Abstract
Abstract: The formaldehyde-assisted hydrothermal system is used to synthesize CeO2 nanorods by using precursor like cerium nitrate. Concentration of precursors and hydrothermal temperature affects the morphologies of these one-dimensional (1D) CeO2 Nanomaterial’s. This is achieved to control the reaction degree of Cannizzaro disproportionation tuned by Na/Ce molar ratio. The XRD, FESEM, FTIR and TEM these characterization techniques have been used to characterize the crystal structure and morphology of the as-synthesized CeO2. Humidity sensing characteristics such as hysteresis, repeatability, impedancerelative humidity (RH) characteristics, response and recovery behavior, and stability of CeO2 nanostructure have been investigated in detail for given precursor. The sensor showed rapid response and recovery, prominent stability, high humidity sensitivity, good repeatability and narrow hysteresis loop i.e. suitable candidate for the fabrication of the humidity sensors.
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