中文摘要：

本文采用固体漫反射紫外扫描（DRS）、热重（TG）、差示热量扫描（DSC）和傅立叶变换红外光谱（FT-IR）等研究了焙烧温度对钨酸铋光催化剂结构的影响．研究表明：焙烧温度对钨酸铋光催化剂具有重要的影响．通过比较，钨酸铋光催化剂的适宜的焙烧温度为873K，其禁带宽度为2．75eV．该催化剂可在2h内使糖蜜酒精废水的色度催化降解89．4％．热分析表明，钨酸铋光催化剂的前驱体分解温度在473～573K，晶相形成温度在673～820K之间．催化剂的焙烧温度也影响其表面羟基的含量，873K焙烧的钨酸铋光催化剂表面富含羟基，而催化剂表面羟基含量直接影响催化剂生成具有强氧化能力的羟基自由基的能力，所以直接影响催化剂的催化活性。

英文摘要：

DRS,TG-DTA,DSC,FT-IR was used to study the effect of calcined temperature on Bi2WO6 structure. Result show that the calcined temperature has exerted a major influence on the structure of Bi2WO6. By contrast, the feasible calcined temperature of Bi2WO6 photocatalyst is 873 K, and the energy gap is 2.75 eV. The fermented molasses alcohol wastewater can be degraded to 89.4% in 2h by Bi2WO6. Thermal analysis shows that the decomposed temperature of Bi2WO6 precursor is 473-573 K, and crystalline phase formed from 673 K to 820 K. The hydroxyl content can be effect by the calcined temperature. FT-IR shows that catalyst surface full of hydroxyl at a calcined temperature of 873 K, and the surface hydroxyl content direct influence the ability of catalyst product hydroxy free radical which with strong oxidizing power,so it direct influence the catalytic activity of Bi2WO6 photocatalyst.