MOF-derived Porous NiO Nanorod and Microflower Structures with Enhanced Non-enzymatic Glucose Electrochemical Sensing Performance

摘要

The porous and hierarchical structure with plentiful electroactive sites may ensure high activity and stability in electrocatalytic oxidation glucose by accelerating the transport of analyzer and electron during the electrochemical process. Thus, to design and fabricate electrode materials with different structures and morphology is still an appreciation method to promote electrochemical performance. In this work, two morphology of porous NiO structures were synthesized by the MOF-derived precursors after the calcination process. The obtained NiO structures prepared by thermal conversion of Ni-BTEC and Ni-PTA frameworks at mild temperature conditions not only possess the nanorods and microflowers morphology of the MOF precursors but also exhibit large surface area, which could be used as the enzyme-free catalyst for glucose electrooxidation in the basic supporting electrolyte. The result indicates that MOF-derived porous NiO nanorods and microflowers may be potential electrode materials for glucose electrochemical sensing.