Effect of rGO Addition Toward Photocatalyst Properties of ZnO/rGO/TiO2 for Rhodamine B Degradation

Haniffudin Nurdiansah; Diah Susanti; Rena Eka Firlyana; Hariyati Purwaningsih

doi:10.4028/www.scientific.net/MSF.964.174

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HomeMaterials Science ForumMaterials Science Forum Vol. 964Effect of rGO Addition Toward Photocatalyst...

Effect of rGO Addition Toward Photocatalyst Properties of ZnO/rGO/TiO₂ for Rhodamine B Degradation

Abstract:

The growth of the textile industry in Indonesia has resulted in increased textile dye waste production. Rhodamine B is one of the dyes that are often used in the textile industry. The use of these dyes will cause serious environmental and biological problems, even able to induce irritation of the skin and eyes. Thus, it is necessary to filter dyes from the textile industry waste in Indonesia. Some conventional methods for removing Rhodamine B are carried out by biochemical and physical-chemical methods, such as liquid membranes, ozonation and adsorption, but this method requires expensive and not very effective costs. One alternative method that can be applied in Indonesia is photocatalysts. Photocatalytics are processes where light and catalyst are simultaneously used to accelerate chemical reactions. In this study, the photocatalyst used was semiconductor material ZnO and TiO₂ with the addition of rGO. rGO synthesis was carried out using the Hummer method, for the synthesis of ZnO using Zinc powder as a precursor, and the synthesis of TiO₂ using precursor of TiCl₃. This study was conducted to analyze the effect of adding 5%, 10%, and 15% rGO to the photocatalytic properties of ZnO / rGO / TiO₂ composites for degradation of Rhodamine B. The characterization process carried out in this study included XRD, SEM & EDX, FTIR, and photocatalytic testing. Photocatalyst materials ZnO / rGO / TiO₂ with variations in the amount of rGO were synthesized as evidenced by XRD testing, where there was a peak for all three component, SEM, shows the morphology of Zn in the form of hexagonal nano rod, rGO in the form of transparent sheets and TiO₂ in the form of agglomerated balls. From FTIR testing, rGO and TiO₂functional groups were seen. The highest efficiency for degradation of Rhodamine-B was obtained for the addition of 15% rGO with a 5-hour irradiation time, ie its efficiency reached 96.92% in degradation of Rhodamine B.

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Periodical:

Materials Science Forum (Volume 964)

Pages:

174-179

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.964.174

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Online since:

July 2019

Authors:

Haniffudin Nurdiansah*, Diah Susanti, Rena Eka Firlyana, Hariyati Purwaningsih

Keywords:

Graphene, Photocatalytic, Rhodamine-B, ZnO/rGO/TiO₂

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