely when exposed to air. The proccess has been reproduced completely hundreds of times without any losses. The cycling of the coloration was obtained from UV-Vis spectra and the mechanism deduced from both visible and Fourier transform infrared (FTIR) spectra. Colorimetric properties of the gasochromic films were expressed in color space chromaticity diagram.
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References
S. Khoobiar, J. Phys. Chem. 68, 411 (1964).
H.W. Kohn and M. Boudart, Science 145, 149 (1964).
J.E. Benson, H.W. Kohn, and M. Boudart, J. Catal. 5, 307 (1966).
M. Boudart, M.A. Vannice, and J.E. Benson, Z. Physik. Chem. Neue. Folge. 64, 171 (1969).
B.S. Hobbs and A.C.C. Tseung, J. Electrochem. Soc. 119(5), 583 (1972).
G. Adachi, H. Sakaguchi, T. Shimogohri, and J. Shiokawa, J. Less Comm. Met. 116, L13 (1986).
H. Shirai, H. Sakaguchi, and G. Adachi, J. Less Comm. Met. 159, L17 (1990).
K. Ito and T. Kubo, Proceedings of the 4th Sensor Symposium (JIEE, Tokio, 1984), p. 153.
K. Ito and T. Ohgami, Appl. Phys. Lett. 60(8), 938 (1992).
Reisfeld and Jorgensen, Chemistry, spectroscopy and applications of sol-gel glasses, Structure and Bonding 77, (1992) (Springer-Verlag, Berlin Heidelberg, New York); Optical and electronic phenomena in sol-gel glasses and modern applications, Structure and Bonding 85, (1996) (Springer-Verlag, Berlin Heidelberg, New York).
M.F. Daniel, B. Desbat, J.C. Lassegues, and R. Garie, J. Solid State Chem. 73, 127 (1988).
P. Delichere, P. Falaras, M. Frommet, and A. Hugot-le Goff, B. Agiues, Thin Solid Films 16, 35 (1988).
T. Shimomura, T. Furuta, and T. Maki, Jpn. J. Appl. Phys. 26, L229 (1987).
T. Furuta, T. Shimomura, H. Mada, and S. Kobayashi, Jpn. J. Appl. Phys. 20, L768 (1981).
F.W. Billmeyer and M. Saltman, Principles of Color Technology (John Wiley, New York, 1981), p. 47.
B. Orel, U. Lavrencic-Stangar, M.G. Hutchins, and K. Kalcher, J. Non-Cryst. Solids 175, 251 (1994).
T. Namba, Y. Nishiyama, and I. Yasui, J. Mater. Res. 6, 1324 (1991).
M.F. Daniel, B. Desbat, J.C. Lassegues, B. Gerard, and M. Figlarz, J. Solid State Chem. 67, 235 (1987).
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Zayat, M., Reisfeld, R., Minti, H. et al. Gasochromic Effect in Platinum-Doped Tungsten Trioxide Films Prepared by the Sol-Gel Method. Journal of Sol-Gel Science and Technology 11, 161–168 (1998). https://doi.org/10.1023/A:1008645530803
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DOI: https://doi.org/10.1023/A:1008645530803