Chitosan aerogel containing silver nanoparticles: From metal-chitosan powder to porous material |
| |
| Affiliation: | 1. State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, Shandong Province 266042, PR China;2. College of Materials Science and Engineering, Northeast Forestry University, Harbin, Heilongjiang province,150040, PR China;3. Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong province, 266101, PR China;4. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an, Shanxi province, 710021, PR China;1. Institute of Chemistry Far Eastern Branch of the Russian Academy of Sciences, 159, prosp.100-letiya Vladivostoka, Vladivostok 690022, Russia;2. Far Eastern Federal University, 8, Sukhanova St., Vladivostok 690950, Russia;3. Institute of Automation and Control Processes Far Eastern Branch of the Russian Academy of Sciences, 5, Radio St., Vladivostok 690041, Russia;1. A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991 Russia;2. Faculty of Physics, Moscow State University, Moscow 119991 Russia;3. Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences, Moscow 119333 Russia;4. National Research Centre Kurchatov Institute, Moscow 1123182, Russia |
| |
| Abstract: | The work presents a synthetic approach that combines methods of metal vapor synthesis (MVS), gelation and supercritical drying in order to obtain chitosan aerogels containing silver nanoparticles. On the first stage, two types of silver organosols were prepared via the eco-sustainable MVS method. Then the prepared silver organosols were used to modify chitosan powders for producing metal-chitosan powder composites. Gelation of the powder composites was performed in oxalic acid at elevated temperatures. Supercritical drying of the gels was implemented in order to preserve the formed porous structures. Thus, the chitosan powders modified with MVS-produced silver nanoparticles were used to prepare metal-chitosan aerogels. Characterization of the structure and the morphology of both powder and aerogel silver-chitosan composites was conducted by means of low temperature nitrogen adsorption, X-ray photoelectron spectroscopy, X-ray powder diffraction, small-angle X-ray scattering, SEM and TEM. Changes in the structure and morphology of silver nanoparticles between powder and aerogel composites were analyzed. |
| |
| Keywords: | Chitosan Aerogel Metal vapor synthesis Silver nanoparticles |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
