College of Chemistry and Chemical Engineering, Shenyang Normal University of China, Shenyang 110034, China.
Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box332, Shenyang 110819, China.
Molecules. 2022 Dec 18;27(24):9028. doi: 10.3390/molecules27249028.
In this work, ionic liquid (IL) of 1-propyl-3-methyl imidazolium chloride-functionalized silica-mesostructured cellular foam (MCF) was prepared. The obtained MCF-IL was used to construct the Fe(CN)-confined electrode (MCF-IL-Fe(CN)/PVA) and HO electrochemical behavior on the electrode was investigated. It was found that HO was oxidized on the freshly prepared electrode while catalytically electro-reduced on the acid pretreated one. Cyclic voltametric results revealed that the real catalyst for catalytic reduction of HO was Prussian blue (PB) rather than Fe(CN). The electrocatalytic ability of the acid-pretreated MCF-IL-Fe(CN)/PVA electrode offered a wide linear range for HO detection. The present study on HO electrochemical behavior on an MCF-IL-Fe(CN)/PVA electrode might provide useful information for further developing integrated Fe(CN)-mediated biosensors as HO is extensively involved in the classic reaction containing oxidase enzymes.
在这项工作中，制备了功能化硅胶介孔泡沫（MCF）的 1-丙基-3-甲基咪唑氯化物离子液体（IL）。所得到的 MCF-IL 被用于构建 Fe(CN)-受限电极（MCF-IL-Fe(CN)/PVA），并研究了 HO 在电极上的电化学行为。结果发现，HO 在新制备的电极上被氧化，而在酸预处理的电极上被催化还原。循环伏安结果表明，HO 催化还原的实际催化剂是普鲁士蓝（PB）而不是 Fe(CN)。酸预处理 MCF-IL-Fe(CN)/PVA 电极对 HO 的电催化能力为 HO 的检测提供了较宽的线性范围。本研究对 MCF-IL-Fe(CN)/PVA 电极上 HO 的电化学行为的研究可能为进一步开发基于 Fe(CN)的集成生物传感器提供有用的信息，因为 HO 广泛参与包含氧化酶的经典反应。
