Diamond Electrodes for High Sensitivity Mercury Detection in the Aquatic Environment: Influence of Surface Preparation and Gold Nanoparticle Activity
Diamond Electrodes for High Sensitivity Mercury Detection in the Aquatic Environment: Influence of Surface Preparation and Gold Nanoparticle Activity
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DOI：
10.1002/elan.201900281
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发表时间：
2019-09-01
期刊：
影响因子：
3
通讯作者：
Jackman, Richard B.
中科院分区：
文献类型：
--
作者：
McLaughlin, Maeve H. S.;Pakpour-Tabrizi, Alexander C.;Jackman, Richard B.
这项工作比较了抛光和未抛光的硼掺杂金刚石（BDD）电极装饰两种尺寸的金纳米粒子（AuNPs）作为强大的汞传感器在水生环境中使用。电极表面上的催化活性金纳米颗粒的大小被证明比BDD的表面制备对汞检测的灵敏度具有不太显著的影响。检测的最低限度与抛光的BDD电极，这两个检测汞的浓度为1 pM，6个数量级以上的灵敏度比最低检测限的5 μ M实现与未抛光的BDD电极，和高与其他报道的电极系统相比。
This work compares polished and unpolished boron doped diamond (BDD) electrodes decorated with two sizes of gold nanoparticles (AuNPs) for use as robust mercury sensors in aquatic environments. The size of the catalytically active AuNPs on the electrode surfaces was demonstrated to have a less significant effect on the sensitivity for mercury detection than the surface preparation of the BDD. The lowest limits of detection were achieved with the polished BDD electrodes, which both detected mercury at a concentration of 1 pM, six orders of magnitude greater sensitivity than the lowest detection limit of 5 mu M achieved with an unpolished BDD electrode, and high in comparison with other reported electrode systems.