Speakers
Description
The agricultural sector is a key component of the global economy. Driven by human demand for quality agricultural products, the use of nitrogen fertilizer (N-fertilizer) grows rapidly due to an increased need for dietary protein, including animal protein. Nitrogen is one of the significant indicators of soil fertility and crop growth conditions. Hence, monitoring the concentration of nitrogen in the soil can improve the sustainability of agricultural production. The current study prepared pristine Mo and Mo-doped Co3O4 nanoparticles using hydrothermal method and further characterized their physical and optical properties to evaluate their suitability in gas sensing applications. The X-ray diffraction (XRD) analyses show that Mo-doped Co3O4 nanoparticles exhibit a cubic spinel structure. The average crystalline size decreased with increasing concentrations of Mo-doping Co3O4 nanoparticle from 55.23 Å to 16.86 Å. Scanning electron microscopy (SEM) reveal that Mo-doped Co3O4 nanoparticles have nanoflakes particles with the combination of cubic and hexagonal shapes. The Brunauer-Emmett-Teller (BET) surface area analyser results indicate that the average particles size decreases with increasing Mo-doping concentration and therefore resulting in an increase for both the surface area and pore volume. Meanwhile, the Fourie transform-infrared (FTIR) spectroscopy confirms the formation of the Co+2 and Co+3 for the prepared Co3O4 nanoparticles. The findings suggest Mo doping can be used to tailor the structural properties of Co3O4 nanoparticles with improved gas sensing performance. These particles can be further used to develop gas sensors that monitors nitrogen in the soil which will contribute to precision agriculture.
| Apply for student award at which level: | PhD |
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| Consent on use of personal information: Abstract Submission | Yes, I ACCEPT |