MXene/NiO Composites for Chemiresistive-Type Room Temperature Formaldehyde Sensor
نویسندگان
چکیده
In this work, MXene/NiO-composite-based formaldehyde (HCHO) sensing materials were successfully synthesized by an in situ precipitation method. The heterostructures between the MXene and NiO nanoparticles verified transmission electron microscopy (TEM), X-ray diffraction (XRD), photoelectron spectroscopy (XPS). HCHO performance of MXene/NiO-based chemiresistive-type sensors was investigated. Compared to pure materials, MXene/NiO-P2-based sensor gas at room temperature significantly enhanced formation MXene/NiO heterojunctions. response MXene/NiO-P2 50 ppm 8.8, which much higher than that NiO. At temperature, detectable concentration 1 ppm, recovery time 2 279 s 346 s, respectively. also exhibited a good selectivity long-term stability for 56 days. Fourier transform infrared (FTIR) spectra sensor, when exposed different times, investigated verify adsorption reaction products molecules.
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ژورنال
عنوان ژورنال: Chemosensors
سال: 2023
ISSN: ['2227-9040']
DOI: https://doi.org/10.3390/chemosensors11040258