期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
An Electrochemical Nitrite Sensor Based on a Multilayer Film of Polyoxometalate
1
作者 Yosra Sahraoui Sana Chaliaa +2 位作者 Abderrazak Maaref amor haddad Nicole Jaffrezic-Renault 《Journal of Sensor Technology》 2013年第3期84-93,共10页
In this work, we have developed an electrochemical sensor for nitrite detection, based on a polyoxometalate (POM) namely mono-lacunary keggin anion [SiW11O39]8﹣ cited as (SiW11). Electrochemical characterization of S... In this work, we have developed an electrochemical sensor for nitrite detection, based on a polyoxometalate (POM) namely mono-lacunary keggin anion [SiW11O39]8﹣ cited as (SiW11). Electrochemical characterization of SiW11 shows two-step reduction processes, with formal potentials of ﹣0.5 V (I) and ﹣0.68 V (II). Oppositely charged polyelectrolyte (poly (allylamine hydrochloride) (PAH)) and (SiW11) were assembled alternately to modify glassy carbon electrode. The electrochemical behavior of the modified electrode was studied in detail using cyclic voltammetry (CV). The results showed that SiW11/PAH/GC electrode present good electrocatalytic activity for the reduction of nitrite. The sensor showed a dynamic range from 100 μM to 3.6 mMof nitrite and no interference from other classical anions. Experimental factors that affect electron-transfer rate in these films, such as pH effect and layers number, were systematically analyzed. 展开更多
关键词 NITRITE SENSOR POLYOXOMETALATE Mono-Lacunary KEGGIN ANION LAYER by LAYER Assembly Process
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部