No abstract

No abstract

In recent years, broad interest has arisen for solar-driven evaporation, a promising technology for next-generation desalination and sewage treatment. Efficient photothermal materials are the keys in solar-driven evaporation systems, but they are usually involved in tedious preparation and easy damage. Herein, a magnet-dominated photothermal device (MPD) with spiny surface has been developed by the direct assembly of magnetic nanoparticles in action of magnetic field. Such one-step fabrication of photothermal layer avoids the use of harmful reagent and the consumption of pure water. The adjustable spiny morphology not only benefits to the light absorption via multiple reflection, but can facilely recover from damage. Water evaporation under solar irradiation can be accelerated by MPD to over 1.70 kg m À2 h À1 , and keeps stable in a long-term desalination. Without complex fabrication and high price, MPD could be considered as a rewarding attempt for the development of novel photothermal materials in water purification.

No abstract

The unmodified clay has been fully exfoliated in epoxy resin with the aid of a novel ultrafine full-vulcanized powdered rubber. Epoxy/rubber/clay nanocomposites with exfoliated morphology have been successfully prepared. The microstructures of the nanocomposites were characterized by means of X-ray diffraction and transmission electron microscopy. It was found that the unmodified clay was fully exfoliated and uniformly dispersed in the resulting nanocomposite. Characterizations of mechanical properties revealed that the impact strength of this special epoxy/rubber/clay nanocomposite increased up 107% over the neat epoxy resin. Thermal analyses showed that thermal stability of the nanocomposite was much better than that of epoxy nanocomposite based on organically modified clay.