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Preparation method and application of Ru/Cu-BTC metal organic framework material

A metal-organic framework, cu-btc technology, applied in the direction of non-metallic elements, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problem of low photogenerated carrier transfer rate and separation efficiency, Unstable catalyst cost, low photocatalytic efficiency and other problems, to achieve the effect of large promotion value, improved catalytic activity, high photocatalytic hydrogen evolution activity

Pending Publication Date: 2021-08-17
CHONGQING TECH & BUSINESS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problems of unstable catalyst and high cost of catalyst preparation process in the prior art, as well as low photocatalytic efficiency due to low transfer rate and separation efficiency of photogenerated carriers, providing A method and application of enhancing the stability of MOFs while enhancing their photocatalytic activity

Method used

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  • Preparation method and application of Ru/Cu-BTC metal organic framework material
  • Preparation method and application of Ru/Cu-BTC metal organic framework material
  • Preparation method and application of Ru/Cu-BTC metal organic framework material

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Preparation of Cu-BTC:

[0028] Cu(NO 3 ) 3 ﹒ 3H 2 O (0.725g) and H 3 BTC (0.420g) was ultrasonically dispersed in a mixed solution of 12ml of water and ethanol, then transferred to a reaction kettle and reacted at 150°C for 24h. After cooling, it was washed several times with deionized water and ethanol, and finally dried in vacuum at 80°C for 12h.

Embodiment 2

[0030] Preparation of Zn-BTC, Co-BTC:

[0031] 12mmol Zn(NO 3 ) 2 ·6H 2 O and 8 mmol H 3 BTC was dispersed into a mixed solution of 200ml ethanol and water, fully dissolved, added 24mmol NaOH and stirred for 30min, finally washed with deionized water and ethanol several times, and finally dried in vacuum at 80°C for 12h.

Embodiment 3

[0033] Preparation of Ce-BTC:

[0034] 10mmol Ce(NO 3 ) 3 ·6H 2 O and 3 mmol H 3 BTC was dissolved in 50ml of DMF, then transferred to a reaction kettle and reacted at 130°C for 24h, washed with DMF and ethanol several times after cooling, and finally dried in vacuum at 80°C for 12h.

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Abstract

The invention discloses a preparation method of a metal organic framework material (Ru / Cu-BTC) with enhanced water stability and photocatalytic activity and application of the metal organic framework material in photocatalytic water desorption for hydrogen evolution. The preparation process of the water-unstable Cu-BTC material and the enhanced stable material Ru / Cu-BTC comprises the following steps: (1) ultrasonically dispersing Cu (NO3) 3.3 H2O (0.725 g) and H3BTC (0.420 g) in a mixed solution of water and ethanol, then transferring into a reaction kettle to react for 24 hours at the temperature of 150 DEG C, cooling, centrifuging the obtained blue solid product, washing with deionized water and ethanol for multiple times, and finally carrying out vacuum drying at 80 DEG C for 12 hours; and (2) dispersing the prepared Cu-BTC into water, then adding a certain amount of RuCl3, stirring for 12 hours, then centrifuging, and carrying out vacuum drying to obtain the product Ru / Cu-BTC. The Ru / Cu-BTC material prepared by the invention not only can enhance the stability of Cu-BTC in water, but also can improve the photocatalytic activity and promote photocatalytic hydrogen evolution from water, and the hydrogen evolution rate of the Ru / Cu-BTC material is improved by 50% compared with that of pure Cu-BTC and is as high as 15814.8 [mu] mol.g <-1 >. H <-1 >.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a preparation method and application of Ru / Cu-BTC metal-organic framework materials (MOFs). Background technique [0002] The extensive use of fossil fuels has brought a great sense of crisis to the environment and energy. It is particularly important for human beings to find clean and sustainable energy to replace fossil fuels. Hydrogen energy is a renewable energy source that does not produce other pollutants after combustion. However, the current way to obtain hydrogen energy is mainly through the conversion of fossil fuels. According to the latest plan of the European Union, water analysis hydrogen will replace the method of fossil fuel hydrogen production. Photolysis of water can directly convert solar energy into hydrogen energy, so it is particularly important to find cheap and efficient photocatalysts. [0003] Metal-organic frameworks (MOFs) assembled from organic l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01J31/22C01B3/04
CPCC08G83/008B01J31/1691B01J31/2239C01B3/042B01J2531/0213B01J2531/16B01J2531/26B01J2531/845B01J2531/38B01J2531/54C01B2203/0277B01J35/39Y02E60/36
Inventor 夏济和
Owner CHONGQING TECH & BUSINESS UNIV
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