title: SnO2 highly sensitive CO gas sensor based on quasi-molecular-imprinting mechanism design.
abstract: Response of highly sensitive SnO2 semiconductor carbon monoxide (CO) gas sensors based on target gas CO quasi-molecular-imprinting mechanism design is investigated with gas concentrations varied from 50 to 3000 ppm. SnO2 nanoparticles prepared via hydrothermal method and gas sensor film devices SC (exposed to the target gas CO for 12 h after the suspension coating of SnO2 film to be fully dried, design of quasi-molecular-imprinting mechanism, the experiment group) and SA (exposed to air after the suspension coating of SnO2 film to be fully dried, the comparison group) made from SnO2 nanoparticles are all characterized by XRD, SEM and BET surface area techniques, respectively. The gas response experimental results reveal that the sensor SC demonstrates quicker response and higher sensitivity than the sensor SA does. The results suggest that in addition to the transformation of gas sensor materials, surface area, and porous membrane devices, the Molecular Imprinting Theory is proved to be another way to promote the performance of gas sensors.
authors: Institute of Nanoscience and Nanotechnology, Department of Physical Science and Technology, Central China Normal University, Wuhan 430079, China. cjli@mails.ccnu.edu.cn.
authors: Chenjia
authors: C
authors: Li
authors: Institute of Nanoscience and Nanotechnology, Department of Physical Science and Technology, Central China Normal University, Wuhan 430079, China. lvmeng@mails.ccnu.edu.cn.
authors: Meng
authors: M
authors: Lv
authors: Institute of Nanoscience and Nanotechnology, Department of Physical Science and Technology, Central China Normal University, Wuhan 430079, China. bryanzuo@mails.ccnu.edu.cn.
authors: Jialin
authors: J
authors: Zuo
authors: Institute of Nanoscience and Nanotechnology, Department of Physical Science and Technology, Central China Normal University, Wuhan 430079, China. xthuang@phy.ccnu.edu.cn.
authors: Xintang
authors: X
authors: Huang
mesh_terms: D002248:Carbon Monoxide / Q000737:chemistry / Q000302:isolation & purification*; D005740:Gases / Q000737:chemistry / Q000302:isolation & purification*; D054802:Molecular Imprinting; D053758:Nanoparticles / Q000737:chemistry; D058998:Remote Sensing Technology / Q000295:instrumentation*; D012666:Semiconductors; D017971:Tin Compounds / Q000737:chemistry
chemical_list: D005740:Gases; D017971:Tin Compounds; D002248:Carbon Monoxide