%0 Journal Article
%T SnO<sub>2</sub> Modified by Quasi-Molecular Imprinting Method Gas Sensor for Formaldehyde
%A Wenfu Qin
%A Haiming Zhang
%J Open Access Library Journal
%V 10
%N 3
%P 1-8
%@ 2333-9721
%D 2023
%I Open Access Library
%R 10.4236/oalib.1109970
%X The stannic oxide (SnO<sub>2</sub>) was modified using Quasi-Molecular imprinting method. The morphology and structure of the modified SnO<sub>2</sub> were characterized by X-ray diffraction (XRD), and transmission electron microscopy (SEM). The gas-sensing performance of the modified and unmodified SnO<sub>2</sub> sensors was compared, and the mechanism of MIP technique in improving the gas-sensing performance of SnO<sub>2</sub> was discussed. The selective test results showed that the improved SnO<sub>2</sub> gas sensor exhibited good gas sensitivity to formaldehyde. The SnO<sub>2</sub> gas sensor with good formaldehyde gas selectivity achieved precise measurement of continuous formaldehyde concentration. The response value to 100 ppm formaldehyde was 100&deg;C at 230&deg;C. The synthesis of SnO<sub>2</sub> was discussed, and the mechanism of improving gas-sensing performance after modification was analyzed.
%K Stannic Oxide
%K Formaldehyde Detection
%K Quasi-Molecular Imprinting
%U http://www.oalib.com/paper/6792297