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A magnetic core/shell structured ti 3 c 2 Alkene/ni powder and preparation method thereof

A technology of shell structure and powder, applied in metal processing equipment, liquid chemical plating, transportation and packaging, etc., to achieve the effect of easy collection and cleaning, large specific surface area and easy control

Active Publication Date: 2020-11-17
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no relevant patents and literature reports on this kind of core / shell structure MXene / Ni powder at home and abroad.

Method used

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  • A magnetic core/shell structured ti <sub>3</sub> c <sub>2</sub> Alkene/ni powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0029] 1. Reagent ingredients:

[0030] Activation solution: 1g / L PbCl 2 , 50g / L SnCl 2 , 5g / L NaCl, 30mL / L HCl (6M) were added into water to make a colloidal palladium solution.

[0031] Degumming solution: 5% HCl solution.

[0032]Electroless plating solution: 10g / L nickel sulfate hexahydrate, 10g / L disodium edetate, 10g / L disodium citrate, 10mg / L thiourea, adjust the pH of the plating solution to 9-10 with NaOH solution.

[0033] Reducing agent: 100ml / L 80% hydrazine hydrate.

[0034] 2. Electroless plating:

[0035] (1) Put Ti 3 C 2 Put the powder into the colloidal palladium solution, continue magnetic stirring at 60°C for 30min, and then centrifuge to separate the activated Ti 3 C 2 For the powder, use the prepared dilute HCl solution to degumming for 1min. For Ti after degelling 3 C 2 The powder was centrifugally cleaned until the pH value was about 7, and then the powder was dried in a vacuum drying oven at 60°C for 24 hours to obtain Ti 3 C 2 Activated po...

Embodiment approach 2

[0041] 1. Reagent ingredients:

[0042] Activation solution: 1g / L PbCl 2 , 100g / L SnCl 2 , 10g / L NaCl, 50mL / L HCl (6M) were added into water to make colloidal palladium solution.

[0043] Degumming solution: 8% HCl solution.

[0044] Electroless plating solution: 20g / L nickel sulfate hexahydrate, 15g / L disodium edetate, 15g / L disodium citrate, 20mg / L thiourea, adjust the pH of the plating solution to 10-11 with NaOH solution.

[0045] Reducing agent: 150ml / L 80% hydrazine hydrate.

[0046] 2. Electroless plating:

[0047] (1) Put Ti 3 C 2 Put the powder into the colloidal palladium solution, continue magnetic stirring at 60°C for 90min, and then centrifuge to separate the activated Ti 3 C 2 For the powder, use the prepared dilute HCl solution to degumming for 2 minutes. For Ti after degelling 3 C 2 The powder was centrifugally cleaned until the pH value was about 7, and then the powder was dried in a vacuum drying oven at 60°C for 24 hours to obtain Ti 3 C 2 Activ...

Embodiment approach 3

[0053] 1. Reagent ingredients:

[0054] Activation solution: 2g / L PbCl 2 , 150g / L SnCl 2 , 20g / L NaCl, 100mL / L HCl (6M) were added into water to make colloidal palladium solution.

[0055] Degumming solution: 10% HCl solution.

[0056] Electroless plating solution: 20g / L nickel sulfate hexahydrate, 10g / L disodium edetate, 10g / L disodium citrate, 10mg / L thiourea, adjust the pH of the plating solution to 10-11 with NaOH solution.

[0057] Reducing agent: 200ml / L 80% hydrazine hydrate.

[0058] 2. Electroless plating:

[0059] (1) Put Ti 3 C 2 Put the powder into the colloidal palladium solution, continue magnetic stirring at 60°C for 60min, and then centrifuge to separate the activated Ti 3 C 2 For the powder, use the prepared dilute HCl solution to degumming for 5 minutes. For Ti after degelling 3 C 2 The powder was centrifugally cleaned until the pH value was about 7, and then the powder was dried in a vacuum drying oven at 60°C for 24 hours to obtain Ti 3 C 2 Act...

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Abstract

The invention discloses a Ti with magnetic core / shell structure 3 C 2 Alkene / Ni powder and preparation method thereof, utilizing electroless plating technology, with Ti 3 C 2 Alkene is the carrier and its surface is coated with a shell film composed of nickel particles. The preparation method mainly includes Ti 3 C 2 Two steps of powder pretreatment and electroless nickel plating. The pretreatment part adopts the one-step method of activation and sensitization. For the electroless nickel plating part, the plating solution is mainly composed of nickel sulfate hexahydrate, disodium edetate, sodium citrate, and thiourea, the reducing agent is hydrazine hydrate, the reaction temperature is 45-95°C, and the pH is controlled at 9-13 . This process enables rapid access to Ti with a core / shell structure 3 C 2 ene / Ni powder, simple process, low cost, high-quality nickel coating and Ti 3 C 2 The carrier has a tight binding force. No pre-treatment such as roughening of the substrate is required, and the thickness and particle size of the shell can be adjusted. Therefore, core / shell nanocomposites with tunable structures and properties can be prepared. This kind of core / shell powder has great research value in medicine, catalysis, optics and electromagnetism.

Description

technical field [0001] The invention belongs to the field of preparation of nanocomposite materials, in particular to a Ti with magnetic core / shell structure 3 C 2 / Ni powder and its preparation method. Background technique [0002] The core / shell structure is a composite structure composed of a central particle and a shell. It not only has the excellent properties of the core and the shell, but also its structure and composition can be designed and adjusted on the nanometer scale, so it has unique optical and electrical properties. , magnetic, catalytic, chemical or biological functional properties, so the core-shell structure composite powder has become a research hotspot. [0003] MXene, a new type of "graphene-like" two-dimensional nanomaterial, is a selectively etched ternary layered carbide and nitride MAX ceramic (general formula M n+1 AX n , abbreviated as MAX, M is a transition metal element, A is the third and fourth main group elements, X is C or N, n=1,2,3) o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/34C23C18/18B22F1/02
CPCC23C18/1879C23C18/34B22F1/17
Inventor 李世波胡树郡周洋李翠伟黄振莺翟洪祥
Owner BEIJING JIAOTONG UNIV
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