钒酸铋黄色颜料的制备.PDF

大学化学(Daxue Huaxue) June Univ. Chem. 2016, 31 (6), 53－57 53 ∙化学实验∙ doi: 10.3866/PKU.DXHX201507004 钒酸铋黄色颜料的制备 ——推荐一个无机化学教学实验 王 周* 石建新 彭 敏 赖 瑢 李莲云 陈六平 ( 中山大学化学与化学工程学院，广州510275) 摘要：该实验以Bi(NO ) 和NH VO 为原料，采用液相沉淀法，制备钒酸铋黄色颜料。学生通过控制反 3 3 4 3 应物初始浓度、溶液pH、温度与时间等条件制备分散性良好、颗粒细小、组成均匀的钒酸铋。实验涉 及溶液配制、加热搅拌、简易回流、控温、调pH、检验、抽滤、洗涤、干燥等操作。钒酸铋是一种绿 色环保的黄色颜料，且具有降解污染物的光催化性能，因此，该实验不仅对于提高学生无机制备实验能 力具有很好的教学效果，还在实验教学中渗透了环保理念。 关键词：钒酸铋；黄色颜料；无机化学实验；绿色环保 中图分类号：O61 ；G64 Preparation of Bismuth Vanadate Yellow Pigment: an Inorganic Chemistry Experiment Recommended WANG Zhou* SHI Jian-Xin PENG Min LAI Rong LI Lian-Yun CHEN Liu-Ping (School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China) Abstract: The preparation of bismuth vanadate yellow pigment by the liquid-phase precipitation method using Bi(NO ) and NH VO as raw materials is recommended as an inorganic chemistry experiment. 3 3 4 3 Students are required to obtain small and uniform BiVO yellow pigment particles with good dispersity by 4 controlling the initial concentration of reactants, the pH of solution, the reaction temperature and duration. The experimental procedures involve solution preparation, heating, stirring, simple reflux, temperature and pH control, ion test, the suction filtration, washing and drying. Bismuth vanadate not only is a kind of green environmental protection yel