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Growth of carbon-based nanostructures using active growth materials comprising alkali metals and/or alkaline earth metals

A technology of nanostructures and alkaline earth metals, applied in nanostructure manufacturing, carbon nanotubes, nanocarbons, etc.

Inactive Publication Date: 2018-11-23
MASSACHUSETTS INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many commonly used materials have one or more disadvantages associated with them

Method used

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  • Growth of carbon-based nanostructures using active growth materials comprising alkali metals and/or alkaline earth metals
  • Growth of carbon-based nanostructures using active growth materials comprising alkali metals and/or alkaline earth metals
  • Growth of carbon-based nanostructures using active growth materials comprising alkali metals and/or alkaline earth metals

Examples

Experimental program
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Embodiment 1

[0228]In this example, desized carbon fibers were prepared for carbon-based nanostructure growth. The desized Tohotenax HTA40 fibers were washed once with water and then dried (20 minutes under vacuum at 50 mbar and 120° C.). Figure 4 is an SEM image of as-is desized Tohotenax HTA40 fibers.

Embodiment 3

[0233] In this example, the growth of carbon nanotubes from sodium hydroxide (NaOH) active growth material supported by desized CF was demonstrated. Desized CF was prepared as in Example 1. A 0.18M solution of NaOH (SigmaAldrich reagent grade) was prepared in deionized water and added to the Petri dish. The desized CF was immersed in a 0.18 M NaOH solution for 5 min, then removed and allowed to dry at ambient temperature for 3 h.

[0234] The growth process was carried out as in Comparative Example 2. Sodium hydroxide was in solid salt form on the CF samples just before the growth process started. Figure 6A with 6B is a SEM image showing carbon nanotube growth at the end of the growth process. Figure 6C is a TEM image of carbon nanotubes produced during the growth process. Carbon nanotube growth was also observed at 400°C and 390°C.

Embodiment 4

[0236] This example shows the growth of carbon nanotubes from NaOH active growth material supported by sized CF. The Hexcel AS4 sized CF was washed and dried as in Example 1. A 0.18M solution of NaOH (SigmaAldrich reagent grade) was prepared in deionized water and added to the Petri dish. The sized CFs were immersed in 0.18 M NaOH solution for 5 min, then removed and allowed to dry at ambient temperature for 3 h.

[0237] The growth process was carried out as in Comparative Example 2. Sodium hydroxide was in solid salt form on the CF samples just before the growth process started. Figure 7 is a SEM image showing carbon nanotubes produced during the growth process. Carbon nanotube growth was also observed at 400 °C.

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Abstract

The instant disclosure is related to the growth of carbon-based nanostructures and associated systems and products. Certain embodiments are related to carbon-based nanostructure growth using active growth materials comprising alkali metals and / or alkaline earth metals. In some embodiments, the growth of carbon-based nanostructures is performed at relatively low temperatures.

Description

[0001] Cross References to Related Applications [0002] U.S. Provisional Application No. 62 / 315,508, filed March 30, 2016, entitled "Growth of Carbon-Based Nanostructures Using Active Growth Materials Comprising AlkaliMetals and / or Alkaline Earth Metals," pursuant to 35 U.S.C. §119(e) priority number, which is hereby incorporated by reference in its entirety for all purposes. technical field [0003] The growth of carbon-based nanostructures and related systems and products are generally described. Background technique [0004] The production of carbon-based nanostructures could potentially serve as an important tool for the production of a wide range of emerging applications, including electronic devices and structural materials. Recent research has focused on the production of eg carbon nanotubes (CNTs) by chemical vapor deposition (CVD) and other techniques. When designing a process for producing carbon nanostructures, it is important to select the appropriate material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15C01B32/154C01B32/158C01B32/16B82B3/00
CPCC01B32/15C01B32/16C01B32/154D01F9/127C01B32/162C01B32/18C01B32/159C01B32/184C01P2004/03
Inventor 布赖恩·L·沃德尔理查德·李埃丽卡·弗赖勒·安图尼斯安德鲁·H·廖塔
Owner MASSACHUSETTS INST OF TECH