This study presents a simple and inexpensive method for preparation of ZnO/Au thin film photocatalysts. Nanostructured ZnO and modified with gold nanoparticles zinc oxide films are obtained on glass substrate by dip-coating technique. The precursor suspension is prepared using commercial ZnO powder, ethanol and polyethyleneglycol, while the gold nanoparticles are obtained by classical citrate synthesis. Thin ZnO and ZnO/Au films are characterized by Atomic Force Microscopy (AFM), Scanning Electron Microscopy(SEM), Energy Dispersive X-ray Spectroscopy (EDS), X-ray diffraction and UV-Vis spectroscopy. The photocatalytic action of the samples is studied in respect to Malachite Green photodegradation under UV and visible light irradiation. The modified ZnO/Au films manifest higher photocatalytic efficiency under UV and visible light illumination in comparison to ZnO ones. A possible mechanism for explanation of the observed effect is proposed. (C) 2014 Elsevier B.V. All rights reserved.
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Univ Sofia, Fac Chem, Sofia 1164, BulgariaUniv Sofia, Fac Chem, Sofia 1164, Bulgaria
Donkova, B.
Vasileva, P.
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Univ Sofia, Fac Chem, Sofia 1164, BulgariaUniv Sofia, Fac Chem, Sofia 1164, Bulgaria
Vasileva, P.
Nihtianova, D.
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Bulgarian Acad Sci, Inst Mineral & Crystallog, BU-1113 Sofia, Bulgaria
Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, BulgariaUniv Sofia, Fac Chem, Sofia 1164, Bulgaria
Nihtianova, D.
Velichkova, N.
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Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, BulgariaUniv Sofia, Fac Chem, Sofia 1164, Bulgaria
Velichkova, N.
Stefanov, P.
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Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, BulgariaUniv Sofia, Fac Chem, Sofia 1164, Bulgaria
Stefanov, P.
Mehandjiev, D.
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Bulgarian Acad Sci, Inst Catalysis, BU-1113 Sofia, BulgariaUniv Sofia, Fac Chem, Sofia 1164, Bulgaria
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Univ Sofia, Fac Chem, Sofia 1164, BulgariaUniv Sofia, Fac Chem, Sofia 1164, Bulgaria
Donkova, B.
Vasileva, P.
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Univ Sofia, Fac Chem, Sofia 1164, BulgariaUniv Sofia, Fac Chem, Sofia 1164, Bulgaria
Vasileva, P.
Nihtianova, D.
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机构:
Bulgarian Acad Sci, Inst Mineral & Crystallog, BU-1113 Sofia, Bulgaria
Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, BulgariaUniv Sofia, Fac Chem, Sofia 1164, Bulgaria
Nihtianova, D.
Velichkova, N.
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h-index: 0
机构:
Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, BulgariaUniv Sofia, Fac Chem, Sofia 1164, Bulgaria
Velichkova, N.
Stefanov, P.
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h-index: 0
机构:
Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, BulgariaUniv Sofia, Fac Chem, Sofia 1164, Bulgaria
Stefanov, P.
Mehandjiev, D.
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h-index: 0
机构:
Bulgarian Acad Sci, Inst Catalysis, BU-1113 Sofia, BulgariaUniv Sofia, Fac Chem, Sofia 1164, Bulgaria