The on demand generation of hydrogen from Co-Ni bimetallic nano catalyst prepared by dual use of hydrogel: As template and as reactor

We report the preparation of metal nanoparticles in various formulations inside p(2-acrylamido-2-methyl-1-propansulfonic acid; p(AMPS)) hydrogels and their utilization as a catalyst in hydrolysis of NaBH 4. The swollen, flexible p(AMPS) network was used for metal ion loading and reduction in situ fo...

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Bibliographic Details
Published in:International journal of hydrogen energy 2011-11, Vol.36 (23), p.15250-15258
Main Authors: Sahiner, Nurettin, Ozay, Ozgur, Aktas, Nahit, Inger, Erk, He, Jibao
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Bimetals
Catalysts
Demand
Energy
Exact sciences and technology
Fuels
Hydrogel-reactor
Hydrogel-template
Hydrogels
Hydrogen
Hydrogen generation control
Hydrolysis
Magnetic soft composites
NaBH 4 hydrolysis
Nanoparticles
Nanostructure
Nickel
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Summary:We report the preparation of metal nanoparticles in various formulations inside p(2-acrylamido-2-methyl-1-propansulfonic acid; p(AMPS)) hydrogels and their utilization as a catalyst in hydrolysis of NaBH 4. The swollen, flexible p(AMPS) network was used for metal ion loading and reduction in situ for the preparation of Co:Ni nanoparticles as bimetallic clusters in various formulation, and Co and Ni bimetallic catalysts as Co + Co, Co + Ni, Ni + Co and Ni + Ni. In addition to utilization of hydrogels as support materials, the p(AMPS)-metal nanoparticle system was used as catalyst to generate hydrogen in the hydrolysis of NaBH 4 with very high yield. Various parameters for the hydrolysis reaction were determined and the activation parameters were calculated. For the first time, inclusion of ferrite magnetic particles to control hydrogen generation on demand by using an externally applied magnetic field to remove the hydrogel-catalyst system from the hydrolysis medium is reported. [Display omitted] ► Hydrogel assisted bimetallic nanoparticle synthesis. ► Hydrogel reactor for controllable hydrogen generation ► Environmentally benignsmart hydrogel composites ► Magnetically active versatile hydrogel soft reactors.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2011.08.082