Preparation, Characterization and Photocatalytic Properties of Rubber-TiO2-rGO Composite Sheets for Dye Decomposition in Wastewater

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In this work, rubber-TiO2-rGO (RT-rGO) composite sheets were successfully prepared by a simple latex mixing-casting method using TiO2 and natural rubber latex with different amounts of rGO loading. The prepared RT-rGO sheet samples were characterized by XRD, FT-IR, Raman, SEM and EDS techniques. The photocatalytic properties of the prepared RT-rGO sheets as catalyst were evaluated using methylene blue (MB) dye solution under UV light irradiation. The result indicated that all the composite sheets loaded with rGO had better photocatalytic activities than the sheet without rGO loading. RT-rGO6.2% sheet showed the highest removal efficiency of 93.3% which has the rate constant (kapp) as 98.2 times higher than the unloaded sheet. Furthermore, the efficiency of the RT-rGO sheet upon the repeated usage was also studied. The result indicated that the sheet could be easily used, recovered and reused many times with no need for the cleaning in between successive uses. Thus, the RT-rGO sheet appears to be an attractive-material for the wastewater treatment or the water purification industry.

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738-744

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August 2017

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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[1] E.C. Ilinoiu, R. Pode, F. Manea, L.A. Colar, A. Jakab, C. Orha, C. Ratiu, C. Lazau, P. Sfarloaga, Photocatalytic activity of nitrogen-doped TiO2 modified zeolite in the degradation of Reactive Yellow 125 azo dye, J. Taiwan Inst. Chem. E. 44 (2013).

DOI: 10.1016/j.jtice.2012.09.006

Google Scholar

[2] K. Li, J. Xiong, T. Chen, L. Yan, Y. Dai, D. Song, Y. Lv, Z. Zeng, Preparation of graphene TiO2 composites by nonionic surfactant strategy and their simulated sunlight and visible light photocatalytic activity towards representative aqueous POPs degradation, J. Hazard. Mater. 250-251 (2013).

DOI: 10.1016/j.jhazmat.2013.01.069

Google Scholar

[3] H. Wang, H.L. Wang, W.F. Jiang, Z.Q. Li, Photocatalytic degradation of 2, 4-dinitrophenol (DNP) by multi-walled carbon nanotubes (MWCNTs)/TiO2 composite in aqueous solution under solar irradiation, Water Res. 43 (2009) 204-210.

DOI: 10.1016/j.watres.2008.10.003

Google Scholar

[4] C. Sriwong, S. Wongnawa, O. Patarapaiboolchai, Photocatalytic activity of rubber sheet impregnated with TiO2 particles and its recyclability, Catal. Commun. 9 (2008) 213-218.

DOI: 10.1016/j.catcom.2007.05.037

Google Scholar

[5] S. Singh, H. Mahalingam, P.K. Singh, Polymer-supported titanium dioxide photocatalysts for environmental remediation: A review, Appl. Catal., A. 462-463 (2013) 178-195.

DOI: 10.1016/j.apcata.2013.04.039

Google Scholar

[6] C. Sriwong, S. Wongnawa, O. Patarapaiboolchai, Recyclable thin TiO2-embedded rubber sheet and dye degradation, Chem. Eng. J. 191 (2012) 210-217.

DOI: 10.1016/j.cej.2012.03.005

Google Scholar

[7] S. Liu, H. Sun, S. Liu, S. Wang, Graphene facilitated visible light Photodegradation of methylene blue over titanium dioxide photocatalysts, Chem. Eng. J. 214 (2013) 298-303.

DOI: 10.1016/j.cej.2012.10.058

Google Scholar

[8] M. Shi, J. Shen, H. Ma, Z. Li, X. Lu, N. Li, M. Ye, Preparation of graphene-TiO2 composite by hydrothermal method from peroxotitanium acid and it photocatalytic properties, Colloids Surf., A. 405 (2012) 30-37.

DOI: 10.1016/j.colsurfa.2012.04.031

Google Scholar

[9] P.K. Dubey, P. Tripathi, R.S. Tiwari, A.S.K. Sinha, O.N. Srivastava, Synthesis of reduced graphene oxide-TiO2 nanoparticle composite systems and its application in hydrogen production, Int. J. Hydrogen Energy. 39 (2014) 16282-16292.

DOI: 10.1016/j.ijhydene.2014.03.104

Google Scholar

[10] R.S. Dariani, A. Esmaeili, A. Mortezaali, S. Dehghanpour, Photocatalytic reaction and degradation of methylene blue on TiO2 nano-sized particles, Optik. 127 (2016) 7143-7154.

DOI: 10.1016/j.ijleo.2016.04.026

Google Scholar

[11] C. Nethravathi, M. Rajamathi, Chemical modified graphene sheets produced by thee solvothermal reduction of colloidal dispersions of graphite oxide, Carbon. 46 (2008) 1994-(1998).

DOI: 10.1016/j.carbon.2008.08.013

Google Scholar

[12] D. Li, M.B. Muller, S. Gilje, R.B. Kaner, G.G. Wallace, Process able aqueous dispersions of graphene nanosheets, Net. Nanotechnol. 3 (2008) 101-105.

Google Scholar

[13] X. Luan, Y. Wang, Enhanced photocatalytic activity of graphene oxide-titania nanosheets composite for methylene blue degradation, Mater. Sci. Semicond. Process. 30 (2015) 592-598.

DOI: 10.1016/j.mssp.2014.10.032

Google Scholar