Saldias, Cesar and Diaz Diaz, David and Bonardd, Sebastian and Soto-Marfull, Cristian and Cordoba, Alexander and Saldias, Soledad and Quezada, Caterina and Radic, Deodato and Leiva, Angel (2018) In situ preparation of film and hydrogel bio-nanocomposites of chitosan/fluorescein-copper with catalytic activity. CARBOHYDRATE POLYMERS, 180. pp. 200-208. ISSN 0144-8617, 1879-1344
Full text not available from this repository. (Request a copy)Abstract
Copper nanoparticles were introduced into chitosan/fluorescein (Ch/f) film and hydrogel matrices by immersion of the respective matrix into an aqueous solution containing the precursor metallic salt and further reduction in aqueous medium at 75 degrees C for 3 h under nitrogen (N-2) atmosphere. TGA was used to estimate the metallic content of Ch/f-Cu film and hydrogel nanocomposites. The prepared nanocomposites were proven to be effective as catalytic materials in the reduction of methylene blue (MB) employing N2H4 as reducing agent. In addition, rate constants of the reduction reaction using Ch/f-Cu film and hydrogel nanocomposites as catalysts were determined. The experimental results showed that the catalytic activity and order of reaction of the MB-N2H4 reduction system depended strongly on the type of nanocomposite used. Finally, the recyclability of the film and hydrogel nanocomposites as catalytic materials was also studied.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NOBLE-METAL NANOPARTICLES; METHYLENE-BLUE REDUCTION; SILVER NANOPARTICLES; GOLD NANOPARTICLES; GREEN SYNTHESIS; BIOMEDICAL APPLICATIONS; ORGANIC FRAMEWORKS; AQUEOUS REDUCTION; HIGHLY EFFICIENT; GRAPHENE OXIDE; Chitosan; Bionancomposites; Copper nanoparticles; Catalysis |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie Chemistry and Pharmacy > Institut für Organische Chemie > Arbeitskreis Prof. Dr. David Díaz Díaz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 19 Mar 2020 12:42 |
| Last Modified: | 19 Mar 2020 12:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/15195 |
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