Mesoporous nanorod-like catalyst as well as preparation method and application thereof

A nano-rod-shaped, catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the waste of resources and energy, increase processing energy consumption, utilization rate Low and other problems, to achieve the effect of improving efficiency, saving processing energy costs, and improving utilization

Active Publication Date: 2020-11-03
GUANGZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, due to the existence of the rate-limiting step in the classic Fenton reaction, it not only has poor reactivity under neutral conditions, but also has serious resource and energy waste problems, such as H 2 o 2 Finally, it is decomposed into oxygen by ineffective oxidation, making its utilization rate low; iron ions are continuously consumed, and finally a large amount of iron sludge is formed, which wastes resources and increases processing energy consumption

Method used

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  • Mesoporous nanorod-like catalyst as well as preparation method and application thereof
  • Mesoporous nanorod-like catalyst as well as preparation method and application thereof
  • Mesoporous nanorod-like catalyst as well as preparation method and application thereof

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Embodiment approach

[0045] This implementation is an embodiment of a method for preparing a mesoporous nanorod catalyst of the present invention, which includes the following steps:

[0046] (1) 2.975g of Zn(NO 3 ) 2 ·6H 2 O and 2.416g of Cu(NO 3 ) 2 ·3H 2 O was added to 100mL deionized water, and stirred at 35°C for 30 minutes to obtain a solution;

[0047] (2) Add 50 mL of 0.4 mol / L sodium hydroxide solution to the solution obtained in step (1), stir and mix well, then adjust the pH value of the system to 11 with ammonia water to obtain a mixed system A;

[0048] (3) Put the mixed system A obtained in step (2) in a closed reaction vessel, and carry out a hydrothermal reaction at a temperature of 150° C., and the hydrothermal reaction time is 8 hours, to obtain a mixed system B;

[0049] (4) After the solid-liquid separation of the mixed system B, the solid was collected, washed with deionized water, dried, and ground in sequence to obtain solid C;

[0050] (5) Put the solid C in a tube f...

Embodiment 2

[0054] This implementation is an embodiment of a method for preparing a mesoporous nanorod catalyst of the present invention, except for the Cu(NO 3 ) 2 ·3H 2 Except that the quality of O is 1.208g, the others are the same as in Example 1, and the catalyst obtained is a copper oxide-doped zinc oxide catalyst, which is referred to as ZnCu 0.5 O catalyst.

Embodiment 3

[0056] This implementation is an embodiment of a method for preparing a mesoporous nanorod catalyst of the present invention, except for the Cu(NO 3 ) 2 ·3H 2 Except that the quality of O is 4.832g, others are the same as in Example 1, and the obtained catalyst is a copper oxide-doped zinc oxide catalyst, which is referred to as ZnCu 2 O catalyst.

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Abstract

The invention provides a mesoporous nanorod-like catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a solution containing azinc salt and a copper salt with an inorganic alkali aqueous solution, controlling the pH value to be 10.5-11.5, carrying out a hydrothermal reaction in a closed container, carrying out solid-liquid separation after the reaction is finished, collecting a solid, washing the solid with water, drying, and calcining under the protection of protective gas to obtain the copper oxide doped zinc oxide mesoporous nanorod-like catalyst. The preparation method is simple, equipment requirements are low, the obtained catalyst can effectively and rapidly remove organic pollutants such as rhodamine B, bisphenol A, ibuprofen, diphenhydramine, phenytoin and 2-chlorophenol in water, the removal rate of most organic pollutants can be higher than 80% after the catalyst acts for 2 h, meanwhile, the utilizationrate of hydrogen peroxide in the catalytic degradation process is high. The obtained catalyst is a solid catalyst, is convenient to separate from water, and can still keep a high removal effect on organic pollutants after being recycled.

Description

technical field [0001] The invention belongs to the field of preparation and application of water treatment catalyst materials, and in particular relates to a mesoporous nanorod catalyst, a preparation method and application thereof. Background technique [0002] Environment and energy are two hot topics in the world today. The significance of the Fenton reaction to the environment lies in the ability to use the hydroxyl radicals produced during the reaction to destroy the structure of organic pollutants. However, due to the existence of the rate-limiting step in the classic Fenton reaction, it not only has poor reactivity under neutral conditions, but also has serious resource and energy waste problems, such as H 2 o 2 Finally, it is decomposed into oxygen by ineffective oxidation, which makes its utilization rate low; iron ions are continuously consumed, and finally a large amount of iron sludge is formed, which not only wastes resources but also increases processing ene...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J35/02B01J35/10C02F1/72C02F101/34C02F101/38C02F101/30
CPCB01J23/80B01J23/002C02F1/725C02F1/722C02F2101/40C02F2101/38C02F2101/345C02F2101/34C02F2101/30B01J35/00B01J35/30B01J35/61
Inventor 胡春卢超吕来邓康蓝
Owner GUANGZHOU UNIVERSITY
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