Synthesis of CoFe2O4/C nano-catalyst with excellent performance by molten salt method and its application in 4-nitrophenol reduction

• Published in: Environmental Pollution 2019-11, Vol.254, p.112961-112961, Article 112961
• Main Authors: Zhao, Yunlong, Cao, Baoyong, Lin, Zhang, Su, Xintai
• Format: Article
• Language: English
• Subjects: 4-Aminophenol (4-AP); 4-Nitrophenol (4-NP); CoFe2O4/C nano-sheets; Potassium fulvate
• ISSN: 0269-7491; 1873-6424
• DOI: 10.1016/j.envpol.2019.112961

CoFe O /C nano-sheets (NSs) have been synthesized by a facile molten salt method using cheap potassium fulvate as carbon source and sodium chloride as template. The morphology, crystallinity and composition of the materials were analyzed by TEM, XRD and XPS. The study on the catalytic performance of 4-nitrophenol (4-NP) shows that CoFe O /C-600 nano-catalyst has the highest catalytic activity and the corresponding apparent constant is 1.91 min , this result is higher than that reported in most literatures. Catalytic kinetics of 4-NP reduction was studied in this article, and activation energy ( ) was calculated to be 14.31 kJ mol . The catalyst also shows good cycle performance and stability. This convenient method provides a reference for the synthesis of MFe O /C and other nano-metal oxides/C nanocomposite catalysts. CoFe O /C nano-sheets (NSs) have been successfully synthesized by a facile molten salt method using an inexpensive carbon source of potassium fulvate and sodium chloride as template. The CoFe O /C nano-catalysis with sheet structure exhibits high catalytic activity for reduction of 4-NP to 4-AP, especially, the CoFe O /C-600 nano-catalysts exhibit the highest 4-NP reduction catalytic activity and the corresponding apparent constant is 1.91 min . A facile method was provided for fabrication of MFe O /C composite, the material will be applied in other fields.