Synthesis and characterization of 2D MXene: Device fabrication for humidity sensing

• DOI: 10.1016/j.jsamd.2021.08.003
• Publication Date: 2021-08-20T16:15:23Z
• Authors: Yasir-Ul Haq; Rizwan Ullah; Sadaf Mazhar; Rozina Khattak; Awais Ali Qarni; Zeeshan-Ul Haq; Shahid Amin
• Keywords: Composite material; Alternative medicine; Two-Dimensional Transition Metal Carbides and Nitrides (MXenes); Materials Science; Wearable Nanogenerator Technology; Biomedical Engineering; FOS: Medical engineering; Quantum mechanics; 01 natural sciences; MXenes; Analytical Chemistry (journal); Fabrication; Engineering; Gas Sensing Technology and Materials; Materials Chemistry; FOS: Electrical engineering, electronic engineering, information engineering; Pathology; Stretchable Sensors; Electrical and Electronic Engineering; Optoelectronics; Materials of engineering and construction. Mechanics of materials; Spectroscopy; Humidity Sensors; Capacitive sensing; Two-Dimensional Materials; Chromatography; Physics; Fourier transform infrared spectroscopy; Relative humidity; Scanning electron microscope; Humidity; Optics; Chemical Sensors; Materials science; 0104 chemical sciences; Chemistry; Electrical engineering; Physical Sciences; TA401-492; Medicine; Thermodynamics; Infrared

High-performance MXene based capacitive humidity sensor is fabricated by a drop casting method. The material characterized Fourier Transform Infrared Spectrometry (FTIR), Energy Dispersive X-ray Spectroscopy (EDX), Scanning Electron Microscopy (SEM), and Diffraction (XRD). was tested at various frequencies (100 Hz−1 MHz) in broad relative (RH) detection range (13–97%). sensitivity of increased to 3400% 90% RH lower frequency Hz) whereas, the same % high such as 100 kHz, 250 1 MHz, decreased 13.5%, 8%, 3.9% respectively. A rapid response/recovery time (1.11/0.65 s) recorded which comparatively shorter than that higher (3.8/1.02 s). 2-dimensional (2D) structure enables detect minute variation 1%. These features allow monitor human respiration physical condition displaying specific patterns.