TiO_2/N-琥珀酰壳聚糖复合材料的制备及表征  

Synthesis and Characterization of TiO_2/N-succinyl-chitosan Composite

作　　者：王玲[1] 李莎[1] 张爱平[1] 

机构地区：[1]山西医科大学药学院,山西太原030001

出　　处：《精细化工》2016年第3期277-282,共6页Fine Chemicals

基　　金：山西省自然科学基金(2015011012)~~

摘　　要：以N-琥珀酰壳聚糖与TiO2复合制备了TiO2/N-琥珀酰壳聚糖复合材料。采用透射电镜(TEM)、傅里叶红外光谱(FTIR)、紫外-可见光谱(UV-Vis)、X射线衍射(XRD)、粒径及Zeta电位分析对复合材料进行表征。结果表明,TiO2表面羟基与N-琥珀酰壳聚糖分子中的羟基、酰胺、羧基相互作用形成了稳定的复合材料;复合材料中TiO2晶型呈锐钛矿型;复合材料平均粒径为50nm,Zeta电位达39mV;紫外-可见光谱显示,复合材料的光响应范围拓宽到可见光区,且对光的吸收能力显著增强,但在模拟太阳光下其光催化效率较TiO2有所下降。TiO2/ N-succinyl-chitosan composite was prepared by compositing TiO2 and N-succinylchitosan. The composite was characterized by transmission electron microscopy（ TEM）,fourier infrared spectrum（ FTIR）,ultraviolet-visible spectra（ UV-Vis）,X-ray diffraction（ XRD）,particle size and Zeta potential analysis. The results showed that stable composite was formed by interaction of the surface hydroxyl groups of TiO2 with hydroxyl,amide and carboxyl groups of N-succinyl-chitosan. TiO2 of the composite was anatase. The average particle size of the composite was 50 nm and Zeta potential was 39 mV. Ultraviolet-visible spectra revealed that light response range of the composite was widened to visible region and the light absorption capacity significantly enhanced,but its photocatalytic efficiency was lower than TiO2 under simulated sunlight.

关 键 词：光敏剂 N-琥珀酰壳聚糖 TIO2 TiO2/N-琥珀酰壳聚糖复合材料 功能材料 

分 类 号：O649[理学—物理化学] O636.1[理学—化学]