What is it about?
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. For comparison, chemical graphite oxide (GO imp) was synthesized. The pristine and final products were characterized by SEM-EDX, particle size distribution, elemental analysis, surface area, DTA-TG and Raman spectra. Oxygen/carbon ratios of the mechanochemical and chemical routes were detected by EDX and confirmed using elemental analysis. The surface area increased from ~1 up to 666 and 328 m2 g−1 for graphite flakes and graphite powder at 24 h of mechanochemical treatment, respectively. However, the surface area for GO imp reached 157 m2 g−1. 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.
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Why is it important?
Green Chemistry, Material Science, Treatment
Perspectives
New perspectives for graphite oxide.
Dr. Alaa El Din Mahmoud
Alexandria University, Faculty of Science
Read the Original
This page is a summary of: Mechanochemical versus chemical routes for graphitic precursors and their performance in micropollutants removal in water, Powder Technology, April 2020, Elsevier,
DOI: 10.1016/j.powtec.2020.02.073.
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