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Shubha, P., Namratha, K., Jit Chatterjee, M.S., Mustak, B. and Byrappa, K. (2017) Use of Honey in Stabilization of ZnO Nanoparticles Synthesized via Hydrothermal Route and Assessment of Their Antibacterial Activity and Cytotoxicity. Global Journal of Nanomedicine, 2, Article ID: 555585.

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• TITLE: Comparative Study on the Effects of Surface Area, Conduction Band and Valence Band Positions on the Photocatalytic Activity of ZnO-MxOy Heterostructures

  AUTHORS: Mysore Byrappa Nayan, Krishnegowda Jagadish, Mavinakere Ramesh Abhilash, Keerthiraj Namratha, Shivanna Srikantaswamy

  KEYWORDS: Metal Oxide Heterostructures, ZnO-MxOy Nanocomposites, Hydrothermal Synthesis, Solar-Driven Photocatalysis, Phenol Degradation

  JOURNAL NAME: Journal of Water Resource and Protection, Vol.11 No.3, March 28, 2019

  ABSTRACT: ZnO-MxOy heterostructures (M=Co, Mn, Ni, or In) are fabricated via hydrothermal synthesis method. X-ray diffraction and Fourier-transform infrared spectroscopy analyses endorse the successive formation of the various heterostructures. Field Emission Scanning electron microscope and Brunauer-Emmett-Teller (BET) surface area studies confirm the porous nature of the heterostructures obtained. The band gaps of various heterostructures are calculated that, 3.1, 2.71, 2.64, and 2.19 eV for ZnO-NiO, ZnO-In2O3, ZnO-Co3O4, and ZnO-MnO2, respectively. The photocatalytic activities of the fabricated heterostructures are investigated through the degradation of phenol under direct sunlight irradiation. The results show that the photocatalytic activity is affected by the conduction band (CB) and valence band (VB) positions rather than surface area of ZnO-MxOy heterostructure nanocomposites.