Wall-number selective growth of vertically aligned carbon nanotubes from FePt catalysts: a comparative study with Fe catalysts

Li, Shisheng; Hou, Peng‐Xiang; Liu, Chang; Gao, Libo; Liu, Bilu; Zhang, Lili; Song, Mei; Cheng, Hui‐Ming

doi:10.1039/c2jm32270f

Cited by 9 publications

(8 citation statements)

References 47 publications

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“…To make CNT forests competitive in each application space, targeted growth must advance to hone application-specific properties. Researchers have sought to focus control on one or a few critical characteristics including intrinsic CNT forest properties like crystallinity/defect density, , wall number, − diameter (and polydispersity), − alignment, and areal density. , Importantly, there are inherent trade-offs between these characteristics, which limit the extent of independent control and thus should be considered in the application design . Other growth challenges that remain critical bottlenecks to applications are achieving ultralong CNT forests (>mm scale), large-area forests (>wafer scale), and growth on conductive or flexible substrates, − all of which remain nontrivial.…”

Section: Recent Advances In Swcnt Growthmentioning

confidence: 99%

Carbon Nanotubes and Related Nanomaterials: Critical Advances and Challenges for Synthesis toward Mainstream Commercial Applications

et al. 2018

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Advances in the synthesis and scalable manufacturing of single-walled carbon nanotubes (SWCNTs) remain critical to realizing many important commercial applications. Here we review recent breakthroughs in the synthesis of SWCNTs and highlight key ongoing research areas and challenges. A few key applications that capitalize on the properties of SWCNTs are also reviewed with respect to the recent synthesis breakthroughs and ways in which synthesis science can enable advances in these applications. While the primary focus of this review is on the science framework of SWCNT growth, we draw connections to mechanisms underlying the synthesis of other 1D and 2D materials such as boron nitride nanotubes and graphene.

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Section: Recent Advances In Swcnt Growthmentioning

confidence: 99%

Carbon Nanotubes and Related Nanomaterials: Critical Advances and Challenges for Synthesis toward Mainstream Commercial Applications

et al. 2018

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“…Li et al achieved controlled diameter distribution, wall number and thermal stability of VACNTs grown on a FePt catalyst compared to VACNTs grown from an Fe catalyst. 31 Aside from diameter control, quality enhancement is another critical issue for CNTs for a wide range of applications. 32 Apart from the mobility of the carbon source increasing with temperature, the CNT growth rate is also proportional to the reaction temperature owing to the high face-centered cubic phase of Fe (g Fe ).…”

Section: Introductionmentioning

confidence: 99%

Structure-controlled growth of vertically-aligned carbon nanotube forests using iron–nickel bimetallic catalysts

et al. 2021

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“…Among various magnetic nanomaterials, chemically ordered L 1 0 -FePt has attracted much attention because of its very high magnetocrystalline anisotropy constant ( K u ) (7 × 10 7 ergs/cc), which allows very low critical superparamagnetic size (~ 3–4 nm), high Curie temperature, good chemical stability, and biological compatibility [ 1 , 2 , 3 ]. These properties promote the important potential applications of L 1 0 -FePt in the high-density magnetic recording medium [ 4 , 5 ], high performance permanent magnetic materials [ 6 , 7 ], catalysts [ 8 , 9 ], and biological applications [ 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Cu on the Improvement of Magnetic Properties and Structure of L10 FePt Nanoparticles

Zhang

et al. 2021

Nanomaterials

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L10 ordered FePt and FePtCu nanoparticles (NPs) with a good dispersion were successfully fabricated by a simple, green, one-step solid-phase reduction method. Fe (acac)3, Pt (acac)2, and CuO as the precursors were dispersed in NaCl and annealed at different temperatures with an H2-containing atmosphere. As the annealing temperature increased, the chemical order parameter (S), average particle size (D), coercivity (Hc), and saturation magnetization (Ms) of FePt and FePtCu NPs increased and the size distribution range of the particles became wider. The ordered degree, D, Hc, and Ms of FePt NPs were greatly improved by adding 5% Cu. The highest S, D, Hc, and Ms were obtained when FePtCu NPs annealed at 750 °C, which were 0.91, 4.87 nm, 12,200 Oe, and 23.38 emu/g, respectively. The structure and magnetic properties of FePt and FePtCu NPs at different annealing temperatures were investigated and the formation mechanism of FePt and FePtCu NPs were discussed in detail.

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Wall-number selective growth of vertically aligned carbon nanotubes from FePt catalysts: a comparative study with Fe catalysts

Cited by 9 publications

References 47 publications

Carbon Nanotubes and Related Nanomaterials: Critical Advances and Challenges for Synthesis toward Mainstream Commercial Applications

Carbon Nanotubes and Related Nanomaterials: Critical Advances and Challenges for Synthesis toward Mainstream Commercial Applications

Structure-controlled growth of vertically-aligned carbon nanotube forests using iron–nickel bimetallic catalysts

Influence of Cu on the Improvement of Magnetic Properties and Structure of L10 FePt Nanoparticles

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