Synthesis of CoFe2O4@Pd/Activated carbon nanocomposite as a recoverable catalyst for the reduction of nitroarenes in water

• Published in: Journal of solid state chemistry Vol. 302; p. 122381
• Main Authors: Mohammadian, Sara, Hamadi, Hosein, Kazeminezhad, Iraj
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01.10.2021
• Subjects: Activated carbon; CoFe2O4; Magnetic nanocatalyst; Nitroarenes reduction; Pd nanocomposite; CoFe2O4; Pd nanocomposite; Activated carbon; Nitroarenes reduction; Magnetic nanocatalyst
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2021.122381

Efficient reduction of nitro compounds into amines is an important industrial transformation. So, it is a great deal to design new catalysts for efficient reduction of the nitro compounds especially in water. In this work, a new magnetic Pd/activated carbon nanocomposite (CoFe2O4@Pd/AC) was synthesized via metal-impregnation-pyrolysis method. The CoFe2O4@Pd/AC was fully characterized by FT-IR, PXRD, FESEM, TEM, VSM, EDX-mapping and BET techniques. The results showed that CoFe2O4@Pd/AC is a highly reactive and easily recoverable magnetic catalyst for the reduction of the nitro compounds by using NaBH4 in water. For instance, aniline was obtained in high yield (99%) after 75 ​min at 25 ̊C by using just 6 ​mg of the catalyst. In addition, CoFe2O4@Pd/AC was recovered by a simple magnetic decantation and it exhibits stable activity and remains intact during the catalytic process with no significant loss in activity (8 cycles). An efficient and highly recoverable magnetic Pd/activated carbon nanocomposite (CoFe2O4@Pd/AC) has been synthesized to be an excellent chemoselective recoverable catalyst for nitro-containing compound reduction in water. [Display omitted] •A new magnetic Pd/activated carbon nanocomposite (CoFe2O4@Pd/AC) has been synthesized via metal-impregnation-pyrolysis.•Highly reactive and easily recoverable magnetic catalyst for the reduction of the nitro compounds by using NaBH4 in water.•Excellent chemoselectivity in the nitroaryl compounds containing reducible functional groups.•Recoverable by simple magnetic decantation.