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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。
The Nano-TiO2 / N-succinyl chitosan composite was prepared by compounding N-succinyl chitosan with TiO2. The composites were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), UV-Vis, X-ray diffraction (XRD) The results showed that the hydroxyl groups on the surface of TiO2 and the hydroxyl groups, amides and carboxyl groups in the molecule of N-succinyl chitosan formed a stable composite material. The TiO2 crystal form of the composite material was anatase. The average particle diameter of the composite material was 50 nm , And the Zeta potential reached 39mV. The UV-Vis spectra showed that the light response of the composites was broadened to the visible light region and the light absorption capacity was significantly enhanced. However, the photocatalytic efficiency of the composites was lower than that of TiO2 under simulated sunlight.