We report a novel type of WO3 nanostructure, i.e. nanorolls obtained as a self-assembled thin film on a transparent conductive substrate. The mild conditions of preparation, avoiding the use of HCl, result in an eco-friendly hydrothermal method with reduced crystallization time. FESEM and HR-TEM show that WO3 nanocrystals are made of rolled nanoflakes with a telescope-like appearance at their tip. For their nano-porosity, electrochemical accessibility, good adhesion to substrates and the envisaged presence of nanocavities between the WO3 layers, these materials hold tremendous promise in nano-electronics, electrochromic devices, water photo-splitting cells, Li-ion batteries and nano-templated filters for UV radiation.
|Titolo:||WO3 nanorolls self-assembled as thin films by hydrothermal synthesis|
|Parole Chiave:||ENHANCED ELECTROCHROMIC PERFORMANCE; TUNGSTEN-OXIDE; NANOSTRUCTURES; GROWTH; INTERCALATION; TRIOXIDE; LITHIUM|
|Settore Scientifico Disciplinare:||Settore GEO/09 - Georisorse Miner.Appl.Mineral.-Petrogr.per l'amb.e i Beni Cul|
|Data di pubblicazione:||2015|
|Digital Object Identifier (DOI):||10.1039/c4nr07290a|
|Appare nelle tipologie:||01 - Articolo su periodico|