Effect of Hydrogen in Size-Limited Growth of Graphene by Atmospheric Pressure Chemical Vapor Deposition

Zhang, Haoran; Zhang, Yanhui; Wang, Bin; Chen, Zhiying; Sui, Yanping; Zhang, Yaqian; Tang, Chenxiao; Zhu, Bo; Xie, Xiaoming; Yu, Guanghui; Jin, Zhi; Liu, Xinyu

doi:10.1007/s11664-014-3415-8

Cited by 15 publications

(3 citation statements)

References 6 publications

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“…Then, its quality depends on the nature of the substrate limiting its use in certain applications. Besides the need of catalyst, the addition of an excess of hydrogen is necessary to activate the catalysis [13][14][15] and high temperatures are also required, which implies a high economic cost. LPE is a substrate-free graphene synthesis method with a relatively low production costs [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Scalable graphene production from ethanol decomposition by microwave argon plasma torch

Melero

Rincón

Muñoz

et al. 2017

Plasma Phys. Control. Fusion

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A fast, efficient and simple method is presented for the production of high quality graphene on a large scale by using an atmospheric pressure plasma-based technique. This technique allows to obtain high quality graphene in powder in just one step, without the use of neither metal catalysts and nor specific substrate during the process. Moreover, the cost for graphene production is significantly reduced since the ethanol used as carbon source can be obtained from the fermentation of agricultural industries. The process provides an additional benefit contributing to the revalorization of waste in the production of a high-value added product like graphene. Thus, this work demonstrates the features of plasma technology as a low cost, efficient, clean and environmentally friendly route for production of high-quality graphene.

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Section: Introductionmentioning

confidence: 99%

Scalable graphene production from ethanol decomposition by microwave argon plasma torch

Melero

Rincón

Muñoz

et al. 2017

Plasma Phys. Control. Fusion

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show abstract

“…shown in Figure 9) with thermal release tape, R2R with epoxy [90], and bubbling transfer [91]. These developments have led to much more controllable graphene synthesis [19,33,89].…”

Section: Timeline Of Graphene Productionmentioning

confidence: 99%

Large-Area Synthesis and Growth Mechanism of Graphene by Chemical Vapor Deposition

Wang¹,

Vinodgopal²,

Dai³

2019

Chemical Vapor Deposition for Nanotechnology

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There has been continuous progress in the development of different synthesis methods to readily produce graphene at a lower cost. Compared with the other methods, chemical vapor deposition (CVD) is an effective and powerful method of producing graphene and has attracted increased attention during the last decade. In this way, we can obtain good uniformity with a multitude of domains, excellent quality, and large scale of the produced graphene. Meanwhile, it is also helping for large-area synthesis of single-crystal graphene. In the CVD method, precursors are typically absorbed on the surface followed by pyrolytic decomposition, which leads to the generation of absorption sites on the surface and promotes the growth of continuous thin films.

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“…In addition to the nature of thesubstrate, current research has been focused on exploringthe role of hydrogen and surface oxygen in thequality of grown graphene [33][34][35][36][37][38][39][40][41][42][43]. The role of hydrogen has not been clearly established yet.…”

Section: Introductionmentioning

confidence: 99%

Role of limited hydrogen and flow interval on the growth of single crystal to continuous graphene by low-pressure chemical vapor deposition

et al. 2017

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A method for defect-free large crystallite graphene growth remains unknown despite much research effort. In this work, we discuss the role of flow duration of H gas for the production of graphene as per requirement and production at a minimum flow rate considering the safety issue of hydrogen utilization. The copper substrate used for growth was treated for different time intervals (0 to 35 min) in H flow prior to growth. Structural and chemical changes occurring in the copper substrate surface were probed by grazing incidence x-ray diffraction and x-ray photoelectron spectroscopy. The results were correlated with the Raman spectroscopy data, which can quantify the quality of graphene. With increasing H flow interval, secondary nucleation sites were observed and growth favored few-layer graphene structures. The surface-adsorbed oxygen molecules and its conversion to an OH terminated surface with increasing hydrogen flow interval was found to be a key factor in enhancing nucleation density. The Stranski-Krastanov type of nucleation was observed for samples grown with different time intervals of H treatment, except 5 min of H flow prior to growth for which the Volmer-Weber type of growth favored monolayer graphene crystallite growth.

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Effect of Hydrogen in Size-Limited Growth of Graphene by Atmospheric Pressure Chemical Vapor Deposition

Cited by 15 publications

References 6 publications

Scalable graphene production from ethanol decomposition by microwave argon plasma torch

Scalable graphene production from ethanol decomposition by microwave argon plasma torch

Large-Area Synthesis and Growth Mechanism of Graphene by Chemical Vapor Deposition

Role of limited hydrogen and flow interval on the growth of single crystal to continuous graphene by low-pressure chemical vapor deposition

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