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.
