کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
50209 | 46784 | 2015 | 4 صفحه PDF | دانلود رایگان |
• Surface modified δ-MnO2 was synthesized by a simple hydrothermal method.
• It exhibited high Fenton-like catalytic activity.
• The adsorbed C6H5–COO− on δ-MnO2 enhanced its catalytic activity.
Surface-modified δ-MnO2 with a hierarchical structure was synthesized via a hydrothermal redox reaction between toluene and KMnO4. Toluene is oxidized to produce benzoic acid which rapidly adsorbs onto the surface of δ-MnO2. The δ-MnO2 sample prepared with toluene exhibited a much higher catalytic activity for the Fenton-like oxidation of methylene blue in aqueous solution than that prepared without toluene. The enhanced catalytic activity might be attributed to the surface-bound persistent free radicals produced from the electron transfer from the adsorbed C6H5–COO− to Mn(IV).
Journal: Catalysis Communications - Volume 67, 5 July 2015, Pages 68–71