Abstract
Zn0.94Cu0.04Cr0.02O nanoparticles have been synthesized by sol–gel method and annealed at 400, 600 and 800 °C. Hexagonal wurtzite structure was not affected by the temperature but single phase was altered by high temperature (800 °C). The reduced crystallite size (19.9 nm) at 600 °C was due to the proper substitution of doping element. The enhanced crystallite size at 800 °C was due to the formation secondary phase like CuO and defect states. The broad absorption peak at 800 °C around visible region represented the oxygen related defects and Cu/Cr interstitials. The red shift of band gap and enhanced visible light absorption are useful for solar applications. Better antibacterial efficiency of nanoparticles annealed at 600 °C was due to increase of surface area by reduced particle size and modification in morphology.
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The authors are thankful to the Tamilnadu State Council for Higher Education (TNSCHE), Chennai, India, for financial support under the project [No. D.O.Rc. No. 1098/2013 A].
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Sivaselvan, S., Muthukumaran, S. Microstructure, Tuning of Band Gap, Enhanced Green Band Emission and Antibacterial Studies of Cu, Cr Dual Doped ZnO Nanoparticles by Annealing Temperature. J Inorg Organomet Polym 26, 950–961 (2016). https://doi.org/10.1007/s10904-016-0420-9
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DOI: https://doi.org/10.1007/s10904-016-0420-9