A new, fast and facile synthesis method for reduced graphene oxide in N,N-dimethylformamide

Tarcan, Raluca; Handrea-Dragan, Iuliana M.; Todor-Boer, Otto; Petrovai, Ioan; Farcău, Cosmin; Rusu, Mihai M.; Vulpoi, Adriana; Todea, M.; Aştilean, Simion; Botiz, Ioan

doi:10.1016/j.synthmet.2020.116576

Cited by 17 publications

(24 citation statements)

References 77 publications

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“…Tarcan et al reduced graphene oxide in N, N-dimethylformamide without using any reducing agents using the solvothermal microwave-assisted method. So, this method gives stable and highly concentrated dispersions of GO through partial removal of oxygenated groups from graphene oxide surface [74].…”

Section: Chemical Reductionmentioning

confidence: 99%

Graphene preparation and graphite exfoliation

Moosa¹,

Abed²

2021

Turk J Chem

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The synthesis of Graphene is critical to achieving its functions in practical applications. Different methods have been used to synthesis graphene, but graphite exfoliation is considered the simplest way to produce graphene and graphene oxide. In general, controlling the synthesis conditions to achieving the optimum yield, keeping the pristine structure to realize on-demand properties, minimum layers with the smallest lateral size, and minimum oxygen content are the most obstacles experienced by researchers. Each application requires a specific graphene model, graphene oxides GO, or even graphene intercalated compounds (GIC) depending on synthesis conditions and approach. This paper reviewed and summarized the most researches in this field and focusing on exfoliation methods.

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Section: Chemical Reductionmentioning

confidence: 99%

Graphene preparation and graphite exfoliation

Moosa¹,

Abed²

2021

Turk J Chem

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“…To this end, we demonstrate for the first time the improvement of the tribological behavior of a conventional fully synthetic engine oil 5W-40, by Shell, through the addition of rGO of different contents, in a range from 0.2 to 0.01 wt %, assisted by ultrasonication. rGO is an atomically thin sheet of carbon atoms, processed by the reduction of graphene oxide (GO), through various methods in order to reduce the oxygen functional groups [ 25 , 26 , 27 , 28 , 29 ], and is widely investigated for various emerging applications [ 30 , 31 , 32 , 33 ]. Here, we investigate the lubrication mechanism, which finally is due to the formation of a protecting layer on the sliding surfaces; carbon accumulation was detected on the surfaces, which originated from the rGO, and various elements such as Ca, Zn, S and P, because of other additives in the Shell 5W-40 engine oil.…”

Section: Introductionmentioning

confidence: 99%

Tribological Performance Investigation of a Commercial Engine Oil Incorporating Reduced Graphene Oxide as Additive

et al. 2021

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We investigated the tribological behavior of commercialized, fully synthetic engine oil upon the incorporation of reduced graphene oxide in seven different concentrations between 0.01 and 0.2 wt %. Stability of the prepared samples was assessed by turbidimetry and dynamic light scattering measurements, and their tribological properties through a reciprocating tribometer, using a steel ball on special cut steel blocks. The addition of 0.02 wt % of reduced graphene oxide led to an improvement of the tribological behavior compared to the pristine engine oil, by significantly lowering the friction coefficient by 5% in the boundary lubrication regime. Both the surfaces and the reduced graphene oxide additive were thoroughly characterized by microscopic and optical spectroscopy techniques. We also verified that a protective layer was formed between the worn surfaces, due to the presence of reduced graphene oxide. Carbon accumulation and various additive elements such as Ca, Zn, S and P were detected on the rubbing surfaces of both the ball and the block through energy-dispersive X-ray spectroscopy. Finally, it was shown that the wear scar diameter on the surface of the steel ball was lower by 3%, upon testing the engine oil sample containing reduced graphene oxide at concentration 0.02 wt %, compared to the control sample.

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“…The latter include nanostructures, such as carbon nanotubes (CNTs) [ 195 ], graphene [ 207 ], graphene oxide (GO) [ 208 ], reduced graphene oxide (RGO) [ 209 ] and others, and are well-known for their applications in biomedical engineering [ 210 ] and other biological applications [ 211 ], including drug delivery [ 212 , 213 ], sequential enrichment of peptides [ 214 ], osteoporotic bone regeneration [ 215 ], enzyme immobilization [ 216 ], biomaterials and bionics [ 217 ], generation of neurons [ 218 ], cellular migration [ 219 ], etc. Most of these nanomaterials can be routinely produced [ 220 , 221 ] or synthesized [ 222 , 223 , 224 ], even in common organic solvents used to also dissolve polymers [ 209 ] and possess important antimicrobial properties [ 225 , 226 , 227 , 228 , 229 , 230 ]. Such materials kill microbes through their physical interaction with the microbial surface leading to localized degradation of microbial cell walls [ 231 ] through wrapping, insertion or nano-knife-like processes [ 232 ].…”

Section: Antimicrobial Surfaces Generated From Polymer-based Nanocompositesmentioning

confidence: 99%

Antimicrobial Polymeric Structures Assembled on Surfaces

2021

Self Cite

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Pathogenic microbes are the main cause of various undesired infections in living organisms, including humans. Most of these infections are favored in hospital environments where humans are being treated with antibiotics and where some microbes succeed in developing resistance to such drugs. As a consequence, our society is currently researching for alternative, yet more efficient antimicrobial solutions. Certain natural and synthetic polymers are versatile materials that have already proved themselves to be highly suitable for the development of the next-generation of antimicrobial systems that can efficiently prevent and kill microbes in various environments. Here, we discuss the latest developments of polymeric structures, exhibiting (reinforced) antimicrobial attributes that can be assembled on surfaces and coatings either from synthetic polymers displaying antiadhesive and/or antimicrobial properties or from blends and nanocomposites based on such polymers.

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A new, fast and facile synthesis method for reduced graphene oxide in N,N-dimethylformamide

Cited by 17 publications

References 77 publications

Graphene preparation and graphite exfoliation

Graphene preparation and graphite exfoliation

Tribological Performance Investigation of a Commercial Engine Oil Incorporating Reduced Graphene Oxide as Additive

Antimicrobial Polymeric Structures Assembled on Surfaces

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