Oxygen dependence of NO adsorption on Hollandite-type KxGaxSn8–x O16 thin film

Oxygen dependence of NO adsorption on Hollandite-type KxGaxSn8–x O16 thin film Thin films of hollandite-type K1.9Ga1.9Sn6.1O16 (KGSO) were prepared by a spin-coating method. The films were colorless and transparent, 100-150 nm thick, and consisted of KGSO fine particles of about 20 nm in average size. The adsorption behavior of NO on the KGSO surface was examined by diffuse reflectance infrared fourier transform (DRIFTS). The KGSO was preheated at 968 K in a gas mixture of N2 and O2 prior to NO adsorption. As the oxygen ratio in the gas mixture increased up to 40%, absorption bands emerged and became stronger around 1400 cm-1. Those bands were assigned to NO2 species in chelating and nitrito form. It was found that the coexistence of oxygen remarkably improves the adsorption ability of NO on KGSO surface. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Oxygen dependence of NO adsorption on Hollandite-type KxGaxSn8–x O16 thin film

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Brill Academic Publishers
Copyright © 2002 by VSP 2002
Chemistry; Inorganic Chemistry; Physical Chemistry; Catalysis
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