Effect of voltage applied for graphene oxide/latex nanocomposites produced via electrochemical exfoliation and its application as conductive electrodes

Nurhafizah, M.D.; Suriani, A. B.; Mohamed, Azmi; Soga, Tetsuo

doi:10.1016/j.diamond.2019.107624

Cited by 20 publications

(18 citation statements)

References 37 publications

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“…The use of rubber seed shell in the production of electrode materials has been reported in [27]. In the study, activated carbon derived from derived from rubber seed shell via pyrolysis process.…”

Section: In Electrode Materialsmentioning

confidence: 99%

Advances in natural rubber seed shell utilization in polymer technology

2020

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The valorization of rubber seed shell into useful materials for industrial applications in polymer technology is of great interest. The usefulness of this material is borne out of the ease of processing; it’s readily available at low or no cost, and less abrasive to equipment. Literature and research reports have shown that rubber seed shell has gained applications in the adhesive industry as reinforcing additive, in electrode manufacturing, as filler in polymer composites, as sorbent in the uptake of heavy metals during waste water treatments, as starting material in the production carbon materials for value added products for the industry. However, there are still outstanding prospects in the utilization of this material in various areas of polymer technology such as a lignocellulosic source for the production of biodegradable foams, polymer gels, second generation bio-plastics and biofuels, and as surfactants. This review examines the results of a retrospective and prospective study in polymer technology of the latent properties inherent in rubber seed shell with particular emphasis on its utilization in polymer technology.

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Section: In Electrode Materialsmentioning

confidence: 99%

Advances in natural rubber seed shell utilization in polymer technology

2020

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“…Since graphene exfoliation fabricated by a mechanical cleavage using adhesive tape from graphite, the preparation of carbon functional materials including graphene, graphene oxide, carbon nanotube, heterogeneous-atom-doped carbon, metal-filled carbon nanoparticle, and metallic oxide/carbon substrate by the means of graphite bulk exfoliation have gained a wide attention. − The layered graphite possesses strong in-plane covalent bonds and weak interlayer bonds coupled with van der Waals interactions, thus it could be easily delaminated down to thin carbon nanomaterials through the breaking of these weak bonds. Generally, there exist mechanical-based and chemical processes to exfoliate graphite.…”

Section: Introductionmentioning

confidence: 99%

“…Another common chemical method, referred to as electrochemical exfoliation, is considered as a potentially feasible, effective, and convenient strategy to exfoliate graphite due to its simple operation, scale-up production, scalability, and product controllability. , During the exfoliation process, anodic oxidation or cathodic reduction with a highly positive/negative charge is performed on the graphite electrode, which essentially leads the migration of various intercalants into the space between layers, inducing structural expansion and subsequent dissociation. , Electrochemical exfoliation in an aqueous solution has been investigated extensively. The frequently used electrolyte is mineral acids, such as H 2 SO 4 , H 3 PO 4 , HNO 3 , and HBF 4 , and inorganic salts, such as (NH 4 ) 2 SO 4 , (NH 4 ) 2 HPO 4 , and K 2 SO 4 . − Recent works also apply surfactants (e.g., sodium dodecyl sulfate and cetyltrimethylammonium bromide) as electrolytes or additives to exfoliate graphite as well as stabilize the products. ,, However, the conventionally exfoliated graphene products always feature large defects due to the inevitable overoxidation of graphite. For the anodic exfoliation, the continuous oxidation will lead to the degraded electrochemical intercalation and exfoliation .…”

Section: Introductionmentioning

confidence: 99%

Scalable Fabrication of Carbon Nanomaterials by Electrochemical Dual-Electrode Exfoliation of Graphite in Hydroxide Molten Salt

Yang

et al. 2020

Ind. Eng. Chem. Res.

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Simultaneous electroexfoliation of graphite on both cathode and anode in molten NaOH–KOH was proposed and found to be a feasible method for the mass production of carbon nanomaterials. During this electrolysis process, alkaline cations and hydroxide ions were intercalated into the bulk graphite and then discharged to generate alkaline metals and hydrogen at the cathode, and oxygen at the anode. The simultaneous intercalation on both electrodes and the escape of gas enhanced the exfoliation efficiency, leading to a high production rate of nanostructured carbon exceeding 26.9 g h–1. The four to seven layers of graphene nanosheets with negligible defect (I D/I G = 0.079) and low oxidation degree (C/O ratio = 20.32) were obtained through cathodic exfoliation, while the corresponding anodic exfoliation products featured more oxygen-containing functional groups (7.59%). This introduced method was beneficial for the mass production of carbon materials in a highly efficient way.

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“…Moreover, the use of surfactant in stabilizing the carbon nanostructures also gained much attention due to its natural role of surfactant [13,14]. Previous works have implemented the triple-tails surfactant, TC14 in various nanocomposites applications including CNTs/natural rubber latex and graphene-based rubber [15][16][17]. However, so far, there is no work reported on the use of triple-tails surfactant, TC14 in the magnetic properties study of GO incorporated with CNTs.…”

Section: Introductionmentioning

confidence: 99%

Magnetic properties of graphene oxide via a simple mixing with waste engine oil-based carbon nanotubes

Nurhafizah

2020

SN Appl. Sci.

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Graphene oxide (GO) was synthesized via a simple electrochemical exfoliation of graphite in a surfactant-containing aqueous solution. A novel custom-made surfactant, 1,4-bis (neopentyloxy)-3-(neopentyloxycarbonyl)-1,4-dioxobutane-2-sulfonate (TC14) was used to assist the exfoliation process. The structural and magnetic properties of prepared GO were examined using electron microscopies, micro-Raman, and Fourier transform infrared spectroscopies, and vibrating sample magnetometer (VSM). Room temperature VSM measurement showed a diamagnetic response of pristine GO under a high magnetic field. This indicated the low defect and the absence of any impurities in the synthesized GO. Simple mixing of GO and carbon nanotubes (CNTs) was also done to study their magnetic properties. CNTs were initially synthesized from waste engine oil using thermal chemical vapour deposition. It was found that the addition of magnetic CNTs has successfully induced the ferromagnetism in the GO sample. The saturation magnetization and average coercivity of GO/CNTs were observed to be 6.13 memu and 345.12 G, respectively. This study offers a low cost and simple method to induced magnetism in GO as compared to the common chemical modifications of GO.

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Effect of voltage applied for graphene oxide/latex nanocomposites produced via electrochemical exfoliation and its application as conductive electrodes

Cited by 20 publications

References 37 publications

Advances in natural rubber seed shell utilization in polymer technology

Advances in natural rubber seed shell utilization in polymer technology

Scalable Fabrication of Carbon Nanomaterials by Electrochemical Dual-Electrode Exfoliation of Graphite in Hydroxide Molten Salt

Magnetic properties of graphene oxide via a simple mixing with waste engine oil-based carbon nanotubes

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