Degradation of organic dyes by P25-reduced graphene oxide: Influence of inorganic salts and surfactants

Jinfeng Wang; Haijin Zhu; Christopher Hurren; Jian Zhao; Esfandiar Pakdel; Zhenyu Li; Xungai Wang

doi:10.1016/j.jece.2015.05.008

Degradation of organic dyes by P25-reduced graphene oxide: Influence of inorganic salts and surfactants

Jinfeng Wang, Haijin Zhu, Christopher Hurren, Jian Zhao, Esfandiar Pakdel, Zhenyu Li, Xungai Wang^*

^*Corresponding author for this work

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

40 Scopus citations

Abstract

Treatment of coloured effluent treatment is a major issue for the textile industry. In this study, catalyst P25-graphene was prepared and applied for degrading dye from an aqueous solution. Three types of dyes were selected to determine the feasibility of the catalyst for the dye degradation, including sulphonic, azoic, and fluorescent dyes. P25-graphene catalyst showed good ability to degrade all selected dyes. The influence of inorganic salts and surfactants on the photocatalytic degradation of rhodamine B using catalyst P25-graphene was also investigated. The degradation of rhodamine B was suppressed by the presence of NaCl, but the effect of Na₂SO₄ was negligible. The degradation of rhodamine B was significantly suppressed by all three types of surfactant, namely anionic, cationic and non-ionic surfactants. NMR technique was used to investigate the mechanisms associated with this suppression.

Original language	English
Pages (from-to)	1437-1443
Number of pages	7
Journal	Journal of Environmental Chemical Engineering
Volume	3
Issue number	3
DOIs	https://doi.org/10.1016/j.jece.2015.05.008
State	Published - 10 Jun 2015
Externally published	Yes

Keywords

Dye removal
Graphene
Photocatalyst
Salt
Surfactant

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10.1016/j.jece.2015.05.008

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title = "Degradation of organic dyes by P25-reduced graphene oxide: Influence of inorganic salts and surfactants",

abstract = "Treatment of coloured effluent treatment is a major issue for the textile industry. In this study, catalyst P25-graphene was prepared and applied for degrading dye from an aqueous solution. Three types of dyes were selected to determine the feasibility of the catalyst for the dye degradation, including sulphonic, azoic, and fluorescent dyes. P25-graphene catalyst showed good ability to degrade all selected dyes. The influence of inorganic salts and surfactants on the photocatalytic degradation of rhodamine B using catalyst P25-graphene was also investigated. The degradation of rhodamine B was suppressed by the presence of NaCl, but the effect of Na2SO4 was negligible. The degradation of rhodamine B was significantly suppressed by all three types of surfactant, namely anionic, cationic and non-ionic surfactants. NMR technique was used to investigate the mechanisms associated with this suppression.",

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T2 - Influence of inorganic salts and surfactants

AU - Wang, Jinfeng

AU - Zhu, Haijin

AU - Hurren, Christopher

AU - Zhao, Jian

AU - Pakdel, Esfandiar

AU - Li, Zhenyu

AU - Wang, Xungai

PY - 2015/6/10

Y1 - 2015/6/10

N2 - Treatment of coloured effluent treatment is a major issue for the textile industry. In this study, catalyst P25-graphene was prepared and applied for degrading dye from an aqueous solution. Three types of dyes were selected to determine the feasibility of the catalyst for the dye degradation, including sulphonic, azoic, and fluorescent dyes. P25-graphene catalyst showed good ability to degrade all selected dyes. The influence of inorganic salts and surfactants on the photocatalytic degradation of rhodamine B using catalyst P25-graphene was also investigated. The degradation of rhodamine B was suppressed by the presence of NaCl, but the effect of Na2SO4 was negligible. The degradation of rhodamine B was significantly suppressed by all three types of surfactant, namely anionic, cationic and non-ionic surfactants. NMR technique was used to investigate the mechanisms associated with this suppression.

AB - Treatment of coloured effluent treatment is a major issue for the textile industry. In this study, catalyst P25-graphene was prepared and applied for degrading dye from an aqueous solution. Three types of dyes were selected to determine the feasibility of the catalyst for the dye degradation, including sulphonic, azoic, and fluorescent dyes. P25-graphene catalyst showed good ability to degrade all selected dyes. The influence of inorganic salts and surfactants on the photocatalytic degradation of rhodamine B using catalyst P25-graphene was also investigated. The degradation of rhodamine B was suppressed by the presence of NaCl, but the effect of Na2SO4 was negligible. The degradation of rhodamine B was significantly suppressed by all three types of surfactant, namely anionic, cationic and non-ionic surfactants. NMR technique was used to investigate the mechanisms associated with this suppression.

KW - Dye removal

KW - Graphene

KW - Photocatalyst

KW - Salt

KW - Surfactant

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ER -

Degradation of organic dyes by P25-reduced graphene oxide: Influence of inorganic salts and surfactants

Abstract

Keywords

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