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首页> 外文期刊>Journal of industrial and engineering chemistry >Comparison of the influence of nanomaterials on response properties of copper selective electrodes
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Comparison of the influence of nanomaterials on response properties of copper selective electrodes

机译：纳米材料对铜选择性电极响应特性影响的比较

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摘要

Novel Cu~(2+) ion selective electrode in carbon paste matrices based on incorporation of bis(2-hydroxynaphthaldehydene)-l,6-hexanediamine (BHNHDA) has been developed. The influence of variables including sodium tetraphenylborate (NaTPB), ionophore, and amount of multiwalled carbon nanotubes (MWCNT) and Nujol and effect of two new nanoparticles including gold nanoparticles loaded on activated carbon (Au-NP-AC) and zinc sulfide nanoparticles loaded on activated carbon (ZnS-NP-AC) on the electrodes response was studied and optimized. At optimum specified conditions, the proposed electrodes have appropriate advantages such as short response times and suitable reproducibility and applicability for a period of at least 1 month without any significant divergence in slope and response properties. The sensor based on impregnations of MWCNT, Au-NP-AC and ZnS-NP-AC have wide linear range of concentration (6 x 10~(-8)-1.0 x 10~(-1) mol L~(-1)) and detection limit of lower than 4 x 10~(-8)mol L~(-1) of Cu~(2+) ion. The electrodes based on incorporation of Au-NP-AC and ZnS-NP-AC have Nernstian response with slope of 29.34 ± 1.41 and 29.78 ± 1.23 mV decade~(-1) and response is independent ofpH in the range of 2.0-5.0. Finally, these electrodes have been successfully applied for the determination of Cu~(2+) ions content in various real samples. Due to their acceptable selectivity coefficient, they are usable for accurate and successful evaluation of Cu~(2+) ions content in various real sample with complicated matrices.
机译：基于双（2-羟基萘甲醛）-1,6-己二胺（BHNHDA）的结合，开发了一种碳糊基体中的新型Cu〜（2+）离子选择电极。变量包括四苯硼酸钠（NaTPB），离子载体以及多壁碳纳米管（MWCNT）和Nujol的量的影响以及两种新纳米颗粒的影响，包括活性炭上负载的金纳米颗粒（Au-NP-AC）和硫化锌上负载的硫化锌纳米颗粒研究并优化了活性炭（ZnS-NP-AC）对电极的响应。在最佳指定条件下，建议的电极具有适当的优势，例如响应时间短，在至少1个月的时间内具有适当的重现性和适用性，并且斜率和响应特性没有任何明显的差异。基于MWCNT，Au-NP-AC和ZnS-NP-AC浸渍的传感器具有宽的线性浓度范围（6 x 10〜（-8）-1.0 x 10〜（-1）mol L〜（-1） ），检测限低于4 x 10〜（-8）mol L〜（-1）的Cu〜（2+）离子。基于Au-NP-AC和ZnS-NP-AC并入的电极具有能斯特响应，其斜率分别为29.34±1.41和29.78±1.23 mV October〜（-1），并且在2.0-5.0范围内与pH无关。最终，这些电极已成功应用于各种实际样品中Cu〜（2+）离子含量的测定。由于其可接受的选择性系数，它们可用于准确，成功地评估各种复杂基质中真实样品中Cu〜（2+）离子的含量。

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