Atmospheric pressure growth and optimization of graphene using liquid-injection chemical vapor deposition

Rao, Rahul; Weaver, Kent; Maruyama, Benji

doi:10.1166/mex.2015.1262

Cited by 10 publications

(4 citation statements)

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“…The growth mechanism is assumed to follow the well-accepted mechanism described in [22, 23]. Here, the decomposed C element is absorbed into the Cu substrate during the heating stage and then is desorbed back to the surface of Cu substrate to form graphene layer during the cooling stage.…”

Section: Methodsmentioning

confidence: 99%

“…Choi et al reported the growth in oxidized ambient by using a combination of ethanol and methanol as a carbon source [20]. Other similar liquid carbon sources such as benzene [21] and toluene [22] have also being studied. A motivated result on the growth of graphene from natural carbon sources such as camphor [23, 24] has also being reported.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Large-Area Single-Layer Graphene Using Refined Cooking Palm Oil on Copper Substrate by Spray Injector-Assisted CVD

2019

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We present a synthesis of large-area single-layer graphene on copper substrate using a refined cooking palm oil, a natural single carbon source, by a home-made spray injector-assisted chemical vapor deposition system. The effects of the distance between spray nozzle and substrate, and growth temperature are studied. From Raman mapping analysis, shorter distance of 1 cm and temperature of around 950 °C lead to the growth of large-area single-layer graphene with a coverage up to 97% of the measured area size of 6400 μm 2 . The crystallinity of the grown single layer graphene is relatively good due to high distribution percentage of FWHM values of 2D band that is below 30 cm −1 . However, the defect concentration is relatively high, and it suggests that a flash-cooling technique needs to be introduced.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Large-Area Single-Layer Graphene Using Refined Cooking Palm Oil on Copper Substrate by Spray Injector-Assisted CVD

2019

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“…It causes various mutagenesis being non soluble in physiological pH aqueous solution (e.g. graphene/CNTs) or because they cannot be handled …”

Section: Introductionmentioning

confidence: 99%

Graphene-based polymer nanocomposite membranes: a review

Miculescu

Thakur

Miculescu

et al. 2016

Polym. Adv. Technol.

186

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Ever since the discovery of graphene, its potential has been predicted for a number of applications in various fields such as electronics, sensors, environmental decontamination techniques, separations and biomedicine to name a few. Among various such fields, the research in graphene-based nanocomposites membranes is still in its infancy as there is not a significant research published in this field so far. However, interestingly this field is registering an exponentially upward trend recently. This review article provides a brief description of polymer nanocomposite membranes with graphene as one of the most indispensable components in the membranes. In this article, we describe in a systematic and comprehensive manner the most recent research published so far in the nanocomposite membranes with graphene and the most commonly used polymers namely the polysulfone and the cellulose derivatives. This article also describes the main applications of these polymeric membranes in the fuel cells and in water purification processes containing the current literature data as well as the authors' own research.

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“…The both Hydrogen (H2) and argon (Ar) gases were used for growing graphene films during fabricate a process [9][10][11][12][13][14][15][16][17][18][19][20][21]. A hydrogen gas acts as a catalyst for methane to be physically adsorbed on surface substrate for graphene growth, etching agent which controls the morphology of graphene during production and leads to crystallization of Cu foil while argon gas (Ar) acts as a carrier gas that provides an inert ambience [22][23][24][25]. In addition, the substrate that properly expected using to synthesis graphene, lowest surface roughness at a non-appeared contaminant as an oxide on surface and the large grain boundary on substrate (111) mechanism crystal orientation.…”

Section: List Of Figuresmentioning

confidence: 99%

Improving quality of CVD graphene grown on the copper foil by physical polishing electropolishing and thermal annealing pretreatment processes

Sirisom

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This study optimized the pretreatment processes (physical polishing (PP), electropolishing (EP), and thermal annealing) for high-quality graphene growth on thin copper (Cu) foils. PP using Brasso solvent was applied to smoothen the substrate surface, followed by EP with H3PO4�to reduce rolling lines and surface contamination. The EP process involved different H3PO4�concentrations (30-60%)�and etching times (60-120�seconds). After thermal annealing at�860-940�?C, graphene growth was performed using direct-liquid-injection chemical-vapor deposition with cyclohexane (C6H12)�as the carbon precursor and nitrogen as the carrier gas. The optimized conditions involved PP and EP with�45%�H3PO4�concentration and�90�seconds etching. At an annealing temperature of�900�?C, monolayer graphene was successfully formed. Lower cyclohexane flow rates enhanced graphene quality, achieving monolayer films with an I2D/IG ratio of�2.76�for a�10-minute growth. By optimizing growth conditions, the graphene film properties were improved. These findings highlight the importance of annealing temperature and cyclohexane flow rates in controlling graphene film quality on Cu foils, providing valuable insights for graphene synthesis in various applications.

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Atmospheric pressure growth and optimization of graphene using liquid-injection chemical vapor deposition

Cited by 10 publications

References 0 publications

Synthesis of Large-Area Single-Layer Graphene Using Refined Cooking Palm Oil on Copper Substrate by Spray Injector-Assisted CVD

Synthesis of Large-Area Single-Layer Graphene Using Refined Cooking Palm Oil on Copper Substrate by Spray Injector-Assisted CVD

Graphene-based polymer nanocomposite membranes: a review

Improving quality of CVD graphene grown on the copper foil by physical polishing electropolishing and thermal annealing pretreatment processes

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