Journal
COMPOSITES PART B-ENGINEERING
Volume 173, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2019.106950
Keywords
Chitosan; Ramman; Silver nanoparticles; 4-Nitrophenol; Carbon matrix
Funding
- Deanship of Scientific Research at King Saud University [RG-1435-007]
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The fabrication of AgNPs into the N-doped carbon matrix with uniform dispersion and a strongly coupling interface is one of the main strategies to improve the catalytic activity of nanocomposite. Here, highly porous AgNPs embedded into the N-doped carbon (Ag/N-C) nanocomposite was fabricated using chitosan based hydrogel. The fabricated Ag/N-C was characterized using various analytical techniques (including SEM, TEM, XRD, BET, TGA and FT-IR, Ramman and XPS). The as-synthesized Ag/N-C nanocomposite with high specific surface area (875.2 m(2) g(-1)) and highly dispersed AgNPs exhibited adsorption properties and excellent catalytic activities for catalytic reduction of ecotoxic 4-nitrophenol (4-NP) to 4-Aminophenol (4-AP) under visible light. The adsorption of 4-NP was fast since equilibrium was reached in 40 min. The kinetic data were fitted well to the pseudo-second-order kinetic model. The results reveal that within 40 min 98% of 4-NP was successful reduced in to 4-AP suggesting an active catalyst. The post characterization results revealed that no chemical and physical changes were observed after seven successive cycles of the Ag/N-C nanocomposite. This work offers an indication of the future direction of synthesis of nanomaterials which could be adsorbed and treatment of the ecotoxic pollutants.
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