نتایج جستجو برای: polypyrrole nanofibers

تعداد نتایج: 9169  

Journal: :Physical chemistry chemical physics : PCCP 2014
Shanshan Xu Hongxia Yang Kaixi Wang Bo Wang Qun Xu

In this paper, supercritical carbon dioxide (SC CO2) was first reported to help prepare unique flexible free-standing graphene oxide/nanofiber (GC) films. A novel hierarchical superior electrode material with polypyrrole (PPy) deposited on GO/CNF-SC (GC-SC) films was prepared via an in situ polymerization process. Our experimental results indicate that SC CO2 can not only enlarge the space betw...

2016
Penghong Liu Shaohua Wu Yue Zhang Hongnan Zhang Xiaohong Qin

Highly orientated polypyrrole (PPy)-coated polyacrylonitrile (PAN) (PPy-PAN) nanofiber yarn was prepared with an electrospinning technique and in-situ chemical polymerization. The morphology and chemical structure of PPy-PAN nanofiber yarn was characterized by scanning electron microscopy (SEM), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and fou...

2015
Xueping Zhang Dong Liu Libo Li Tianyan You

We have proposed a novel free-standing nitrogen-doped carbon nanospheres@carbon nanofibers (NCNSs@CNFs) composite film with high processability for the investigation of the direct electron transfer (DET) of glucose oxidase (GOx) and the DET-based glucose biosensing. The composites were simply prepared by controlled thermal treatment of electrospun polypyrrole nanospheres doped polyacrylonitrile...

Journal: :Biomedical Microdevices 2009
Edward D. de Asis T. D. Barbara Nguyen-Vu Prabhu U. Arumugam Hua Chen Alan M. Cassell Russell J. Andrews Cary Y. Yang Jun Li

Long-term neuroprostheses for functional electrical stimulation must efficiently stimulate tissue without electrolyzing water and raising the extracellular pH to toxic levels. Comparison of the stimulation efficiency of tungsten wire electrodes (W wires), platinum microelectrode arrays (PtMEA), as-grown vertically aligned carbon nanofiber microbrush arrays (VACNF MBAs), and polypyrrole coated (...

2015
Bi-Yi Yang Yang Cao Fei-Fei Qi Xiao-Qing Li Qian Xu

A functionalized nylon6/polypyrrole core-shell nanofibers mat (PA6/PPy NFM) was prepared via situ polymerization on nylon6 electrospun nanofibers mat (PA6 NFM) template and used as an adsorbent to remove atrazine from aqueous solutions. The core-shell structure of PA6/PPy NFM can be clearly proved under scanning electron microscope (SEM), transmission electron microscopy (TEM), and X-ray photoe...

2013
S. MUNUSAMY Vidhya Sagar

Polypyrrole nanoparticles were synthesized by chemical polymerization method using ammonium persulphate as an oxidant. The synthesized polypyrrole nanoparticles were characterized by FT-IR, UV-Visible, FESEM and CV. The structure of polypyrrole nanoparticles were confirmed by FT-IR spectroscopy. The UV-Vis spectra of polypyrrole nanoparticles show π-π* and n-π* transitions. The morphological pr...

Journal: :Journal of Polymers and The Environment 2022

Constructing 3-D nanomaterial-based adsorbents with good mechanical properties has attracted increasing attention. This paper reports a simple strategy to prepare ultralight and superelastic aerogels as efficient for heavy metal Cr(VI) in wastewater by in-situ loading of polypyrrole on cellulose acetate nanofibers followed freeze-drying method. The obtained aerogel possesses obvious porous cros...

Abstract: In this study, we were investigated behavior the electrochemical reductionof nitrite at a hemoglobin (Hb) immobilized on glass carbon electrode (GCE) containingpolypyrol nanofiber (ppy) films. Polypyrrole (PPy) nanofibers have been constructed onGCE applying electrochemical technique, and can to deposit diverse polymers onminiaturized electrodes with this commo...

2014
Sangeeta Yadav Irfan Ahmad Mir

This study is purposed with the preparation of polyacrylamide/Polypyrrole hydrogel composite, in which the hydrogel of crosslinked polyacrylamide is a matrix and Polypyrrole is an electro-conducting component. The effects of synthesis conditions on the structure of the composite systems, their ability to swell in water, and mechanical characteristics are studied. The proposed synthesis procedur...

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