Preparation of CuO nanopowders and their catalytic activity in photodegradation of Rhodamine-B

Shaabani B., Alizadeh-Gheshlaghi E., Azizian-Kalandaragh Y., Khodayari A.

ADVANCED POWDER TECHNOLOGY, cilt.25, sa.3, ss.1043-1052, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 25 Sayı: 3
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.apt.2014.02.005
  • Dergi Adı: ADVANCED POWDER TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1043-1052
  • Anahtar Kelimeler: Semiconductor, Chemical synthesis, Optical properties, Photocatalysis, Rhodamine-B, VISIBLE-LIGHT IRRADIATION, PHOTOCATALYTIC DEGRADATION, THERMAL-DECOMPOSITION, NANOWIRES, CU(OH)(2), CU2O, NANOPARTICLES, DISPERSIONS, TEMPERATURE, OXIDATION
  • Gazi Üniversitesi Adresli: Hayır

Özet

CuO nanopowders have been successfully synthesized in two different morphologies from same precursor using a facile gel to crystalline (reflux) and co-precipitation synthesis routes. SEM and TEM observations indicate that the morphology of the products depends on preparation technology, while XRD shows the formation of CuO nanocrystals with monoclinic crystal system in both cases. A comparison of morphological characterization of CuO nanopowders showed flower-like and aggregated nanoparticles in the form of clusters using reflux and co-precipitation techniques, respectively. Photocatalytic activity of the products in the aqueous solution of Rhodamine-B has been investigated under UV-light for a given time using UV-visible spectroscopy and the mineralization of organic substance was measured by total organic carbon (TOC) analysis. It was observed that the photocatalytic activity in the presence of flower-like CuO nanopowders was higher than that of observed with aggregated nanoparticles. Also the mechanisms for the formation of CuO nanopowders and the obtained results of photocatalytic degradation of Rhodamine-B are discussed. (C) 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.