Ultrathin nickel-metal-organic framework (Ni-MOF) nanobelts, [Ni(CHO)(HO)]·40HO (Ni-MIL-77), have been exploited successfully for the fabrication of a non-enzymatic urea sensor. Ni-MOF ultrathin nanobelts in alkaline media can be used as an efficient catalyst for urea electrooxidation. As a non-enzymatic urea sensor, Ni-MOF ultrathin nanobelts exhibit a high sensitivity of 118.77 μA mM cm, wide linear range of 0.01-7.0 mM, and low detection limit of 2.23 μM (S/N = 3). The selectivity, stability and reliability of ultrathin Ni-MOF nanobelts towards urea oxidation are also investigated. Moreover, Ni-MOF ultrathin nanobelts were further used to detect urea in human body fluids. All these findings confirm that the urea sensor based on Ni-MOF ultrathin nanobelts is successfully prepared and promising for applications in medical diagnostics and environmental monitoring.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9071849 | PMC |
| http://dx.doi.org/10.1039/c9ra05716a | DOI Listing |
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