以碳纳米管-氨基硫脲复合物为载体的碳糊铁离子选择性电极研究  

Study on a carbon paste iron(Ⅲ)-selective electrode based on the composite of carbon nanotube-thiosemicarbazide as the carrier

作　　者：刘新露[1] 张英[1] 

机构地区：[1]四川理工学院化学与制药工程学院,四川自贡643000

出　　处：《化学传感器》2014年第3期49-52,共4页Chemical Sensors

基　　金：绿色催化四川省高校重点实验室项目(LYJ1305);四川理工学院科研基金项目(2010XJKYL004)

摘　　要：以碳纳米管-氨基硫脲复合物为载体制成碳糊电极,该电极对铁离子具有选择性的Nernst电位响应,其线性范围为3.5×10^-7-1.0×10^-1mol/L,斜率为30.7 mV/decade,检测下限为1.0×10^-7 mol/L。该电极对Fe^3＋的响应时间为15 s,其选择性良好,并能成功应用于Fe^3＋的回收率实验。A new modified carbon paste electrode based on the composite of carbon nanotube-thiosemicarbazide as the carrier was prepared. The electrode exhibits a selective Nernst-potential slope of 30.7 mV/decade for Fe3＋over a linear range of 3.53.5×10^-7-1.0×10^-1mol/L mol/L. The detection limit of the electrode is 1.0 ×10^-7 mol/L. The response time of the electrode is 15 s. The electrode shows a good selectivity for Fe^3＋and it can be successfully applied to the recovery of determination of Fe^3＋.

关 键 词：多壁碳纳米管 氨基硫脲 FE3+ 离子选择性电极 

分 类 号：O613.71[理学—无机化学] O646[理学—化学]