Duran, B. and Hevia, S. A. and Molero, L. and Isaacs, M. and Bonardd, S. and Diaz Diaz, D. and Leiva, A. and Saldias, C. (2019) Novel 3D copper nanoparticles/chitosan/nanoporous alumina (CCSA) membranes with catalytic activity. Characterization and performance in the reduction of methylene blue. JOURNAL OF CLEANER PRODUCTION, 210. pp. 811-820. ISSN 0959-6526, 1879-1786
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Herein, we report the surface modification of H2O2-treated nanoporous alumina (anodic aluminum oxide, MO) membranes with chitosan (CS) by a solution casting method. Later, copper nanoparticles were incorporated into this CS-AAO membrane by immersion in an aqueous solution of a copper salt precursor and subsequent reduction using NaBH4. The IR spectra and energy dispersive X-ray spectroscopy (EDS) analyses helped to confirm the presence of CS and copper nanoparticles both on the surface and inside the nanochannels of this AAO membrane (denoted CCSA). Notable differences in the surface energy, surface topography and morphology were observed between the CS-AAO and CCSA membranes. The catalytic performance of the CCSA membrane was tested in the reduction of methylene blue (MB).Our findings revealed that this system adequately combines the attractive properties of supporting of the AAO membranes, ion retention by CS and the catalytic activity of copper nanoparticles into a tridimensional array. Finally, the recyclability of the CCSA membrane was also assessed. The results showed that the performance of this membrane was not dramatically affected after four cycles of use. (C) 2018 Elsevier Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CORE-SHELL MICROSPHERES; GREEN SYNTHESIS; SILVER NANOPARTICLES; OXIDE NANOPARTICLES; ANODIC ALUMINA; HEAVY-METALS; C-S; CHITOSAN; REMOVAL; ARRAYS; Nanoporous membranes; Chitosan; Copper nanoparticles; Catalysis |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Arbeitskreis Prof. Dr. David Díaz Díaz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Apr 2020 05:26 |
| Last Modified: | 22 Apr 2020 05:26 |
| URI: | https://pred.uni-regensburg.de/id/eprint/27555 |
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