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首页> 外文期刊>International Journal of Electrochemical Science >Voltammetric Study of a Cubic Silsesquioxane Organically Modified with Imidazole and their Subsequent Reaction with Cadmium and Hexacyanoferrate (III)
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Voltammetric Study of a Cubic Silsesquioxane Organically Modified with Imidazole and their Subsequent Reaction with Cadmium and Hexacyanoferrate (III)

机译：咪唑有机修饰的立方倍半硅氧烷的伏安研究及其与镉和六氰基高铁酸盐的反应（III）

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摘要

A hybrid nanocomposite formed by interaction of a octa (3-chloropropyl)octasilsesquioxane modifiedwith imidazol , and its subsequent reaction with cadmium and hexacyanoferrate (II) (CdHSSI) wasincorporated into a graphite paste electrode and the electrochemical studies were conducted with cyclicvoltammetry. The cyclic voltammogram of the modified graphite paste electrode with CdHSSI (GPE-- CdHSSI), showed one redox couple with formal potential E =0.14V (vs Ag/AgCl, NaNO3, 1.0 mol L 1 -1 2+ 3+ ; v = 20 mV s ), attributed to the Fe (CN)6/ Fe (CN)6 process. The redox couple presents anelectrocatalytic response for determination of ascorbic acid. The modified electrode gives a linear-4 -1 -4 -1 range from 2.010 mol L to 9.010 mol L (r=0.998) for the determination of ascorbic acid with-4 -1detection limit of 1.2110 mol L with a relative standard deviation of 5% (n=3) and amperometric-1 sensitivity of 6.217 mA/ mol L for ascorbic acid.
机译：通过将咪唑改性的八（3-氯丙基）十八碳倍半硅氧烷与随后的与镉和六氰合铁酸盐（II）（CdHSSI）的反应生成的杂化纳米复合材料掺入石墨糊电极中，并通过循环伏安法进行电化学研究。具有CdHSSI（GPE-- CdHSSI）的改性石墨糊电极的循环伏安图显示了一个氧化还原对，其形式电位E = 0.14V（vs Ag / AgCl，NaNO3、1.0 mol L 1 -1 2+ 3+; v = 20 mV s），归因于Fe（CN）6 / Fe（CN）6过程。氧化还原对呈现出用于测定抗坏血酸的电催化反应。修饰电极的线性-4 -1 -4 -1范围为2.010 mol L至9.010 mol L（r = 0.998），用于测定抗坏血酸，-4 -1的检出限为1.2110 mol L，相对标准偏差为抗坏血酸的5％（n = 3）和安培1灵敏度为6.217 mA / molL。

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