Mg^(2+)和表面活性剂对碳酸锶晶型及其形貌的影响  

Effects of Mg^(2+) and Surfactant on Crystal Structure and Morphology of SrCO_(3)

作　　者：姚成立 刘筱璇 李红英 路艳珍 周欣梦 Yao Chengli;Liu Xiaoxuan;Li Hongying;Lu Yanzhen;Zhou Xinmeng(School of Chemistry and Chemical Engineering,Hefei Normal University,Hefei City,Anhui Province 230601)

机构地区：[1]合肥师范学院化学与化学工程学院,安徽合肥230601

出　　处：《黄河科技学院学报》2022年第2期83-88,共6页Journal of Huanghe S&T College

基　　金：安徽省高校省级自然科学基金项目(KJ2020A0099);国家级大创项目(202114098019);安徽省大创项目(S202014098051,S202014098054,S202014098055);合肥师范学院研究生导师专项科研项目(DSKY09,DSKY02);合肥师范学院引进高层次人才科研启动基金项目(2020rcjj26)。

摘　　要：在十二烷基硫酸钠和镁离子的诱导调节作用下,利用化学沉淀反应制备了碳酸锶固体。合成的样品分别利用XRD、FT-IR以及SEM进行了检测和表征,考察了十二烷基硫酸钠与镁离子对碳酸锶晶体和形貌的影响。最后通过紫外-可见分光光度计检测了碳酸锶样品对亚甲基蓝水溶液的光降解性能。实验结果表明:合成的碳酸锶晶型均为菱锶矿型;十二烷基硫酸钠作用下微粒可以定向互相聚集形成花束和花球状碳酸锶粒子,而十二烷基硫酸钠与镁离子协同作用下诱导合成了具有“囊状”特征碳酸锶。而且镁离子和十二烷基硫酸钠调节合成的碳酸锶对亚甲基蓝有着明显的催化降解效果。Strontium carbonate(SrCO_(3)) was prepared by chemical precipitation reaction under the induction of sodium dodecyl sulfate(SDS) and Mg^(2+) ions.The synthesized samples were characterized by XRD,FT-IR and SEM.The effects of SDS and Mg^(2+) on the crystal and morphology of strontium carbonate were evaluated.Finally, the photodegradation of SrCO_(3) to methylene blue was detected by UV-Vis spectrophotometer.The results showed that the crystal forms of SrCO_(3) were strontianite.Under the regulation of SDS,the particles could directionally aggregate with each other to form flower-like bundles and spherical SrCO_(3) particles, while bladder-like SrCO_(3) was induced by thesynergistic effect of SDS and Mg^(2+).Moreover, the synthesized SrCO_(3) regulated by Mg^(2+) and SDS had an obvious catalytic degradation effect on methylene blue.

关 键 词：碳酸锶 表面活性剂 形貌 光催化降解 

分 类 号：TQ426[化学工程]