A surfactant free method for rutile TiO2 microspheres-graphene oxide composite and its photocatalytic performance

Guiming Peng; Ruian Du; Quanming Peng; Suqin Wu; Changlin Yu

doi:10.1016/j.matchemphys.2018.04.092

A surfactant free method for rutile TiO₂ microspheres-graphene oxide composite and its photocatalytic performance

Guiming Peng, Ruian Du, Quanming Peng, Suqin Wu, Changlin Yu

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

8 Scopus citations

Abstract

Titanium dioxide (TiO₂) nanostructures and their graphene related composites have attracted tremendous interests due to their wide applications in organic contaminant photodegradation and renewable energy conversion and storage. In this report, rutile TiO₂ microspheres with diameter of ∼2.2 μm and TiO₂ microspheres/graphene oxide composite were synthesized through a simple surfactant free solvent-thermal method. SEM images at different synthesis stages disclosed that the TiO₂ microspheres initialized from radically assembled TiO₂ nanorods clusters, and grew up through the nanorod root fusion due to the lateral growth of the nanorods. Photodegradation experiments demonstrated the TiO₂/GO composite exhibited more pronounced dye degradation performance than TiO₂ microspheres owing to the excess charge transport route afforded by GO. In addition, photochemical stability test indicates the photo-oxidation of GO occurs in TiO₂/GO composite upon UV light irradiation.

Original language	English
Pages (from-to)	34-40
Number of pages	7
Journal	Materials Chemistry and Physics
Volume	214
DOIs	https://doi.org/10.1016/j.matchemphys.2018.04.092
State	Published - 1 Aug 2018
Externally published	Yes

Keywords

Graphene oxide
Microsphere
Photo-catalysis
Photochemical stability
Rutile titanium dioxide

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.matchemphys.2018.04.092

Cite this

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title = "A surfactant free method for rutile TiO2 microspheres-graphene oxide composite and its photocatalytic performance",

abstract = "Titanium dioxide (TiO2) nanostructures and their graphene related composites have attracted tremendous interests due to their wide applications in organic contaminant photodegradation and renewable energy conversion and storage. In this report, rutile TiO2 microspheres with diameter of ∼2.2 μm and TiO2 microspheres/graphene oxide composite were synthesized through a simple surfactant free solvent-thermal method. SEM images at different synthesis stages disclosed that the TiO2 microspheres initialized from radically assembled TiO2 nanorods clusters, and grew up through the nanorod root fusion due to the lateral growth of the nanorods. Photodegradation experiments demonstrated the TiO2/GO composite exhibited more pronounced dye degradation performance than TiO2 microspheres owing to the excess charge transport route afforded by GO. In addition, photochemical stability test indicates the photo-oxidation of GO occurs in TiO2/GO composite upon UV light irradiation.",

keywords = "Graphene oxide, Microsphere, Photo-catalysis, Photochemical stability, Rutile titanium dioxide",

author = "Guiming Peng and Ruian Du and Quanming Peng and Suqin Wu and Changlin Yu",

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T1 - A surfactant free method for rutile TiO2 microspheres-graphene oxide composite and its photocatalytic performance

AU - Peng, Guiming

AU - Du, Ruian

AU - Peng, Quanming

AU - Wu, Suqin

AU - Yu, Changlin

PY - 2018/8/1

Y1 - 2018/8/1

N2 - Titanium dioxide (TiO2) nanostructures and their graphene related composites have attracted tremendous interests due to their wide applications in organic contaminant photodegradation and renewable energy conversion and storage. In this report, rutile TiO2 microspheres with diameter of ∼2.2 μm and TiO2 microspheres/graphene oxide composite were synthesized through a simple surfactant free solvent-thermal method. SEM images at different synthesis stages disclosed that the TiO2 microspheres initialized from radically assembled TiO2 nanorods clusters, and grew up through the nanorod root fusion due to the lateral growth of the nanorods. Photodegradation experiments demonstrated the TiO2/GO composite exhibited more pronounced dye degradation performance than TiO2 microspheres owing to the excess charge transport route afforded by GO. In addition, photochemical stability test indicates the photo-oxidation of GO occurs in TiO2/GO composite upon UV light irradiation.

AB - Titanium dioxide (TiO2) nanostructures and their graphene related composites have attracted tremendous interests due to their wide applications in organic contaminant photodegradation and renewable energy conversion and storage. In this report, rutile TiO2 microspheres with diameter of ∼2.2 μm and TiO2 microspheres/graphene oxide composite were synthesized through a simple surfactant free solvent-thermal method. SEM images at different synthesis stages disclosed that the TiO2 microspheres initialized from radically assembled TiO2 nanorods clusters, and grew up through the nanorod root fusion due to the lateral growth of the nanorods. Photodegradation experiments demonstrated the TiO2/GO composite exhibited more pronounced dye degradation performance than TiO2 microspheres owing to the excess charge transport route afforded by GO. In addition, photochemical stability test indicates the photo-oxidation of GO occurs in TiO2/GO composite upon UV light irradiation.

KW - Graphene oxide

KW - Microsphere

KW - Photo-catalysis

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