双十二烷基二甲基溴化铵改性蒙脱土及其对农药啶虫脒的吸附

doi:10.13218/j.cnki.csdc.2015.06.006

Abstract

Abstract: In order to improve loading performance for adsorption of organic pesticide acetamiprid on sodium montmorillonite (Na-MMT),the latter was modified by surfactant didodecyldimethylammonium bromide (DDAB) via the cation exchange mode,using ultrasonic-high-speed shearing method to promote its intercalation reaction.Then,the structure and properties of the modified montmorillonite were characterized and determined by means of X-ray diffractometer (XRD),Fourier transform infrared spectrometer (FTIR),thermogravimetric analysis (TG),transmission electron microscopy (TEM) and Raman spectroscopy (Raman).Experimental results showed that the DDAB has been successfully intercalated into the montmorillonite interlayer,significantly increasing its interlayer spacing.Pesticide adsorption test result showed that the modified montmorillonite displays better loading performance for adsorption of acetamiprid.

Key words: didodecyldimethylammonium bromide, sodium montmorillonite, modification

CLC Number:

TQ423.12

ZHANG Yong-li, LI Jia-cheng, FENG Yu-hong, YAN Hui-qiong, XIANG Fei, CHEN Xiu-qiong. Didodecyldimethylammonium bromide modified montmorillonite and adsorption of pesticide acetamiprid on it[J].China Surfactant Detergent & Cosmetics, 2015, 45(6): 323-327.

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Didodecyldimethylammonium bromide modified montmorillonite and adsorption of pesticide acetamiprid on it

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