Malaysian Journal of Analytical Sciences Vol 19 No 4 (2015): 649 - 657

 

 

 

PHOTODEGRADATION OF REACTIVE GOLDEN YELLOW R DYE CATALYZED BY EFFECTIVE TITANIA (TiO₂)

 

(Fotodegradasi Pewarna Reactive Golden Yellow R Dimangkinkan oleh Titania (TiO₂) yang Efektif )

 

Edmand Andrew Bedurus¹*, Marinah Mohd Ariffin¹, Mohd Hasmizam Razali²

 

¹School of Marine and Environmental Sciences,

²School of Fundamental Sciences,

Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu

 

*Corresponding author: edmand_andrew@yahoo.com

 

 

Received: 8 February 2015; Accepted: 11 June 2015

 

 

Abstract

In the present research, Microwave Assisted Synthesis (MAS) method was applied to synthesize titania (TiO₂) at 150 ^oC in a range of 2-6 hours heating time. Each prepared TiO₂ were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and nitrogen gas (N₂) sorption analysis (Brunaeur-Emmett-Teller (BET) and Barrett-Joyner-Halenda (BJH) calculation) techniques. The TiO₂ prepared by MAS 150 ^oC (4 hours) has emerged with the highest photocatalytic activity. Within 4 hours, the TiO₂ managed to catalyze the degradation of Reactive Golden Yellow R dye up to 98.51 %. This is because of the TiO₂ possessed high crystallinity of anatase phase, small crystallite size and high pore volume compared to other prepared TiO₂.

 

Keywords: Titania (TiO₂), Microwave Assisted Synthesis (MAS), Reactive Golden Yellow R dye, photo-degradation

 

Abstrak

Dalam kajian ini, kaedah Sintesis Bantuan Gelombang Mikro (MAS) telah digunakan untuk mensintesis titania (TiO₂) pada suhu 150 ^oC dalam tempoh masa pemanasan 2 ke 6 jam. Setiap TiO₂ yang disintesis telah dicirikan menggunakan teknik Mikroskopi Imbasan Elektron (SEM), Pembelauan Sinar-X (XRD), dan analisis serapan gas nitrogen (pengiraan menggunakan formula Brunaeur-Emmett-Teller (BET) dan Barrett-Joyner-Halenda (BJH)). TiO₂ yang disintesis dengan kaedah MAS pada suhu 150 ^oC (4 jam) mempunyai aktiviti fotokatalitik yang tertinggi. Dalam masa 4 jam, TiO₂ tersebut telah berjaya memangkinkan degradasi pewarna Reactive Golden Yellow R sebanyak 98.51 %. Hal ini adalah disebabkan oleh TiO₂ tersebut mempunyai fasa hablur anatase yang tinggi, saiz hablur yang kecil dan isipadu liang yang tinggi berbanding dengan TiO₂ yang lain.

   

Kata kunci: Titania (TiO₂), Sintesis Bantuan Gelombang Mikro (MAS), Pewarna Reactive Golden Yellow R, fotodegradasi

 

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