Low pressure chemical vapor deposition synthesis of large area hetero-doped mono- and few- layer graphene with nitrogen and oxygen species

Hasan, Maria; Meiou, Wang; Yulian, Liu; Ta, Huy Q.; Zhao, Liang; Mendes, Rafael G.; Oswald, S.; Akhter, Zareen; Malik, Z.; Ahmad, Nasir M.; Liu, Zhongfan; Rümmeli, Mark H.

doi:10.1088/2053-1591/ab069a

Cited by 8 publications

(14 citation statements)

References 54 publications

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“…As result, substrate of copper can be used constantly. Arrays of single-crystal graphene islands over 10 mm in size were achieved [203,204]. Graphene wet-transferred room temperature Raman spectra on three separate substrates (Cu, SiO 2 / Si) shows the basic Raman modes of graphene at about 1580 cm −1 due to the inner vibration of C-C bond.…”

Section: Discussionmentioning

confidence: 99%

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

Hussain

Ihrar

et al. 2020

SN Appl. Sci.

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Two-dimensional (2D) graphene and its outstanding properties such as, enormous conductivities, mechanical strength, optical and electrical properties brought it one of the most studied materials for the production of energy using renewable resources. The composites of graphene with the same morphological materials such as layered transition metal oxides will be the most aspiring combination to boost their conducting, optoelectronic and mechanical properties. Furthermore, the transition metal chalcogenides materials attracted significant attention due to their atomically thin layers and enormous optical, conducting and electrical properties. The layered materials offer mostly atomically thin 2D plane to the charge carrier with superior conducting properties. The thickness at atomic level, band gap, spin orbit coupling electronic and optoelectronics properties of transition metal dichalcogenides makes them one of the promising entities in energy harvesting technologies. The review suggests some strategies to improve the transition metals-composites stability conducting properties to be tailored in various applications.

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Section: Discussionmentioning

confidence: 99%

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

Hussain

Ihrar

et al. 2020

SN Appl. Sci.

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“…[38] A blueshift and/or relative reduction in intensity of the 2D peak with respect to pristine graphene can be attributed to the doping and an enhanced number of layers, respectively. [12,46,77] In contrast, transmission electron microscopy (TEM) can precisely identify the number of graphene layers by counting the folds at the graphene edge in micrographs (Figure 2b), which is also backed by fast Fourier transform of the micrograph. [33,83] High-resolution TEM (HRTEM) can assess the material quality and crystalline hexagonal symmetry with atomic resolution.…”

Section: Analytical Approachesmentioning

confidence: 99%

“…The quality and thickness of graphene also strongly influence its conductivity, which in turn impacts the electrical and catalytic properties. [46,77] The ability to continuous grow graphene with a large area is helpful toward governing its conducting properties. In addition, the as-formed sample often contains a large amount of contamination and impurities from the growth and cleaning.…”

Section: Future Outlook and Perspectivesmentioning

confidence: 99%

Advances and Trends in Chemically Doped Graphene

Ullah

Shi

Zhou

et al. 2020

Adv Materials Inter

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Chemically doped graphene materials are fascinating because these have different desirable attributes with possible synergy. The inert and gapless nature of graphene can be changed by adding a small number of heteroatoms to substitute carbon in the lattice. The doped material may display superior catalytic activities; durable, fast, and selective sensing; improved magnetic moments; photoresponses; and activity in chemical reactions. In the current review, recent advances are covered in chemically doped graphene. First, the different types of heteroatoms, their bonding configurations, and briefly their properties are discussed. This is followed by the description of various synthesis and analytical methods essential for assessing the characteristics of heterographene with specific focus on the selected graphene materials of different dopants (particularly, single dopants, including N, B, S, P, first three halogens, Ge, and Ga, and codopants, such as N/O), and more importantly, up‐to‐date applications enabled by the intentional doping. Finally, outlook and perspectives section review the existing challenges, future opportunities, and possible ways to improve the graphitic materials. The goal is to update and inspire the readers to establish novel doped graphene with valuable properties and for current and futuristic applications.

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“…Recently, multielement doping has drawn substantial attention in attempts to achieve the concomitant coupling of the features of codopants in one material, thus establishing superior pro perties in terms of several attributes as opposed to the advantages offered by the single doping components, such as the ability to undertake catalysis of important reactions. [30,31,33] However, in the case of N and B codoping, they usually incline to integrate together, promoting B-N configurations, which counter the synergistic effect, and thus the graphene behaves similarly to a pristine architecture in the case of such bonding configurations. Other common codoping configurations tend to randomly position the multiple elements in the graphene skeleton.…”

Section: Multielement Dopingmentioning

confidence: 99%

“…[30][31][32][33] In addition, doping also provides graphene with distinctive chemical, structural, electrical, optical, and magnetic characteristics. [31,[33][34][35][36][37][38][39] It has been demonstrated both theoretically and experimentally that doping contributes significantly to the properties of 2D graphene, as can be seen in Figure 2a-g. [29,30,32,[40][41][42][43][44][45][46][47][48][49][50] Doping of 3D graphene is still considered an emerging topic of research and many investigations have been undertaken to utilize the properties of these unusual graphitic derivatives such as their large accessible surface area; high electron mobility due to the interconnected porous architecture; and superior catalytic, chemical, and biocompatible properties generated by doping [31,33,[51][52][53] and, in the process, uncover exceptional synergy between 3D graphene forms and the doped elements. [24,25,27,29,43] The doping of graphene has been summarized by many researchers and discussed from various perspectives.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Doped Porous 3D Graphene Structures by Chemical Vapor Deposition and Its Applications

Ullah

Hasan

et al. 2019

Adv Funct Materials

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Graphene doping principally commenced to compensate for its inert nature and create an appropriate bandgap. Doping of 3D graphene has emerged as a topic of interest because of attempts to combine its large available surface area-arising from its interconnected porous architecture-with superior catalytic, structural, chemical, and biocompatible characteristics that can be induced by doping. In light of the latest developments, this review provides an overview of the scalable chemical vapor deposition (CVD)-based growth of doped 3D graphene materials as well as their applications in various contexts, such as in devices used for energy generation and gas storage and biosensors. In particular, single-and multielement doping of 3D graphene by various dopants (such as nitrogen (N), boron (B), sulfur (S) and phosphorous (P)), the doping configurations of the resultant materials, an overview of recent developments in the field of CVD, and the influence of various parameters of CVD on graphene doping and 3D morphologies are focused in this paper. Finally, this report concludes the discussion by mentioning the existing challenges and future opportunities of these developing graphitic materials, intending to inspire the unveiling of more exciting functionalized 3D graphene morphologies and their potential properties, which can hopefully realize many possible applications.

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Low pressure chemical vapor deposition synthesis of large area hetero-doped mono- and few- layer graphene with nitrogen and oxygen species

Cited by 8 publications

References 54 publications

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

Advances and Trends in Chemically Doped Graphene

Synthesis of Doped Porous 3D Graphene Structures by Chemical Vapor Deposition and Its Applications

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