Preparation of Bi2WO6 photocatalyst by high-energy ball milled Bi2O3-WO3 mixture. Issue 15 (15th November 2016)

• Record Type: Journal Article
• Authors: Zhang, Peng; Teng, Xiaoxu; Feng, Xianghua; Ding, Shimin; Zhang, Guoqing
• Is Part Of: Ceramics international. Volume 42:Issue 15(2016)
• Page Start: 16749
• Page End: 16757
• Publication Date: 2016-11-15
• Subjects: Photocatalyst -- Bi2WO6 -- Mechanochemical -- Rhodamine B; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.07.148
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Mechanochemical methods offer a simple and low-cost technique to synthesize nanomaterials. In this work, a new route for preparing Bi2 WO6 photocatalyst combining high-energy ball milling and solid-state reactions is explored. By using the mechanochemically-activated Bi2 O3 -WO3 mixture as a starting raw material, the preparation temperature of Bi2 WO6 is successfully reduced to 400 °C. The obtained Bi2 WO6 nanopowder as-well-as the mechanochemically-activated Bi2 O3 -WO3 mixture show a considerable photocatalytic activity for the decomposition of Rhodamine B. Bi2 WO6 nanopowders calcined at 400 °C exhibited a higher photocatalytic activity respect to powders calcined at a higher temperatures. The small amount of Bi2 O3 and WO3 contained in the optimized photocatalysts is thought to be helpful in establishing a complex ternary heterostructure system, allowing for an improved visible-light driven photocatalytic activity. Experimental results show that a combination of high-energy ball milling and solid-state reactions could be a promising technique for fabricating highly efficient photocatalysts.