Fig. 3From: Adsorptive removal of levofloxacin and antibiotic resistance genes from hospital wastewater by nano-zero-valent iron and nano-copper using kinetic studies and response surface methodologySEM images of the adsorbents of levofloxacin by a CuONPs and b nZVI, UV?visible spectroscopy of c CuONPs and d nZVIBack to article page