N-doped graphene aerogels as efficient heterogeneous catalytic activators for peroxymonosulfate to remove 2-sec-butyl-4,6-dinitrphenol (DNBP) in aqueous solution
Abstract:The nitrogen-doped graphene aerogels (NGAs) with interconnected hierarchical porous structures were facilely prepared via hydrothermal process in the mixed aqueous solution of ethylenediamine (EDA) and urea and post-freeze-drying treatment. A series of NGAs samples with different GO:urea: EDA mass ratios were obtained and characterized by Raman, FT-IR, XPS, TEM and SEM. The prepared NGAs were employed as metal-free carbocatalysts in the activation of peroxymonosulfate (PMS) for 2-sec-butyl-4,6-dinitrphenol (DN… Show more
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