Facile one-pot synthesis and characterization of nickel supported on hierarchically porous carbon

Journal Article · Fri Jan 15 04:00:00 EST 2016 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.09.006· OSTI ID:22584263

Kotbagi, Trupti V.; Hakat, Yasemin

Highlights: • Novel, inexpensive, one-pot, synthesis method for Ni on hierarchically porous carbon. • Disappearance of surfactant mesopores seen with incorporation of nickel. • Distribution of Ni nanoparticles on the hierarchically porous carbon support was studied by SEM. • Nickel nanoparticles were dispersed on macropore walls and not within carbon. - Abstract: Described is a novel, facile route for the synthesis of nickel supported on hierarchically porous carbon (Ni/HPC) using a one-pot co-gelation sol–gel method. Ni/HPC with varying nickel loadings (0.5, 1, 2.5 and 5 wt% Ni) were synthesized and the materials characterized by nitrogen physisorption, X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR) and Raman spectroscopies. The results show a three-dimensional network of disordered carbon with fine nickel nanoparticles of sizes ranging from 8 nm to 13 nm at 0.5 wt% Ni loading which gradually increased with increase in the Ni loading. The carbon structure was retained at the macropore level, but not at the mesoscale where the ordered mesopores were lost on nickel addition. The nickel nanoparticles were observed to grow on the surface of the ligaments. This may make them particularly suitable for low pressure Ni-catalyzed organic transformations e.g., hydrogenations, C–C coupling, C-heteroatom coupling, etc.

• OSTI ID: 22584263
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 73; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTROSCOPY
CARBON
COUPLING
FOURIER TRANSFORMATION
GELATION
HYDROGENATION
INFRARED SPECTRA
MICROSTRUCTURE
NANOPARTICLES
NANOSTRUCTURES
NICKEL
NICKEL ADDITIONS
POROUS MATERIALS
RAMAN SPECTROSCOPY
SCANNING ELECTRON MICROSCOPY
SOL-GEL PROCESS
SYNTHESIS
THREE-DIMENSIONAL LATTICES
X-RAY DIFFRACTION