不同电解质对溶胶碘化银聚沉作用的影响  

Study of Different Electrolyte Coagulation Effect of Silver Iodide Sol

作　　者：柏任流 晏静 罗小虎 贺银菊 Bai Renliu;Yan Jing;Luo Xiaohu;He Yinju(School of Chemistry and Chemical Engineering,Qiannan Normal University for Nationalities,Duyun 558000,China)

机构地区：[1]黔南民族师范学院化学化工学院,贵州都匀558000

出　　处：《云南化工》2021年第9期15-17,共3页Yunnan Chemical Technology

基　　金：黔南民族师范学院校级教改项目(2015应用化学专业综合改革试点);黔南民族师范学院校级教改项目(2017xjg0302);贵州省教育厅本科教学工程项目(2016SBJ0102);贵州省教育厅教学质量提升工程项目(2018520141)。

摘　　要：探究了不同的电解质对溶胶碘化银聚沉作用的影响,首先采用化学凝聚法来制备碘化银溶胶(正溶胶、负溶胶),并观察溶液的丁达尔效应。通过选择不同的电解质:KCl溶液、K_(2)SO_(4)溶液、CaCl_(2)溶液、FeCl_(3)溶液,发现对正溶胶起聚沉作用的是电解质中的负离子,且聚沉能力顺序为SO_(4)^(2-)>Cl^(-);对负溶胶起聚沉作用的是电解质中的正离子,且聚沉能力顺序为Fe^(3+)>Ca^(2+)>K^(+),完全符合哈迪-叔采(Hardy-Schulge)规律。This paper will explore the effects of different electrolyte coagulation effect of silver iodide sol,using chemical coagulation method to prepare silver iodide sol(positive and negative sol),Tyndall effect observation of solution.Select the KCl electrolyte solution,K_(2)SO_(4) solution,CaCl_(2) solution and FeCl_(3) solution of different conditions are found,poly effect on sol as the negative ion in the electrolyte and coagulation ability,on the order of SO_(4)^(2-)> Cl^(-) has negative sol coagulation effect is of positive ions in the electrolyte and coagulation ability leading order Fe^(3+)>Ca^(2+)>K^(+),fully in line with uncle Hardy mining(Hardy-Schulge) Rules.

关 键 词：电解质 碘化银溶胶 聚沉作用 丁达尔效应 

分 类 号：O648[理学—物理化学]