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Sodium citrate doped polypyrrole/PS glass capillary tube sensor for ultra-small volume HCl gas detection.

RSC Adv

November 2019

Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China

A sodium citrate (SC) doped polypyrrole (PPy)/PS capillary sensor was prepared for ultra-small volume HCl gas detection. A PS film was formed in advance on the inner wall of a silica glass capillary tube, which enabled us to prepare a high-qualified PPy sensitive film inside the tube. The crystallinity, morphology, microstructure and carrier transport properties of the PPy film were characterized by XRD, SEM, FTIR and Hall effect system, respectively.

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