Photocatalytic Activities of CdO-Fe₂O₃, CdO-CuFe₂O₄ and CdO-ZnFe₂O₄ Nanocomposites

Abstract:

Magnetically separable CdO-Fe₂O₃, CdO-CuFe₂O₄ and CdO-ZnFe₂O₄ nanocomposites have been prepared by precipitation method. The X-ray diffractogram shows face centered cubic CdO, cubic CdO₂, rhombohedral α-Fe₂O₃, orthorhombic β-Fe₂O₃, cubic γ-Fe₂O₃ and tetragonal FeOOH as the constituents of CdO-Fe₂O₃ composite. The components of CdO-CuFe₂O₄ composite are face centered cubic CdO, body centered tetragonal CuFe₂O₄ and cubic γ-Fe₂O₃. Face centered cubic CdO and ZnFe₂O₄, cubic γ-Fe₂O₃ and rhombohedral α-Fe₂O₃ are the constituents of CdO-ZnFe₂O₄ composite. The energy dispersive X-ray spectra confirm the presence of the corresponding elements and provide the composition. The scanning electron micrographs show that the composite particles are of spherical shape and of nanodimension. The composites absorb visible light. The charge transfer resistances of the composites are larger than their constituents. CdO-Fe₂O₃ and CdO-CuFe₂O₄ composites display ferromagnetic behavior. The visible light-photocatalytic activities and bactericidal activities of the composites are larger than their precursors.

• Periodical: Materials Science Forum (Volume 764)
• Pages: 206-218
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.764.206
• Online since: July 2013
• Authors: C. Karunakaran, A. Vijayabalan
• Keywords: Bacterial Disinfection, Nanoparticle, Semiconductor, Visible Light-Photocatalysis

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