Efficient absorption of H2S by aluminum doped zinc oxide nanoparticles

In this study, hydrogen sulfide absorption of aluminum doped zinc oxide nanoparticles with different aluminum concentrations (ZnxAl1−xO) has been investigated. The gas absorption rate and the samples' structural evolutions have been also investigated by X-ray fluorescence and X-ray diffraction measurements. The morphologies and particles size distribution of samples have been determined by scanning electron microscope. The results showed that the Al doped samples have higher absorption rate in respect to the pure zinc oxide. The maximum absorption rate was obtained for the sample with x = 0.01. The average size of nanoparticles in this sample was 44 nm, which was also the lowest value among the other samples.

► Aluminum doped zinc oxide nanoparticles were tested for H2S absorption.
► Samples with different percentages of dopant were examined.
► H2S absorption of samples were tested in different temperatures.
► Best results were found for 0.01% of Al concentration.
► Superiority of Al doped ZnO nanoparticles respect to pure ZnO was approved.