Novel pH microsensor based on a thin film gold electrode modified with lead dioxide nanoparticles

被引：0
|
作者：
Hassan Arida
机构：
[1] Taif University,Pharmacy College
[2] 888-Taif,undefined
[3] Saudi Arabia,undefined
[4] and Hot laboratories Center,undefined
[5] Atomic Energy Authority,undefined
来源：
Microchimica Acta | 2015年 / 182卷
关键词：
Lead dioxide nanoparticles; Thin film microsensor; pH measurements; Silicon-planar gold substrate; Microchips;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A highly sensitive thin-film pH micro-sensor has been fabricated by deposition of lead dioxide (β-PbO2) nanoparticles (NPs) on a planar gold electrode. The resulting pH microchip electrode displays excellent potentiometric response to pH values with a super-Nernstian slope of 84 mVpH−1 over the pH 0.25–13 range. The NPs were electrochemically placed on the planar gold substrate by low current deposition in combination with high voltage oxidation. The merits offered by this elaborated pH microsensor include fast response time, high sensitivity, reasonable selectivity, simple fabrication, long lifetime and the feasibility of miniaturization and integration.
引用
收藏
页码：149 / 156
页数：7
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