钒酸铋颜料制备实验的改进——pH优化  

Improvement of Synthesis Experiment of Bismuth Vanadate Pigment by pH Optimization

作　　者：彭敏[1] 石建新[1] 王周[1] 李莲云[1] 陈鹏隆 PENG Min;SHI Jianxin;WANG Zhou;LI Lianyun;CHEN Penglong(School of Chemistry,Sun Yat-sen University,Guangzhou 510275,P.R.China)

机构地区：[1]中山大学化学学院,广州510275

出　　处：《大学化学》2018年第8期26-31,共6页University Chemistry

基　　金：2017年中山大学校级质量工程项目"重点教材建设项目"

摘　　要：使用改进的实验装置研究钒酸铋颜料制备实验中p H对产物的影响。X射线衍射分析结果表明,在选定实验条件下,产物为四方相为主的四方、单斜两相混合物。p H对钒酸铋颜色有重要影响。酸性条件下颜色偏深,为土黄色;碱性条件下为亮黄色,且p H越大,颜色越淡。推荐反应p H为9,此时产物颜色呈色调较好的亮黄色。The effects of pH on the synthesis experiment of BiVO4 pigment were studied with improved experimental installation.Under the selected experimental conditions,the product was a mixture of a tetragonal phase,which dominated and a monoclinic one.pH of reaction system had significant influence on product color.Under acidic condition,the product was dark khaki.Under basic condition,product presented bright yellow.The pH=9 reaction system was recommended,because the product had a better bright yellow tone.

关 键 词：钒酸铋 PH XRD 颜色 

分 类 号：G64[文化科学—高等教育学] O6-39[文化科学—教育学]