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Photocatalytic degradation of salicylic acid by colloidal Fe 2 O 3 particles
Author(s) -
Pal Bonamali,
Sharon Maheshwar
Publication year - 1998
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(1998110)73:3<269::aid-jctb944>3.0.co;2-3
Subject(s) - salicylic acid , photocatalysis , decomposition , chemistry , aqueous solution , reaction rate constant , colloid , irradiation , visible spectrum , titanium dioxide , kinetics , inorganic chemistry , catalysis , chemical engineering , nuclear chemistry , photochemistry , materials science , organic chemistry , physics , optoelectronics , quantum mechanics , nuclear physics , biochemistry , engineering
The photocatalytic decomposition of salicylic acid with visible light in an oxygenated aqueous suspension of colloidal α‐Fe 2 O 3 particles has been studied. About 10–20 ppm of this organic is degraded within 1 h of irradiation, depending upon the initial salicylic acid concentration. Kinetic parameters have been investigated in terms of a first order rate equation. The rate constant ( k ap ) for this heterogeneous photocatalysis was evaluated as a function of the initial concentration of salicylic acid. Carbon dioxide has been detected over prolonged visible light irradiation. © 1998 Society of Chemical Industry