Synthesis of ZrSe۲ Nanoparticles by Hydrothermal Method for Gas Sensing Applications

Nowadays metal oxide nanoparticles and transition metal dichalcogenides play a vital role in various areas like optical sensors, solar cells, energy storage devices, gas sensors and biomedical applications. In the current research work, we synthesized ZrSe۲ nanoparticles by hydrothermal method. The ZrSe۲ nanoparticles were synthesis using precursors such as ZrOCl۲.۸H۲O and Na۲SeO۳.۵H۲O in the addition of surfactant cetyl trimethyl ammonia bromide CTAB and reductant hydrazine hydrate, respectively. By using synthesized ZrSe۲ nanopowder thick films were developed on a glass substrate using the screen printing method. The structural properties of ZrSe۲ powder were studied by X-ray diffraction (XRD). The X-ray diffraction analysis revealed that the hexagonal crystal structure and crystalline size were found to be ۵۵.۷۵ nm. The thick films of ZrSe۲ were characterized by field emission scanning electron microscopy (FESEM) and energy dispersive X-ray analysis (EDAX). The surface morphological analysis of ZrSe۲ nanostructured thick film shows hierarchical nanoparticles. The energy band gap of synthesized powder was calculated using a Tauc plot from UV-visible spectroscopy. The gas-sensing properties of ZrSe۲ thick films were studied. The developed ZrSe۲ thick films show maximum sensitivity and selectivity towards the ammonia NH۳ gas at an operating temperature of ۱۲۰ °C and the gas concentration was ۵۰۰ ppm. The developed thick films show fast response and recovery time.Nowadays metal oxide nanoparticles and transition metal dichalcogenides play a vital role in various areas like optical sensors, solar cells, energy storage devices, gas sensors and biomedical applications. In the current research work, we synthesized ZrSe۲ nanoparticles by hydrothermal method. The ZrSe۲ nanoparticles were synthesis using precursors such as ZrOCl۲.۸H۲O and Na۲SeO۳.۵H۲O in the addition of surfactant cetyl trimethyl ammonia bromide CTAB and reductant hydrazine hydrate, respectively. By using synthesized ZrSe۲ nanopowder thick films were developed on a glass substrate using the screen printing method. The structural properties of ZrSe۲ powder were studied by X-ray diffraction (XRD). The X-ray diffraction analysis revealed that the hexagonal crystal structure and crystalline size were found to be ۵۵.۷۵ nm. The thick films of ZrSe۲ were characterized by field emission scanning electron microscopy (FESEM) and energy dispersive X-ray analysis (EDAX). The surface morphological analysis of ZrSe۲ nanostructured thick film shows hierarchical nanoparticles. The energy band gap of synthesized powder was calculated using a Tauc plot from UV-visible spectroscopy. The gas-sensing properties of ZrSe۲ thick films were studied. The developed ZrSe۲ thick films show maximum sensitivity and selectivity towards the ammonia NH۳ gas at an operating temperature of ۱۲۰ °C and the gas concentration was ۵۰۰ ppm. The developed thick films show fast response and recovery time.

Keywords:

Hydrothermal method , Transition metal dichalcogenides , Thick films , Gassensor , Tauc