Sustainable and low-cost technologies for carbon-based nanomaterials are required for wastewater treatment. Two graphitic precursors (graphite flakes and graphite powder) were tested to synthesize graphene-related materials using mechanochemical treatment.The removal of methylene blue, acid orange 7 and bisphenol A with the mechanochemical synthesized graphite oxides reached >93.8% at 30 min. The adsorption mechanism is mainly governed by π − π interactions and hydrogen bonding.
A simple and sustainable route was successfully developed to prepare inexpensive mechanochemical synthesized graphene related materials with the absence of harsh chemicals. There are different types of graphite in the market. For instance, powders and flakes. Most literatures focused on the powder form. Therefore, using graphite flakes as a starting material in the mechanochemical route is a quite new prospective to study. The development of such inexpensive and effective adsorbents for micropollutants is an emerging issue that concern researchers, industrial sectors and decision makers on a national or international level.
Sustainable production is the key to our future. Dr. Alaa El Din Mahmoud, Envi. Sci. Dept., Alexandria Uni Dr Alaa El Mahmoud, PhD
Mechanochemical route is a sustainable route compared to the chemical route.
Effect of the mechanochemical route is higher for graphite flakes than graphite powder.
Mechanochemical adsorbents showed higher uptake capacities for micropollutants.
Adsorption mechanism is attributed to π − π interactions and hydrogen bonding.