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Title: High efficient ZnO nanowalnuts photocatalyst: A case study

Highlights: • Walnut-like ZnO nanostructures are synthesized through a facile hydrothermal method. • Morphologies and microstructures of the as-obtained ZnO products were investigated. • The photocatalytic results demonstrate that methyl orange (MO) aqueous solution can be degraded over 97% after 45 min under UV light irradiation. - Abstract: Walnut-like ZnO nanostructures are successfully synthesized through a facile hydrothermal method. The structure and morphology of the as-synthesized products were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The photocatalytic properties of ZnO nanowalnuts are investigated by photodegradating several organic dyes, such as Congo red (CR), methyl orange (MO) and eosin red aqueous solutions under UV irradiation, respectively. The results demonstrate that methyl orange (MO) aqueous solution can be degraded over 97% after 45 min under UV light irradiation. In addition, eosin red and Congo red (CR) aqueous solution degradation experiments are also conducted in the same condition, respectively. It showed that ZnO nanowalnuts represent high photocatalytic activities with a degradation efficiency of 87% for CR with 115 min of irradiation and 97% for eosin red with 55 min of irradiation. The reported ZnO products may be promising candidates as the photocatalysts in waste water treatment.
Authors:
 [1] ;  [2] ; ;  [3] ;  [4] ;  [3] ;  [1] ;  [3]
  1. College of Chemistry and Chemical Engineering, Mudanjiang Normal University, Mudanjiang 157011 (China)
  2. (China)
  3. College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025 (China)
  4. School of Basic Medical Sciences, Mudanjiang Medical University, Mudanjiang 157011 (China)
Publication Date:
OSTI Identifier:
22420610
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 59; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AQUEOUS SOLUTIONS; EOSIN; HYDROTHERMAL SYNTHESIS; IRRADIATION; METHYL ORANGE; MICROSTRUCTURE; MORPHOLOGY; NANOSTRUCTURES; PHOTOCATALYSIS; SCANNING ELECTRON MICROSCOPY; ULTRAVIOLET RADIATION; WASTE WATER; WATER TREATMENT; X-RAY DIFFRACTION; ZINC OXIDES