铝源对介孔氧化铝结构和除As(Ⅴ)性能的影响  

The effect of aluminium source on the structure of mesoporous alumina and the performance of removing As(Ⅴ)

作　　者：韩彩芸[1] 杨柳[1] 刘航[1] 罗永明[1] 

机构地区：[1]昆明理工大学环境科学与工程学院,昆明650500

出　　处：《功能材料》2017年第7期7115-7119,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(21507051;U1402233);云南省自然科学基金资助项目(KKSY201422060);云南省教育厅资助项目(2014Y077)

摘　　要：基于介孔结构有利于吸附质的吸附,采用非离子表面活性剂P123为模板剂,分别用异丙醇铝、单一硝酸铝、硝酸铝和偏铝酸钠为铝源来合成介孔氧化铝,所得材料依次标记为MA-I、MA-N和MA-S,并就3个材料的除As(Ⅴ)性能进行比较研究。结果表明,3种铝源所得材料均为介孔结构的γ-Al_2O_3,BET表面积大小依次为MA-N(173m^2/g)<MA-S(252m^2/g)<MA-I(312m^2/g);所含的介孔数量依次为MA-I>MA-N>MA-S;它们对As(Ⅴ)的最大理论吸附容量依次为MA-I(36.42mg/g)>MA-N(24.92mg/g)>MA-S(10.50mg/g);影响介孔氧化铝吸附As(Ⅴ)的主要因素是吸附剂的介孔数量。Based on the previous result that meso-structure was in favor of uptakeadsorbate, nonionic surfactant Pluronic PI 23 was used as template to synthesizemesoporous alumina and the obtained samples were used as As （Ⅴ ） adsorbents in this study. Aluminium tri-isopropoxide, aluminium nitrate,the mixture of aluminium ni-trate and sodium meta-aluminate was employed as aluminium source, and the synthesized samples were marked as MA-I,MA-N and MA-S,respectively. From the characterization, the obtained three samples were all J- Al2O3 phase with mes O -st.ruct.ure. The BET surface area of these samples were in the order of MA-N （173 m2/ g）〈MA-S （252 m2/g）〈CMA-I （312 mVg）. The amount of mesoporous in the samples was in the order of MA-I 〉MA-N〉MA-S, which was consistent with their performance of uptake As（ Ⅴ ） from solution. The maxi- mumtheoretical adsorption capacity of MA-I, MA-N and MA-S is 36.42, 24.92 and 10.50 mg/g, respectively. Therefore, it can be deemed that the quantity of mesoporous of adsorbent was the key factor to influence the As （Ⅴ） uptake performance.

关 键 词：氧化铝 介孔 吸附 As(Ⅴ) 

分 类 号：TB332[一般工业技术—材料科学与工程]