Preparation of Sonocatalyst Fe2O3/ZnO using Sol-gel/precipitation method: characterization and removal of acid orange 7 in aqueous solution / Nur Fadzeelah A. K. and Nor Aimi Abdul Wahab

A. K., Nur Fadzeelah and Abdul Wahab, Nor Aimi (2017) Preparation of Sonocatalyst Fe2O3/ZnO using Sol-gel/precipitation method: characterization and removal of acid orange 7 in aqueous solution / Nur Fadzeelah A. K. and Nor Aimi Abdul Wahab. ESTEEM Academic Journal, 13. pp. 93-104. ISSN 1675-7939

Official URL: http://uppp.uitm.edu.my

Abstract

Fe2O3/ZnO composite catalyst was synthesized using a solgel/precipitation method. The synthesized samples were characterized by Xray diffraction (XRD), scanning elctron microscope (SEM) with energy dispersive X-tray spectroscopy (EDX) and Brunauer−Emmet−Teller (BET) method. The feasibility of Fe2O3/ZnO composite catalyst on the removal of Acid Orange 7 (AO7) solution was examined under an ultrasonic irradiation. The removal percentage of AO7 solution was monitored by UVvis spectrophotometer. The characterization results exhibited that the Fe2O3/ZnO composite catalyst was successfully prepared using the solgel/precipitation method. The loading of Fe2O3 particles on the surface of ZnO particles resulted in high surface area compared to ZnO catalyst. Performance wise, the highest removal percentage of AO7 solution for sonocatalytic activity (at 120 min) showed only 8.05% and 9.12% for ZnO catalyst and Fe2O3/ZnO composite catalyst, respectively. Thus, the poor removal of AO7 solution in sonocatalytic experiment using this composite catalyst indicating this catalyst is not a good potential as sonocatalyst in treatment of azo dyes. In addition, this study has revealed that Fe2O3/ZnO composite catalyst was superior to the adsorption activity in removing of AO7 from aqueous solution due to adsorption ability of Fe2O3.

Metadata

Item Type: Article
Creators:
CreatorsID Num. / Email
A. K., Nur Fadzeelahnurfadzeelah122@ppinang.uitm.edu.my
Abdul Wahab, Nor AimiUNSPECIFIED
Subjects: Q Science > QD Chemistry > Physical and theoretical chemistry
Q Science > QD Chemistry > Physical and theoretical chemistry > Theory of solution
Q Science > QD Chemistry > Physical and theoretical chemistry > Theory of solution > Supersaturated solutions. Crystallization, etc.
Divisions: Universiti Teknologi MARA, Pulau Pinang > Permatang Pauh Campus
Journal or Publication Title: ESTEEM Academic Journal
ISSN: 1675-7939
Volume: 13
Page Range: pp. 93-104
Official URL: http://uppp.uitm.edu.my
Item ID: 28824
Uncontrolled Keywords: Fe2O3/ZnO, AO7, sol-gel/precipitation, composite catalyst, sonocatalytic degradation
URI: http://ir.uitm.edu.my/id/eprint/28824

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