Photocatalytic removal of hazardous dye from water using nanostructured WO₃
by M.A. Gondal, K. Hayat, Mazen M. Khaled, Z.H. Yamani, Shakeel Ahmed
International Journal of Nanoparticles (IJNP), Vol. 4, No. 1, 2011

Abstract: Nanoparticles of WO₃ were synthesised using precipitation method. A special photo-reactor was designed for water purification using local resources. Laser enhanced photo-degradation for efficient removal of poisonous substances like dye (alizarin yellow GG) present in waste water was carried out using as synthesised WO₃ by irradiating with a 355 nm radiation generated from third harmonic of Nd:YAG laser. The effect of initial concentration of dye, catalyst concentration, and laser light intensity on removal efficiency of dye was investigated. Almost 100% degradation was achieved using nanostructured WO₃ in short span of time which is not possible with microstructure WO₃ catalysts and using conventional custom made setups. To the best of our knowledge, this is a first study of its kind where laser and nano particles WO₃ have been utilised together for removal of the dye.

Online publication date: Fri, 13-Mar-2015

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