Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, PR China.
Carbohydr Polym. 2013 Jul 1;96(1):15-20. doi: 10.1016/j.carbpol.2013.03.058. Epub 2013 Mar 26.
The purpose of this study was to explore a new strategy to improve the high value-added applications of biomass. Hybrid from cellulose and titanium dioxide (TiO2) was successfully prepared by using tetra-n-butyl titanate and cellulose solution via a hydrothermal method at 180°C for 24h. The phase, microstructure, morphology, and thermal stability of the hybrid were characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectrometry (FT-IR), thermogravimetric analysis (TGA), differential thermal analysis (DTA), and scanning electron microscopy (SEM). The influences of the tetra-n-butyl titanate concentration and the types of solvent on the products were investigated. The TiO2 nanoparticles were dispersed on the surface of cellulose and/or in the cellulose matrix. The hybrid possessed an antimicrobial activity against the model microbes Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive), and were a promising antimicrobial material for the applications in the biomedical field.
本研究旨在探索一种提高生物质高附加值应用的新策略。通过水热法在 180°C 下反应 24 小时，成功地利用四丁基钛酸酯和纤维素溶液制备了纤维素和二氧化钛（TiO2）的杂化材料。通过 X 射线粉末衍射（XRD）、傅里叶变换红外光谱（FT-IR）、热重分析（TGA）、差热分析（DTA）和扫描电子显微镜（SEM）对杂化材料的相、微观结构、形态和热稳定性进行了表征。考察了四丁基钛酸酯浓度和溶剂种类对产物的影响。TiO2 纳米颗粒分散在纤维素表面和/或纤维素基质中。该杂化材料对模型微生物大肠杆菌（革兰氏阴性菌）和金黄色葡萄球菌（革兰氏阳性菌）具有抗菌活性，有望在生物医学领域得到应用。
