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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 56, Number 1
JKCSEZ 56(1)
February 20, 2012

Title	Efficient Photocatalytic Degradation of Salicylic Acid by Bactericidal ZnO
Author	Chockalingam Karunakaran, Binu Naufal, Paramasivan Gomathisankar
Keywords	Semiconductor, Nanoparticles, Photodegradation, Bactericidal activity
Abstract	Salicylic acid degrades at different rates under UV-A light on TiO2, ZnO, CuO, Fe2O3, Fe3O4 and ZrO2 nanocrystals and all the oxides exhibit sustainable photocatalysis. While ZnO-photocatalysis displays Langmuir-Hinshelwood kinetics the others follow first order on [salicylic acid]. The degradation on all the oxides enhance with illumination intensity. Dissolved oxygen is essential for the photodegradation. ZnO is the most efficient photocatalyst to degrade salicylic acid. Besides serving as the effective photocatalyst to degrade salicylic acid it also acts as a bactericide and inactivates E.coli even in absence of direct light.
Page	108 - 114
Full Text	PDF

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