四种Keggin型多酸纳米材料的制备及其吸附有机染料的性能  

Four Keggin-Based Nanomaterials: Synthesis and Adsorption of Organic Dyes

作　　者：纳森巴特[1] 陈维林[1] 刘竹君[1] 徐莎莎[1] 王恩波[1] 

机构地区：[1]东北师范大学化学学院多酸科学教育部重点实验室,长春130024

出　　处：《无机化学学报》2015年第9期1820-1826,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21201031);高等学校博士学科点专项科研基金新教师类资助课题(No.20120043120007);吉林省科技发展计划青年科研基金(No.201201072)资助项目

摘　　要：以4种Keggin型多酸作为原料(分别为H3PW12O40·36H2O(简写为PW12a)、H3PMo12O40·34H2O(简写为PMo12a)、H4Si W12O40·35H2O(简写为Si W12a)和H4Ge W12O40·40H2O(简写为Ge W12a)),采用表面活性剂智能化控制的软化学法制备了相应的4种Keggin型多酸纳米材料,分别为Ag3PW12O40·36H2O(简写为PW12b)、Ag3PMo12O40·34H2O(简写为PMo12b)、Ag4Si W12O40·35H2O(简写为Si W12b)和Ag4Ge W12O40·40H2O(简写为Ge W12b)。采用IR、UV-Vis、XRD和SEM表征多酸的结构和纳米粒子的形貌。在室内黑暗条件下,100 mg样品可在5 min内把20 mg·L-1的100 m L亚甲基蓝(MB)染料溶液脱色,使其变为接近无色,吸附效率最高可达96.3%,吸附效率大小为PMo12b>PW12b>Ge W12b>Si W12b。相同条件下,100 mg样品使20 mg·L-1的100 m L罗丹明B(Rh B)染料溶液30 min内脱色完全,脱色效率最高可达96.1%,吸附效率大小为PW12b>PMo12b>Si W12b>Ge W12b。说明该4种多酸纳米材料具有较高的吸附有机染料性能。Four Keggin-based nanomaterials （PMo12b, PW12b, SiW12b and GeW12b） were controllably prepared. The structure and the size of all the compounds have been characterized by IR, UV-Vis, XRD and SEM. Further investigations showed that four Keggin-based nanomaterials exhibited fast adsorption rate towards dye molecules. The adsorption efficiency of those compounds （100 mg） towards MB （100 mL of 20 mg.L-1） could reach up to 96.3% in the initial 5 rain under dark condition, the adsorption efficiency sequence is PMo12b〉pW12b〉GeW12b〉 SiW12b. And also, the adsorption efficiency towards RhB （100 mL of 20 mg-L-~）could reach up to 96.1% in 30 min under same conditions, the adsorption efficiency sequence is PW12b 〉PMo12b 〉SiW12b 〉GeW12b. All the investigations indicate that the four kind of POMs-nanomaterials present excellent adsorption properties of the organic dyes.

关 键 词：纳米材料 多金属氧酸盐 吸附 亚甲基蓝 罗丹明B 

分 类 号：O614.61[理学—无机化学]