Fabrication and characterization of WO3 flocky microspheres induced by ethanol

✍ Scribed by Yi Shen; Defang Ding; Yazhi Deng

• Book ID: 104089306
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 920 KB
• Volume: 211
• Category: Article
• ISSN: 0032-5910
• DOI: 10.1016/j.powtec.2011.04.005

✦ Synopsis

The novel tungsten trioxide flocky microspheres induced by ethanol were successfully obtained via a simple and convenient hydrothermal route. The as-prepared products were characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, BET surface area measurement and UV-Vis diffuse reflectance spectroscopy. WO 3 powder prepared with volume ratio (v ethanol /v water ) of 40% revealed a complete flocky microsphere structure with particle size of 3.0-4.0 μm and exhibited good photochromic property. The possible formation mechanism of the flocky microspheres was proposed and the improved photochromic properties were also investigated.