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Zuliani, A., Bandelli, D., Chelazzi, D., Giorgi, R. and Baglioni, P. (2022) Environmentally Friendly ZnO/Castor Oil Polyurethane Composites for the Gas-Phase Adsorption of Acetic Acid. Journal of Colloid and Interface Science, 614, 451-459. https://doi.org/10.1016/j.jcis.2022.01.123

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• TITLE: SnO2 Modified by Quasi-Molecular Imprinting Method Gas Sensor for Formaldehyde

  AUTHORS: Wenfu Qin, Haiming Zhang

  KEYWORDS: Stannic Oxide, Formaldehyde Detection, Quasi-Molecular Imprinting

  JOURNAL NAME: Open Access Library Journal, Vol.10 No.3, March 28, 2023

  ABSTRACT: The stannic oxide (SnO2) was modified using Quasi-Molecular imprinting method. The morphology and structure of the modified SnO2 were characterized by X-ray diffraction (XRD), and transmission electron microscopy (SEM). The gas-sensing performance of the modified and unmodified SnO2 sensors was compared, and the mechanism of MIP technique in improving the gas-sensing performance of SnO2 was discussed. The selective test results showed that the improved SnO2 gas sensor exhibited good gas sensitivity to formaldehyde. The SnO2 gas sensor with good formaldehyde gas selectivity achieved precise measurement of continuous formaldehyde concentration. The response value to 100 ppm formaldehyde was 100°C at 230°C. The synthesis of SnO2 was discussed, and the mechanism of improving gas-sensing performance after modification was analyzed.