Chitosan and Fe3O4 nanoparticles were used as raw materials,and chitosan magnetic nanomaterials were prepared by the reverse suspension crosslinking method.The nitrite adsorption rate was used to optimize the preparation process.The optimal preparation conditions obtained by response surface test were the synthesis temperature of 65℃,pH value of 9.40,and Fe3O4 addition amount of 0.29g.Under these conditions,the nanomaterial had an adsorption rate of 53.07% for nitrite.Infrared spectroscopy analysis showed that chitosan and Fe3O4 nanoparticles were successfully crosslinked.Through magnetic comparison,it was found that the nanomaterials had strong magnetic properties.The surface pores of the nanomaterials were observed under electron microscope,and the surface morphology of chitosan and Fe3O4 was obviously different.
Fu Jingyi, Liu Tong, Tang Qilong, Dou Xin, Zhao Jun
. Optimization and characterization of preparation process of chitosan magnetic nanomaterial[J]. New Chemical Materials, 2021
, 49(9)
: 259
-263
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.09.056
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