Hydrothermal synthesis of nanostructured titanium disulfide (TiS2) for detection of NO2 gas and its characterization study

• Published in: Journal of materials science. Materials in electronics Vol. 35; no. 19; p. 1341
• Main Authors: Wagh, T. S., Mane, S. H., Bansode, S. B., Deore, M. K.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-07-2024; Springer Nature B.V
• Subjects: Ammonia; Carbon dioxide; Characterization and Evaluation of Materials; Chemical composition; Chemical synthesis; Chemistry and Materials Science; Crystallites; Electron microscopy; Ethanol; Gases; Hydrogen sulfide; Liquefied gases; Liquefied petroleum gas; Materials Science; Microscopy; Nanostructure; Nitrogen dioxide; Operating temperature; Optical and Electronic Materials; Recovery time; Screen printing; Surface properties; Thick films; Titanium; Toxicity testing; Transition metal compounds; X-ray diffraction
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-024-12991-w

In the present work, A transition metal dichalcogenide (Titanium disulfide (TiS
2
)) has been synthesized by hydrothermal method with Titanium tetra isopropoxide (Ti (OCH (CH
3
)
2
)
4
) as a source of Titanium (Ti) and Thiourea (NH
2
·CS·NH
2
) as a source of Sulphur (S) at varying concentrations. The thick films of nano Titanium disulfide (TiS
2
) were fabricated by using a screen-printing technique. The structural properties of nanostructured TiS
2
were studied by X-ray diffraction (XRD). The XRD data confirm the hexagonal structure of nanostructured TiS
2
and the crystallite size was observed at 23 nm. Scanning electron microscopy (SEM) was used to analyze the morphological properties of the thick film of nanostructured TiS
2
that formed to determine the material's surface properties. The size of the TiS
2
nanoparticles was determined by transmission electron microscopy (TEM). The chemical composition of synthesized material was detected by energy dispersive spectroscopy analysis (EDAX). The prepared TiS
2
thick films were tested for various toxic gases such as Nitrogen dioxide (NO
2
), Hydrogen sulfide (H
2
S), Carbon dioxide (CO
2
), Ammonia (NH
3
), Liquefied petroleum gas (LPG), Ethanol (C
2
H
6
O) and Methanol (CH
3
OH) gases at different gases concentrations and different operating temperatures. The TiS
2
thick film sensor shows the highest sensitivity to NO
2
gas as compared to the other gases at an operating temperature of 160 °C with 600 ppm gas concentration. The prepared TiS
2
thick film sensor shows a rapid response and recovery time.