纳米SiO_2表面改性及其对阿维菌素吸附性能的影响  

Effects of surface modification of SiO_2 nanoparticles on the adsorption of abamectin

作　　者：刘琪[1] 崔海信[1] 孙长娇[1] 黎汉生[2] 顾微[1] 林春梅[1] 

机构地区：[1]中国农业科学院农业环境与可持续发展研究所,北京100081 [2]北京理工大学化工与环境学院,北京100081

出　　处：《农药学学报》2010年第1期101-104,共4页Chinese Journal of Pesticide Science

基　　金：国家高技术研究发展计划("863"计划)重大项目(2006AA10A203;2007AA21808-9);中央级公益性科研院所基本科研业务费专项资金

摘　　要：采用硅烷偶联剂KH-570对纳米SiO2进行了表面接枝改性,并探讨了改性材料对阿维菌素的吸附性能。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、傅立叶变换红外光谱(FTIR)等技术对表面改性纳米SiO2的结构和性能进行了分析。结果表明,纳米SiO2粒子经KH-570进行表面改性后,其分散性得以改善,对阿维菌素的包封率比改性前的大幅提高,提高率最高达92.6%。用KH-570改性的纳米SiO2可作为一种较为理想的新型生物农药载体。SiO2 nanoparticles were modified by silane coupling agent KH-570 and their effects on the adsorption capacity of abamectin were studied. The structure and physicochemical properties of silane modified SiO2 were characterized by XRD, SEM and PTIR. It was shown that SiO2 nanoparticles were modified by KH-570 successfully and dispersivity of the surface modified SiO2 nanoparticles was improved. As a result, SiO2 nanoparticles modified by KH-570 can be used as an ideal carrier for biological pesticides.

关 键 词：纳米SIO2 表面改性 阿维菌素 吸附 

分 类 号：TQ361.6[化学工程]