Techniques of doping and implanting foreign metals on ZnO nanostructures to develop functional antibacterial agent have become a topic among researchers. Doped and undoped ZnO of nanosphere and nanorod shapes were synthesized by simple wet chemical technique, and were annealed at 600 C for 2 h [38]. The resultant ZnO samples were tested against three bacterial strains (E. coli, P. aeruginosa, and S. aureus). ZnO-doped samples exhibited considerably high activity toward S. aureus (skin bacteria) in comparison to E. coli and P. aeruginosa. It produced zone of inhibition of 4 % which was 37 % higher than that produced by undoped ZnO nanostructures. These results were beneficial for medical application. S. aureus is well known of causing contamination in hospital implants leading to serious infections [39]. ZnO is characterized by its antibacterial coatings, incorporation in skin creams, and UV protection. Therefore, coating hospital implants with 4 % of this doped ZnO nanostructures will be more effective in controlling associated bacterial infections. On the other hand, such doped ZnO can alternatively be used in skin lotions and in UV protection than undoped ZnO.
đang được dịch, vui lòng đợi..
