| Institution: | 1. Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, 630 003 Tamilnadu, India.
Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201 002 Uttar Pradesh, India;2. Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, 630 003 Tamilnadu, India. |
| Abstract: | Cu-MOF/graphene composite were obtained by solvothermal and electrochemical methods. The interaction and formation of Cu-MOF/graphene (GE) composite was systematically studied with the support of various characterizations including X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and cyclic voltammogram (CV). The Cu-MOF/graphene composite coated glassy carbon (GC) electrode exhibited good catalytic performance towards the electro-oxidation of caffeine in neutral condition. The modified electrode displayed good linear range (5 μM to 450 μM), sensitivity (0.710 μA μM−1 cm−2), detection limit (1.38 μM), selectivity, high stability and reproducibility. Finally, the fabricated electrode extended into successful detection of caffeine in tea and coffee samples with good recoveries. |
