A simple method to ordered mesoporous carbons containing nickel nanoparticles

Abstract

A series of ordered mesoporous carbons containing magnetic Ni nanoparticles (Ni-OMCs) with a variety of Ni loadings was made by a simple one-pot synthetic procedure through carbonization of phenolic resin-Pluronic block copolymer composites containing various amount of nickel nitrate. Such composite materials were characterized by N 2 sorption, XRD, and STEM. Ni-OMCs exhibited high BET surface area, uniform pore size, and large pore volume without obvious pore blockage with a Ni loading as high as 15 wt%. Ni nanoparticles were crystalline with a facecenter-cubic phase and observed mainly in the carbon matrix and on the outer surface as well. The average particle size of Ni nanoparticles was dependent on the preparation (carbonization) temperature and Ni loading; the higher the temperature was used and the more the Ni was incorporated, the larger the Ni nanoparticles were observed. One of the applications of Ni-OMCs was demonstrated as magnetically separable adsorbents.

Synthesis, characterization, and catalytic application of highly ordered mesoporous alumina-carbon nanocomposites

“…Moreover, the framework composition can be continuously tuned over a wide range, creating a spectrum of materials with the same mesostructure but very different framework compositions, just like zeolites. In particular, this multi-component co-assembly process has shown great success in the synthesis of carbon-based nanocomposites with ordered mesostructures [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. For example, Zhao et al synthesized carbon-SiO 2 nanocomposites with interpenetrating networks using an evaporation-induced triconstituent co-assembly of resol phenol-formaldehyde resin (PF resin) oligomer, prehydrolyzed tetraethyl orthosilicate (TEOS), and triblock copolymer Pluronic F127, followed by carbonization [13].…”

Electrochemical sensor for lead(II) ion using a carbon ionic-liquid electrode modified with a composite consisting of mesoporous carbon, an ionic liquid, and chitosan

“…Various modified electrodes based on OMC were constructed for the detection of electroactive species [20,21]. OMC containing magnetic nanoparticles has also been prepared and demonstrated as magnetically separable adsorbents [22]. OMC with large pore sizes was applied to effectively dispose the wastewater containing bulky dye molecules [23].…”

Magneto Susceptible Adsorbents Obtained by Thermochemical Activation of Hydrolytic Lignin With Iron(iii) Hydroxide

“…Obtained adsorbents are magnetosusceptible (MSA) [1]. Development of such adsorbents passes extensively [2][3][4][5][6], but industrial production of MSA is still absent. Magnetic sorbents used in petroleum industry are not MSA, because they are macroporous materials, adsorbing oil spills by a mechanism of adhesion and with the help of capillary forces.…”

“…Following methods are used for obtaining MSA: -modification of activated carbon by magnetic nanoparticles [2]; -pyrolysis of synthetic polymers with Fe, Ni, Co salts [3,4,5];…”