title: Reproducible preparation of a stable polypyrrole-coated-silver nanoparticles decorated polypyrrole-coated-polycaprolactone-nanofiber-based cloth electrode for electrochemical sensor application.
abstract: A piece of conductive cloth has been successfully constructed from polypyrrole-coated silver nanoparticle (Ag@PPy) composites decorated on electrospun polycaprolactone (PCL) nanofibers that formed the core-shell structure of Ag@PPy/PCL@PPy via a photo-induced one-step redox reaction. The photochemical reaction method both accelerated the rate of formation of silver nanoparticles (Ag NPs) and enhanced the dispersion of Ag NPs at the surface of PCL@PPy film. The resulting Ag@PPy/PCL@PPy-based cloth was flexible enough to be cut and pasted onto a glass carbon electrode for the preparation of a biosensor. The resulting biosensor showed good electrochemical activity toward the reduction of H2O2 with low detection limit down to 1 μM (S/N = 3) and wide linear detection ranging from 0.01 mM to 3.5 mM (R(2) = 0.990). This sensor has been applied to detect the trace H2O2 residual in milk. The cloth electrode has been proved to exhibit long-term stability, high selectivity, and excellent reproducibility.
authors.affiliation: Department of Chemistry, Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, People's Republic of China.
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Wang
authors.forename: Guiting
authors.initials: G
authors.lastname: Liu
authors.forename: Zhenzhen
authors.initials: Z
authors.lastname: Wang
authors.forename: Feng
authors.initials: F
authors.lastname: Wang
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Guo
authors.forename: Ying
authors.initials: Y
authors.lastname: Wen
authors.forename: Haifeng
authors.initials: H
authors.lastname: Yang
mesh_terms: D000818:Animals; D058266:Dielectric Spectroscopy; D055664:Electrochemical Techniques / Q000295:instrumentation* / Q000379:methods; D004566:Electrodes; D004867:Equipment Design; D006861:Hydrogen Peroxide / Q000032:analysis*; D057230:Limit of Detection; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008892:Milk / Q000737:chemistry; D057139:Nanofibers / Q000737:chemistry* / Q000528:radiation effects; D011091:Polyesters; D011108:Polymers / Q000737:chemistry; D011758:Pyrroles / Q000737:chemistry; D015203:Reproducibility of Results; D012834:Silver / Q000737:chemistry; D013784:Textiles; D014466:Ultraviolet Rays; D014961:X-Ray Diffraction
chemical_list: D011091:Polyesters; D011108:Polymers; D011758:Pyrroles; C016240:polycaprolactone; C067635:polypyrrole; D012834:Silver; D006861:Hydrogen Peroxide