Mesoporous Cu–Cu2O@TiO2 heterojunction photocatalysts derived from metal–organic frameworks

This study reveals a unique Cu–Cu2O@TiO2 heterojunction photocatalyst obtained with metal–organic framework as the precursor, which can be utilized in dye photodegradation under visible light irradiation. The composition, structure, morphology, porosity, optical properties and photocatalytic perform...

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Bibliographic Details
Published in:RSC advances Vol. 10; no. 25; pp. 14550 - 14555
Main Authors: Zhao, Wenling, Liu, Chengcheng
Format: Journal Article
Language:English
Published: Cambridge Royal Society of Chemistry 09.04.2020
The Royal Society of Chemistry
Subjects:
Catalysts
Catalytic activity
Chemistry
coordination polymers
Copper oxides
Current carriers
Decoloring
decolorization
Dyes
Heterojunctions
irradiation
light
Light irradiation
Metal-organic frameworks
methyl orange
Methylene blue
microparticles
Microspheres
Morphology
Nanocomposites
Nanoparticles
Nitrophenol
Optical properties
p-nitrophenol
Photocatalysis
Photocatalysts
Photodegradation
photolysis
Pollutants
Porosity
porous media
Titanium dioxide
ISSN:2046-2069, 2046-2069
Online Access:Get full text
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Summary:This study reveals a unique Cu–Cu2O@TiO2 heterojunction photocatalyst obtained with metal–organic framework as the precursor, which can be utilized in dye photodegradation under visible light irradiation. The composition, structure, morphology, porosity, optical properties and photocatalytic performance of the obtained catalysts were all investigated in detail. The Cu–Cu2O@TiO2 nanocomposite is composed of lamellar Cu–Cu2O microspheres embedded by numerous TiO2 nanoparticles. Methylene blue, methyl orange and 4-nitrophenol were used as model pollutants to evaluate the photocatalytic activity of the Cu–Cu2O@TiO2 nanocomposite for dye degradation under visible light irradiation. Nearly 95% decolourisation efficiency of Methylene blue was achieved by the Cu–Cu2O@TiO2 photocatalyst within 3 h, which is much higher than that of TiO2 or Cu2O catalysts. The excellent photocatalytic activity was primarily attributed to the unique MOF-based mesoporous structure, the enlarged photo-adsorption range and the efficient separation of the charge carriers in the Cu–Cu2O@TiO2 heterojunction.
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ISSN:2046-2069
2046-2069
DOI:10.1039/d0ra01327g