Highly hydrophilic and insulating fluorinated reduced graphene oxide

Samanta, Khokan; Some, Surajit; Kim, Young‐Min; Yoon, Yeoheung; Min, Mi‐Sook; Lee, Sae Mi; Park, Younghun; Lee, Hyoyoung

doi:10.1039/c3cc45376f

Cited by 62 publications

(59 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the exact structure of GO is not clear however a wide range of oxygen functional groups like epoxides, alcohols, ketone carbonyls and carboxylic group are present on both basal planes and edges of GO [3,4]. These groups probably enhance the hydrogen bonding between the functional group and water molecule or other organic molecule which lead to hydrophilic property of GO and introduce chances for modification of GO to improve its solubility in water and other organic solvents [5][6][7][8].…”

Section: Introductionmentioning

confidence: 97%

A new facile route for synthesizing of graphene oxide using mixture of sulfuric–nitric–phosphoric acids as intercalating agent

Panwar

Chattree

Pal

2015

Physica E: Low-dimensional Systems and Nanostructures

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 97%

A new facile route for synthesizing of graphene oxide using mixture of sulfuric–nitric–phosphoric acids as intercalating agent

Panwar

Chattree

Pal

2015

Physica E: Low-dimensional Systems and Nanostructures

View full text Add to dashboard Cite

“…The effective presence of the uorinated moieties onto the sidewalls of GO-silica was evaluated by using NMR equipped with a uorine-probe. Solid state 19 F NMR spectra of GOSF and 1, in Fig. 4b, show the presence of uorinated moieties in GOSF nanohybrid, in the same chemical shi range observed in the 19 F NMR spectrum of compound 1.…”

mentioning

confidence: 78%

“…Solid state 19 F NMR spectra of GOSF and 1, in Fig. 4b, show the presence of uorinated moieties in GOSF nanohybrid, in the same chemical shi range observed in the 19 F NMR spectrum of compound 1.…”

mentioning

confidence: 78%

“…19 F NMR spectra in solution were recorded on a BRUKER Avance 300 (282.3 MHz) spectrometer and were taken with CFCl 3 as internal standard (b before the multiplicity stands for broad signal). GC/MS determinations were carried out on a GC-MS Shimadzu QP-2010.…”

Section: Characterizationmentioning

confidence: 99%

“…Fig. 4 (a) 13 C{ 1 H} MAS NMR spectra of GO (black), GOS (blue) and GOSF (red) registered in direct (DP) and/or cross polarization (CP) (dotted line); (b) 19 F MAS NMR spectra of GOSF (red) and 1 (green). 5 reports the micrographs of a GO lamella before (top le) and aer (top right) silica-decoration, whereas the structure of the lasagna-like self-assembled lms is provided at different magnications in the underlying micrographs.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Synthesis of a fluorinated graphene oxide–silica nanohybrid: improving oxygen affinity

2016

View full text Add to dashboard Cite

An easy method to achieve a fluorinated graphene oxide-silica nanohybrid (GOSF) is presented. Graphene oxide (GO) was synthesized by Hummer's modified method, the GO-silica nanohybrid (GOS) was obtained via Fischer esterification, the fluorinated moiety (3-pentadecafluoroheptyl-5-perfluorophenyl-1,2,4-oxadiazole) was introduced by nucleophilic substitution operated by the hydroxyl functionalities onto the GOS surface. Full characterization of the new materials confirmed the formation of covalent bonds between the graphene oxide/silica hybrid matrix and the fluorinated moieties. The proposed methodology offers an easy way to get fluorinated carbon/silica hybrid nanomaterials avoiding the harsh reaction conditions usually involved in the preparation of fluorinated materials, and allowing the selective immobilization of specific fluorotails. Moreover, performed oxygen uptake and release kinetics showed that the introduction of fluorinated moieties increases the oxygen exchange, making the material interesting for prospective applications in the biomedical field, as oxygen delivery system, as filler for biocompatible materials, and in the preparation of membranes for the purification of water.

show abstract

Direct Synthesis of Fluorinated Carbon Materials via a Solid‐State Mechanochemical Reaction Between Graphite and PTFE

Jang

Zhao

Baek

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Fluorinated carbon materials (FCMs) have received significant attention, because of their exceptional stability, which is associated with the strong C‐F bonding, the strongest among carbon single bonds. However, the fluorination of carbon materials requires extremely toxic and moisture‐sensitive reagents, which makes it inapplicable for practical uses. Here, a straightforward and relatively safe method are reported for the scalable synthesis of FCMs, by mechanochemical depolymerization of polytetrafluoroethylene (PTFE) and fragmentation of graphite. The resultant FCMs are evaluated as anode materials for lithium‐ion batteries (LIBs). An optimized FCM delivered capacities as high as 951.6 and 329.3 mAh g −1 at 0.05 and 10 A g −1, respectively. It also demonstrated capacity retention as high as 76.6% even after 1000 cycles at 2.0 A g −1.

show abstract

Highly hydrophilic and insulating fluorinated reduced graphene oxide

Cited by 62 publications

References 20 publications

A new facile route for synthesizing of graphene oxide using mixture of sulfuric–nitric–phosphoric acids as intercalating agent

A new facile route for synthesizing of graphene oxide using mixture of sulfuric–nitric–phosphoric acids as intercalating agent

Synthesis of a fluorinated graphene oxide–silica nanohybrid: improving oxygen affinity

Direct Synthesis of Fluorinated Carbon Materials via a Solid‐State Mechanochemical Reaction Between Graphite and PTFE

Contact Info

Product

Resources

About