ZIF-67 Derived Co3O4/rGO Electrodes for Electrochemical Detection of H2O2 with High Sensitivity and Selectivity
Wu, M; Hong, Y; Zang, X; Dong, X
| HERO ID | 4398679 |
|---|---|
| In Press | No |
| Year | 2016 |
| Title | ZIF-67 Derived Co3O4/rGO Electrodes for Electrochemical Detection of H2O2 with High Sensitivity and Selectivity |
| Authors | Wu, M; Hong, Y; Zang, X; Dong, X |
| Volume | 1 |
| Issue | 18 |
| Page Numbers | 5727-5732 |
| Abstract | In this work, zeolitic imidazolate framework (ZIF) nanocrystal arrays were supported by graphene oxide (GO) nanosheets by a graphene assembly route. Then, ZIF-67/GO was transformed into nanoporous Co3O4/rGO composites through calcination. Both ZIF-67/GO and Co3O4/rGO were employed as active materials to modify glass carbon electrodes for hydrogen peroxide (H2O2) non-enzymatic sensor. The measurement results indicate that ZIF-67/GO presented excellent electro-catalytic activity towards H2O2 with a linear range of 0.1-22.9 mM and a low detection limit of 1.92 mM. More important, the Co3O4/rGO modified GC electrode showed higher detection sensitivity for H2O2 and the limit of detection can be as low as 7.87 nM. Furthermore, ZIF-67/GO and Co3O4/rGO modified electrodes both exhibited excellent selectivity in phosphate buffer solution and NaOH. |
| Doi | 10.1002/slct.201601259 |
| Wosid | WOS:000395427600022 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal:CHEMISTRYSELECT 2365-6549 |
| Is Public | Yes |
| Keyword | Cobalt oxide; Graphene oxide; Hydrogen peroxide detection; ZIF-67 |