材料期刊网

以两步水热合成法,以木材为基质,制备微纳米结构的二氧化钛和氧化亚铜复合薄膜,并通过进一步表面修饰制备超双疏的表面.采用场发射电子扫描电镜(SEM)、X射线衍射仪(XRD)、光电子能谱仪(XPS)、紫外光分光光度计(UV-Vis)和接触角测试,对制备的二氧化钛/氧化亚铜薄膜负载的木材基材料的微观形貌、晶型结构、化学状态、光学性能及润湿性进行表征,通过实验证明该复合薄膜负载的木材在紫外光的照射下具有释放负氧离子的作用.结果表明,在紫外光照射下,相比单纯的二氧化钛薄膜负载的木材,二氧化钛/氧化亚铜薄膜负载的木材释放负氧离子的性能显著提升.同时,二氧化钛/氧化亚铜薄膜负载的木材被赋予了超疏水和超疏油特性、对大肠杆菌具有抑菌性及紫外光照射下释放负氧离子的多种功能.

Anatase TiO2 particles with Cu2O particles were doped on wooden substrates through a two-step method and further modification is employed to create remarkable superamphiphobic surface.The morphological feature,crystal form,chemical state,optical properties and wettability of the as prepared TiO2/Cu2O-coated wood were analyzed using field emission scanning electron microscopy (FE-SEM),X ray diffraction (XRD),X ray photoelectron spectroscopy (XPS),UV-Vis diffuse reflectance spectroscopy (UV-Vis) and contact angle measurement.Meanwhile,it has proved that the TiO2/Cu2O coated wood has the property of negative oxygen ions production under UV light.The results showed that comparing with the TiO2-coated wood,the property of negative oxygen ions production of TiO2/Cu2O-coated wood was drastically improved by doping with Cu2 O par ticles under UV irradiation.Furthermore,the TiO2/Cu2O-coated wood after hydrophobization is imparted with superhydrophobic and superoleophobic properties,antibacterial actions against escherichia coli,and negative ox ygen ions production under UV irradiation.In the paper,a new material for formaldehyde degradation is offered,and the functional wood-based materials have great potentials in the applications of new style functional materials.