Ag/PANI/Fe_2O_3复合纳米粒子的合成与催化性能  

Synthesis and Catalytic Performance of Ag/PANI/Fe_2O_3 Composite Particles

作　　者：张霞[1] 陈莉[1] 周春彬[2] 

机构地区：[1]东北大学理学院,沈阳110004 [2]辽宁林业职业技术学院,沈阳110101

出　　处：《无机化学学报》2010年第11期1934-1938,共5页Chinese Journal of Inorganic Chemistry

基　　金：中央高校基本科研业务费专项资金(No.90405006)资助项目

摘　　要：借助于PANI的还原性质,PANI/Fe2O3复合载体与AgNO3发生表面氧化还原反应,合成了Ag/PANI/Fe2O3复合纳米粒子。TEM和XRD结果表明,立方晶系纳米银的平均粒径<10nm。FTIR结果表明,Ag与PANI及Fe2O3复合载体之间不存在化学键合作用,但由于PANI与Ag之间的电子相互作用,Ag/PANI/Fe2O3复合纳米粒子的FTIR吸收峰发生蓝移。Ag/PANI/Fe2O3复合纳米粒子对于间硝基苯磺酸钠的硼氢化钠还原反应表现出良好的催化活性,30min内间硝基苯磺酸钠的转化率达到86.77%。The Ag/PANI/Fe2O3 composite particles were synthesized through the surface redox reaction of silver citrate with PANI/Fe2O3 composite carrier.The results of TEM and XRD showed that the average size of silver was smaller than 10 nm.The FTIR analysis proved that there was no chemical bond between silver,polyaniline and ferric oxide,but the adsorption peak of Ag/PANI/Fe2O3 composites shifted toward shorter wavelength caused by the electronic interaction of silver and polyaniline.In the reduction of m-nitrophenylsulfonic sodium with an excess amount of NaBH4 at room temperature,the Ag/PANI/Fe2O3 composites presented good catalytic activity with a m-nitrophenylsulfonic sodium conversion rate of 86.77%.

关 键 词：聚苯胺 氧化铁 纳米银 导电高分子 催化 

分 类 号：O648[理学—物理化学]