Aluminium doped ZnO nanostructures for efficient photodegradation of indigo carmine and azo carmine G in solar irradiation

Abstract Aluminium doped zinc oxide (AZO) nanomaterials (Al x Zn 1-x O) with fraction varying as 0.02 and 0.04 were synthesized using the auto-combustion method glycine a fuel. The catalysts characterized X-ray diffraction (XRD), UV–Visible Spectroscopy (UV–Vis), Raman spectroscopy, Photoluminescence (PL) High Resolution Transmission Electron Microscopy (HR-TEM). XRD results showed that materials possessed good crystallinity, while UV–VIS was employed to find band gaps of materials. used determine vibrational modes in nanoparticles, TEM analysis performed study morphology samples. Industrial effluents such indigo carmine azo G test photodegradation ability synthesised catalysts. Parameters effect catalyst loading, dye concentration pH studied. reduction crystallite size, gap increased lattice strain for 4% AZO primary reason degradation visible irradiation, degrading 97 99% equimolar concentrations 140 min. Al ZnO found be effective faster dyes compared pure presence natural sunlight.