The Malaysian Journal of Analytical Sciences Vol 14 No 1 (2010): 41 – 49

 

 

 

Effect of HTAB Concentration on THE SynthesIS OF nanostructured TiO₂ TOWARDS ITS Catalytic activities

 

(Kesan Kepekatan HTAB Terhadap Sintesis TiO₂ Nanostruktur Ke Atas Aktiviti Pemangkinannya)

 

Ruslimie C. A, Mohd Hasmizam Razali* and Wan M. Khairul

 

Department of Chemical Sciences, Faculty of Science and Technology,

Universiti Malaysia Terengganu, 21030, Kuala Terengganu,

Terengganu, Malaysia

 

*Corresponding author: mdhasmizam@umt.edu.my

 

Abstract

Titanium dioxide, TiO₂ photocatalyst was synthesised by microemulsion method under controlled hydrolysis of titanium butoxide, Ti(O(CH₂)₃)CH₃ in Hexadecyl Trimethyl Ammonium Bromide, HTAB. The effect of various concentrations of surfactant in the range between 0.01-1.0 M were focused on by investigating their morphology, crystallite size, crystalline phase and specific surface area. After observation on their degradation performance, 0.5 M concentration of HTAB presented as a optimum concentration to synthesis TiO₂ photocatalyst. These results also supported by XRD spectra which are exhibited size of photocatalyst in the range within 50-150 nm. As a result, the catalytic properties of the synthesised TiO₂ nanostructure was performed by exhibiting good behaviour in photocatalytically degraded atrazine, 2-chloro-4-(ethylamino)-6 (isopropylamino)-S-triazine to unharmful compounds in the environment.

 

Keywords: TiO­₂, microemulsion, photodegradation, atrazine.

 

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