CNTs@SiO2@Ni/Al-LDH shell structure three-dimensional nanometer material and preparation method thereof

A three-dimensional nanotechnology, core-shell structure technology, applied in nanotechnology, nanotechnology, nanotechnology and other directions for materials and surface science, can solve problems such as poor electrical conductivity, poor electrochemical performance, and easy agglomeration of hydrotalcite nanosheets , to achieve the effect of avoiding stacking, enhancing activity, and good mechanical stability

Active Publication Date: 2015-08-19
英能基(成都)科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of hydrotalcite nanosheets, such as easy agglomeration, poor electrical conductivity, and poor electrochemical performance, how to combine carbon materials with good electrical conductivity such as carbon nanotubes with nickel-aluminum hydrotalcite, and design a novel, Stable 3D nanostructured materials for enhanced material performance

Method used

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  • CNTs@SiO2@Ni/Al-LDH shell structure three-dimensional nanometer material and preparation method thereof
  • CNTs@SiO2@Ni/Al-LDH shell structure three-dimensional nanometer material and preparation method thereof
  • CNTs@SiO2@Ni/Al-LDH shell structure three-dimensional nanometer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Carbon nanotube silica nickel aluminum hydrotalcite (CNTsSiO 2 Preparation of three-dimensional nanostructured materials with Ni / Al-LDH) core-shell structure.

[0033]1) Take 0.01g of carbon nanotubes and 0.01g of CTAB in a container, then add 0.01L of ethanol and 0.01L of deionized water to the above container, and perform ultrasonic treatment on the above mixed solution to obtain carbon nanotube solution A;

[0034] 2) Add 0.1ml NaOH and 0.1ml tetraethyl orthosilicate (TEOS) to solution A, stir evenly, centrifuge, wash the product with ethanol and dry it, and finally obtain clean powder B.

[0035] 3) Disperse 0.1g aluminum isopropoxide in 0.1L deionized water, stir evenly at 30°C, add HNO dropwise to the upper system solution 3 Adjust the pH value of the solution to 8, continue stirring evenly, then cool the solution system to room temperature, and obtain the AlOOH sol after the water evaporates. Grind the dried AlOOH, add 0.01L of deionized water, stir evenly and ...

Embodiment 2

[0040] 1) Take 0.01 g of carbon nanotubes and 0.6 g of CTAB in a container, then add 0.1 L of ethanol and 0.1 L of deionized water to the above container, and perform ultrasonic treatment on the above mixed solution to obtain carbon nanotube solution A;

[0041] 2) Add 0.2ml NaOH and 0.2ml tetraethyl orthosilicate (TEOS) to solution A, stir evenly, centrifuge, wash the product with ethanol and dry it, and finally obtain clean powder B.

[0042] 3) Disperse 0.2g aluminum isopropoxide in 0.2L deionized water, after stirring evenly, add HNO dropwise to the upper system solution 3 Adjust the pH value of the solution to 7, continue stirring evenly, then cool the solution system to room temperature, and obtain the AlOOH sol after the water evaporates. Grind the dried AlOOH, add 0.1L of deionized water, stir evenly and reflux for 5 hours to obtain solution C.

[0043] 4) Take 50ml of solution C and 0.02g of powder B, stir evenly, centrifuge or filter the product, wash with alcohol, ...

Embodiment 3

[0047] 1) Take 0.03 g of carbon nanotubes and 2 g of CTAB in a container, then add 0.2 L of ethanol and 0.2 L of deionized water to the container, and perform ultrasonic treatment on the above mixed solution for 6 hours to obtain a carbon nanotube solution A;

[0048] 2) Add 5ml NaOH and 5ml tetraethyl orthosilicate (TEOS) into solution A, stir evenly, centrifuge, wash the product with ethanol and dry it, and finally obtain clean powder B.

[0049] 3) Disperse 2g aluminum isopropoxide in 0.5L deionized water, stir evenly, add HNO dropwise to the upper system solution 3 Adjust the pH value of the solution to 6, continue stirring evenly, then cool the solution system to room temperature, and obtain the AlOOH sol after the water evaporates. Grind the dried AlOOH, add 0.5L of deionized water, stir evenly and reflux for 7 hours to obtain solution C.

[0050] 4) Take 100ml of solution C and 30g of powder B, stir for 1-48 hours, centrifuge or filter the product, wash with alcohol, a...

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Abstract

The present invention discloses a CNTs@SiO2@Ni/Al-LDH shell structure three-dimensional nanometer material preparation, which comprises: (1) dispersing carbon nano-tubes in a solution by using hexadecyl trimethyl ammonium bromide (CTAB); (2) coating a SiO2 shell layer on the surface of the uniformly-dispersed carbon nano-tubes to form a CNTs@SiO2 core-shell structure; (3) preparing a AlOOH sol precursor; (4) coating the AlOOH sol precursor on the surface of the CNTs@SiO2 core-shell structure to form a CNTs@SiO2@AlOOH core-shell structure; and (5) preparing a CNTs@SiO2@Ni/Al-LDH core-shell structure through an in-situ growth method. The material and the method of the present invention are mainly used in the fields of super-capacitors, catalysts, sensors and the like.

Description

technical field [0001] The invention belongs to the field of nanostructure materials, in particular to a CNTsSiO 2 Preparation method of three-dimensional nanomaterial with Ni / Al-LDH core-shell structure. Background technique [0002] Hydrotalcite-like compounds are a class of multifunctional materials, also known as layered composite metal hydroxides, including hydrotalcite (HT for short) and hydrotalcite-like compounds (HTLCs for short). Its typical molecular formula is [M 2+ 1–x m 3+ x (OH) 2 ] x+ [A n– x / n mH 2 O] x– . M in it 2+ , M 3+ represent divalent and trivalent metal cations, respectively, M 2+ It can be divalent ions of metal elements such as manganese, zinc, cobalt, nickel, iron, calcium, copper, magnesium; M 3+ Represents trivalent metal cations, which can be trivalent ions of metal elements such as aluminum, iron, chromium, gallium, nickel, manganese, and cobalt; A n– It is an exchangeable guest anion between layers, such as carbonate ion, sul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04C01B33/12C01B31/02B82Y30/00B82Y40/00
Inventor 陈泽祥王艳李海张继君
Owner 英能基(成都)科技有限公司
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