氨基化二氧化硅的制备及其对Pb2+的吸附研究  

Preparation of Amino-Functionalized Silica and its Adsorption Performance for Pb2+

作　　者：胡育[1] 宋连香[1] 刘素君[1] 李琼[1] 王应红[1] HU Yu;SONG Lian-xiang;LIU Sujun;LI Qiong;WANG Yinghong(College of Chemistry,Leshan Normal University,Leshan 614000,China)

机构地区：[1]乐山师范学院化学学院,四川乐山614000

出　　处：《西部皮革》2020年第7期37-39,共3页West Leather

基　　金：四川省科技厅重点研发项目(2017GZ0136);四川省教育厅项目17ZA197。

摘　　要：以多晶硅副产物水解制备的二氧化硅为原料,KH-550为改性剂,在乙醇中合成了氨基化二氧化硅。通过XRD、SEM、FTIR、原子吸收光谱法等表征方法对材料的结构、形貌和吸附性能进行分析。结果显示:二氧化硅经KH-550改性后,得到了氨基化二氧化硅,材料的分散性变好,对Pb2+的吸附效果有显著提高。25℃恒温振荡20 min,氨基化二氧化硅对Pb2+的吸附率达99.8%,比改性前提高了38.1%。Amino silica was synthesized from silica prepared by hydrolysis of polysilicon by-product and was modified by KH-550 in ethanol.The structure,morphology and adsorption properties of the materials were characterized with XRD,SEM,FTIR and atomic absorption speetrophotometry(AAS).The results showed that amino silica was obtained by modification of KH-550.The dispersibility of the materials was improved,and the adsorption properties of Pb2+was significantly improved.The adsorption rate of Pb2+on amino-silica reached 99.8%after 20 min oscillation at 25℃,which was 38.1%higher than the adsorption rate before modification.

关 键 词：二氧化硅 KH-550 PB2+ 吸附 

分 类 号：TQ424[化学工程]