1. MOF-derived porous nanostructured Ni2P/C material with highly sensitive electrochemical sensor for uric acid
- Author
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Ning Zhang, Shuang Liu, Donglian Liu, and Gaihua Li
- Subjects
Detection limit ,Materials science ,Scanning electron microscope ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,law.invention ,Electrochemical gas sensor ,Inorganic Chemistry ,Electron transfer ,law ,Transmission electron microscopy ,Materials Chemistry ,Calcination ,Differential pulse voltammetry ,Physical and Theoretical Chemistry ,Cyclic voltammetry ,0210 nano-technology ,Nuclear chemistry - Abstract
The nanostructured Ni2P/C was synthesized by a facile approach via the calcination of Ni-based metal–organic-framework (Ni-MOF-74) with adsorptive red phosphorus and was used to fabricate a modified glassy carbon electrode (GCE) for detection of uric acid (UA). The composition and morphology of Ni2P/C were characterized by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Meanwhile, the electrochemical performances were investigated by cyclic voltammetry and differential pulse voltammetry. Under the optimized conditions, the proposed sensor not only exhibited high selectivity, but also showed a wide linear range over UA concentration from 0 to 6.0 µM with a low detection limit of 7.0 × 10−8 mol/L, which attributed to the advantage of good electron transfer efficiency.
- Published
- 2021