Chemical Science & Engineering Research
Title
Catalytic Reduction of p-Nitrophenol and Carbonyl Compounds by NiO-Nanoparticles Fastened Graphene Oxide
Authors
Somasundaram Saravanamoorthy,a Elayappan Vijayakumar,b Savariraj Jemimahc and Andivelu Ilangovan*a
aSchool of Chemistry, Bharathidasan University, Tiruchirappalli, Tamil Nadu - 620024, India.
bDepartment of Materials Science and Technology, Korea University, Seoul- 02841, South Korea
cDepartment of Chemistry, St. Joseph’s Institute of Technology, Chennai - 600119, India
*Corresponding Author Email Address : ilangovan@bdu.ac.in (Ilangovan)
Article History
Publishing details: Received: 19th July 2019, Revised: 31st July 2019, Accepted: 31st July 2019, Published: 01st August 2019
Cite this article
Saravanamoorthy S.; Vijayakumar E.; Jemimah S.; Ilangovan A. Catalytic Reduction of p-Nitrophenol and Carbonyl Compounds by NiO-Nanoparticles Fastened Graphene Oxide. Chem. Sci. Eng. Res., 2019, 1(1), 1-7.
Abstract
Owing to high activity and cost-effectiveness, NiO nanocomposites have been utilized in wide range of catalytic applications. In the present study, ultrafine NiO nanoparticles with average size of 7.5 nm were uniformly dispersed on graphene oxide by simple mix and heat method (Ni-oxide/GOSs). TEM and AFM results revealed the uniform dispersion of the Ni-oxide nanoparticles on the graphene oxide surface. Interaction between NiO nanoparticles and GO sheets were studied by Raman. SEM-EDS and XRD were used to study the Ni-loading and crystalline properties of Ni-oxide/GOSs. After being optimized, the Ni-oxide/GOSs catalyst was used for the reduction of 4-nitrophenol and carbonyl compounds. The reduction of 4-nitrophenol by Ni-oxide/GOSs was found to be very rapid and selective. An excellent kapp value of 60.8 ×10-3 min-1 was determined from the plots of ln[Ct/C0] versus reaction time for the reduction of 4-nitrophenol over 1.0 mg of Ni-oxide/GOSs. To our delight, the Ni-oxide/GOSs showed excellent activity in transfer hydrogenation of carbonyl compounds. Results confirmed that the Ni-oxide/GOSs catalyst is highly reusable in both reductions of 4-nitrophenol and carbonyl compounds.
Keywords
Graphene oxide; NiO-nanoparticles; Reduction; Nitrophenol; Carbonyl compounds