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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 12, No. 1, 2015, pp. 151-160
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Bioline Code: st15013
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 12, No. 1, 2015, pp. 151-160
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Synthesis and application of multiple rods gold–zinc oxide nanostructures in the photocatalytic degradation of methyl orange
Arab Chamjangali, M.; Bagherian, G.; Bahramian, B. & Fahimi Rad, B.
Abstract
Zinc oxide and gold–zinc oxide (Au–ZnO)
nanostructures with multiple rods (multipods) morphology
were successfully prepared. Au–ZnO nanostructures were
synthesized via a simple precipitation route method in the
presence of oligoaniline-coated gold nanoparticles. The
Au–ZnO catalyst obtained was applied for the degradation
of methyl orange in an aqueous solution under UV irradiation.
Effects of the operational parameters such as the
solution pH, amount of photocatalyst, and dye concentration
on the photocatalytic degradation and decolorization
of methyl orange were studied. Detailed studies including
kinetic study and regeneration of catalyst were carried out
on the optimal conditions for the photodegradation of
methyl orange by Au–ZnO multipods in aqueous solution.
Effect of foreign species on the photodegradation of methyl
orange was also studied. An enhancement of the photocatalytic
activities for photodegradation of methyl orange
was observed when the gold nanoparticles were loaded on
the zinc oxide multipods. The proposed catalyst was
applied for the degradation of methyl orange in synthetic
wastewater samples with satisfactory results.
Keywords
Photocatalyst; Photodegradation; Decolorization; Gold–zinc oxide; Multipods
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