Polyamidoxime functionalized hyperbranched nano-diamond and its preparation method and application

A nano-diamond, polyamidoxime technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problem of slow adsorption rate, inability to take into account high uranium selectivity and high adsorption capacity , low selectivity of uranium, etc., to achieve the effect of enhancing selectivity, improving chelation efficiency, and large adsorption capacity

Active Publication Date: 2018-06-05
SICHUAN 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 address the deficiencies in the prior art, to provide a polyamide oxime functionalized hyperbranched nano-diamond and its preparation method and application, to solve the problem that the existing porous material adsorbent has low selectivity to uranium and slow adsorption rate , and the existing amidoxime-functionalized adsorption materials cannot take into account the high selectivity and high adsorption capacity for uranium under the condition of low pH range

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  • Polyamidoxime functionalized hyperbranched nano-diamond and its preparation method and application
  • Polyamidoxime functionalized hyperbranched nano-diamond and its preparation method and application

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Embodiment 1

[0044] In the present embodiment, the preparation method of the hyperbranched nano-diamond of polyamidoxime functionalization is as follows:

[0045] (1) Preparation of polyglycerol functionalized nanodiamonds

[0046] Add 300 mg of nano-diamond (ND) and 6.6 g of glycidol into 210 g of chlorobenzene, and ultrasonically disperse at room temperature for 30 minutes until a uniformly dispersed mixed dispersion is obtained. Continue to stir and react for 15 minutes under the heating power condition. After the reaction is completed, the reaction solution is obtained. After the reaction solution is cooled to room temperature, it is suction-filtered with a Buchner funnel, and the filter cake is alternately washed several times with acetone and dimethylformamide. Vacuum drying for 24 hours to obtain gray-black powder, which is polyglycerol functionalized nano-diamond, named ND-OH;

[0047] (2) Preparation of polyacrylonitrile functionalized nanodiamonds

[0048] With 50mg step (1) ga...

Embodiment 2

[0060] In the present embodiment, the preparation method of the hyperbranched nano-diamond of polyamidoxime functionalization is as follows:

[0061] (1) Preparation of polyglycerol functionalized nanodiamonds

[0062] Add 500 mg of nano-diamond (ND) and 11 g of glycidol into 400 g of chlorobenzene, and ultrasonically disperse at room temperature for 60 minutes until a uniformly dispersed mixed dispersion is obtained. The mixed dispersion is placed in a microwave reactor and heated at 600W Continue to stir and react for 30 minutes under power conditions. After the reaction is completed, the reaction solution is obtained. After the reaction solution is cooled to room temperature, it is filtered with a Buchner funnel. The filter cake is washed alternately with acetone and dimethylformamide for several times, and then vacuum Dry for 24 hours to obtain gray-black powder, which is polyglycerol functionalized nano-diamond, named ND-OH;

[0063] (2) Preparation of polyacrylonitrile ...

Embodiment 3

[0068] In the present embodiment, the preparation method of the hyperbranched nano-diamond of polyamidoxime functionalization is as follows:

[0069] (1) Preparation of polyglycerol functionalized nanodiamonds

[0070] Add 500 mg of nano-diamond (ND) and 12.5 g of glycidol into 400 g of chlorobenzene, and ultrasonically disperse at room temperature for 10 minutes to obtain a uniformly dispersed mixed dispersion. Continue to stir and react for 15 minutes under the heating power condition. After the reaction is completed, the reaction solution is obtained. After the reaction solution is cooled to room temperature, it is suction-filtered with a Buchner funnel, and the filter cake is alternately washed several times with acetone and dimethylformamide. Vacuum drying for 24 hours to obtain gray-black powder, which is polyglycerol functionalized nano-diamond, named ND-OH;

[0071] (2) Preparation of polyacrylonitrile functionalized nanodiamonds

[0072] With 100mg step (1) gained ND-...

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Abstract

The invention provides polyamidoxime functionalized hyperbranched nano-diamond. The nano-diamond has a structural formula as shown in the specification, wherein R is nano-diamond, h is an integer more than or equal to 0, and i, j, k, m and n are integers more than 0. The method for preparing the polyamidoxime functionalized hyperbranched nano-diamond comprises the following steps: (1) preparing polyglycerol functionalized nano-diamond; (2) preparing polyacrylonitrile functionalized nano-diamond; and (3) preparing the polyamidoxime functionalized hyperbranched nano-diamond. The polyamidoxime functionalized hyperbranched nano-diamond can be used for solving the problems that an existing porous material adsorbent has low uranium selectivity and low adsorbing speed, and an existing amidoxime functionalized adsorption material cannot take high uranium selectivity and high adsorption capacity into consideration under the condition of a low pH range.

Description

technical field [0001] The invention belongs to the field of carbonaceous material adsorbents, in particular to a hyperbranched nano diamond uranium and its preparation method and application. Background technique [0002] Nuclear energy has attracted more and more attention due to its advantages of high energy density, high efficiency, and stability. In recent decades, with the rapid development of nuclear power technology, nuclear energy has played a major role in promoting the progress of human society. Uranium is currently the most important nuclear fuel, and the reserves of uranium resources in nature are very limited. According to the current energy consumption level, it can only meet the needs of human beings for decades. On the other hand, the utilization of nuclear energy will produce a large amount of uranium-containing radioactive waste water, which poses a potential threat to the human living environment. Therefore, it is of great significance to efficiently sep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30B01J20/28G21F9/12B82Y30/00
CPCB01J20/20B01J20/26B01J20/28014B01J2220/4806B01J2220/4812B82Y30/00G21F9/125
Inventor 马利建李阳李首建
Owner SICHUAN UNIV
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