Production of Reduced Graphene Oxide Platelets from Graphite Flakes Using the Fenton Reaction as an Alternative to Harmful Oxidizing Agents

Piñas, Jean Agustin Velásquez; Andrade, Tatiana Santos; Oliveira, Andreia T.; Salomão, Pedro Emílio Amador; Rodríguez, Mariandry; Silva, Adilson C.; Oliveira, Henrique S.; Monteiro, D. S.; Pereira, Márcio C.

doi:10.1155/2019/5736563

Cited by 11 publications

(13 citation statements)

References 42 publications

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“…The X-ray diffractogram of GO shows three main diffraction peaks, the most intense at 2Ɵ value of 9.55 is typical of GO [37] and the peaks at 18.30 and 25.35 correspond to reduced graphene oxide (Figure 3). The X-ray diffractograms of GP and MG are very similar and show the main diffraction peak at 2Ɵ value of 26.40-26.55 which corresponds to the (002) plane of graphite [38], and small diffractions peaks at 2Ɵ values of 004) and (110) planes of graphite [39][40][41] also appear.…”

Section: Characterization Of the Graphene Derivatives (Go Gp Mg)mentioning

confidence: 90%

Structure and adhesion properties of waterborne poly(urethane urea)s containing small amounts of different graphene derivatives

Tounici

Martı́n-Martı́nez

2021

Journal of Adhesion Science and Technology

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Waterborne poly(urethane urea) (PUDs) containing graphene derivatives with different morphologies and surface polarities were synthesized via in situ polymerization by using the acetone method. Small amounts (0.04-0.30 wt.%) of graphene oxide (GO), graphite nanoplatelets (GP) or milled graphite (MG) were mixed with polyadipate of 1,4-butanediol polyol and added during synthesis of the PUDs. The addition of graphene derivatives changed differently the degree of micro-phase separation of the poly(urethane urea)s (PUs) depending on the balance between the extent of covalent interactions between the surface functional groups on the graphene sheets and the isocyanate groups, and the number of stacked graphene sheets. Whereas MG mainly intercalated between the soft segments showing a typical behavior of nanofiller, GP and, particularly, GO showed different degrees of micro-phase separation due to more net covalent interactions with the poly(urethane urea) chains which caused higher crystallinity. The addition of graphene derivative decreased the glass transition temperature of the hard segments and increased the percentages of associated by hydrogen bond urethane and urea groups, more noticeably by adding GP and MG. Lower temperatures of decomposition and higher amounts of urethane and urea hard domains, and soft domains were found in PU þ GO and PU þ MG, and they showed an additional structural relaxation at 11-16 C. PU and PU þ GP had higher thermal stabilities than PU þ GO and PU þ MG and the addition of GP and, more markedly, GO imparted toughening to the poly(urethane urea). The Tpeel strength values were higher in the joints made with PUD þ GO due to the more net covalent interactions between the surface functional groups on the GO sheets and the poly(urethane urea) chains. On the other hand, the lap-shear strength of the joints made with PUD þ MG and, in less extent, with PUD þ GP noticeably increased.

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Section: Characterization Of the Graphene Derivatives (Go Gp Mg)mentioning

confidence: 90%

Structure and adhesion properties of waterborne poly(urethane urea)s containing small amounts of different graphene derivatives

Tounici

Martı́n-Martı́nez

2021

Journal of Adhesion Science and Technology

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“…Chemical exfoliation, a scalable technique, towards the production of reducing of GO (rGO) from GO, commonly sustains the solution at temperature between the range of 85-100 C (moisture) [30]. GO is an exfoliated form of graphite, which comprises various oxygen-containing functionalities and is usually synthesised via ultrasonication methods in deionised water condition.…”

Section: Chemical Exfoliation Methodsmentioning

confidence: 99%

Development of graphene based nanocomposites towards medical and biological applications

Mousavi

Low

Hashemi

et al. 2020

Artificial Cells, Nanomedicine, and Biotechnology

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Graphene and its derivative materials present high potential towards medical and biological applications, including drug delivery and bioimaging, due to their exceptional properties such as thermal conductivity and high specific surface area. The main focus of this work is to review the current development of graphene materials and the derivatives for biocompatible, bioimaging and drug delivery applications. Also, the synthesis methods with variation of graphene nanocomposites and the functionalisation will be further explained. For the graphene approaches, chemical vapour deposition (CVD) is the best-known technique to make high-quality graphene sheet by growth route with mass production. By considering the organic graphene nanocomposites, the biocompatibility and cytotoxic effects against graphene nanocomposites were evaluated for biomedical employments such as high quality bioimaging and effective drug delivery for cancer treatments. For example, graphene oxide incorporated with PEG and loaded with SN 38 for camptothecin analolgue as anticancer drug and revealed high cytotoxicity has an effect of 1000 times better effect than CPT in HCT-116 cells. Their drug delivery ability for both in-vivo and in-vitro applications compared to the controlled drugs such as doxorubicin (DOX) will be discussed accordingly. The graphene and its deriavatives possess some intriguing properties, which will lead to drug delivery due to strong biocompatibility and cyctotoxic effect towards biomedicine applications.

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“…These properties of GO were chosen in this investigation for their optimization with the Technique for Order of Preference by Similarity to the Ideal Solution (TOPSIS). As indicated in the mentioned studies, the GO production with the less defective reduced product was performed in hydrogen peroxide [4], and the indicated properties significantly impacted the quality of GO [5]. Moreover, the practical value of GO was revealed in killing bacteria related to its surface physical properties [6].…”

Section: Literature Reviewmentioning

confidence: 96%

“…The physicochemical, mechanical, and biological characteristics of GO, such as its activity with ferrous ions in hydrogen peroxide [4], rheological properties [5], antibiofilm activity [6], hemocompatibility [7,8], and the cost of its preparation [9] with or without polymers have been carried out, previously. These properties of GO were chosen in this investigation for their optimization with the Technique for Order of Preference by Similarity to the Ideal Solution (TOPSIS).…”

Section: Literature Reviewmentioning

confidence: 99%

Optimization of Graphene Oxide’s Characteristics with TOPSIS Using an Automated Decision-Making Process

Javanbakht

2023

JES

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The present study focuses on a new application of TOPSIS to predict and optimize graphene oxide’s characteristics. Although this carbon-based material has been investigated previously, its optimization with this method using an automated decision-making process has not been performed yet. The major problem in the design and analysis of this nanomaterial is the lack of information on comparing its characteristics, which has led to the use of diverse methods that have not been appropriately compared. Moreover, their advantages and inconveniences could be investigated better once this investigation provides information on optimizing its candidates. In the current research work, a novel automated decision-making process was used with the TOPSIS algorithm using the Łukasiewicz disjunction, which helped detect the confusion of properties and determine its impact on the rank of candidates. Several characteristics of graphene oxide, such as its antibiofilm activity, hemocompatibility, activity with ferrous ions in hydrogen peroxide, rheological properties, and the cost of its preparation, have been considered in its analysis with TOPSIS. The results of this study revealed that the consideration of the criteria of this nanomaterial as profit or cost criteria would impact the distances of candidates from the alternatives. Moreover, the ranks of the candidates changed when the rheological properties were considered differently in the data analysis. This investigation can help improve the use of this nanomaterial in academic and industrial investigations.

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Production of Reduced Graphene Oxide Platelets from Graphite Flakes Using the Fenton Reaction as an Alternative to Harmful Oxidizing Agents

Cited by 11 publications

References 42 publications

Structure and adhesion properties of waterborne poly(urethane urea)s containing small amounts of different graphene derivatives

Structure and adhesion properties of waterborne poly(urethane urea)s containing small amounts of different graphene derivatives

Development of graphene based nanocomposites towards medical and biological applications

Optimization of Graphene Oxide’s Characteristics with TOPSIS Using an Automated Decision-Making Process

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