Morphologies controlled ZnO for inactivation of multidrug-resistant Pseudomonas aeruginosa in solar light.

The different morphology and size of the zinc oxide (ZnO) were synthesized by a co-precipitation process via variation of calcination temperature from 400 °C to 900 °C. The nanorod, flower, hexagon, pentagon, and microflambeau morphologies were obtained. The flower morphology of ZnO tends to inactivate multidrug-resistant Pseudomonas aeruginosa (P. aeruginosa) completely within 45 min under solar light irradiation better than other morphologies due to efficient separation electron-hole pairs. The prevention of charge recombination was confirmed by transient photocurrent response and electrochemical impedance spectra measurements. Electron spin resonance spectroscopy suggests that [Formula: see text] OH