Effects of H2O Addition on One-Step Liquid-Phase Synthesis of Highly Aligned Carbon Nanotubes

Shunsuke Yamashita; Tomoka Kikitsu; Yoshihiro Yamaguchi; Kiyofumi Yamagiwa; Jun Kuwano

doi:10.4028/www.scientific.net/KEM.445.201

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Synthesis and Characterization of Low-Dimensional Structure Photocatalyst BaGeGa₆O₁₂
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Composite Electromagnetic Wave Absorber Made of Both Sendust and Aluminum Particles Dispersed in Polystyrene Resin
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Effects of H₂O Addition on One-Step Liquid-Phase Synthesis of Highly Aligned Carbon Nanotubes
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Relationship between Aluminum and Lithium and Annealing for Reducing Lithium Contamination in Aluminum-Implanted Zinc Oxide
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Effect of Substrate on Growth Mechanism of Flower Structured InN Fabricated by APHCVD
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Characteristics of Hot Spot Oxygen Sensor Using GdBa₂Cu₃O_7-δ Ceramic Rod with Gd₂BaCuO₅ Core
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Low Temperature Synthesis Method of La₂O₂S₂ and Evaluation of the Photocatalytic Activity
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 445Effects of H2O Addition on One-Step Liquid-Phase...

Effects of H₂O Addition on One-Step Liquid-Phase Synthesis of Highly Aligned Carbon Nanotubes

Abstract:

Highly aligned carbon nanotube arrays (HACNTAs) were synthesized on a stainless steel substrate from a methanol solution of Co(Ⅲ) acetylacetonate by the one-step liquid-phase synthesis, and effects of H2O addition on the HACNTA growth were examined. The growth rate was considerably accelerated, and the lifetime of the catalysts was prolonged by addition of a small amount of H2O. HACNTAs with over 400 m thickness were formed on the side surfaces of the substrate by resistance-heating for one hour. This suggests that the added H2O removes deposited amorphous carbons from the catalyst surfaces and consequently accelerates the growth rate.