CAJ | 학술논문

采用自组装生长聚苯乙烯胶体模板和溶胶-凝胶法,制备出三维(3D)有序结构In掺杂TiO2(IO-TiO2-In)薄膜可见光催化剂。光催化实验证明, IO-TiO2-In薄膜降解甲醛的可见光活性是TiO2和三维有序结构TiO2(IO-TiO2)薄膜的5倍。利用X射线电子衍射(XRD)谱、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)和紫外-可见(UV-Vis)漫反射吸收光谱确定了催化剂的晶相结构、表面微结构和能带结构。结果表明, IO-TiO2-In薄膜具有锐钛矿型三维有序结构,与TiO2相比,增加了比表面积,提高光的利用率；掺入的In离子在薄膜表面形成In2O3和O-In-Clx (x=1,2)物种,既增强可见光的吸收,又有效地促进了光生载流子的分离,提高了光生载流子在固/气界面参加光催化反应的利用率,使催化剂的可见光催化活性显著提高。
채용자조장생장취분을희효체모판화용효-응효법,제비출삼유(3D)유서결구In참잡TiO2(IO-TiO2-In)박막가견광최화제。광최화실험증명, IO-TiO2-In박막강해갑철적가견광활성시TiO2화삼유유서결구TiO2(IO-TiO2)박막적5배。이용X사선전자연사(XRD)보、X사선광전자능보(XPS)、소묘전자현미경(SEM)화자외-가견(UV-Vis)만반사흡수광보학정료최화제적정상결구、표면미결구화능대결구。결과표명, IO-TiO2-In박막구유예태광형삼유유서결구,여TiO2상비,증가료비표면적,제고광적이용솔；참입적In리자재박막표면형성In2O3화O-In-Clx (x=1,2)물충,기증강가견광적흡수,우유효지촉진료광생재류자적분리,제고료광생재류자재고/기계면삼가광최화반응적이용솔,사최화제적가견광최화활성현저제고。
An In-doped TiO2 thin film with a three-dimensional (3D) ordered structure (IO-TiO2-In) was prepared by the self-assembly template method of polystyrene col oidal crystal growth and sol-gel method. The visible light photocatalytic activity of the IO-TiO2-In thin film for the degradation of formaldehyde is five times that of TiO2 and undoped IO-TiO2. The crystal structure, surface microstructure, and energy band structure of the catalyst were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and ultraviolet-visible (UV-Vis) diffuse reflectance spectroscopy. The IO-TiO2-In thin film is an ordered anatase structure, which increases the specific surface area and photo efficiency, compared with those of pure TiO2. Doped In ions form In2O3 and O-In-Clx (x=1, 2) species on the surface of the thin film. This increases the absorption of visible light, and promotes the separation of photogenerated charge carriers. It improves the efficiency of photogenerated charge carriers in the photocatalytic reaction at the solid/gas interface, and significantly increases the visible light photocatalytic activity.