ENHANCED DECOLORIZATION OF METHYLENE BLUE IN AQUEOUS SOLUTION OVER COMPOSITE PHOTOSENSITIZED TiO2 CATALYST BY VISIBLE LIGHT

Vladimir F. Georgiev

ENHANCED DECOLORIZATION OF METHYLENE BLUE IN AQUEOUS SOLUTION OVER COMPOSITE PHOTOSENSITIZED TiO2 CATALYST BY VISIBLE LIGHT

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The synergistic effect of coupling a squaraine dye (SQ) as a photosensitizer with a composite catalyst containing TiO₂ and reduced graphene oxide (TiO₂/rGO) has been investigated. A three-component TiO₂//rGO/SQ catalyst was synthesized and its ability to improve the decoloration of Methylene Blue (MB) in aqueous solution under irradiation of visible light has been tested. XRD, SEM, TEM and VIS spectroscopy were employed to characterize the samples. Squaraine dye being excited by visible light is capable of transferring electrons to TiO₂//rGO material which contributes to increasing the apparent decolorization rate constant up to 0.028 mol/l.s. that is 18 times higher than that of the bare titania.

Original language	English
Pages (from-to)	96-103
Number of pages	8
Journal	Journal of Chemical Technology and Metallurgy
Volume	56
Issue number	1
Publication status	Published - 2020
Externally published	Yes

Keywords

grapheme
photosensitizer
phоtосаtаlysis
squaraine
TiО

ASJC Scopus subject areas

Chemical Engineering(all)
Industrial and Manufacturing Engineering

Cite this

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title = "ENHANCED DECOLORIZATION OF METHYLENE BLUE IN AQUEOUS SOLUTION OVER COMPOSITE PHOTOSENSITIZED TiO2 CATALYST BY VISIBLE LIGHT",

abstract = "The synergistic effect of coupling a squaraine dye (SQ) as a photosensitizer with a composite catalyst containing TiO2 and reduced graphene oxide (TiO2/rGO) has been investigated. A three-component TiO2//rGO/SQ catalyst was synthesized and its ability to improve the decoloration of Methylene Blue (MB) in aqueous solution under irradiation of visible light has been tested. XRD, SEM, TEM and VIS spectroscopy were employed to characterize the samples. Squaraine dye being excited by visible light is capable of transferring electrons to TiO2//rGO material which contributes to increasing the apparent decolorization rate constant up to 0.028 mol/l.s. that is 18 times higher than that of the bare titania.",

keywords = "grapheme, photosensitizer, phоtосаtаlysis, squaraine, TiО",

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year = "2020",

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T1 - ENHANCED DECOLORIZATION OF METHYLENE BLUE IN AQUEOUS SOLUTION OVER COMPOSITE PHOTOSENSITIZED TiO2 CATALYST BY VISIBLE LIGHT

AU - Georgiev, Vladimir F.

PY - 2020

Y1 - 2020

N2 - The synergistic effect of coupling a squaraine dye (SQ) as a photosensitizer with a composite catalyst containing TiO2 and reduced graphene oxide (TiO2/rGO) has been investigated. A three-component TiO2//rGO/SQ catalyst was synthesized and its ability to improve the decoloration of Methylene Blue (MB) in aqueous solution under irradiation of visible light has been tested. XRD, SEM, TEM and VIS spectroscopy were employed to characterize the samples. Squaraine dye being excited by visible light is capable of transferring electrons to TiO2//rGO material which contributes to increasing the apparent decolorization rate constant up to 0.028 mol/l.s. that is 18 times higher than that of the bare titania.

AB - The synergistic effect of coupling a squaraine dye (SQ) as a photosensitizer with a composite catalyst containing TiO2 and reduced graphene oxide (TiO2/rGO) has been investigated. A three-component TiO2//rGO/SQ catalyst was synthesized and its ability to improve the decoloration of Methylene Blue (MB) in aqueous solution under irradiation of visible light has been tested. XRD, SEM, TEM and VIS spectroscopy were employed to characterize the samples. Squaraine dye being excited by visible light is capable of transferring electrons to TiO2//rGO material which contributes to increasing the apparent decolorization rate constant up to 0.028 mol/l.s. that is 18 times higher than that of the bare titania.

KW - grapheme

KW - photosensitizer

KW - phоtосаtаlysis

KW - squaraine

KW - TiО

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JO - Journal of the University of Chemical Technology and Metallurgy

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ENHANCED DECOLORIZATION OF METHYLENE BLUE IN AQUEOUS SOLUTION OVER COMPOSITE PHOTOSENSITIZED TiO2 CATALYST BY VISIBLE LIGHT

Abstract

Keywords

ASJC Scopus subject areas

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