Sinergistic effect of titanium dioxide and iron oxide aerosols in adsorption and photocatalytic oxidation of dimethyl methylphosphonate

Kinetics of adsorption, dark and photocatalytic destruction of dimethyl methylphosphonate (DMMP) vapors was investigated on the surface of nanosized FeOOH (3 nm) and mixture of FeOOH with TiO 2 (5 nm) (1 : 1) in aerosol state in a closed chamber. FeOOH aerosol adsorbs DMMP (100 ppm) with characteris...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2015-04, Vol.89 (4), p.693-698
Main Authors: Besov, A. S., Vorontsov, A. V.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Physical Chemistry
Physical Chemistry of Surface Phenomena
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Summary:Kinetics of adsorption, dark and photocatalytic destruction of dimethyl methylphosphonate (DMMP) vapors was investigated on the surface of nanosized FeOOH (3 nm) and mixture of FeOOH with TiO 2 (5 nm) (1 : 1) in aerosol state in a closed chamber. FeOOH aerosol adsorbs DMMP (100 ppm) with characteristic time 32 s and does not show photocatalytic activity. Adsorbed DMMP undergoes hydrolysis with formation of gaseous methanol with characteristic time 11 min, while mixed FeOOH-TiO 2 aerosol adsorbs DMMP and converts it into CO and CO 2 under the action of UV light.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024415040044