Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 101, Issue 1-2, Pages 137-143Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2010.09.022
Keywords
Hydrogel-templates; Flexible hydrogel-reactor; In situ nanoparticle formation; Hydrogel-reaction vessel; Hydrogel-nanocomposites; Co nanoparticles
Funding
- Scientific and Technological Research Council of Turkey [108T122]
- Turkish Academy of Science
Ask authors/readers for more resources
Bulk poly(2-acrylamido-2-methyl-1-propansulfonic acid) (p(AMPS)) hydrogels were prepared by irradiation of an aqueous solution of AMPS in the presence of crosslinker and photoinitiator. These p(AMPS) hydrogel networks were utilized for in situ cobalt nanoparticle synthesis by reduction of metal ions absorbed into the hydrogel network with a reducing agent, i.e., NaBH(4). TEM images confirmed that Co particles are about 100 nm in size. The hydrogel network with embedded Co nanoparticles was utilized as a catalyst in the reduction of 4-nitrophenol (4-NP) and 2-nitrophenol (2-NP) in aqueous media in the presence of an excess amount of NaBH4. The kinetics of the reduction reaction under different reaction conditions was investigated to determine the activation parameters. Activation energies are 27.8 kJ mol(-1) and 39.3 kJ mol(-1) for 4-NP and 2-NP, respectively. It was found that hydrogel-Co composites were 99% active after 5 days storage. (C) 2010 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available