Reduced graphene oxide is not a universal promoter for photocatalytic activities of TiO2

Hui Ling Tan; Frans Denny; Mandalena Hermawan; Roong Jien Wong; Rose Amal; Yun Hau Ng

doi:10.1016/j.jmat.2016.12.002

Reduced graphene oxide is not a universal promoter for photocatalytic activities of TiO₂

Hui Ling Tan, Frans Denny, Mandalena Hermawan, Roong Jien Wong, Rose Amal^*, Yun Hau Ng

^*Corresponding author for this work

Chemical Engineering

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

19 Scopus citations

Abstract

Addition of reduced graphene oxide (RGO) to P25 TiO₂ was made and its impacts on photocatalytic oxidation of various organic substances were studied. Although the presence of RGO in TiO₂ can enhance certain TiO₂-based photocatalytic reactions, it is not a universal observation that can be expected in all types of organic substances. The factor of photocatalytic activity enhancement is strongly affected by the various functional groups appeared in the organic substances. In this work, it is realised that the length of alkyl chain in alcohols and carboxylic acids have the minimum influence on the overall activity while the number of hydroxyl groups can promote the further activity enhancement in the presence of RGO.

Original language	English (US)
Pages (from-to)	51-57
Number of pages	7
Journal	Journal of Materiomics
Volume	3
Issue number	1
DOIs	https://doi.org/10.1016/j.jmat.2016.12.002
State	Published - Mar 1 2017

Keywords

Glycerol
Photocatalytic activity
Reduced graphene oxide
Titanium dioxide

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces, Coatings and Films
Metals and Alloys

Access to Document

10.1016/j.jmat.2016.12.002

Cite this

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title = "Reduced graphene oxide is not a universal promoter for photocatalytic activities of TiO2",

abstract = "Addition of reduced graphene oxide (RGO) to P25 TiO2 was made and its impacts on photocatalytic oxidation of various organic substances were studied. Although the presence of RGO in TiO2 can enhance certain TiO2-based photocatalytic reactions, it is not a universal observation that can be expected in all types of organic substances. The factor of photocatalytic activity enhancement is strongly affected by the various functional groups appeared in the organic substances. In this work, it is realised that the length of alkyl chain in alcohols and carboxylic acids have the minimum influence on the overall activity while the number of hydroxyl groups can promote the further activity enhancement in the presence of RGO.",

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AU - Tan, Hui Ling

AU - Denny, Frans

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AU - Amal, Rose

AU - Ng, Yun Hau

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AB - Addition of reduced graphene oxide (RGO) to P25 TiO2 was made and its impacts on photocatalytic oxidation of various organic substances were studied. Although the presence of RGO in TiO2 can enhance certain TiO2-based photocatalytic reactions, it is not a universal observation that can be expected in all types of organic substances. The factor of photocatalytic activity enhancement is strongly affected by the various functional groups appeared in the organic substances. In this work, it is realised that the length of alkyl chain in alcohols and carboxylic acids have the minimum influence on the overall activity while the number of hydroxyl groups can promote the further activity enhancement in the presence of RGO.

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KW - Photocatalytic activity

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