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Method for preparing two-dimensional self-supporting ultrathin transition metal sheets

A transition metal, self-supporting technology, applied in metal material coating process, liquid chemical plating, coating and other directions, can solve the problems of cumbersome process and achieve the effect of simple process, low cost and novel synthesis method

Inactive Publication Date: 2012-11-28
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of cumbersome processes in the existing two-dimensional self-supporting transition metal ultra-thin sheet preparation method, thereby providing a preparation method for two-dimensional self-supporting transition metal ultra-thin sheet

Method used

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  • Method for preparing two-dimensional self-supporting ultrathin transition metal sheets
  • Method for preparing two-dimensional self-supporting ultrathin transition metal sheets
  • Method for preparing two-dimensional self-supporting ultrathin transition metal sheets

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specific Embodiment approach 1

[0028] Specific embodiment one: the preparation method of a kind of two-dimensional self-supporting transition metal ultrathin sheet among the present invention is realized by following steps:

[0029] 1. Mix the transition metal inorganic salt with water to prepare an inorganic salt solution with a molar concentration of 0.001~0.1mol / L, mix organic amines with alcohol to prepare an organic amine alcohol solution with a concentration of 0.0025~0.25mol / L, and Saline solution and organic amine alcohol solution are mixed, so that the molar ratio of transition metal inorganic salt to organic amine is 1:1.5~8, and stirred at 25°C for 0.5~10min at a stirring speed of 100~1000r / min to obtain metal-containing For the turbid solution of organic amine complexes of ions, add a non-polar organic solvent to the turbid solution, stir for 0.5-10min at a stirring speed of 300-800r / min, and let it stand for 5-15min to obtain the organic compound of metal ions Amine complex non-polar organic so...

specific Embodiment approach 2

[0048] Embodiment 2: This embodiment differs from Embodiment 1 in that: in Step 1, the transition metal inorganic salt is prepared into a solution with a molar concentration of 0.01-0.05 mol / L. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0049] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the molar ratio of transition metal inorganic salt to organic amine in step 1 is 1:3.5~6. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a method for preparing two-dimensional self-supporting ultrathin transition metal sheets, relating to a method for preparing ultrathin transition metal sheets. The invention is designed for solving the problem of complicated process existing in the existing method for preparing two-dimensional self-supporting ultrathin transition metal sheets. The method comprises the following steps of: 1, preparing a non-polar organic solution of organic amine complexes containing metal ions; 2, carrying out reduction on the metal ions in the organic amine complexes containing metal ions so as to obtain black powder; and 3, carrying out high-temperature roasting on the black powder obtained in the step 2 so as to obtain a two-dimensional self-supporting ultrathin sheet subjected to heat treatment. A two-dimensional self-supporting ultrathin transition metal sheet prepared by using the method disclosed by the invention does not need to use a hard template, so that an operation of template removal is not required to be performed in follow-up treatment, therefore, the process is relatively simple, the cost is low, and the prepared two-dimensional self-supporting ultrathin transition metal sheet has good magnetic properties. The method disclosed by the invention is applied to the preparation field of ultrathin transition metal sheets.

Description

technical field [0001] The invention relates to a preparation method of a transition metal ultrathin sheet. Background technique [0002] Two-dimensional nanomaterials such as graphene have attracted much attention because of their unique physical and chemical properties and wide application prospects. Two-dimensional ultra-thin sheet metal sulfides have high energy / electron storage specific capacity; H. Welle et al. found that ultra-thin sheets assembled by nano-units can not only maintain the quantum properties of zero-dimensional nano-units, but also The stretching of the three-dimensional space makes the ultra-thin sheet materials have both excellent mechanical properties and electron transport capabilities. At present, the preparation method of two-dimensional thin-layer materials is single, mainly based on a flat solid-phase template, which is prepared by physical, chemical deposition or crystal growth methods. To obtain a self-supporting two-dimensional ultra-thin la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/31B22F9/24
Inventor 付宏刚杜世超任志宇孔令俊
Owner HEILONGJIANG UNIV
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