毕业设计（论文）题目：纳米Al2O3对Th(Ⅳ)的吸附性能的探讨EnglishTitle:StudyonadsorbabilityofTh(Ⅳ)onHYPERLINK"javascript:showjdsw('jd_t','j_')"nano-alumina专业:应用化学学生姓名:彭真学号:05051217指导老师:周跃明二零零九年六月东华理工大学毕业设计（论文）摘要摘要采用溶胶-凝胶法制备纳米A12O3，光度法探讨纳米氧化铝对Th(Ⅳ)的吸附性能，考察了溶液pH值和盐效应等对吸附的影响。溶液酸度影响A12O3表面电位，从而影响Th4+的吸附，同时A12O3之间产生较强的排斥力；盐效应使Th(OH)4沉淀的溶解度增大，而Na+与Th4+竞争A12O3表面位，使A12O3的吸附减弱。结果表明，不加缓冲溶液控制pH3时Th4+的吸附效果最佳，测得纳米Al2O3对Th(Ⅳ)静态吸附容量为15.41mg/g，对于探讨纳米A12O3对放射性元素等的吸附有较大的意义。关键词：溶胶-凝胶法；纳米A12O3；吸附；Th(Ⅳ)；pH东华理工大学毕业设计（论文）ABSTRACTABSTRACTThenanometerA12O3powderswerepreparedbytheSol-Gelmethod.Theadsorptionbehaviorofnanometer-sizedaluminaonTh(Ⅳ)wasinvestigatedbyHYPERLINK"javascript:showjdsw('jd_t','j_')"spectrophotometry.SomeconditionssuchaspHvalueandsalt-effectonadsorptionbehaviorwerealsoexamined.SolutionacidityaffectedHYPERLINK"javascript:showjdsw('jd_t','j_')"surfacepotentialofalumina,thereby,affectedtheadsorptiontoTh4+,simultaneitybroughtstrongerrepulsiveforcebetweenalumina;salt-effectHYPERLINK"http://dict.cnki.net/dict_result.aspx?searchword=%e5%a2%9e%e5%a4%a7&tjType=sentence&style=&t=increased"increasedHYPERLINK"http://dict.cnki.net/dict_result.aspx?searchword=%e6%ba%b6%e8%a7%a3%e5%ba%a6&tjType=sentence&style=&t=the+solubility"thesolubilityofTh(OH)4,whilecompetitiveeffectsofNa+andTh4+onHYPERLINK"javascript:showjdsw('jd_t','j_')"surfacepotentialofaluminaHYPERLINK"http://dict.cnki.net/dict_result.aspx?searchword=%e5%87%8f%e5%bc%b1&tjType=sentence&style=&t=weakened"weakenedHYPERLINK"http://dict.cnki.net/dict_result.aspx?searchword=%e5%90%b8%e9%99%84%e8%83%bd%e5%8a%9b&tjType=sentence&style=&t=adsorbability"adsorbabilityofalumina.It’sshownthat:HYPERLINK"javascript:showjdsw('jd_t','j_')"thiscase,pHvaluewas3withouttheHYPERLINK"javascript:showjdsw('jd_t','j_')"buffersolution,shewthebestadsorbingeffect.ThestaticadsorptioncapacityofTh(Ⅳ)is15.41mg/g.ItHYPERLINK"http://dict.cnki.net/dict_result.aspx?searchword=%e6%9c%89%e4%b8%80%e5%ae%9a%e7%9a%84%e6%84%8f%e4%