DUAL FUNCTIONAL ASYMMETRIC PLASMONIC STRUCTURES FOR SOLAR WATER PURIFICATION AND POLLUTION DETECTION. 

트린바통(Trinh Ba Thong)

This paper demonstrated an asymmetric plasmonic structure (APS) formed by selfassembly of close packed silver nanoparticles in to porous templates with dual function: Solar water purification and Pollution detection. The dark side of the APS with the broadband and efficient light absorption (solar absorptivity > 90%) and energy transfer efficiency ~80% can enable efficient solar steam generation. The shiny metallic side is enables a minimal detection concentration down to ~pM and maximal enhancement factor ~109. This dual functional APS also enable on- site pollution detection and water purification: contaminated water with various kind of common pollutants have been examined and purified. Purification and detection function show strong durability performance up to ~45 days, with < 20% decay in SERS intensity and < 10% decay in solar energy transfer efficiency. This APS is a promising structure for simultaneous water purification and on- site quality examination