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.
出处
《功能材料》
EI
CAS
CSCD
北大核心
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）
关键词
TIO2
膨胀石墨
光催化
亚甲基兰
甲基橙
TiO2
exfoliated graphite
photocatalysis
methylene blue
methyl orange
