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中文摘要：
制备了具有有序孔洞多孔阳极氧化铝（AAO）,并以之为模板通过溶胶-凝胶法制备高度取向的WO3·H2O纳米线阵列,用X射线衍射、XPS、扫描电镜（SEM）和比表面积仪进行表征。结果表明：WO3·H2O纳米线线径与AAO模板的孔径一致,且分布均匀,线径为26 nm,线长为1.1μm;与相同条件下用玻纤布作载体制备的WO3·H2O膜相比,其平均晶粒小,低密度,高比表面积。将催化剂WO3·H2O/AAO与WO3·H2O/玻纤布两者分别对气相甲醛进行光催化降解反应以评价它们的光催化活性,得出WO3·H2O纳米线阵列光催化降解气相甲醛反应速率常数大约是WO3·H2O/玻纤布的3.4倍,说明以AAO为模板制备的WO3·H2O纳米线阵列具有更高的光催化活性。
英文摘要：
The highly ordered porous anodic alumina （AAO） membrane was synthesized, and using it as template, the WO3· H2O nanowire arrays with good orientation were prepared by the sol-gel method. The products are characterized by X-ray Diffraction and XPS, Scanning Electron Microscopy and Specific Surface Area Instrument. And the results show that WO3· H2O Onanowires are uniformly distributed, and the diameters are consistent with the pores of the AAO template, about 26 nm in diameter and 1.1 μm in length. Compared with the WO3· H2O film on fiberglass cloth as carrier, the WO3· H2O nanowires have a smaller crystallite size, less density and larger specific surface area. Photocatalytic activities of the WO3· H2O/AAO and WO3· H2O/fiberglass cloth were measured by degradation of gaseous formaldehyde respectively, and the rate constant of photocatalytic reaction is about 3.4 times that of the WO3· H2O/fiberglass cloth film. It is indicated that the WO3· H2O nanowires arrays synthesized as AAO template have higher photocatalytic activity.
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