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9. Effect of
Transition Metal Ions Doping on ZnS for Eosin Y Degradation
Dipti Vaya*, Surbhi Benjamin,
V.K. Sharma and Suresh C. Ameta
Photochemistry Laboratory,
Department of Chemistry, University College of Science,
M. L. Sukhadia University,
Udaipur – 313002 India.
e-mail:
dipticharu@yahoo.com
ABSTRACT
The effect of transition metal
ions such as V (II), Cr (IV), Mn (II), Fe (III), Co (III), Ni (II)
and Cu (II) doped ZnS has been investigated for photocatalytic
bleaching of eosin Y. Doped samples were synthesized by stirring and
microwave methods. The effect of concentration of dopants on the
rate of photocatalytic bleaching of dye has also been observed. The
rate of photocatalytic bleaching of dye increases with increasing
the concentration of dopant up to a certain limit with all these
metal ions, but decreases after further concentration of dopants. A
tentative mechanism has been proposed.
Key Words: Transition metal
ions, zinc sulphide, photocatalysis, eosin Y
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