An Mingze, Li Li, Tian Yu, Yu Hualiang, Zhou Qianlong
College of Materials Science and Engineering, Qiqihar University Qiqihar 161006 P. R. China
College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 P. R. China.
RSC Adv. 2018 May 23;8(34):18870-18879. doi: 10.1039/c8ra00998h. eCollection 2018 May 22.
Using polystyrene (PS) spheres as a template, three-dimensional ordered macroporous Pt/TiO-ZrO (3DOM Pt/TiO-ZrO) composites were prepared by vacuum impregnation combined with photoreduction. The crystal structure, composition, morphology, optical absorption, and surface physicochemical properties of the as-synthetized samples were characterized by X-ray diffraction (XRD), UV-visible diffuse reflectance spectroscopy (UV-vis/DRS), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and N adsorption-desorption analyses. The results showed that the 3DOM Pt/TiO-ZrO composites were mainly composed of anatase TiO and tetragonal ZrO crystal phases, in which Pt mainly existed as a single species. In addition, the as-synthesized composites had open, three-dimensionally ordered macroporous structures that could enhance their multi-mode photocatalytic degradation performance under UV, visible light, simulated solar light, and microwave-assisted irradiation. Moreover, the 3DOM Pt/TiO-ZrO composites exhibited the best photocatalytic water splitting performance as compared to other systems.
以聚苯乙烯（PS）微球为模板，通过真空浸渍结合光还原法制备了三维有序大孔Pt/TiO-ZrO（3DOM Pt/TiO-ZrO）复合材料。采用X射线衍射（XRD）、紫外可见漫反射光谱（UV-vis/DRS）、X射线光电子能谱（XPS）、扫描电子显微镜（SEM）和N吸附-脱附分析等手段对合成样品的晶体结构、组成、形貌、光吸收和表面物理化学性质进行了表征。结果表明，3DOM Pt/TiO-ZrO复合材料主要由锐钛矿TiO和四方ZrO晶相组成，其中Pt主要以单一物种形式存在。此外，合成的复合材料具有开放的三维有序大孔结构，可增强其在紫外光、可见光、模拟太阳光和微波辅助照射下的多模式光催化降解性能。而且，与其他体系相比，3DOM Pt/TiO-ZrO复合材料表现出最佳的光催化水分解性能。
