Bactericidal vertically aligned graphene networks derived from renewable precursor

Al-Jumaili, Ahmed; Zafar, Muhammad Adeel; Bazaka, Kateryna; Weerasinghe, Janith; Jacob, Mohan V.

doi:10.1016/j.cartre.2022.100157

Cited by 18 publications

(10 citation statements)

References 61 publications

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“…The high percentage of C 1s in the XPS spectrum reveals the high purity of the prepared graphene. The emergence of O 1s may be attributed to either the interaction of ambient oxygen with the active sites within the graphene lattice or due to oxygen-containing components in Pelargonium graveolens. , The minor Si 2p peak at a B.E. of 102.5 eV is ascribed to the substrate surface.…”

Section: Resultsmentioning

confidence: 99%

Improved Transfer-Free Sustainable Graphene Electrode using Silver Nanowires for Organic Photovoltaics

Kamel,

Stoppiello,

Jacob

2023

ACS Appl. Energy Mater.

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The hybridization of silver nanowires (AgNWs) and chemical vapor deposition (CVD)-based graphene is a promising strategy to produce efficient transparent conducting electrodes (TCEs) for organic photovoltaics (OPVs). In this work, we successfully demonstrate the coupling of transfer-free graphene fabricated on glass using plasma-enhanced CVD from a sustainable carbon source with AgNWs and hence avoided a multistep procedure to transfer graphene and damages. The resulting hybrid TCEs exhibit a lower sheet resistance compared to the pristine graphene. In addition, the growth of vertically oriented-graphene nanosheets suppresses the impact of the rough surface of AgNWs and increases the area of interface between the TCE and the active layer. OPV devices developed on the hybrid TCE with active layers, namely, P3HT: PCBM, P3HT: PC70BM, and PM6: Y6, show a comparable performance to the reference device. For instance, the P3HT:PCBM-based device on the hybrid electrode exhibits a higher fill factor (0.63) and a comparable power conversion efficiency (2.18%) to that of the ITO-counterpart (0.60 and 2.22%, respectively). Similarly, the PM6:Y6-device fabricated on the hybrid TCE demonstrates an efficiency (9.75%) analogous to that on ITO (10.3%). The present work demonstrates an auspicious platform toward sustainable and economic production of efficient transfer-free graphene-based TCEs for OPVs.

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Section: Resultsmentioning

confidence: 99%

Improved Transfer-Free Sustainable Graphene Electrode using Silver Nanowires for Organic Photovoltaics

Kamel,

Stoppiello,

Jacob

2023

ACS Appl. Energy Mater.

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“…Molecular docking studies have shown that seven layered graphene, that has an increasing number of edge sp3 –type carbon, providing greater curvature, further increases the surface reactivity responsible for high binding efficiency of SARS-CoV-2 virions [ 64 ]. Therefore the effect of graphene edges or planar surfaces seems quite different on the S protein, however on graphene deposited on surfaces, the availability of edges might be increased by laser printing, magnetic field, or plasma-enhanced chemical vapor deposition techniques that reorientate flakes [ [65] , [66] , [67] , [68] ].…”

Section: Mechanisms Of Sars-cov-2 Inactivation By Cbmmentioning

confidence: 99%

Nanotechnology in the COVID-19 era: Carbon-based nanomaterials as a promising solution

Papi

Spirito

Palmieri

2023

Carbon

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“…The as‐synthesized carbon dots with low cytotoxicity have been successfully applied in biological applications. Without the use of any catalysts, Al‐Jumaili et al 209 proved that the PECVD system with varying RF powers could harvest vertical graphene nanowalls and H 2 from an inherently volatile carbon precursor. Blanquet et al 109 introduced a pyrolysis‐non‐ThP‐catalytic system for the increased production of hydrogen‐rich gas and hydrocarbon tar from waste wood sawdust.…”

Section: Applications Of Reactive Plasmas On Up‐carbonizationmentioning

confidence: 99%

“…All the obtained results are vital to understanding practical process flow distributions and product separation mechanisms resulting from the transportation of biochar within biomass systems to improve their design. Al-Jumaili et al 209 used the PECVD system at different applied RF power to fabricate vertical graphene nanowalls on silicon and quartz substrates from an inherently volatile carbon precursor F I G U R E 14 Discharge plasmas for advanced carbon material synthesis from raw carbon-rich feedstocks. Carbon dots synthesis from egg protein using a DBD plasma: (A) schematic and reaction pathway and (B) FL characteristics.…”

Section: Plasma-made Functional Carbons From Bioresourcesmentioning

confidence: 99%

“…All the obtained results are vital to understanding practical process flow distributions and product separation mechanisms resulting from the transportation of biochar within biomass systems to improve their design. Al‐Jumaili et al 209 used the PECVD system at different applied RF power to fabricate vertical graphene nanowalls on silicon and quartz substrates from an inherently volatile carbon precursor without the use of any catalyst. Further biological studies suggested that significant morphological damage to bacterial cell walls by the sharp edges of graphene walls contributed to the cells appearing abnormal and deformed.…”

Section: Applications Of Reactive Plasmas On Up‐carbonizationmentioning

confidence: 99%

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Plasma‐electrified up‐carbonization for low‐carbon clean energy

et al. 2022

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Low-value, renewable, carbon-rich resources, with different biomass feedstocks and their derivatives as typical examples, represent virtually inexhaustive carbon sources and carbon-related energy on Earth. Upon conversion to higher-value forms (referred to as "up-carbonization" here), these abundant feedstocks provide viable opportunities for energy-rich fuels and sustainable platform chemicals production. However, many of the current methods for such up-carbonization still lack sufficient energy, cost, and material efficiency, which affect their economics and carbon-emissions footprint. With external electricity precisely delivered, discharge plasmas enable many stubborn reactions to occur under mild conditions, by creating locally intensified and highly reactive environments. This technology emerges as a novel, versatile technology platform for integrated or stand-alone conversion of carbon-rich resources. The plasma-based processes are compatible for integration with increasingly abundant and cost-effective renewable electricity, making the whole conversion carbon-neutral and further paving the plasma-electrified upcarbonization to be performance-, environment-, and economics-viable.Despite the chief interest in this emerging area, no review article brings together the state-of-the-art results from diverse disciplines and underlies basic mechanisms and chemistry underpinned. As such, this review aims to fill this gap and provide basic guidelines for future research and transformation, by providing an overview of the application of plasma techniques for carbon-rich resource conversion, with particular focus on the perspective of discharge plasmas, the fundamentals of why plasmas are particularly suited for upcarbonization, and featured examples of plasma-enabled resource valorization. With parallels drawn and specificity highlighted, we also discuss the technique shortcomings, current challenges, and research needs for future work.

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Bactericidal vertically aligned graphene networks derived from renewable precursor

Cited by 18 publications

References 61 publications

Improved Transfer-Free Sustainable Graphene Electrode using Silver Nanowires for Organic Photovoltaics

Improved Transfer-Free Sustainable Graphene Electrode using Silver Nanowires for Organic Photovoltaics

Nanotechnology in the COVID-19 era: Carbon-based nanomaterials as a promising solution

Plasma‐electrified up‐carbonization for low‐carbon clean energy

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