Journal of Advances in Nanomaterials

Download PDF (815.7 KB) PP. 133 - 145 Pub. Date: September 20, 2017

DOI: 10.22606/jan.2017.23001

• Nidhi Shah
  Department of Polymer and Surface Engineering, Institute of Chemical Technology, Matunga, Mumbai - 400 019, India
• Karan Bhangaonkar
  
  Department of Polymer and Surface Engineering, Institute of Chemical Technology, Matunga, Mumbai - 400 019, India
• Dipak V. Pinjari
  
  Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai - 400 019, India
• Shashank T. Mhaske^*
  
  Department of Polymer and Surface Engineering, Institute of Chemical Technology, Matunga, Mumbai - 400 019, India

CeO₂/ZnO composite nanoparticles are synthesized by using in-situ precipitation method, without any stabilizers, via conventional i.e. non-ultrasound (NUS) and ultrasound-assisted processing technique (US). The structure, morphology, particle size and % weight loss of the synthesized nanoparticles were analyzed by using X-ray powder diffraction (XRD), Thermogravimetric Analysis (TGA), Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) to establish the formation of core shell type nanomaterials with an average particle size under 15 nm. The effectiveness of the synthesized core shell morphology of CeO₂/ZnO (catalyst) for the photocatalytic degradation of Rhodamine B (RhB) dye has also been investigated. It has been observed that the catalysts prepared by sonochemical method exhibit higher photocatalytic activity as compared to the catalysts prepared by the conventional method. It was also found that the ultrasound-assisted technique is an energy efficient method as it saves more than 80% of energy along with a substantial reduction in reaction time, as compared to conventional synthesis technique.

Sonochemical method, CeO₂/ZnO composite nanoparticles, Particle size, Dye degradation

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