Carbon nanotubes-CuO/SnO2 based gas sensor for detecting H2S in low concentration.
作者： Jun Fan , Ping Liu , Xiaohong Chen , Honglei Zhou , Shaoli Fu
关键词: Carbon nanotube 、 Nanomaterials 、 Doping 、 Selectivity 、 Nanofiber 、 Annealing (metallurgy) 、 Composite number 、 Chemical engineering 、 Materials science 、 Electrospinning
摘要: Porous CuO/SnO2 nanofibers were prepared by co-dissolution and electrospinning, followed annealing, compounded with different amounts of carbon nanotubes (CNTs, 0-5 wt%). The performance the composite based sensor was tested in concentrations H2S range from 0.1 to 0.5 ppm. results showed that gas doped CNTs (CNTs-CuO/SnO2) has a low optimum operating temperature, 40 °C, good behavior detecting concentration H2S, short response recovery time (8.3 11.5 s, respectively). And at same time, compared other gases, 3 wt% CNTs-CuO/SnO2 nanomaterial had excellent selectivity concentrations. great advantages H2S.
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