title: Synthesis of HPMC stabilized nickel nanoparticles and investigation of their magnetic and catalytic properties.
abstract: Nickel nanoparticles synthesized from NiCl2·6H2O by hydrazine hydrate in mixed solvent of ethanol and water in the presence of hydroxypropylmethylcellulose (HPMC) as protective and stabilizing agents. The morphology and sizes of synthesized Ni nanoparticles were studied by field-emission-scanning-electron microscopy (FESEM). Structural properties of nanoparticles were examined by X-ray diffraction (XRD). The polymer stabilized Ni nanoparticles were characterized by Fourier-transform infrared (FTIR) spectroscopy. The magnetic measurement showed that the resultant Ni nanoparticles were ferromagnetic. Also, the saturation magnetization (MS), remanent magnetization (MR) and coercivity (MR) were observed to increase with decreasing temperature. The results of magnetic characterization showed that the magnetic properties of the HPMC stabilized Ni nanoparticles are quite different from those of the bared Ni nanoparticles. All the observed magnetic properties essentially reflected the very typical nanoparticle type nature. Consequently, the resulting Ni nanoparticles were found to be highly active and recyclable catalyst for Suzuki coupling reactions.
authors.affiliation: Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700009, India.
authors.forename: Dipanwita
authors.initials: D
authors.lastname: Maity
authors.forename: Md Masud Rahaman
authors.initials: MM
authors.lastname: Mollick
authors.forename: Dibyendu
authors.initials: D
authors.lastname: Mondal
authors.forename: Biplab
authors.initials: B
authors.lastname: Bhowmick
authors.forename: Swarup Kumar
authors.initials: SK
authors.lastname: Neogi
authors.forename: Aritra
authors.initials: A
authors.lastname: Banerjee
authors.forename: Sanatan
authors.initials: S
authors.lastname: Chattopadhyay
authors.forename: Sudipta
authors.initials: S
authors.lastname: Bandyopadhyay
authors.forename: Dipankar
authors.initials: D
authors.lastname: Chattopadhyay
mesh_terms: D002384:Catalysis; D060326:Chemistry Techniques, Synthetic; D006834:Hydrazines / Q000737:chemistry; D065347:Hypromellose Derivatives; D060328:Magnetic Phenomena; D053768:Metal Nanoparticles / Q000737:chemistry*; D008747:Methylcellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D009532:Nickel / Q000737:chemistry*; D010084:Oxidation-Reduction
chemical_list: D006834:Hydrazines; D065347:Hypromellose Derivatives; C022838:nickel chloride; D009532:Nickel; D008747:Methylcellulose
keywords: Hydroxypropylmethylcellulose; Magnetic material; Nickel nanoparticles; Suzuki coupling reaction