One-pot synthesis of amine-functionalized graphene oxide by microwave-assisted reactions: an outstanding alternative for supporting materials in supercapacitors.
| Autor: | Caliman CC; Department of Chemistry, Federal University of Espírito Santo - UFES Vitória 29075-910 ES Brazil cristianocaliman@gmail.com., Mesquita AF; Department of Chemistry, Federal University of Espírito Santo - UFES Vitória 29075-910 ES Brazil cristianocaliman@gmail.com., Cipriano DF; Laboratory of Carbon and Ceramic Materials, Department of Physics, Federal University of Espírito Santo - UFES Vitória 29075-910 ES Brazil., Freitas JCC; Laboratory of Carbon and Ceramic Materials, Department of Physics, Federal University of Espírito Santo - UFES Vitória 29075-910 ES Brazil., Cotta AAC; Nuclear Technology Development Center - CNEN-CDTN Belo Horizonte MG Brazil., Macedo WAA; Nuclear Technology Development Center - CNEN-CDTN Belo Horizonte MG Brazil., Porto AO; Department of Chemistry, Federal University of Minas Gerais, UFMG Belo Horizonte 31270-901 MG Brazil. |
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| Jazyk: | angličtina |
| Zdroj: | RSC advances [RSC Adv] 2018 Feb 07; Vol. 8 (11), pp. 6136-6145. Date of Electronic Publication: 2018 Feb 07 (Print Publication: 2018). |
| DOI: | 10.1039/c7ra13514a |
| Abstrakt: | A simple and straightforward method using microwave-assisted reactions is presented for the functionalization of graphene oxide with aromatic and non-aromatic amines, notedly dibenzylamine (DBA), p -phenylenediamine (PPD), diisopropylamine (DPA) and piperidine (PA). The as-synthesized amine-functionalized graphene oxide materials (amine-GO) were characterized using spectroscopic techniques including XRD, FTIR, 13 C NMR, XPS, TEM for imaging and thermogravimetric analysis (TGA). The characterization confirmed the functionalization for all amines, reaching relatively high surface nitrogen atomic concentrations of up to 8.8%. The investigations of electrochemical behavior for the amine-GOs show the significant improvement in GO's electrochemical properties through amine functionalization, exhibiting long life cycle stability and reaching specific capacitance values of up to 290 F g -1 and 260 F g -1 for GO-PA and GO-DPA samples, respectively, confirming their potential application as alternative supporting materials in supercapacitors. Competing Interests: There are no conflicts to declare. (This journal is © The Royal Society of Chemistry.) |
| Databáze: | MEDLINE |
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