基于银离子和镧离子掺杂效应的氧敏感材料研究  

Oxygen sensor based on codoping effect of metal ions

作　　者：熊小莉[1] 陈欣[1] 高尚芬[2] 袁红雁[1] 肖丹[1] 

机构地区：[1]四川大学化工学院 [2]四川达县师范专科学校,四川达州635000

出　　处：《化学研究与应用》2005年第5期680-682,共3页Chemical Research and Application

摘　　要：A novel oxygen sensor based in tris（2,2′-bipyridine） ruthenium（Ⅱ）,[Ru（bpy）3]Cl2 adsorbed onto silica particles codoped with metal-ions as support system was reported first in this paper.The oxygen-sensing properties were studied.Compared with reference(IN2/IO2-IRef),the relative fluorescence intensity was enhanced after codoped with La3+(10-3M) and decreased after codoped with Ag+(5.0×10-4M).The experiments of codoping with different concentration of Ag+ and La3+ showed that the relative fluorescence intensity was all decreased after different concentration of Ag+ were codoped with,but the result was contrary for La3+.We suggest that the former has formed dark-brown Ag2O which can adsorb a part of excited light,given rise to the decrease of fluorescence intensity.The increase of the latter probably because the energy transfer of La increased the fluorescence intensity.A novel oxygen sensor based in tris （2,2＇ -bipyridine） ruthenium （ Ⅱ ）, [ Ru （bpy）3 ] Cl2 adsorbed onto silica particles codoped with metal - ions as support system was reported first in this paper. The oxygen - sensing properties were studied. Compared with reference （IN2/IO2 -IBcf） , the relative fluorescence intensity was enhanced after codoped with La^3＋ （10^-3M ） and decreased after cadoped with Ag^＋ （5.0 × 10^-4M）. The experiments of codoping with different concentration of Ag^＋ and La^3＋ showed that the relative fluorescence intensity was all decreased after different concentration of Ag^＋ were eedoped with, but the result was contrary for La^3＋. We suggest that the former has formed dark - brown Ag2O which can adsorb a part of excited light,given rise to the decrease of fluorescence intensity. The increase of the latter probably because the energy transfer of La increased the fluorescence intensity.

关 键 词：金属离子 掺杂效应 氧传感器 

分 类 号：O657.3[理学—分析化学]