A smart nano-V2O5/ODA-coated mesh for a co-responsive photo-induced wettability transition and ROS generation for in situ water purification
| Autor: | Ruixiang Qu, Tzungyu Shih, Yanan Liu, Xiangyu Li, Lin Feng, Yen Wei, Weifeng Zhang |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Microfluidics Portable water purification 02 engineering and technology General Chemistry engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Coating Chemical engineering Superhydrophilicity Nano engineering Pentoxide General Materials Science Chemical stability Wetting 0210 nano-technology |
| Zdroj: | Journal of Materials Chemistry A. 6:18003-18009 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/c8ta07094f |
| Popis: | A co-responsive material is successfully fabricated by coating nano-vanadium pentoxide/octadecylamine (nano-V2O5/ODA) onto a copper mesh via a hydrothermal reaction. “Co-response” means that a material can realize a multi-performance transition under one environmental stimulus. Nano-V2O5 provides the material with a photo-induced wettability transition and reactive oxygen species (ROS) generation properties, while ODA produces a superhydrophobic material in its initial state. As a result, this material can achieve a reversible superhydrophobic/superhydrophilic transition under 254 nm ultraviolet (UV) light. By combining the wettability transition with ROS generation properties, a smart mesh can realize in situ photo-controlled water purification, i.e., the controllable and simultaneous removal of the oil and soluble contaminants. An extra V2O5-coated mesh is used as an auxiliary mesh to improve the oil removal and ROS generation efficiencies. Moreover, the mesh exhibits satisfactory reusability and physical/chemical stability, which is more promising for practical applications such as remote controlled water purification, timed discharge of sewage and microfluidic valves. |
| Databáze: | OpenAIRE |
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