TY - JOUR ID - 137598 TI - Synthesis, structural evaluation of molybdenum oxide (MoO3) nanoparticles and its application as CO2 gas sensor JO - Asian Journal of Nanoscience and Materials JA - AJNM LA - en SN - 2645-775X AU - Manasa, M.V. AU - Devi, G. Sarala AD - Polymer and Functional Materials Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Habsiguda, Hyderabad -500007, India Y1 - 2021 PY - 2021 VL - 4 IS - 4 SP - 309 EP - 320 KW - MoO3 Nanoparticles KW - Hydrothermal protocol KW - XRD KW - XPS KW - TEM DO - 10.26655/AJNANOMAT.2021.4.6 N2 - In the present study we report a simple eco-friendly hydrothermal protocol for the synthesis of molybdenum oxide (MoO3) nanoparticles at various temperatures i.e., 80-200 °C at intervals of 20 °C designated as S1-S6 sequentially with time duration of 4 h for each batch. The synthesized samples were characterized by X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), Fourier Transform Infra-red (FTIR), UV- Visible Diffuse Reflectance (UV-Vis DRS), Laser Raman, Cyclic Voltammetry (CV), X-Ray Photoelectron Spectroscopy (XPS) and Transmission Electron Microscopy (TEM) to find out their elemental composition, structure, morphology and the optical band gap. The XRD analysis indicates well-crystallized orthorhombic structure with preferred orientation along (210) plane. The presence of O-Mo-O stretching vibration was observed by FTIR analysis The gas sensing studies were carried out to examine the material’s Sensitivity over a temperature range of 50oC to 400oC for various gas concentrations i.e. 200-1000 ppm of CO2 gas. The sensor had a Sensitivity of S=68.5% for S4 sample at an optimum temperature of 200 °C. The adsorption of desired gas on the material correlated well with the particle size of material at different temperature. The response and recovery times were 50 s and 40 s respectively. UR - https://www.ajnanomat.com/article_137598.html L1 - https://www.ajnanomat.com/article_137598_12b16f8fc0847e79c4f69950d954d767.pdf ER -