Detail publikačního výsledku

Decolorization of organic dyes by gold nanoflowers prepared on reduced graphene oxide by tea polyphenols

ŠIMŠÍKOVÁ, M.; BARTOŠ, M.; ČECHAL, J.; ŠIKOLA, T.

Originální název

Decolorization of organic dyes by gold nanoflowers prepared on reduced graphene oxide by tea polyphenols

Anglický název

Decolorization of organic dyes by gold nanoflowers prepared on reduced graphene oxide by tea polyphenols

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

Organic Dyes; Au Nanostrucrures; Graphene; Decoloration

Klíčová slova v angličtině

Organic Dyes; Au Nanostrucrures; Graphene; Decoloration

Autoři

ŠIMŠÍKOVÁ, M.; BARTOŠ, M.; ČECHAL, J.; ŠIKOLA, T.

Rok RIV

2017

Vydáno

07.05.2016

ISSN

2044-4753

Periodikum

Catalysis Science & Technology

Svazek

6

Číslo

9

Stát

Spojené království Velké Británie a Severního Irska

Strany od

3008

Strany do

3017

Strany počet

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 & Technology",
  year="2016",
  volume="6",
  number="9",
  pages="3008--3017",
  doi="10.1039/c5cy01836f",
  issn="2044-4753"
}