等离子体法控制硝酸铜晶体形貌  

Effects of DBD plasma on morphological control of Cu(NO_3)_2·3H_2O crystallization from aqueous solution

作　　者：李艳[1] 刘昌俊[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《化工学报》2010年第10期2754-2757,共4页CIESC Journal

基　　金：国家自然科学基金项目(20990223)~~

摘　　要：Dielectric-barrier discharge (DBD) is a typical non-equilibrium gas discharge with AC at low temperature and atmospheric pressure.In this paper the influence of DBD plasma on the crystallization of Cu(NO3)2· 3H2O is investigated.The experimental results show that DBD plasma has great influence on inducing the primary nucleation thus greatly reducing the nucleation time.Moreover,by applying DBD plasma,the morphology of Cu(NO3)2·3H2O was controlled during crystallization.In crystallization without DBD treatment,quadrilateral Cu(NO3)2·3H2O crystals were preferentially produced.However,if DBD plasma was applied during the nucleation process,the typical quadrilateral forms of crystal seeds transform to hexagonal crystals.The hexagonal crystals can grow to either hexagonal prism without further DBD plasma treatment or unique contact-twinned shaped hexangular star form under the environment of DBD plasma.Dielectric-barrier discharge （DBD） is a typical non-equilibrium gas discharge with AC at low temperature and atmospheric pressure.In this paper the influence of DBD plasma on the crystallization of Cu（NO3）2· 3H2O is investigated.The experimental results show that DBD plasma has great influence on inducing the primary nucleation thus greatly reducing the nucleation time.Moreover,by applying DBD plasma,the morphology of Cu（NO3）2·3H2O was controlled during crystallization.In crystallization without DBD treatment,quadrilateral Cu（NO3）2·3H2O crystals were preferentially produced.However,if DBD plasma was applied during the nucleation process,the typical quadrilateral forms of crystal seeds transform to hexagonal crystals.The hexagonal crystals can grow to either hexagonal prism without further DBD plasma treatment or unique contact-twinned shaped hexangular star form under the environment of DBD plasma.

关 键 词：介质阻挡放电等离子体 结晶 形貌控制 

分 类 号：TQ026.5[化学工程]