Laser-induced luminescence associated with surface hydroxide groups in Al2O3

Autor:	V. N. Snytnikov, V. O. Stoyanovskii
Rok vydání:	2009
Předmět:	Boehmite Chemistry General Chemistry Photochemistry Catalysis Computer Science Applications chemistry.chemical_compound Wavelength Modeling and Simulation Excited state Phase (matter) Hydroxide Nitrogen laser Luminescence Excitation
Zdroj:	Kinetics and Catalysis. 50:450-455
ISSN:	1608-3210 0023-1584
DOI:	10.1134/s0023158409030173
Popis:	Laser-induced luminescence of OHs groups for undoped Al2O3 oxides of various phase compositions was excited by pulsed nitrogen laser radiation at 337.1 nm. The luminescence band at 500–650 nm assigned to hydroxide groups of Al2O3, actually, consists of several lines at 500–515, 553, 567, 577, 607, and 633 nm; these constituent bands can be assigned to various types of OHs surface groups. In the low-temperature phases of the γ→δ→θ-Al2O3 series, excitation at a wavelength of 337.1 nm gave rise to a characteristic luminescence band associated with surface hydroxide groups of Al2O3 that appeared at 770 nm.
Databáze:	OpenAIRE
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