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Photocatalytic Degradation of 3-Nitrophenol with ZnO Nanoparticles under UV Irradiation

  • Li, Jiulong (Department of Chemistry, Sahmyook University) ;
  • Ko, Weon Bae (Department of Chemistry, Sahmyook University)
  • Received : 2017.05.22
  • Accepted : 2017.06.01
  • Published : 2017.06.30

Abstract

Zinc nitrate hexahydrate [$Zn(NO_3){\cdot}6H_2O$] and sodium hydroxide [NaOH] were used as source reagents in the preparation of ZnO nanoparticles in an aqueous solution containing deionized water and ethanol in a ratio of 2:5 (v/v). ZnO nanoparticles were heated in an electric furnace at $700^{\circ}C$ for 2 h under an atmosphere of inert argon gas. The morphological and structural properties of the nanoparticles were characterized by scanning electron microscopy (SEM) and powder X-ray diffractometry (XRD). UV-vis spectrophotometry was used to analyze the photocatalytic degradation of 3-nitrophenol with ZnO nanoparticles as photocatalyst under ultraviolet irradiation at 254 nm. Evaluation of the kinetic of the photo-catalytic degradation of 3-nitrophenol indicated that the degradation of 3-nitrophenol with ZnO nanoparticles obeyed the pseudo-first order reaction rate model.

Acknowledgement

Supported by : Sahmyook University

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