Enhanced photocatalytic decomposition of methylene blue and toluene gas with hydrothermally coated TiO2-supported on Ag–CaAl2O4:Eu2+, Nd3+ long-lasting phosphor

Da hyun Lee; Shielah Mavengere; Bumrae Cho; Jung Sik kim

doi:10.1007/s11144-023-02550-5

Enhanced photocatalytic decomposition of methylene blue and toluene gas with hydrothermally coated TiO₂-supported on Ag–CaAl₂O₄:Eu²⁺, Nd³⁺ long-lasting phosphor

Da hyun Lee, Shielah Mavengere, Bumrae Cho, Jung Sik kim

Department of Materials Science and Engineering

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

Abstract

Titanium dioxide was coated by hydrothermal reaction on the surface of CaAl₂O₄:Eu²⁺,Nd³⁺ long-lasting phosphor beads on which a silver noble metal was impregnated to enhance photocatalytic reactivity. The phosphor composite as a TiO₂ supporter was fabricated in the form of beads for convenient applications. Silver was impregnated on the CaAl₂O₄:Eu²⁺,Nd³⁺ long-lasting phosphor using a silver nitrate aqueous solution prior to TiO₂ coating process. The morphological and compositional characteristics of the TiO₂ coated phosphor composite materials were measured using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray photoelectron spectrometer (XPS). The photocatalytic properties of the TiO₂ coated phosphor composite materials were analyzed through decompositions of both methylene blue dye solution and toluene gas under ultraviolet and visible light irradiation. Through measuring the variation of photocatalytic reaction with different Ag concentrations, 0.035 M Ag-impregnated TiO₂/CaAl₂O₄:Eu²⁺,Nd³⁺ phosphor composite showed the best photocatalysis efficiency under UV and visible light illumination.

Original language	English
Pages (from-to)	571-585
Number of pages	15
Journal	Reaction Kinetics, Mechanisms and Catalysis
Volume	137
Issue number	1
DOIs	https://doi.org/10.1007/s11144-023-02550-5
State	Published - Feb 2024

Keywords

Ag doped
Beads
CaAlO:Eu,Nd phosphor
Hetero junction
Photocatalytic activity
TiO
Toluene volatile organic compound
hydrothermal method

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10.1007/s11144-023-02550-5

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title = "Enhanced photocatalytic decomposition of methylene blue and toluene gas with hydrothermally coated TiO2-supported on Ag–CaAl2O4:Eu2+, Nd3+ long-lasting phosphor",

abstract = "Titanium dioxide was coated by hydrothermal reaction on the surface of CaAl2O4:Eu2+,Nd3+ long-lasting phosphor beads on which a silver noble metal was impregnated to enhance photocatalytic reactivity. The phosphor composite as a TiO2 supporter was fabricated in the form of beads for convenient applications. Silver was impregnated on the CaAl2O4:Eu2+,Nd3+ long-lasting phosphor using a silver nitrate aqueous solution prior to TiO2 coating process. The morphological and compositional characteristics of the TiO2 coated phosphor composite materials were measured using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray photoelectron spectrometer (XPS). The photocatalytic properties of the TiO2 coated phosphor composite materials were analyzed through decompositions of both methylene blue dye solution and toluene gas under ultraviolet and visible light irradiation. Through measuring the variation of photocatalytic reaction with different Ag concentrations, 0.035 M Ag-impregnated TiO2/CaAl2O4:Eu2+,Nd3+ phosphor composite showed the best photocatalysis efficiency under UV and visible light illumination.",

keywords = "Ag doped, Beads, CaAlO:Eu,Nd phosphor, Hetero junction, Photocatalytic activity, TiO, Toluene volatile organic compound, hydrothermal method",

author = "Lee, {Da hyun} and Shielah Mavengere and Bumrae Cho and kim, {Jung Sik}",

note = "Publisher Copyright: {\textcopyright} 2023, Akad{\'e}miai Kiad{\'o}, Budapest, Hungary.",

year = "2024",

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doi = "10.1007/s11144-023-02550-5",

language = "English",

volume = "137",

pages = "571--585",

journal = "Reaction Kinetics, Mechanisms and Catalysis",

issn = "1878-5190",

publisher = "Springer Science and Business Media B.V.",

number = "1",

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Enhanced photocatalytic decomposition of methylene blue and toluene gas with hydrothermally coated TiO₂-supported on Ag–CaAl₂O₄:Eu²⁺, Nd³⁺ long-lasting phosphor. / Lee, Da hyun; Mavengere, Shielah; Cho, Bumrae et al.
In: Reaction Kinetics, Mechanisms and Catalysis, Vol. 137, No. 1, 02.2024, p. 571-585.

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

TY - JOUR

T1 - Enhanced photocatalytic decomposition of methylene blue and toluene gas with hydrothermally coated TiO2-supported on Ag–CaAl2O4:Eu2+, Nd3+ long-lasting phosphor

AU - Lee, Da hyun

AU - Mavengere, Shielah

AU - Cho, Bumrae

AU - kim, Jung Sik

PY - 2024/2

Y1 - 2024/2

N2 - Titanium dioxide was coated by hydrothermal reaction on the surface of CaAl2O4:Eu2+,Nd3+ long-lasting phosphor beads on which a silver noble metal was impregnated to enhance photocatalytic reactivity. The phosphor composite as a TiO2 supporter was fabricated in the form of beads for convenient applications. Silver was impregnated on the CaAl2O4:Eu2+,Nd3+ long-lasting phosphor using a silver nitrate aqueous solution prior to TiO2 coating process. The morphological and compositional characteristics of the TiO2 coated phosphor composite materials were measured using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray photoelectron spectrometer (XPS). The photocatalytic properties of the TiO2 coated phosphor composite materials were analyzed through decompositions of both methylene blue dye solution and toluene gas under ultraviolet and visible light irradiation. Through measuring the variation of photocatalytic reaction with different Ag concentrations, 0.035 M Ag-impregnated TiO2/CaAl2O4:Eu2+,Nd3+ phosphor composite showed the best photocatalysis efficiency under UV and visible light illumination.

AB - Titanium dioxide was coated by hydrothermal reaction on the surface of CaAl2O4:Eu2+,Nd3+ long-lasting phosphor beads on which a silver noble metal was impregnated to enhance photocatalytic reactivity. The phosphor composite as a TiO2 supporter was fabricated in the form of beads for convenient applications. Silver was impregnated on the CaAl2O4:Eu2+,Nd3+ long-lasting phosphor using a silver nitrate aqueous solution prior to TiO2 coating process. The morphological and compositional characteristics of the TiO2 coated phosphor composite materials were measured using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray photoelectron spectrometer (XPS). The photocatalytic properties of the TiO2 coated phosphor composite materials were analyzed through decompositions of both methylene blue dye solution and toluene gas under ultraviolet and visible light irradiation. Through measuring the variation of photocatalytic reaction with different Ag concentrations, 0.035 M Ag-impregnated TiO2/CaAl2O4:Eu2+,Nd3+ phosphor composite showed the best photocatalysis efficiency under UV and visible light illumination.

KW - Ag doped

KW - Beads

KW - CaAlO:Eu,Nd phosphor

KW - Hetero junction

KW - Photocatalytic activity

KW - TiO

KW - Toluene volatile organic compound

KW - hydrothermal method

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DO - 10.1007/s11144-023-02550-5

M3 - Article

AN - SCOPUS:85179304754

SN - 1878-5190

VL - 137

SP - 571

EP - 585

JO - Reaction Kinetics, Mechanisms and Catalysis

JF - Reaction Kinetics, Mechanisms and Catalysis

IS - 1

ER -

Enhanced photocatalytic decomposition of methylene blue and toluene gas with hydrothermally coated TiO₂-supported on Ag–CaAl₂O₄:Eu²⁺, Nd³⁺ long-lasting phosphor

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Keywords

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