Lightweight and Easily Foldable MCMB-MWCNTs Composite Paper with Exceptional Electromagnetic Interference Shielding

Chaudhary, Amit; Kumari, Saroj; Kumar, Rajeev; Teotia, Satish; Singh, Bhanu Pratap; Singh, Awantika; Dhawan, S. K.; Dhakate, Sanjay R.

doi:10.1021/acsami.5b12334

Cited by 196 publications

(68 citation statements)

References 46 publications

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“…5d). 1,4,5,11,13,19,20,28,31,32,[35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] This nding is noteworthy because the LG-4 lm would satisfy several commercial requirements for an EMI shielding material, for example ultrahigh EMI SE (73.7 dB), low density (2.05 g cm À3 ), ultrathin thickness (0.014 mm), anti-corrosion, high exibility and easy fabrication.…”

Section: Morphologies Of Graphene Lmsmentioning

confidence: 99%

Ultrathin flexible graphene films with high thermal conductivity and excellent EMI shielding performance using large-sized graphene oxide flakes

Lin

Zhang

et al. 2019

RSC Adv.

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Section: Morphologies Of Graphene Lmsmentioning

confidence: 99%

Ultrathin flexible graphene films with high thermal conductivity and excellent EMI shielding performance using large-sized graphene oxide flakes

Lin

Zhang

et al. 2019

RSC Adv.

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“…Human health concerns must also be considered as a consequence of exposure to EMI pollution . Polymer nanocomposites with well‐dispersed conductive nanofillers have been proposed as good candidates for EMI shielding materials owing to their good processability, light weight, and low cost . Numerous conductive fillers, such as graphene, carbon nanotubes (CNTs), and metal nanoparticles/nanowires have been studied to fabricate polymer nanocomposites for EMI shielding application.…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotube/ZnO nanowire/polyvinylidene fluoride hybrid nanocomposites for enhanced electromagnetic interference shielding

Zeraati

Sundararaj

2020

Can J Chem Eng

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Lightweight and flexible materials with high conductivity and low thickness are highly desirable for electromagnetic interference (EMI) shielding applications.Developing hybrid nanostructured materials, which combine the properties of their constituents, is an excellent strategy to create highly effective EMI shields. In this study, we report a hybrid polymer nanocomposite composed of carbon nanotube (CNT) and ZnO nanowire (ZnONW) for EMI shielding applications. We found that the combination of a conductive filler (CNT) and a dielectric filler (ZnONW) with a similar geometry is an effective method to fabricate nanocomposites with enhanced EMI shielding. We achieved high average shielding effectiveness of 27.3 dB (with a maximum of 41 dB at 10.2 GHz) for a sample of CNT:ZnONW (5.0:2.5 wt%) with only 1.1 mm thickness, which is among the best-reported values in the literature for polymer nanocomposites with similar filler loading and thickness. This performance originates from the excellent electrical conductivity and dielectric properties of hybrid nanocomposites, combined with the geometry of ZnO nanowire. A comparison of the shielding properties of the developed hybrid nanocomposites with the literature implies that they are promising functional materials in the world of EMI shielding applications. K E Y W O R D Sdielectric properties, electrical conductivity, electromagnetic interference (EMI) shielding, hybrid nanocomposites

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“…By increasing the activation temperature from 1073 to 1273 K (Table 2), the yield of porous carbons with physical activation decreased from 16% to 9.3%, as a result of CO2 gas reacting with the walls of the pores (Equation (1)) [34]. In addition, the higher the burn-off temperature, the wider the pore size distribution becomes, as mentioned above.…”

Section: Effect Of Physical and Chemical Activation On The Textural Pmentioning

confidence: 86%

Highly Selective CO2 Capture on Waste Polyurethane Foam-Based Activated Carbon

et al. 2019

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Low-cost activated carbons were prepared from waste polyurethane foam by physical activation with CO 2 for the first time and chemical activation with Ca(OH) 2 , NaOH, or KOH. The activation conditions were optimized to produce microporous carbons with high CO 2 adsorption capacity and CO 2 /N 2 selectivity. The sample prepared by physical activation showed CO 2 /N 2 selectivity of up to 24, much higher than that of chemical activation. This is mainly due to the narrower microporosity and the rich N content produced during the physical activation process. However, physical activation samples showed inferior textural properties compared to chemical activation samples and led to a lower CO 2 uptake of 3.37 mmol·g −1 at 273 K. Porous carbons obtained by chemical activation showed a high CO 2 uptake of 5.85 mmol·g −1 at 273 K, comparable to the optimum activated carbon materials prepared from other wastes. This is mainly attributed to large volumes of ultra-micropores (<1 nm) up to 0.212 cm 3 ·g −1 and a high surface area of 1360 m 2 ·g −1 . Furthermore, in consideration of the presence of fewer contaminants, lower weight losses of physical activation samples, and the excellent recyclability of both physical-and chemical-activated samples, the waste polyurethane foam-based carbon materials exhibited potential application prospects in CO 2 capture.Processes 2019, 7, 592 2 of 15 (Carbon Capture, Utilization and Storage) technologies are intended to reduce CO 2 emission, reaching the Paris Agreement targets is still a serious challenge. Nevertheless, in these techniques, adsorption is considered to be the approach with the most potential, since it involves simple operation and has low-cost and energy-saving benefits [8].Many adsorbents have been intensively studied for CO 2 capture, including zeolites [9], metal-organic frameworks [10], metallic oxide [11], graphene-based adsorbents [12], and porous carbon materials [13]. For future commercialization application, the selection of adsorbents is strongly dependent not only on CO 2 capture capacity but also the cost, including the availability of the raw materials, the preparation of the adsorbent, and the operating costs. Porous carbons (PCs) are considered to be the most competitive candidates due to their controlled pore structure, low cost, stable physicochemical properties, ease of chemical modification, and regeneration [14]. Micropore sizes smaller than 1 nm are beneficial to high-density CO 2 filling at ambient conditions [15,16]. In addition, a high surface area (>1000 m 2 ·g −1 ) and a rich nitrogen environment can improve the CO 2 adsorption capacity.The route of preparation, especially activation, will significantly affect the performance of CO 2 absorption. The porous carbons can be activated either by physical or chemical methods. Physical activation is usually achieved by carbonization in an inert atmosphere followed by oxidizing in CO 2 [17], steam [18], or air. In this way, activated carbons with a narrower pore size distribution can be obtained [19]. Gene...

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Lightweight and Easily Foldable MCMB-MWCNTs Composite Paper with Exceptional Electromagnetic Interference Shielding

Cited by 196 publications

References 46 publications

Ultrathin flexible graphene films with high thermal conductivity and excellent EMI shielding performance using large-sized graphene oxide flakes

Ultrathin flexible graphene films with high thermal conductivity and excellent EMI shielding performance using large-sized graphene oxide flakes

Carbon nanotube/ZnO nanowire/polyvinylidene fluoride hybrid nanocomposites for enhanced electromagnetic interference shielding

Highly Selective CO2 Capture on Waste Polyurethane Foam-Based Activated Carbon

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