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Effect of Surfactants on the Microstructures of Hierarchical SnO Blooming Nanoflowers and their Gas-Sensing Properties. | LitMetric

Effect of Surfactants on the Microstructures of Hierarchical SnO Blooming Nanoflowers and their Gas-Sensing Properties.

Nanoscale Res Lett

Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo, 255000, China.

Published: August 2018

Hierarchical SnO blooming nanoflowers were successfully fabricated via a simple yet facile hydrothermal method with the help of different surfactants. Here we focus on exploring the promotion effects of surfactants on the self-assembly of 2D SnO nanosheets into 3D SnO flower-like structures as well as their gas-sensing performances. The polyporous flower-like SnO sensor exhibits excellent gas-sensing performances to ethanol and HS gas due to high porosity when polyvinyl pyrrolidone is added into the precursor solution as a surfactant. The response/recovery times were about 5 s/8 s for 100 ppm ethanol and 4 s/20 s for 100 ppm HS, respectively. Especially, the maximum response value of HS is estimated to be 368 at 180 °C, which is one or two orders of magnitude higher than that of other test gases in this study. That indicates that the sensor fabricated with the help of polyvinyl pyrrolidone has good selectivity to HS.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6104466PMC
http://dx.doi.org/10.1186/s11671-018-2656-5DOI Listing

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