期刊
POWDER TECHNOLOGY
卷 366, 期 -, 页码 629-640出版社
ELSEVIER
DOI: 10.1016/j.powtec.2020.02.073
关键词
Mechanochemistry; Oxidation; Graphene; Treatment; Dyes; Phenolic compounds
资金
- German Academic Exchange Service (DAAD)
- Egyptian Ministry of Higher Education
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 similar to 1 up to 666 and 328 m(2) g(-1) for graphite flakes and graphite powder at 24 h of mechanochemical treatment, respectively. However, the surface area for GO imp reached 157 m(2) 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 pi - pi interactions and hydrogen bonding. (C) 2020 Elsevier B.V. All rights reserved.
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