Stretched graphene nanosheets formed the “obstacle walls” in melamine sponge towards effective electromagnetic interference shielding applications

Guo, Tong; Chen, Xuelong; Su, Ling; Li, Changgeng; Huang, Xiaozhong; Tang, Xincun

doi:10.1016/j.matdes.2019.108029

Cited by 52 publications

(24 citation statements)

References 57 publications

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“…Graphene has a wide range of applications such as transparent conductive films, field effect transistors (FET), water purification, energy storage devices, and sensors due to its outstanding physical and chemical properties [ 9 , 10 , 11 , 12 , 13 ]. The first fabrication of single-layer graphene nanosheets was achieved by an exfoliation technique called the Scotch-tape method from bulk graphite [ 14 ] and by epitaxial chemical vapor deposition. However, the drawback of these methods is that they are not applicable for graphene manufacturing in industrial production [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide based coconut shell waste: synthesis by modified Hummers method and characterization

Sujiono

Zurnansyah

Zabrian

et al. 2020

Heliyon

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Graphene oxide (GO) based on coconut shell waste was successfully synthesized using a modified Hummers method, and the obtained GO was confirmed using XRD, FTIR, Raman spectroscopy, UV-Vis spectroscopy, and SEM-EDX. The XRD spectroscopy obtained the fractional content of the 2H graphite phase of 71.53%, 14.47% phosphorus, 10.02% calcium, and 3.97% potassium in coconut shell charcoal, where the GO sample tend to forms a phase of reduced graphene oxide (rGO). FTIR spectra shows compound functional groups of hydroxyl (- OH) at peak 1 (3449.92 cm −1 ), carboxyl (-COOH) at peak 2 (1719.42 cm −1 ) and peak 3 (1702.62 cm −1 ), and alcohol (C–OH) at peak 4 (1628.12 cm −1 ) and epoxy (CO) at peak 5 (1158.51 cm −1 ), which is similar to the GO synthesis from pure graphite. Raman spectroscopy analysis shows that the value of the I D /I G intensity ratio of the GO sample was 0.89 with a 2D single layer, and SEM results showed that surface morphology with an abundance of granular particles were found with different size distribution. The UV-visible results showed sufficient optical properties characterized by the spectrum, which formed because of the light absorption of the energy passed on the sample. The bandgap energy value of the sample obtained by the Tauc plot method was 4.38 eV, which indicates semiconductor properties.

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Section: Introductionmentioning

confidence: 99%

Graphene oxide based coconut shell waste: synthesis by modified Hummers method and characterization

Sujiono

Zurnansyah

Zabrian

et al. 2020

Heliyon

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“…[88,89] Their shielding mechanisms were studied and reported by Al-Saleh et al, where the authors concluded absorption as the primary and reflection as the secondary mechanism theories for CNT/polymer composites. [90] CNT/polymer composites [91] such as CNT/epoxy, [92] CNT/PVDF, [93] CNT/blends of polystyrene (PS) and poly(methyl methacrylate) (PMMA), [94] CNT/PANI, [95] CNT/polyethylene, [96] CNT/ PP, [97] CNT/polycarbonate, [98] CNT/polyetherimide, [99] CNT/PS, [100] CNT/PLA composites, [101,102] MWCNT/ WPU, [103] graphene/polymer composites, [104] graphene/ ceramic hybrids, [105] PVA/rGO@AC composite films, [106] carbon black/PVDF, [107] carbon black/PMMA, [108] and flexible cellulose nanofiber/PANI [109] have been studied extensively for EMI shielding. Al-Saleh et al [110] mentioned in their review that EMI shielding is one of the major applications of vapor-grown carbon nanofiber (CNF) polymer conductive composites.…”

Section: Carbon/polymer Compositesmentioning

confidence: 99%

Electromagnetic interference cognizance and potential of advanced polymer composites toward electromagnetic interference shielding: A review

Devi

Ray

2022

Polymer Engineering & Sci

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The exigency of electromagnetic shielding is derived from the electromagnetic pollution caused by the widespread use of electronic devices. Electromagnetic waves from innumerable electrical sources radiate in the atmosphere and generate electromagnetic interference (EMI). Such EMI can interrupt other instruments and threaten human health. Therefore, future designs of electronic devices, regardless of their size and use, necessitate advanced electromagnetic shielding materials and techniques that can limit or completely block the transmission of electromagnetic waves in the atmosphere. The purpose of this review is to investigate the use of polymer-based composites for EMI shielding and study their configurations. The objectives of this study and the societal and environmental impacts of electromagnetic waves are discussed in detail.The available reports, the worldwide contribution by researchers in the field, the limitations of the available materials, and the inventions required have directed our interest toward this area of research. The review summarizes EMI shielding cognizance, current research gaps, and future recommendations.

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“…12 To date, graphene materials with various nano/ microstructures or shapes have been built to achieve lightweight and high-performance EMI shielding, including aligned graphene, 13 three-dimensional (3D) graphene, 14 graphene sponges, 15,16 and/or their polymer composites. [17][18][19][20][21][22] Most previous studies have focused on the enhancement of EMI shielding efficiency (SE) on a laboratory scale. However, there have been few works describing large-scale fabrication (pilot scale or above) of graphene materials, which impedes their industrial application.…”

Section: Introductionmentioning

confidence: 99%

Large-scale preparation of graphene oxide film and its application for electromagnetic interference shielding

Zhang

Wang

et al. 2021

RSC Adv.

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Stretched graphene nanosheets formed the “obstacle walls” in melamine sponge towards effective electromagnetic interference shielding applications

Cited by 52 publications

References 57 publications

Graphene oxide based coconut shell waste: synthesis by modified Hummers method and characterization

Graphene oxide based coconut shell waste: synthesis by modified Hummers method and characterization

Electromagnetic interference cognizance and potential of advanced polymer composites toward electromagnetic interference shielding: A review

Large-scale preparation of graphene oxide film and its application for electromagnetic interference shielding

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