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

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

19 Citations (Scopus)

49 Downloads (CityUHK Scholars)

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
Pages (from-to)	51-57
Journal	Journal of Materiomics
Volume	3
Issue number	1
Online published	18 Dec 2016
DOIs	https://doi.org/10.1016/j.jmat.2016.12.002
Publication status	Published - Mar 2017
Externally published	Yes

Research Keywords

Glycerol
Photocatalytic activity
Reduced graphene oxide
Titanium dioxide

Publisher's Copyright Statement

This full text is made available under CC-BY-NC-ND 4.0. https://creativecommons.org/licenses/by-nc-nd/4.0/

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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.",

keywords = "Glycerol, Photocatalytic activity, Reduced graphene oxide, Titanium dioxide",

author = "Tan, \{Hui Ling\} and Frans Denny and Mandalena Hermawan and Wong, \{Roong Jien\} and Rose Amal and Ng, \{Yun Hau\}",

year = "2017",

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doi = "10.1016/j.jmat.2016.12.002",

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T1 - Reduced graphene oxide is not a universal promoter for photocatalytic activities of TiO2

AU - Tan, Hui Ling

AU - Denny, Frans

AU - Hermawan, Mandalena

AU - Wong, Roong Jien

AU - Amal, Rose

AU - Ng, Yun Hau

PY - 2017/3

Y1 - 2017/3

N2 - 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.

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.

KW - Glycerol

KW - Photocatalytic activity

KW - Reduced graphene oxide

KW - Titanium dioxide

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U2 - 10.1016/j.jmat.2016.12.002

DO - 10.1016/j.jmat.2016.12.002

M3 - RGC 21 - Publication in refereed journal

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