TiO2／膨胀石墨复合材料的制备及光催化性能的研穷  

Preparation of TiO2/exfoliated-graphite composite and the investigation of photocatalytic ability

作　　者：杨媛媛[1] 申玥[1] 黄妙良[1] 吴季怀[1] 

机构地区：[1]华侨大学材料物理化学研究所,福建泉州362021

出　　处：《功能材料》2007年第A07期2453-2456,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目（50572030;50372022）;福建省自然科学基金资助项目（D0010011）

摘　　要：采用快速升温法制备出以膨胀石墨为载体的TiO2／膨胀石墨光催化剂，用SEM及XRD对其表面形貌及结构进行表征，研究了光催化剂在紫外光照射下的催化能力，探讨了目标降解物溶液的初始浓度及其pH值对光催化剂的降解能力的影响。结果发现，负载量为10％的光催化剂对40mg／L的亚甲基兰溶液5h的光降解率达到58．83％，甲基橙为51．12％。TiO2 loaded on exfoliated graphite was synthesized by rapidly calefaction. The TiO2/exfoliated-graphite catalysts were characterized by SEM and XRD. A series of experiments were carried out to study the degradation of methylene blue under UV light irradiation. The experiment results was that the TiO2/exfoliated-graphite catalysts showed that the degradation of methylene blue and methyl orange was dependent on the concentration of methylene blue and methyl orange solution and pH of solution. The TiO2/exfoliated-graphite catalysts with 10% TiO2 loading showed higher photocatalytic efficiency, and the degradation rate of methylene blue was 58.83% and the degradation rate of methyl orange was 51.12% under 5h irradiation time.

关 键 词：TIO2 膨胀石墨 光催化 亚甲基兰 甲基橙 

分 类 号：O644.1[理学—物理化学]