Open AccessОпределение коэффициента экстинкции моноксида углерода, адсорбированного на диоксиде титана
Author(s) -
Кирилл Михайлович Буланин,
Алёна Юрьевна Михелева,
Дмитрий Николаевич Щепкин,
Аида Витальевна Рудакова
Publication year - 2021
Publication title -
optika i spektroskopiâ
Language(s) - English
Resource type - Journals
eISSN - 2782-6694
pISSN - 0030-4034
DOI - 10.21883/os.2021.11.51639.2511-21
Subject(s) - adsorption , carbon monoxide , molar absorptivity , infrared , extinction (optical mineralogy) , beer–lambert law , anatase , materials science , analytical chemistry (journal) , thermodynamics , chemistry , mineralogy , physics , optics , photocatalysis , organic chemistry , catalysis
The adsorption of carbon monoxide on the TiO2 (anatase) surface at room temperature was studied by infrared spectroscopy and volumetry. The experimental data obtained indicate weak adsorption of CO molecules on the exponentially heterogeneous surface. The adsorption heat decreases according to the logarithmic law in the coverage range of 0.002-0.03. The extinction coefficient of adsorbed CO for the heterogeneous CO/TiO2 system is calculated using the Bouguer-Lambert-Beer law with correction for the Lorenz field taken into account. The conditions for the applicability of the Bouguer-Lambert-Beer's law for the study of heterogeneous systems are discussed.