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机构地区:[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,浙江杭州310018 [2]浙江理工大学材料与纺织学院,浙江杭州310018
出 处:《纺织学报》2011年第4期23-28,共6页Journal of Textile Research
基 金:浙江省自然科学基金资助项目(Y406310);长江学者和创新团队发展计划资助项目(IRT0654)
摘 要:以聚乙二醇(PEG)为制孔剂,通过溶胶凝胶浸渍涂覆法和烧结法将二氧化钛(TiO2)负载于经表面修饰的碳纤维(CF)上,制备多孔TiO2/CF光催化材料。采用场发射扫描电子显微镜(FE-SEM)、X射线衍射仪(XRD)表征材料的形貌和晶型结构,研究TiO2/CF光催化材料对甲基橙溶液的吸附性能,并以质量浓度为80 mg/L的甲基橙溶液为目标降解物,测试材料在紫外光照下的催化性能。结果表明:PEG制孔剂对得到的TiO2/CF光催化材料表面形态和TiO2晶型结构有明显的影响;多孔TiO2/CF光催化材料对偶氮类甲基橙染料的吸附符合准二级动力学方程,且吸附量随PEG分子质量的增大而增加;PEG分子质量为2 000时,可得到具有良好催化效果的多孔TiO2/CF材料。Porous titanium dioxide/carbon fiber(TiO2/CF) photocatalytic material was prepared by loading titanium dioxide on the surface of carbon fiber through the sol-gel dip-coating technology and sinter method using polyethylene glycol(PEG) as a pore-foaming agent.Field emission scanning electron microscopy(FE-SEM) and X-ray diffraction(XRD) were utilized to characterize the morphology and crystal structure of the material.The adsorption of methyl orange on TiO2/CF was studied,and its photocatalytic property under UV irradiation was tested with methyl orange(MO,80 mg/L) as a degradation object.It was revealed that the morphology and crystal structure of TiO2/CF were remarkably influenced by the PEG pore-foaming agent.The adsorption kinetic process of TiO2/CF to methyl orange solution fitted very well with the pseudo-second-order kinetic equation,and the adsorption capacity of TiO2/CF increased with the increase of PEG molecules.The porous TiO2/CF obtained using PEG 2000 displayed excellent catalytic performance.
分 类 号:TB332[一般工业技术—材料科学与工程]
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