چكيده به لاتين
Abstract:
In this research, according to studies and available raw materials, activated carbon has been produced from almond shell under the chemical activation of phosphoric acid. Mesoporous activated carbon was prepared during a one stage process, and in this process, heat treatment was performed at a low temperature furnace method. Activated carbon was detected by scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FT-IR) and nitrogen adsorption isotherm (BET), X-ray diffraction (XRD). To investigate the absorption studies, (UV-Vis) spectroscopy was used. In this study, bismuth ferrite nanoparticles were synthesized in an easy and fast way in a 20-minute period by combustion method with the help of solid-state microwave waves. In order to prepare the bismuth ferrite nanoparticles, bismuth(III) nitrate pentahydrate, iron (III) nitrate nonahydrate with 1: 1 ratio, with glycine and ammonium nitrate, were used as fuel and oxidizing agent, respectively. In order to investigate the effect of time, microwave power and amount of fuel to oxidant ratio, several tests were performed and then the products were collected and identified. Also, the nanocomposite of the prepared activated carbon from almond shell and bismuth ferrite nanoparticles, AC/BiFeO3, was synthesized by wet method. The products were identified by FT-IR, XRD, SEM, VSM, EDX and BET methods. Then the absorption and degradation performance of these products was studied for removal of organic pollutants such as rhodamine B and methyl orange in water, and results showed better performance for AC/BiFeO3 composite and activated carbon compared to bismuth ferrite magnetic nanoparticles.
Keywords:
Mesoporous, Activated carbon, Bismuth ferrite nanoparticles, Nanocomposite, Photo degradation.
