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Preparation method of carbon nano-tube supported palladium nano-composite material

A composite material, carbon nanotube technology, applied in the fields of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve problems such as troublesome, cumbersome and lengthy experimental procedures, and achieve mild reaction conditions, simple reaction process operations, and easy-to-obtain raw materials. Effect

Inactive Publication Date: 2010-11-10
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods successfully load Pd nanoparticles on the surface of CNTs, they are either limited by harsh reaction conditions or equipment, or troubled by tedious and lengthy experimental procedures (J.Phys.Chem.C, 2008, 112: 8172-8176)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 0.021g of palladium acetate and 0.17g of dodecyl sulfide, and dissolve them in 50mL of absolute ethanol. The above solution was heated and stirred at 60° C. for 1 h to obtain a black ethanol solution of Pd nanoparticles. The prepared Pd nanoparticle ethanol solution was added to a toluene solution (50mL) containing 1.1mL benzyl mercaptan, and after stirring for 0.5h, a large amount of distilled water was added to the system, and the solution was layered, and the upper layer contained Pd nanoparticles. Toluene phase, the lower layer is a mixed phase of water and ethanol. The lower aqueous phase was removed, and the upper organic phase was washed three times with distilled water to obtain a toluene solution containing Pd nanoparticles.

[0019] Weigh 0.1g of CNTs, disperse it in 50mL of toluene solution, and process it ultrasonically for 4h to obtain a suspension of CNTs in toluene. The toluene solution of the above Pd nanoparticles was added to the CNTs toluene s...

Embodiment 2-4

[0021] According to the method and step of embodiment 1, but the quality of changing lauryl sulfide is respectively:

[0022] (2) 0.068g (3) 0.34g (4) 0.68g

Embodiment 5-8

[0024] According to the method and step of embodiment 1, the amount of changing benzyl mercaptan is respectively:

[0025] (5) 0.55ml (6) 0.22ml (7) 0.11ml (8) 0.055ml

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Abstract

The invention discloses a method for preparing a carbon nano-tube supported palladium nano-composite material by utilizing phase transfer and self-assembly technology. The method of the invention comprises the following steps: dissolving dodecyl sulfide and palladium acetate in absolute ethyl alcohol, and heating and stirring to obtain a Pd nano-particle ethanol solution; adding the prepared Pd nano-particle ethanol solution into an organic solvent containing benzyl mercaptan, extracting the ethanol through distilled water, and transferring Pd nano-particles into the organic solvent through phase transfer; and adding the organic solvent containing the Pd nano-particles into CNTs in the corresponding suspension of the organic solvent, and carrying out conventional treatment to obtain a Pd / CNTs nano-composite material. The analysis result shows that the Pd nano-particles of the material synthesized by the method are uniformly distributed on the surfaces of the CNTs.

Description

technical field [0001] The invention relates to a method for preparing carbon nanotube-loaded palladium nanocomposite material by using phase transfer and self-assembly technology. Background technique [0002] As an emerging class of materials, carbon nanotube-based (CNTs) composites have aroused great research interest due to their unique physical and chemical properties. CNTs composites decorated with Pd nanoparticles (abbreviated as Pd / CNTs) are expected to have potential applications in the fields of nanoelectronic devices, gas sensing, fuel cells and heterogeneous catalysis. At present, the preparation methods of Pd / CNTs nanocomposites include: supercritical CO 2 Fluid technology, microemulsion, electrochemical deposition and self-reduction of surfactants, etc. Although these methods successfully load Pd nanoparticles on the surface of CNTs, they are either limited by harsh reaction conditions or equipment, or troubled by tedious and lengthy experimental procedures (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82B3/00
Inventor 王晓来陈龙邹国军
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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