Low-Temperature Synthesis of -BiTa Photocatalyst by the Flux Method
Low-Temperature Synthesis of -BiTa Photocatalyst by the Flux Method
复制标题
DOI：
10.5402/2012/719087
复制
发表时间：
2012-11
期刊：
影响因子：
--
通讯作者：
K. Shimada;Chihiro Izawa;Tomoaki Watanabe
中科院分区：
文献类型：
--
作者：
K. Shimada;Chihiro Izawa;Tomoaki Watanabe
以Bi2O3B2O3为助熔剂，采用助熔剂法制备了低温相BiTaO4(α-BiTaO4)。根据以往的报道，α-BiTaO_4大多是通过固相反应合成的，需要在90 0℃加热48h以上。本研究采用熔剂法制备了α-BiTaO_4。用X射线衍射仪和扫描电子显微镜分析了不同反应条件对产物的影响。α-BiTaO4的粒径与反应温度、溶质浓度等反应条件有关。考察了制得的α-BiTaO4对苯酚的光催化降解活性。结果表明，助熔剂合成的α-BiTaO4比固相法合成的α-BiTaO4具有更高的光催化活性。
Low-temperature phase BiTaO4 (α-BiTaO4) was successfully synthesized by the flux method using Bi2O3-B2O3 as the flux. According to previous reports, α-BiTaO4 has been mostly synthesized via a solid state reaction, which requires heating at 900°C for more than 48 h. In this study, α-BiTaO4 was successfully synthesized in 4 h at 750°C using the flux method. The impact of varying reaction conditions on the products was analyzed by X-ray diffraction and a scanning electron microscopy analysis. The grain size of α-BiTaO4 was dependent on reaction conditions such as the reaction temperature and solute concentration. The photocatalytic activity of the obtained α-BiTaO4 was evaluated for the degradation of phenol. It was found that flux-synthesized α-BiTaO4 exhibited a higher photocatalytic activity than α-BiTaO4 synthesized using the solid state method.