Highly crystallized mesoporous ZrO₂ nanomaterials were synthesized by solvent evaporation induced self‐assembly approach. Ordered mesoporous ZrO₂ nanomaterials were characterized by TEM, SEM, BET, XRD and UV‐Vis spectroscopy. The obtained nanomaterials exhibit the close‐packing mesopores with average pore size of 7 nm and a highly crystallized framework with tetragonal phase. A non‐enzyme electrochemical sensor based on ordered mesoporous ZrO₂ is established for selective detection of methyl parathion (MP). The online extraction of MP is firstly achieved by ZrO₂ modified electrode at open‐circuit potential for 5 min., and the sensitive detection of MP is performed by differential pulse voltammetry (DPV) method. By comparison, DPV responses of mesoporous ZrO₂ are 40 times and 25 times larger than that of mesoporous silica and mesoporous carbon with the similar pore structure, implying the specific affinity advantage of zirconia to phosphoric group. The quantitative analysis result shows that the voltammetric currents are linear with concentrations of MP ranging from 1 ng/ml to 2 μg/ml with a detection limit of 0.53 ng/ml. The sensor also exhibits good stability and high selectivity against interfering species. The excellent analytical performances are owed to the accessible and uniform mesoporous structures, highly crystallized frameworks of ZrO₂ and its specific affinity to phosphate groups.

中文翻译：

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有序介孔氧化锆的简便合成，用于电化学富集和有机磷农药的检测

通过溶剂蒸发诱导自组装方法合成了高度结晶的介孔ZrO ₂纳米材料。通过TEM，SEM，BET，XRD和UV-Vis光谱对有序介孔ZrO ₂纳米材料进行了表征。所获得的纳米材料具有紧密堆积的中孔，平均孔径为7 nm，并且具有高度结晶的四方相骨架。建立了基于有序介孔ZrO ₂的非酶电化学传感器，用于选择性检测甲基对硫磷（MP）。MP的在线提取首先由ZrO ₂实现修饰电极在开路电势下保持5分钟，并通过差动脉冲伏安法（DPV）进行MP的灵敏检测。相比之下，中孔ZrO _2的DPV响应比具有相似孔结构的中孔二氧化硅和中孔碳的DPV响应分别大40倍和25倍，这表明氧化锆对磷酸基团具有特定的亲和力优势。定量分析结果表明，伏安电流是线性的，MP浓度在1 ng / ml至2μg/ ml范围内，检出限为0.53 ng / ml。该传感器还具有良好的稳定性和对干扰物的高选择性。出色的分析性能归因于ZrO ₂易于接近且均匀的介孔结构，高度结晶的骨架 及其对磷酸基团的特异性亲和力