Carbon nanowall growth on carbon paper by hot filament chemical vapour deposition and its microstructure

Lisi, N.; Giorgi, R.; Re, M.; Dikonimos, Theodoros; Giorgi, L.; Salernitano, E.; Gagliardi, Serena; Tatti, Francesco

doi:10.1016/j.carbon.2011.01.056

Cited by 34 publications

(14 citation statements)

References 26 publications

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“…PEM fuel cells have been widely recognized as the most promising candidates for future power generating devices in the automotive, distributed power generation and portable electronic applications. Waje, et al demonstrated the preparation of Pt nanoparticles 2-2.5 nm in size on organically functionalized CNTs grown on CFP [60]. Very recently Lisi, et al demonstrated the growth of GNWs on CFP by hot-filament CVD and investigated the microstructure of the GNWs both at the tip and at the fiber-nanowall base interface [61].…”

Section: Fabrication Of Graphene Nanowalls On Carbon Fiber Paper For mentioning

confidence: 99%

Graphene Nanowalls

Hiramatsu¹,

Kondo²,

Hori³

2013

New Progress on Graphene Research

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Section: Fabrication Of Graphene Nanowalls On Carbon Fiber Paper For mentioning

confidence: 99%

Graphene Nanowalls

Hiramatsu¹,

Kondo²,

Hori³

2013

New Progress on Graphene Research

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“…Such carbon species, known as CNWs, have been previously reported to grow on thin films substrates by the CVD methods. 1,[3][4][5][6] Fig. 2(e) shows that CNWs were uniformly grown on the surface of the carbonized PAN fibers simultaneously during the MPECVD carbonization process.…”

Section: Resultsmentioning

confidence: 93%

“…3 Furthermore, the fabrication of CNWs on two-dimensional substrates without using catalysts by chemical vapor deposition (CVD) was also reported by many other authors. [4][5][6] Shang et al synthesized uniform carbon flakes with a thickness of less than 20 nm on Si substrates at the substrate temperature of 400-700 C by hot-filament chemical vapor deposition (HFCVD) using the mixture of C 2 H 2 and H 2 . 4 Wang et al produced freestanding carbon nanosheets (CNS) on substrates, such as Si, W, Mo, Zr, Ti, Hf, Nb, Ta, Cr, 304 stainless steel, SiO 2 , and Al 2 O 3 without catalysts or special substrate treatment by using radio-frequency plasma enhanced chemical vapor deposition (RF-PECVD).…”

Section: Introductionmentioning

confidence: 99%

“…5 Lisi et al deposited CNWs on carbon paper at growth temperature of 700 C in CH 4 /He system using HFCVD. 6 To the best of our knowledge, most of the work reported so far is limited to two-dimensional substrates and the use of a catalyst is essential in the case of the CVD process. In this paper, we report the growth of CNWs on the carbonized polyacrylonitrile (PAN) fibers without any catalysts during the MPECVD process for the first time.…”

Section: Introductionmentioning

confidence: 99%

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Carbon nanowalls grown by microwave plasma enhanced chemical vapor deposition during the carbonization of polyacrylonitrile fibers

Shi

Zhou

et al. 2013

Journal of Applied Physics

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We used microwave plasma enhanced chemical vapor deposition (MPECVD) to carbonize an electrospun polyacrylonitrile (PAN) precursor to form carbon fibers. Scanning electron microscopy, Raman spectroscopy, and Fourier transform infrared spectroscopy were used to characterize the fibers at different evolution stages. It was found that MPECVD-carbonized PAN fibers do not exhibit any significant change in the fiber diameter, whilst conventionally carbonized PAN fibers show a 33% reduction in the fiber diameter. An additional coating of carbon nanowalls (CNWs) was formed on the surface of the carbonized PAN fibers during the MPECVD process without the assistance of any metallic catalysts. The result presented here may have a potential to develop a novel, economical, and straightforward approach towards the mass production of carbon fibrous materials containing CNWs. V

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“…The hot filament CVD (HFCVD) is an economical technique for the synthesis of CNTs and other carbon nanostructures such as carbon nanoflakes [39] and carbon nanowalls [40]. In HFCVD, a relatively inexpensive substrate can be used to produce CNT.…”

Section: Carbon Nanotubesmentioning

confidence: 99%

Carbon nanotubes part I: preparation of a novel and versatile drug-delivery vehicle

Karimi

Solati

Amiri

et al. 2015

Expert Opinion on Drug Delivery

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Introduction It is 23 years since carbon allotrope known as carbon nanotubes (CNT) was discovered by Iijima, who described them as “rolled graphite sheets inserted into each other”. Since then, CNTs have been studied in nanoelectronic devices. However, CNTs also possess the versatility to act as drug- and gene-delivery vehicles. Areas covered This review covers the synthesis, purification and functionalization of CNTs. Arc discharge, laser ablation and chemical vapor deposition are the principle synthesis methods. Non-covalent functionalization relies on attachment of biomolecules by coating the CNT with surfactants, synthetic polymers and biopolymers. Covalent functionalization often involves the initial introduction of carboxylic acids or amine groups, diazonium addition, 1,3-dipolar cycloaddition or reductive alkylation. The aim is to produce functional groups to attach the active cargo. Expert opinion In this review, the feasibility of CNT being used as a drug-delivery vehicle is explored. The molecular composition of CNT is extremely hydrophobic and highly aggregation-prone. Therefore, most of the efforts towards drug delivery has centered on chemical functionalization, which is usually divided in two categories; non-covalent and covalent. The biomedical applications of CNT are growing apace, and new drug-delivery technologies play a major role in these efforts.

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Carbon nanowall growth on carbon paper by hot filament chemical vapour deposition and its microstructure

Cited by 34 publications

References 26 publications

Graphene Nanowalls

Graphene Nanowalls

Carbon nanowalls grown by microwave plasma enhanced chemical vapor deposition during the carbonization of polyacrylonitrile fibers

Carbon nanotubes part I: preparation of a novel and versatile drug-delivery vehicle

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