Journal
HELIYON
Volume 8, Issue 9, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.heliyon.2022.e10659
Keywords
Porous carbon; Nitrophenol; Silver nanoparticle; Catalytic reduction; Pollutant
Categories
Funding
- Scientific Research Projects Coordination Unit of K?r?kkale University
- [2019/109]
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A facile in situ approach to synthesize catalytically active Ag nanoparticles supported on eco-friendly asphaltene-derived porous carbon was reported. The Ag@APC nanocatalyst showed high catalytic efficiency in the reduction of nitrophenols and could be recycled for multiple runs.
Herein, a facile in situ approach to synthesize catalytically active Ag nanoparticles supported on eco-friendly asphaltene-derived porous carbon (APC) was reported. Asphaltene-derived porous carbon was used as support for the first time for Ag@APC to prevent nanoparticles from aggregation, and then was evaluated as catalyst for the reduction of 4-nitrophenol (PNP), 2,4-dinitrophenol (DNP), and 2,4,6-trinitrophenol (TNP). The synthesized Ag nanoparticles were characterized by XRD, UV, BET, FESEM, TEM, and ICP analyses, revealing the formation of uniformly distributed, fcc structured crystalline Ag nanoparticles with BET surface area varied between 1500 and 1723 cm-1 with a porous carbon surface. Ag@APC nanocatalyst showed high catalytic efficiency in the reduction of nitrophenols in the presence of NaBH4 under mild conditions. The reduction of PNP, DNP, and TNP have pseudo -first-order rate constants of 0.3340, 0.2570, and 0.2408 min-1, respectively. The catalyst could be recyclable and reused for at least five successive runs without losing its original activity.
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