Novel synthesis of highly catalytic active Cu@Ni/RGO nanocomposite for efficient hydrogenation of 4-nitrophenol organic pollutant

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Krishna, R (Author) Other; Diana M Fernandes (Author) FCUP; ventura, j. (Author) FCUP; Cristina Freire (Author) FCUP; Titus, E (Author) Other

Journal

Title: International Journal of Hydrogen Energy

Vol. 41

Pages: 11608-11615

ISSN: 0360-3199

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 47 Citations

Scopus - 49 Citations

Other information

Authenticus ID: P-00K-SYQ

DOI: 10.1016/j.ijhydene.2015.12.027

Abstract (EN): A novel method for the synthesis of non-noble metal based catalyst, copper-nickel-reduced graphene oxide (Cu@Ni/RGO) is established using two step methodology. First, the Ni/RGO nanocomposite was synthesized by the simultaneous reduction of Ni2+ ions and graphene oxide (GO) under reducing conditions, and after that Cu nanoparticles (Cu NPs) were encapsulated on them. We discuss the role of in-situ generated hydrogen radical (H-.) through spillover of H-2 on Ni/RGO which led the formation of crystalline Cu NPs, easily. The structure, composition and morphology of Cu@Ni/RGO nanocomposite were characterized by several related techniques. Further, we explored the practical application of non-noble metal based catalyst Cu@Ni/RGO for catalysis reaction due to its high catalytic performance towards reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). It showed a remarkable high activity 90 s at room temperature (RT) with excellent stability up to 5 cycles.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8