Polyacrylamide-based inorganic hybrid flocculants with self-degradable property
| Autor: | Li Xuan, Suo Biao, Ma Zhiyu, Xiwei Qi, Wang Bingzhu, Xinfang Wei, Zhu Bishan, Li Ye, Haiwang Wang, Zhao Tingjie, Li Mingzhi, Jun Yang, Tao Junshi |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Polyacrylamide Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Montmorillonite Chemical engineering chemistry Polymerization Bentonite Polymer chemistry Titanium dioxide General Materials Science Fourier transform infrared spectroscopy 0210 nano-technology Hybrid material |
| Zdroj: | Materials Chemistry and Physics. 192:72-77 |
| ISSN: | 0254-0584 |
| Popis: | Polyacrylamide (PAM)-based inorganic hybrid materials are of great potential as flocculants in soil-liquid separation. Herein, we reported the design of inorganic soil-TiO 2 -PAM hybrid materials using a unique process, which involved coating of titanium dioxide (TiO 2 ) nanoparticles on the surface of inorganic soils and subsequent polymerization of acrylamide (AM) on these nanoparticles under visible light. Inorganic soils including kaolin, bentonite, montmorillonite and diatomaceous earth were used to control the volume and to reduce the cost, and the TiO 2 nanoparticles accelerated PAM degradation. The nanoparticles initiated AM polymerization directly under visible light, thus providing a facile strategy for the synthesis of new organic-inorganic hybrid flocculants. The obtained hybrid materials were characterized using Fourier transform infrared spectroscopy and transmission electron microscopy. The degradation of PAM initiated by UV irradiation exceeded 24% in 2 h, depending on its initial concentration. |
| Databáze: | OpenAIRE |
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