[CuCN] crystal material and preparation method thereof

A technology of crystal materials and unit cell parameters, applied in the fields of polycrystalline material growth, crystal growth, chemical instruments and methods, etc., can solve the problems of low yield, complex preparation process, and difficulty in directional design of coordination polymer structures.

Active Publication Date: 2020-10-30
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the [CuCN] coordination polymer structure prepared by the existing aqueous solution is difficult to

Method used

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  • [CuCN] crystal material and preparation method thereof
  • [CuCN] crystal material and preparation method thereof
  • [CuCN] crystal material and preparation method thereof

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specific Embodiment approach 1

[0019] Specific embodiment one: the chemical formula of a kind of [CuCN] crystal material of this embodiment is {[Cu(CN) 2 (2,2′-bipy)][Cu 2 (CN)Cl]} n , where 2,2′-bipy is 2,2′-bipyridine, the crystal system is monoclinic, the space group is C2 / c, and the unit cell parameters are α=90°, β=90°, γ=90°, Z=2.

[0020] The beneficial effect of this embodiment is: the target [CuCN] coordination polymer crystal material is oriented synthesized by a one-step hydrothermal method, and the product is unique (XRD spectrum shows that the coordination polymer has obvious absorption peaks on the corresponding crystal planes. And intensity is bigger, without miscellaneous peak, shows that material has better crystallinity and purity), productive rate is higher (calculated by nickel, productive rate is 65%), and the cyclic voltammetry curve of polymer appears near 50mV Obvious Cu redox process, Cu II / Cu 0 The electrochemical behavior is attributed to Cu under hydrothermal conditions I...

specific Embodiment approach 2

[0021] Specific embodiment two: the preparation method of a kind of [CuCN] crystal material described in this embodiment is carried out according to the following steps:

[0022] 1. Under the conditions of room temperature and stirring speed of 60 to 100 rpm, CuCl 2 2H 2 O was added to the solvent and stirred until CuCl 2 2H 2 O dissolves, and then K is added 4 Fe(CN) 6 ·3H 2 O stirred and dissolved, and then continued to stir for 40-60 minutes to obtain a reaction system. Under the conditions of room temperature and a stirring speed of 60 rpm to 100 rpm, add KF to the reaction system and stir to dissolve, then add 2,2' - the bipyridine is stirred and mixed evenly, and finally adjusted to a pH of 5.5-5.7 and mixed evenly to obtain a reaction liquid;

[0023] The K 4 Fe(CN) 6 ·3H 2 O and CuCl 2 2H 2 The molar ratio of O is 1:(2.15~2.29);

[0024] The K 4 Fe(CN) 6 ·3H 2 The molar ratio of O to KF is 1:(1.56~1.70);

[0025] The K 4 Fe(CN) 6 ·3H 2 The molar rati...

specific Embodiment approach 3

[0029] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the solvent described in step 1 is distilled water. Other steps are the same as in the second embodiment.

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Abstract

The invention discloses a [CuCN] crystal material and a preparation method thereof, and relates to a crystal material and a preparation method thereof. The problems that a [CuCN] coordination polymerstructure prepared from an existing aqueous solution is difficult to design directionally, the preparation process is complex, and the yield is low are solved. The formula of the [CuCN] crystal material is {[Cu(CN)2(2, 2'-bipy)][Cu2(CN)Cl], belongs to a monoclinic system, the space group is C2/c, alpha is 90 degrees, beta is 90 degrees, gamma is 90 degrees, and Z is 2. The preparation method comprises the following steps of: adding CuCl2.2H2O into a solvent, then adding K4Fe(CN)6.3H2O to obtain a reaction system, adding KF into the reaction system, adding 2, 2'-dipyridyl, adjusting the pH value to obtain a reaction solution, and finally conducting crystallizing, cooling, cleaning and drying to obtain the [CuCN] crystal material.

Description

technical field [0001] The present invention relates to crystalline materials and methods for their preparation. Background technique [0002] Generally, an aqueous solution method is used to prepare [CuCN] crystal materials modified by organic ligands. The [CuCN] coordination polymer structure prepared by this method is difficult to design in a directional manner, and the crystallinity and purity of the material are poor. The preparation process is complicated and the yield is low. Therefore, it directly affects the directional synthesis of such materials. Contents of the invention [0003] The purpose of the present invention is to solve the problem that the [CuCN] coordination polymer structure prepared by the existing aqueous solution is difficult to orientate design, the preparation process is complicated and the yield is low, and a kind of [CuCN] crystal material and its preparation method and application are provided . [0004] The chemical formula of a [CuCN] cry...

Claims

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Application Information

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IPC IPC(8): C08G83/00B01J31/22B01J37/10C30B29/58C30B7/10
CPCC08G83/008B01J31/1691B01J35/0033B01J37/10C30B29/58C30B7/10B01J2531/16B01J2531/0216Y02E60/36
Inventor 赵志凤李柏茹陈见围林双燕苏占华
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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