Preparation of zinc oxide-chitosan composite materials by liquid phase precipitation method and its antibacterial properties
QIN Guangchao
ZHANG Ningkun
WANG Haichen
YUE Li
LI Wanyuan
ZHENG Huihui
Abstract：Zinc oxide-chitosan(ZnO-CS)composite materials was synthesized by liquid phase precipitation method with zinc nitrate(Zn(NO3)2)as zinc source,CS as base and sodium hydroxide(NaOH)as stabilizer.X-ray photoelectron spectroscopy,infrared spectroscopy and ultraviolet absorption spectroscopy,the morphology,structural composition and the adsorption of ZnO on the surface of ZnO-CS composite materials were investigated by means of scanning electron microscopy,X-ray diffraction analysis,thermogravimetric analysis.The antibacterial properties of ZnO-CS composite materials were tested by applying ZnO-CS suspension on fresh ripe white rice.The results show that a rod-like ZnO particle film is first grown on the surface of Zn2+-CS.The amino group on the surface of CS is heated to form a cross-linked network with Zn2+ and ZnO,and rod-like ZnO is further grown to form sheet ZnO.ZnO is adsorbed by cross-linking network formed by amino group on CS surface,and ZnO-CS composite is obtained.The fresh ripe white rice treated with ZnO-CS suspension doesn't generate colonies at 6 d,and there is no obvious proliferation of colonies at 12 d,indicating that ZnO-CS composite materials has a good antibacterial property.
Keywords：zinc oxide-chitosan composite materialsliquid phase precipiation methodantibacterial property
Publication Date：2023-02-25
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：9( 98-106 )