A smart nano-V2O5/ODA-coated mesh for a co-responsive photo-induced wettability transition and ROS generation for in situ water purification. Issue 37 (6th September 2018)

• Record Type: Journal Article
• Authors: Qu, Ruixiang; Zhang, Weifeng; Li, Xiangyu; Liu, Yanan; Shih, Tzungyu; Wei, Yen; Feng, Lin
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 37(2018)
• Page Start: 18003
• Page End: 18009
• Publication Date: 2018-09-06
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8ta07094f
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A smart nano-V2 O5 /ODA-coated mesh with co-responsive photo-induced wettability transition and ROS generation was fabricated. Abstract : A co-responsive material is successfully fabricated by coating nano-vanadium pentoxide/octadecylamine (nano-V2 O5 /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-V2 O5 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 V2 O5 -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.