Graphite Nanosheet Exfoliation From Graphite Flakes Through Functionalization Using Phthalic Acid

• Autorzy: Kim J. H. , Lee J. H.

Identyfikatory

DOI

10.1515/amm-2015-0108

Warianty tytułu

PL

Złuszczanie nanoarkuszy grafitu z płatków grafitu przy użyciu kwasu ftalowego

• Języki publikacji: EN

Abstrakty

EN

In order to fabricate graphite nanosheets from graphite flakes, edge-functionalized graphite nanosheets were prepared by a functionalization method using phthalic acid as the molecule to be grafted. A polyphosphoric acid/P₂O₅ solution containing graphite and phthalic acid were heated at different temperatures for 72 h in a nitrogen atmosphere. It was confirmed by transmission electron microscopy and atomic force microscopy that the resultant phthalic acid-functionalized graphite nanosheets had a large surface area of 20.69 μm² in average and an average thickness of 1.39 nm. It was also found by X-ray diffractometry and Fourier transform infrared spectroscopy (FT-IR) analysis that the functionalization caused the formation of C=O bonds at the edges of the graphite nanosheets. The yield from this functionalization method was found to be dependent on the reaction temperature, only when it is between 70 and 130°C, because of the dehydration of phthalic acid at higher temperatures. This was confirmed by FT-IR analysis and the observation of low thermal energies at low temperatures.

Słowa kluczowe

EN

exfoliation; graphite nanosheet; functionalization; grafting molecule; Friedel-Crafts acylation

PL

złuszczanie; nanoarkusz grafitu; funkcjonalizacja; kwas ftalowy; acylowanie Friedela-Craftsa

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2015
• Tom: Vol. 60, iss. 2B
• Strony: 1251--1255
• Opis fizyczny: Bibliogr. 31 poz., rys.

Twórcy

autor

Kim J. H.

• Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 139-743, Korea

autor

Lee J. H.

• Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 139-743, Korea

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.