Polyaniline nanostructures tuning with oxidants in interfacial polymerization system
| Autor: | Banglei Liang, Meifang Zhu, Fanxin Zeng, Tao Li, Na Liu, Zongyi Qin |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Absorption spectroscopy Composite number Microstructure Interfacial polymerization Composite oxidants symbols.namesake chemistry.chemical_compound Capacitive property chemistry Chemical engineering Polyaniline Polymer chemistry symbols lcsh:TA401-492 General Materials Science Ammonium persulfate lcsh:Materials of engineering and construction. Mechanics of materials Cyclic voltammetry Raman spectroscopy General Nanostructured polyaniline |
| Zdroj: | Progress in Natural Science: Materials International, Vol 25, Iss 5, Pp 512-519 (2015) |
| ISSN: | 1002-0071 |
| Popis: | Three kinds of nanostructured polyanilines (PANIs) were prepared through interfacial polymerization by using ammonium persulfate (APS) as a single oxidant, and APS/FeCl3, APS/K2Cr2O7 as composite oxidants, respectively. It is observed that faster formation process and higher yield of nanostructured PANIs could be achieved in the presence of FeCl3 and K2Cr2O7. The as-prepared PANIs were characterized by field emission scanning electron microscopy, ultraviolet–visible absorption spectroscopy, Fourier transform infrared and Raman spectroscopy, X-ray diffraction analysis and electrochemical measurements including cyclic voltammetry and galvanostatic charge/discharge measurement. The influence of composite oxidants on the morphology, microstructure, and electrical and electrochemical properties of PANIs was discussed. Interestingly, when APS/K2Cr2O7 was used as the composite oxidants, PANI exhibited petal-like structure with high yield of 57.35% instead of general nanofibrous morphology formed in interfacial polymerization. Compared with those nanofibrous PANIs obtained by using APS as a single oxidant or APS/FeCl3 as composite oxidants, petal-like PANIs exhibited the largest specific capacitance (692.4 F/g at scan rate of 5 mV/s) and highest cycle stability among them. It provides a new insight into the control of PANI nanostructures with high yield and energy storage ability by simply selecting suitable composite oxidants in interfacial polymerization. |
| Databáze: | OpenAIRE |
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