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Method of functionalizing surfaces of carbon nanomaterials

A technology of carbon nanomaterials and surface functionalization, applied in the direction of multi-walled carbon nanotubes, chemical instruments and methods, nanotechnology, etc., can solve problems such as consumption, difficulty in implementation, and large solvents

Inactive Publication Date: 2017-05-10
NANYANG TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This process also consumes a lot of solvent, making it difficult to implement

Method used

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  • Method of functionalizing surfaces of carbon nanomaterials
  • Method of functionalizing surfaces of carbon nanomaterials
  • Method of functionalizing surfaces of carbon nanomaterials

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Experimental program
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Effect test

Embodiment

[0055] experiment

[0056] Material

[0057] Multi-walled carbon nanotubes with an average diameter of 10 nm and an average length of 1.5 μm were purchased from Nanocyl, Belgium. The surface area is 250-300m 2 / g. Poly(vinylidene fluoride) (PVDF) powder was purchased from Alfa Aesar. Solvents used, including analytical grade ethanol, acetone, chloroform and N,N-dimethylformamide (DMF) were purchased from Sigma Aldrich.

[0058] Air annealing

[0059] The annealing process was carried out in a thermogravimetric analyzer (Q 500, TA Instruments). Pristine CNTs without any pretreatment were placed in a platinum boat and heated to a preset temperature between 450 °C and 550 °C at a rate of 5 °C / min under an air flow rate of 5 ml / min. Use N with an instantaneous flow rate of 50ml / min 2 , as preliminary experiments indicated that dilution is required to achieve a controlled surface oxidation reaction of CNTs. A schematic diagram of the process is in figure 1 shown in . For ...

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Abstract

The invention relates to a method of functionalizing surfaces of carbon nanomaterials using oxygen in the air. The method is clean and eco-friendly with virtually zero chemical usage and zero waste generation. The dispersion of the surface-functionalized carbon nanomaterials is excellent in organic solvents.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Singapore Patent Application No. 10201405784X filed 16 September 2014, the entire contents of which are hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to a method for functionalizing the surface of carbon nanomaterials with oxygen in the air. Background technique [0004] Carbon nanotubes (CNTs) are quasi-one-dimensional materials. In the past two decades, carbon nanotubes have been extensively studied due to their outstanding mechanical, chemical, electrical, electronic, and thermal properties. Their applications include composites, sensors, photovoltaics, actuators, transistors and energy storage and conversion devices. Due to their high aspect ratio (micron-scale in length and less than 100 nm in diameter) and strong intermolecular van der Waals forces, CNTs usually form highly entangled bundles and networks, making th...

Claims

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Application Information

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IPC IPC(8): B82B3/00B82Y40/00C01B32/174
CPCB82Y40/00B82B3/008C01B32/174C01B32/168Y10S977/748Y10S977/752Y10S977/753Y10S977/847C08K3/041B82Y30/00C01B2202/06
Inventor 胡晓陈学龙
Owner NANYANG TECH UNIV
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