摘要
The visible-light photocatalytic activity of BiFeO3 can be enhanced by treating in LiNO3 molten salt. BiFeO3 is prepared by pyrolysis of tartaric acid complex. The as-prepared BiFeO3 is mixed with LiNO3 salt by ball milling for 4 h with the molar ratio 12∶1 of LiNO3 to BiFeO3. The mixture was heated at 270 ℃ for 12 h, and LiNO3 was removed from the product by washing with distilled water. The visible light photocatalytic activity is evaluated by measuring the decoloratation of Congo red aqueous solution. After heating in LiNO3 molten salt, the decoloratation of Congo red aqueous solutions increased significantly from 31.6% to 95.4%. The enhancement of the photocatalytic activity is attributed to surface modification of BiFeO3 by treating in LiNO3 molten Salt.
The visible-light photocatalytic activity of BiFeO3 can be enhanced by treating in LiNO3 molten salt. BiFeO3 is prepared by pyrolysis of tartaric acid complex. The as-prepared BiFeO3 is mixed with LiNO3 salt by ball milling for 4 h with the molar ratio 12：1 of LiNO3 to BiFeO3. The mixture was heated at 270 ℃ for 12 h, and LiNO3 was removed from the product by washing with distilled water. The visible light photocatalytic activity is evaluated by measuring the decoloratation of Congo red aqueous solution. After heating in LiNO3 molten salt, the decoloratation of Congo red aqueous solutions increased significantly from 31.6% to 95.4%. The enhancement of the photocatalytic activity is attributed to surface modification of BiFeO3 by treating in LiNO3 molten Salt.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第10期1830-1832,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:20671039
20121103)资助.
关键词
钙钛矿
融盐法
光催化
Perovskite
Molten salt method
Photocatalytic activity
