ESTUDO ATRAVÉS DE RMN DE 13C NO ESTADO SÓLIDO SOBRE A SÍNTESE DE OXIDO DE GRAFITE UTILIZANDO DIFERENTES PRECURSORES GRAFÍTICOS
The influence of the structural and microstructural characteristics of graphitic precursors on the production of graphite oxide (GO) is investigated in the present work. Six different graphitic precursors were used to produce GO following a modified Hummers method, namely: natural graphite, commerci...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
|
| Series: | Química Nova |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422017001001164&lng=en&tlng=en |
| _version_ | 1818544738169520128 |
|---|---|
| author | Mariana A. Vieira Carolina Maria R. Frasson Tainara Luiza G. Costa Daniel F. Cipriano Miguel A. Schettino Jr. Alfredo G. Cunha Jair C. C. Freitas |
| author_facet | Mariana A. Vieira Carolina Maria R. Frasson Tainara Luiza G. Costa Daniel F. Cipriano Miguel A. Schettino Jr. Alfredo G. Cunha Jair C. C. Freitas |
| author_sort | Mariana A. Vieira |
| collection | DOAJ |
| description | The influence of the structural and microstructural characteristics of graphitic precursors on the production of graphite oxide (GO) is investigated in the present work. Six different graphitic precursors were used to produce GO following a modified Hummers method, namely: natural graphite, commercial lubricant graphite, milled graphite, graphite flakes, high-purity graphite and graphite recycled from Li-ion batteries. The products were characterized by X-ray diffraction (XRD), thermogravimetry, solid-state 13C nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM). 13C NMR spectra revealed the presence of epoxy, hydroxyl, carbonyl and lactol groups in the synthesized GOs. However, the oxidation degree of each product was found to be dependent on the average crystallite size (Lc) and particle size of the graphitic precursors, with the best GO samples being produced from the milled graphite and the graphite recycled from ion-Li batteries. These results were rationalized in terms of the structural and microstructural differences among the graphitic precursors, as revealed by the XRD patterns and SEM images, evidencing the importance of the correct choice of the precursor aiming the achievement of a well-developed structure for the GO product. |
| first_indexed | 2024-12-11T22:52:22Z |
| format | Article |
| id | doaj.art-245583e89bb94c078a5a4e4bbda84287 |
| institution | Directory Open Access Journal |
| issn | 1678-7064 |
| language | English |
| last_indexed | 2024-12-11T22:52:22Z |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-245583e89bb94c078a5a4e4bbda842872022-12-22T00:47:24ZengSociedade Brasileira de QuímicaQuímica Nova1678-706440101164117110.21577/0100-4042.20170129S0100-40422017001001164ESTUDO ATRAVÉS DE RMN DE 13C NO ESTADO SÓLIDO SOBRE A SÍNTESE DE OXIDO DE GRAFITE UTILIZANDO DIFERENTES PRECURSORES GRAFÍTICOSMariana A. VieiraCarolina Maria R. FrassonTainara Luiza G. CostaDaniel F. CiprianoMiguel A. Schettino Jr.Alfredo G. CunhaJair C. C. FreitasThe influence of the structural and microstructural characteristics of graphitic precursors on the production of graphite oxide (GO) is investigated in the present work. Six different graphitic precursors were used to produce GO following a modified Hummers method, namely: natural graphite, commercial lubricant graphite, milled graphite, graphite flakes, high-purity graphite and graphite recycled from Li-ion batteries. The products were characterized by X-ray diffraction (XRD), thermogravimetry, solid-state 13C nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM). 13C NMR spectra revealed the presence of epoxy, hydroxyl, carbonyl and lactol groups in the synthesized GOs. However, the oxidation degree of each product was found to be dependent on the average crystallite size (Lc) and particle size of the graphitic precursors, with the best GO samples being produced from the milled graphite and the graphite recycled from ion-Li batteries. These results were rationalized in terms of the structural and microstructural differences among the graphitic precursors, as revealed by the XRD patterns and SEM images, evidencing the importance of the correct choice of the precursor aiming the achievement of a well-developed structure for the GO product.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422017001001164&lng=en&tlng=engraphite oxiderecycled graphiteion-Li batterysolid-state 13C NMR |
| spellingShingle | Mariana A. Vieira Carolina Maria R. Frasson Tainara Luiza G. Costa Daniel F. Cipriano Miguel A. Schettino Jr. Alfredo G. Cunha Jair C. C. Freitas ESTUDO ATRAVÉS DE RMN DE 13C NO ESTADO SÓLIDO SOBRE A SÍNTESE DE OXIDO DE GRAFITE UTILIZANDO DIFERENTES PRECURSORES GRAFÍTICOS Química Nova graphite oxide recycled graphite ion-Li battery solid-state 13C NMR |
| title | ESTUDO ATRAVÉS DE RMN DE 13C NO ESTADO SÓLIDO SOBRE A SÍNTESE DE OXIDO DE GRAFITE UTILIZANDO DIFERENTES PRECURSORES GRAFÍTICOS |
| title_full | ESTUDO ATRAVÉS DE RMN DE 13C NO ESTADO SÓLIDO SOBRE A SÍNTESE DE OXIDO DE GRAFITE UTILIZANDO DIFERENTES PRECURSORES GRAFÍTICOS |
| title_fullStr | ESTUDO ATRAVÉS DE RMN DE 13C NO ESTADO SÓLIDO SOBRE A SÍNTESE DE OXIDO DE GRAFITE UTILIZANDO DIFERENTES PRECURSORES GRAFÍTICOS |
| title_full_unstemmed | ESTUDO ATRAVÉS DE RMN DE 13C NO ESTADO SÓLIDO SOBRE A SÍNTESE DE OXIDO DE GRAFITE UTILIZANDO DIFERENTES PRECURSORES GRAFÍTICOS |
| title_short | ESTUDO ATRAVÉS DE RMN DE 13C NO ESTADO SÓLIDO SOBRE A SÍNTESE DE OXIDO DE GRAFITE UTILIZANDO DIFERENTES PRECURSORES GRAFÍTICOS |
| title_sort | estudo atraves de rmn de 13c no estado solido sobre a sintese de oxido de grafite utilizando diferentes precursores grafiticos |
| topic | graphite oxide recycled graphite ion-Li battery solid-state 13C NMR |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422017001001164&lng=en&tlng=en |
| work_keys_str_mv | AT marianaavieira estudoatravesdermnde13cnoestadosolidosobreasintesedeoxidodegrafiteutilizandodiferentesprecursoresgrafiticos AT carolinamariarfrasson estudoatravesdermnde13cnoestadosolidosobreasintesedeoxidodegrafiteutilizandodiferentesprecursoresgrafiticos AT tainaraluizagcosta estudoatravesdermnde13cnoestadosolidosobreasintesedeoxidodegrafiteutilizandodiferentesprecursoresgrafiticos AT danielfcipriano estudoatravesdermnde13cnoestadosolidosobreasintesedeoxidodegrafiteutilizandodiferentesprecursoresgrafiticos AT miguelaschettinojr estudoatravesdermnde13cnoestadosolidosobreasintesedeoxidodegrafiteutilizandodiferentesprecursoresgrafiticos AT alfredogcunha estudoatravesdermnde13cnoestadosolidosobreasintesedeoxidodegrafiteutilizandodiferentesprecursoresgrafiticos AT jairccfreitas estudoatravesdermnde13cnoestadosolidosobreasintesedeoxidodegrafiteutilizandodiferentesprecursoresgrafiticos |