Ionic Liquid-Based Route for the Preparation of Catalytically Active Cellulose–TiO2 Porous Films and Spheres
| Autor: | Alexandra Wittmar, Mathias Ulbricht |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Nanocomposite Materials science General Chemical Engineering Nanoparticle 02 engineering and technology General Chemistry Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Chemical engineering Ionic liquid Rhodamine B Organic chemistry Cellulose 0210 nano-technology Photodegradation |
| Zdroj: | Industrial & Engineering Chemistry Research. 56:2967-2975 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/acs.iecr.6b04720 |
| Popis: | The present work evaluates the possibilities of processing cellulose with ionic liquids and functional nanoparticles like TiO2 toward a new generation of porous nanocomposites, shaped as films or spheres, which may find direct application in water purification, catalysis, and self-cleaning materials. The focus was set on the factors controlling the formation of the porous film structure during the nonsolvent induced phase separation process from polymer solutions in ionic liquids via immersion in water and during the porous film drying step. Temperature and cosolvent addition facilitate cellulose solubilization and help control the phase separation by improving the mass transfer. The complex relation between the catalytic activity of the porous TiO2–cellulose nanocomposite materials obtained under different processing conditions and their structure has been studied during the photodegradation of model organic dyes like rhodamine B and methylene blue. After drying, the catalytic activity of the nanocomposi... |
| Databáze: | OpenAIRE |
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