Key Laboratory for Functional Materials of Fujian Higher Education, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, PR China.
J Colloid Interface Sci. 2012 Nov 15;386(1):1-8. doi: 10.1016/j.jcis.2012.07.003. Epub 2012 Jul 16.
An effective active heterostructured photocatalyst of porous SnO(2)-pillared tetratitanate nanocomposite is synthesized by assembling tetratitanate nanosheets with SnO(2) nanoparticles via an exfoliation-restacking route. The nanocomposite was characterized by powder X-ray diffraction, high-resolution transmission electron microscope, thermogravimetric analysis, UV-vis DRS, X-ray photoelectron spectroscopy, and N(2) adsorption-desorption measurements. It was found that the pillared nanaocomposite is mesoporous with a gallery height of about 2 nm and a specific surface area of 154 m(2)/g. The pillared nanaocomposite exhibited enhanced photocatalytic activity in the photodegradation of Rhodamine B under UV light irradiation. The improved performance is attributed to the electronic coupling between the host and the guest components, as well as its high surface area and mesoporosity.
一种有效的活性异质结构光催化剂多孔 SnO(2)-撑 tetratitanate 纳米复合材料是通过组装四钛纳米片与 SnO(2)纳米粒子通过剥离 - 重堆路线。纳米复合材料的特征是粉末 X 射线衍射、高分辨率透射电子显微镜、热重分析、紫外可见 DRS、X 射线光电子能谱和 N(2)吸附解吸测量。结果表明，所制备的纳米复合材料具有介孔结构，层间距约为 2nm，比表面积为 154m(2)/g。在紫外光照射下，负载型纳米复合材料在 Rhodamine B 的光降解中表现出增强的光催化活性。性能的提高归因于主客体组分之间的电子耦合以及其高的比表面积和介孔性。
