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Wrinkled graphene: synthesis and characterization of few layer graphene-like nanocarbons from kerosene

Ramya A. V., Mohan A. N., Manoj B.

Materials Science Poland

2016

Vol. 34, No. 2

330--336

Wrinkled graphene, derived from a facile thermal decomposition and chemical method, was subjected to various analysis techniques and the results have been reported here. Raman studies revealed the presence of highly graphitized amorphous carbon, which was evident by the appearance of five peaks in the deconvoluted first order spectrum. This result was very well corroborated by the XRD analysis. XPS and FT-IR spectra confirmed the incorporation of oxygen functionalities into the carbon backbone. AFM and SEM images of the sample disclosed a cluster of few-layer wrinkled graphene fragments. TEM images displayed a chain of nearly spherical aggregates of graphene, resembling nanohorns. The resistivity and sheet resistance of the sample were found to be low, making the obtained material a promising candidate for various device applications. Hence, kerosene soot proved to be an efficient precursor for facile synthesis of few layer graphene-like nanocarbon.

Perspektywy zastosowania nowych nanomateriałów węglowych w kontrolowanym uwalnianiu leków

Pacholczyk A.M., Terzyk A.P., Wiśniewski M.

Wiadomości Chemiczne

2010

[Z] 64, 1-2

23-44

Drug delivery systems have many advantages compared to typical therapy and due to progress in nanotechnology still new systems are proposed for this purpose. The major advantages are for example: applicability of drugs poorly soluble in water, controlled transport, combined therapy where one or more drugs can be simultaneously applied and generally, better efficiency. In this review we analyze a group of .model. drugs applied for testing of those systems [5] and pay also attention to other important drugs [7, 8, 13, 14]. The applicability of older (for example polymers [2]) as well as new nanomaterials (silicas [6, 7, 9, 10, 12.17], gels [6, 18]) in drug delivery systems is discussed. Special attention is paid to new carbon materials i.e. carbon nanotubes and carbon nanohorns (Figs. 1.3) [1, 2, 20.24, 28.41]. We report recent advances in this field showing the potential applicability of those materials in drug delivery systems. Special attention is paid to the systems where anti-cancer drug cisplatin was covalently bound to the edges or incorporated inside single-wall carbon nanohorns. We also discuss the applicability of buckysomes, especially in delivery of hydrophobic anti-cancer drugs. Finally reports about toxicity of new forms of carbon are discussed and it is shown that many of them lead to contradictory conclusions [22, 42.55].