中文摘要：

采用乙醇作为诱导剂,利用简单的低温水热合成法在木材表面原位生长无机WO3纳米片,探讨WO3/木材的光响应功能。使用扫描电镜（SEM）、X射线衍射（XRD）、紫外-可见光（UV-vis）、色差仪和热重分析（TG）分别表征了此复合材料形貌、相结构、紫外光吸收、光响应和热稳定性能,并进一步探讨了此复合材料的疏水功能。SEM表明WO3纳米片均匀的生长在木材表面;XRD表明WO3具有六方晶相结构;UV-vis表明WO3处理后的木材与素材相比,其最大吸收波长出现蓝移;光响应测试表明,WO3/木材在紫外光照射下具有明显的变色功能;TG表明WO3涂层对木材成分降解起到一定的抑制作用。此外,经过十八烷基三氯硅烷改良后,此复合材料具有超疏水功能。

英文摘要：

The tungsten trioxide with sheet- like nanostructures is grown on wood surfaces via a simple low- temperature hydrothermal method with ethanol as an inducer. The photoresponsive functions of the WO3/wood are discussed. The morphologies, the phase structure,the ultraviolet（UV） absorption, the photoresponse and the thermal stability are characterized by using the scanning electron microscopy（SEM）, the X-ray diffraction（XRD）, the ultraviolet- visible（UV- vis） light, the color difference meter and the thermogravimetry（TG）analysis, respectively, and the hydrophobic property is also measured. The SEM results show that the WO3 nanosheets are uniformly grown on the wood surfaces. The XRD results further reveal that the WO3 is highly crystallized with a hexagonal structure. The UV-vis analysis shows that the obtained sample sees a remarkable blue shift compared with the pristine wood. The photoresponsive tests show that the sample has an obvious photochromic function under the UV light irradiation. The TG analysis shows that the WO3 coatings can restrain the degradation of the wood components. In addition, the composite possesses the superhydrophobic property through the octadecyltrichlorosilane（OTS） treatment.