Sains Malaysiana 40(8)(2011): 897–902

Catalytic Study on TiO₂ Photocatalyst Synthesised Via Microemulsion Method on Atrazine

(Kajian Pemangkinan Fotopemangkin TiO₂ Disintesis Melalui Kaedah Mikroemulsi

Terhadap Atrazina)

C. A. Ruslimie, Hasmizam Razali* & Wan M. Khairul

Department of Chemical Sciences, Faculty of Science and Technology

Universiti Malaysia Terengganu, 21030 Kuala Terengganu

Terengganu, Malaysia

Diserahkan: 3 Jun 2010 / Diterima: 11 November 2010

ABSTRACT

Titanium dioxide photocatalyst was synthesised by microemulsions method under controlled hydrolysis of titanium butoxide, Ti(O(CH₂)₃)CH₃. The synthesised TiO₂ photocatalyst was compared with Sigma-commercial TiO₂ by carrying out the investigation on its properties using scanning electron microscopy (SEM), x-ray diffraction (XRD) analysis and thermal gravimetric analysis (TGA). The photocatalytic activities for both photocatalysts were studied for atrazine photodegradation.

Keywords: Atrazine; microemulsions; photodegradation; TiO₂

ABSTRAK

Titanium dioksida telah disintesis melalui kaedah mikroemulsi hidrolisis terkawal titanium butoksida, Ti(O(CH₂)₃)CH₃. TiO₂ yang disintesis telah dibandingkan dengan TiO₂ Sigma-komersial berdasarkan kajian terhadap sifat fizikal dan kimianya dengan menggunakan mikroskop elektron imbasan (SEM), pembelauan sinar-X (XRD) dan analisis gravimetri terma (TGA). Aktiviti fotopemangkinan bagi kedua-dua fotomangkin telah dikaji dengan menjalankan fotodegradasi terhadap atrazina.

Kata kunci: Atrazina; fotodegradasi; mikroemulsi; TiO₂

RUJUKAN

Awitor, K.O., Rafqah, S., Geranton, G., Sibaud, Y., Larson, P.R., Bokalawela, R.S.P., Jernigen, J.D. & Johnson M.B. 2008. Photo-catalysis using titanium dioxide layers. J. of Photochemistry and Photobiology A: Chemistry 119: 250.

He, G., Li, X., Xiao, G., Liu, H. & Wang, M. 2009. Synthesis and morphology control of Zno nanostructure in microemulsions. Journal of Colloid and Interface Science 333: 465.

Hong S.-S., Lee, M. S., Lee, G.-D. & Ju, C.-S. 2005. Synthesis of TiO2 particles by reverse microemulsion method using nonionic surfactant with different hydrophilic and hydrophobic group and their photocatalytic activity.Catalysis Today 101: 283-290.

Janus, M. Tryba, B., Kusiak, E., Tsumura, T., Tayoda, M., Inagaki, M. & Morawski, A.W. 2008. TiO2 nanoparticles with high photocatalytic activity under visible light. Catal. Lett. 50: 177-183.

Lee, M.S., Park, S.S., Lee, C.-S.., Ju, C.-S. & Hong, S.-S. 2005. Synthesis of TiO2 particles by microemulsion method using nonionic surfactants with different hydrophilic and hydrophobic group and their photocatalytic activity. Catalysis Today 101: 283-290.

Li, G.L., Wang, G. H. & Hang, J.M. 1999. Synthesis of K2Ti6O13 whiskers by the method of calcinations of KF and TiO2 mixtures. Materials Research Bulletin 34: 2341-2349.

Li, L., Chu, Y., Liu, Y., Dong, L., Huo, L. & Yang, F. 2006. Microemulsion-based synthesis of BaCO3 nanobelts and nanorods. Material Letters 60: 2138-2142.

Li, X., He, G., Xiao, G., Liu, H. & Wang, M. 2009. Synthesis and morphology control of ZnO nanostructures in microemulsion. Journal of Colloid and Interface Sciences 333: 465-473.

Lu, C.-H., Wu, W.-H. & Kale, R.B. 2008. Microemulsion-medited hydrothermal synthesis of photocatalytic TiO2 powders. Journal Hazardous Materials 154: 649-654.

Lu, J., Bauermann, L.P., Gerstel, P., Heinrichs, U., Kopold P., Bill, J. & Aldinger, F. 2009. Synthesis and characterization of TiO2 nanopowders from peroxotitanium solutions. Materials Chemistry and Physics 115: 142-146.

Murugesan, V., Venkatachalam, N. & Palanichamy, M. 2007. Sol-gel preparation and characterization of nanosize TiO2: Its photocatalytic performance. Materials Chemistry and Physics104: 454-459.

Pu, Y., Jianzhang, F., Peng, F., Li, B. & Huang, L. 2007. Microemulsion synthesis of nanosized SiO/TiO2 particles and their photocatalytic activity. Chin J Catal. 28(3): 251-256.

Wang, J., Sun, J. & Bian, X. 2004. Preparation of oriented TiO2 nanobelts by microemulsion technique. Material Science and Engineering A 379: 7-10.

Wu, Z., Wang, H., Liu, Y. & Gu, Z. 2008. Photocatalytic oxidation of nitric oxide with immobilized titanium dioxide, TiO2 film synthesised by hydrothermal method. Journal of Hazard Material 151: 17-25.

Yesodharan, S. & Devipriya, S. 2004. Photocatalytic degradation of pesticide contaminants in water. Solar Energy Materials & Solar Cells 86: 309-348.

Zhanqi, G., Shaogui, Y., Na, T. & Cheng, S. 2007. Microwave Assisted Rapid and Complete Degradation of Atrazine using TiO2 Nanotube Photocatalyst Suspensions. Journal of Hazardous Materials 145: 424-430.

*Pengarang untuk surat-menyurat; email: mdhasmizam@umt.edu.my