NiO nanoparticles (NiO NPs) have been prepared with green synthesis method using Ocimum sanctum leaf extract (OSLE), which contains secondary metabolite compounds of alkaloids as a weak base source and capping agent. Characterization using Particle Size Analyser (PSA) showed a particle size of NiO about 52.42 nm. NiO NPs was used as modified on glassy carbon (GC) electrode, and then characterized using cyclic voltammetry (CV) and Scanning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX). GC-NiO NPs was used for preliminary studies of urea sensor. The results showed that GC-NiO NPs can detect urea with limit of detection (LOD) values of 0.12 mM and linearity R2 of 0.97. In addition, the repeatability of urea sensor studies with GC-NiO NPs electrode shows % RSD of 2.854, while its stability shows % RSD of 7.90 for 3 days.
|Journal||IOP Conference Series: Materials Science and Engineering|
|Publication status||Published - 28 Apr 2020|
|Event||3rd International Symposium on Current Progress in Functional Materials 2018, ISCPFM 2018 - Depok, Indonesia|
Duration: 8 Aug 2018 → 9 Aug 2018
- GC-NiO NPs electrode
- glassy carbon electrode
- Ocimum sanctum