Metal-Organic Framework Derived Hierarchy Nanocomposite And Its Application In Glucose Sensor

Metal–organic frameworks (MOFs), a new class of hybrid functional materialswith high porosity, large surface area and chemical tunability, have demonstratedgreat promise for wide applications in heterogeneous catalysis, gas storage, moleculeseparation, drug delivery and chemical sensing. In addition, MOFs constructed bymetal ions or clusters and organic linkers have nanosized cavities and open channelsproviding pathways for small molecules to access and escape, allowing them tobehave as sacrificial templates or precursors to be converted into functionalnanostructures. In this paper, three novel nonenzymatic glucose sensor wasconstructed based on metal-organic framework-derived nanocomposites. The finalnanocomposites were characterized by scanning electron microscopy,thermogravimetric analysis, X–ray powder diffraction, and electrochemical technique.The results showed that wonderful nanocomposites which possess novel morphologyand considerable electrochemical properties have been synthesised. Contentssummerized as follow:In the first part, conventional hydrothermal method was used to synthesis typicaloctahedral HKUST-1. Then trough a simple one-step pyrolysis method a novelantihill-like Cu@C nanocomposite was prepared. Since the final products give largeenough specific surface area and appropriate pores for electrolyte transfer, the resultedsensor based on anthill-like Cu@carbon nanocomposites showed high catalyticactivity towards the oxidation of glucose with a wide linear range of0.2–8.0mM anddetection limit of29.8μM.In the second part, we have synthesized Gp/CoMOFs composite bylayer-by-layer method. Look into growth process, we found they were anchored infunctional graphene and grow along a single direction and finally present like a flower.As carbonization, the flower structure of Gp/CoMOFs shrinked into a loosened CoNps ball scattering on Gp. They were used to build new nonenzymatic glucosesensors with relatively wide linear range and low detection limit, which are expectedto be applied in practical detection.In last, we have picked poam Ni as an available substrate. Based on “twin metalsource”, fascinating NiMOFs array have grown on foam Ni. Similaraly, one-stepthermolysis was ued to derive porous NiO nanostructure on poam Ni. Circumventingthe trouble of material immobilization neatly and making good use of the superior conductivity and3D network of foam Ni, a simple electrode was constructed. Theelectro-catalytic activity of the electrode was researched.