Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran.
Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Health Promotion Research Center, Iran University of Medical Sciences, 1449614535 Tehran, Iran; Department of Materials Science and Nanotechnology Engineering, Faculty of Engineering, Near East University, 99138 Nicosia, North Cyprus Mersin 10, Turkey.
Spectrochim Acta A Mol Biomol Spectrosc. 2019 Apr 15;213:28-36. doi: 10.1016/j.saa.2019.01.025. Epub 2019 Jan 15.
Herein, a novel metal-organic framework (MOF) based nanocomposite with efficient catalytic behavior is reported including flake-like copper (II) MOF (CuMOF) and graphitic CN nanosheets (g-CN). The g-CN@MOF nanocomposite was simply prepared by solvothermal synthesis of CuMOF in the presence of g-CN. The characterization analyses using scanning electron microscopy (SEM), X-ray diffractometry (XRD) and some other techniques demonstrated a nano-porous flake-like structure for the synthesized CuMOF, which enveloped the g-CN nanosheets. Furthermore, the investigation of catalytic behavior of synthesized nanomaterial was implemented on HO based reactions. The fluorometric and colorimetric experimentations illustrated that the accompanying of g-CN with CuMOF had a remarkable positive effect on the catalytic behavior of obtained g-CN@MOF. This effect was described based on the improved affinity of nanocomposite to adsorb HO and also synergistic action of its components on the dissociation of HO to hydroxyl radicals. Finally, the analytical application of high catalytic activity of new g-CN@MOF was designed for the rapid and simple measurement of glucose in blood. After the enzymatic oxidation of glucose, the fluorometric method was applied for the analysis of produced HO using terephthalic acid as peroxidase substrate. The system led to the ultrasensitive glucose determination in the concentration range of 0.1-22 μM, with a detection limit (3S/m) of 59 nM.
本文报道了一种具有高效催化性能的新型金属有机骨架（MOF）纳米复合材料，包括片状的铜（II）MOF（CuMOF）和石墨相氮化碳纳米片（g-CN）。g-CN@MOF 纳米复合材料通过在 g-CN 存在下的溶剂热合成简单制备。通过扫描电子显微镜（SEM）、X 射线衍射（XRD）和其他一些技术的表征分析，证明了所合成的 CuMOF 具有纳米多孔片状结构，其包裹了 g-CN 纳米片。此外，对合成纳米材料的催化性能进行了基于 HO 反应的研究。荧光和比色实验表明，g-CN 与 CuMOF 的伴随对所得 g-CN@MOF 的催化行为有显著的积极影响。这种影响是基于纳米复合材料对 HO 的吸附亲和力的提高，以及其组成部分对 HO 解离为羟基自由基的协同作用来描述的。最后，设计了新的 g-CN@MOF 的高催化活性的分析应用，用于快速简单地测量血液中的葡萄糖。在葡萄糖的酶氧化之后，使用对苯二甲酸作为过氧化物酶底物，通过荧光法分析产生的 HO。该系统在 0.1-22 μM 的浓度范围内实现了对葡萄糖的超灵敏测定，检测限（3S/m）为 59 nM。
