Synthesis and Characterization of Zno-Mno@C/Dot Nano Composites and Study Their Photo catalytic And Antimicrobial Activities.

Abstract

Due to their applications in, medicine, antibacterial and other fields, zinc oxide (ZnO) are among the nanoscale materials experiencing exponential growth. In contrast, bare ZnO have been reported to have a very large energy band gap, a large excitation binding energy, electron-hole recombination, no visible light absorption, and poor photo catalytic activities, which limit their potential uses. ZnONPs can be further extended through addition of transition metal oxides and incorporation of trace amounts of carbon materials to overcome these problems. We investigate the photo catalytic degradation of methylene blue (MB) dye and anti-bacterial activity with ZnONPs, ZnO-MnO@C.dot NCs materials. Consequently, adding 10% C-dot and 10%MnO to ZnO reduced their energy band gap from 2.93 to 2.507 eV and significantly increased their photo catalytic activity. MB was almost completely degraded (98.9%) after 60 min when 50mg of ZnO-MnO@ C.dot NCs were added.