光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2001年
1期
32-34
,共3页
苏文悦%傅贤智%魏可镁%张汉辉%林华香%王心晨%李旦振
囌文悅%傅賢智%魏可鎂%張漢輝%林華香%王心晨%李旦振
소문열%부현지%위가미%장한휘%림화향%왕심신%리단진
二氧化钛%FTIR%FT-Raman%DRS
二氧化鈦%FTIR%FT-Raman%DRS
이양화태%FTIR%FT-Raman%DRS
采用sol-gel法制备了纳米TiO2光催化剂，运用FTIR，FT-Raman，DSR等光谱技术对催化剂进行了表征，以光催化降解油酸作为模型反应考察光催化活性。实验结果表明，催化剂的烧结温度对催化剂的晶相结构、半导体能带结构、光吸收性能及光催化活性均产生显著的影响，当烧结温度为400℃时，TiO2光催化剂具有最好的表观吸光度，最大的吸收带边，以及最佳的光催化活性。
採用sol-gel法製備瞭納米TiO2光催化劑，運用FTIR，FT-Raman，DSR等光譜技術對催化劑進行瞭錶徵，以光催化降解油痠作為模型反應攷察光催化活性。實驗結果錶明，催化劑的燒結溫度對催化劑的晶相結構、半導體能帶結構、光吸收性能及光催化活性均產生顯著的影響，噹燒結溫度為400℃時，TiO2光催化劑具有最好的錶觀吸光度，最大的吸收帶邊，以及最佳的光催化活性。
채용sol-gel법제비료납미TiO2광최화제，운용FTIR，FT-Raman，DSR등광보기술대최화제진행료표정，이광최화강해유산작위모형반응고찰광최화활성。실험결과표명，최화제적소결온도대최화제적정상결구、반도체능대결구、광흡수성능급광최화활성균산생현저적영향，당소결온도위400℃시，TiO2광최화제구유최호적표관흡광도，최대적흡수대변，이급최가적광최화활성。
The nano-sized TiO2 photocatalysts were prepared by sol-gel method and characterized by FTIR spectroscopy,FT-Raman spectroscopy and diffuse reflectance spectroscopy(DRS).Photocatalytic degradation of oleic acid over the TiO2 catalysts was investigated.The result showed that calcination temperature has strong effect on crystal structure,energy band structure,optical adsorption and photocatalytic activity of the TiO2 catalysts.It was found that the TiO2 photocatalyst calcined at 400℃ has the best apparent optical adsorption,the biggest band edge position and the highest photoactivity.The effect of calcination temperature on photocatalytic activity of TiO2 catalysts has been ascribed to the changes in structure and optical property of catalyst such as crystal size,content of rutile,residual NO－3,and band-edge position of light adsorption.
