Using graphene/TiO2 nanocomposite as a new route for preparation of electroconductive, self-cleaning, antibacterial and antifungal cotton fabric without toxicity
Using graphene/TiO2 nanocomposite as a new route for preparation of electroconductive, self-cleaning, antibacterial and antifungal cotton fabric without toxicity
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DOI：
10.1007/s10570-014-0385-1
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发表时间：
2014-10-01
期刊：
影响因子：
5.7
通讯作者：
Mirjalili, Mohammad
中科院分区：
文献类型：
--
作者：
Karimi, Loghman;Yazdanshenas, Mohammad Esmail;Mirjalili, Mohammad
报道了一种使用石墨烯/二氧化钛纳米复合材料制造可吸收、自清洁、抗菌和抗真菌纤维素纺织品的新颖且有效的方法。使用简单的浸渍涂覆方法将棉织物负载有氧化石墨烯。然后将氧化石墨烯涂覆的棉织物浸入作为还原剂和前体的TiCl 3水溶液中，以产生涂覆有石墨烯/二氧化钛纳米复合材料的织物。采用X射线衍射、场发射扫描电镜、透射电镜、X射线光电子能谱、傅里叶变换红外光谱、拉曼光谱和紫外-可见反射光谱对样品的晶相、形貌、微观结构等理化性能进行了表征。对整理后织物的电阻、自洁性能、抗菌活性和细胞毒性进行了评价。棉织物表面石墨烯的存在显着提高了石墨烯/二氧化钛纳米复合材料涂层织物的导电性。通过紫外光和太阳光照射下亚甲基蓝水溶液的降解测试了处理后织物的自清洁效率。结果表明，在织物的TiO 2处理中加入石墨烯，可以提高亚甲基蓝的降解率。此外，石墨烯/二氧化钛纳米复合物涂覆的棉样品具有可忽略的毒性，并且具有优异的抗微生物活性。
A novel and efficient process is reported for fabrication of electroconductive, self-cleaning, antibacterial and antifungal cellulose textiles using a graphene/titanium dioxide nanocomposite. Cotton fabric was loaded with graphene oxide using a simple dipping coating method. The graphene oxide-coated cotton fabrics were then immersed in TiCl3 aqueous solution as both a reducing agent and a precursor to yield a fabric coated with graphene/titanium dioxide nanocomposite. The crystal phase, morphology, microstructure and other physicochemical properties of the as-prepared samples were characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, Raman spectroscopy and UV-Vis reflectance spectroscopy. Electrical resistance, self-cleaning performance, antimicrobial activity and cytotoxicity of treated fabrics were also assessed. The electrical conductivity of the graphene/titanium dioxide nanocomposite-coated fabrics was improved significantly by the presence of graphene on the surface of cotton fabrics. The self-cleaning efficiency of the treated fabrics was tested by degradation of methylene blue in aqueous solution under UV and sunlight irradiations. The results indicated that the decomposition rates of methylene blue were improved by the addition of graphene to the TiO2 treatment on fabrics. Moreover, the graphene/titanium dioxide nanocomposite-coated cotton samples had negligible toxicity and possessed excellent antimicrobial activity.