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ŠIMŠÍKOVÁ, M. BARTOŠ, M. ČECHAL, J. ŠIKOLA, T.
Original Title
Decolorization of organic dyes by gold nanoflowers prepared on reduced graphene oxide by tea polyphenols
Type
journal article in Web of Science
Language
English
Original Abstract
Green approaches for chemical syntheses are becoming important in various fields. Here, we report on the formation of 3D branched gold nanoparticles (nanoflowers) on graphene oxide surface (rGO-AuNFs) in the presence of green tea without requiring any additional seeds or surfactants. The morphology, composition, and optical properties of the composite have been characterized by scanning electron microscopy (SEM), Raman spectroscopy, Fourier transformation (FT-IR) infrared spectroscopy, X-ray photoelectron spectroscopy, UV-Vis spectroscopy, and fluorescence spectroscopy. We demonstrate the catalytic efficiency of rGO-AuNFs by measurement of the degradation of three commercial organic dyes – Safranin T, Eosin Y, and Congo red. The observations indicate the enhanced reduction of the mentioned dyes in comparison with uncatalyzed measurements. Contrary to common approaches, no irradiation is required for dye decolorization in the presence of NaBH4. This makes the presented procedure attractive for application in catalyst materials.
Keywords
Organic Dyes; Au Nanostrucrures; Graphene; Decoloration
Authors
ŠIMŠÍKOVÁ, M.; BARTOŠ, M.; ČECHAL, J.; ŠIKOLA, T.
Released
7. 5. 2016
ISBN
2044-4753
Periodical
Catalysis Science and Technology
Year of study
6
Number
9
State
United Kingdom of Great Britain and Northern Ireland
Pages from
3008
Pages to
3017
Pages count
10
BibTex
@article{BUT127744, author="Michaela {Šimšíková} and Miroslav {Bartoš} and Jan {Čechal} and Tomáš {Šikola}", title="Decolorization of organic dyes by gold nanoflowers prepared on reduced graphene oxide by tea polyphenols", journal="Catalysis Science and Technology", year="2016", volume="6", number="9", pages="3008--3017", doi="10.1039/c5cy01836f", issn="2044-4753" }