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Photocatalyst Co3O4-CNI and preparation method and application thereof

A photocatalyst, co3o4-cni technology, applied in the field of photocatalysis, can solve the problems of limited increase in photocatalytic efficiency of modified catalysts, inability to meet industrial requirements, complicated operation, etc.

Inactive Publication Date: 2015-12-30
FUYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the above-mentioned preparation method is not only complicated in operation and high in cost of raw materials, but also the degree of increase in the photocatalytic efficiency of the modified catalyst is limited, which cannot meet the industrial requirements.

Method used

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  • Photocatalyst Co3O4-CNI and preparation method and application thereof
  • Photocatalyst Co3O4-CNI and preparation method and application thereof
  • Photocatalyst Co3O4-CNI and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] (1) Accurately weigh 2.0 g of dicyandiamide (abbreviated as DCD) and 1.0 g of ammonium iodide (ammonium iodine) into a dry and clean small beaker, and add 10 mL of distilled water to dissolve it. Then turn on the constant temperature water bath and set the temperature to 80°C. When the water bath temperature is 80°C, put the beaker in the water bath. After the water evaporates, put the sample into a dry and clean mortar and grind it into a fine powder. . Then transfer the ground sample into a dry and clean crucible, place it in a box-type resistance furnace, and roast it at 550°C for 4 hours, cool it and grind it finely to obtain CNI.

[0074] (2) Accurately weigh 0.2g of CNI and put it in a dry and clean small beaker, and accurately weigh 0.0181g of Co(NO 3 ) 2 ·6H 2 O, add 5mL of distilled water to the beaker, and shake the sample added into it evenly. When the temperature of the water bath is 80°C, put the beaker in the water bath, and shake it from time to time d...

Embodiment 2～3

[0076] The operation method of embodiment 2~3 is similar to embodiment 1, difference is only in step 2 Co(NO 3 ) 2 ·6H 2 The O weights were 0.0145g and 0.012g respectively, and the prepared photocatalyst Co 3 o 4 -Co in CNI 3 o 4 The weight ratios to CNI are 1:50 and 1:60, respectively.

Embodiment 4

[0078] The method used in this embodiment is similar to that of Example 1, the only difference is that in step 2, 0.00413g of cobalt carbonate is used to replace cobalt nitrate, and Co in the prepared photocatalyst 3 o 4 The weight ratio to CNI is 1:70.

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Abstract

The invention provides a photocatalyst Co3O4-CNI and a preparation method and application thereof. According to the photocatalyst Co3O4-CNI, nitrogen-containing organic matter and ammonium iodide serve as raw materials, iodine-doped graphite-phase carbon nitride (abbreviated as CNI) can be prepared through a hydrothermal method, then prepared CNI and a cobalt-containing compound react through a hydrothermal method, and optionally, cooling and smashing are performed so that the photocatalyst Co3O4-CNI can be prepared. The prepared photocatalyst has a good catalytic degradation effect on organic dye and particularly azo type organic dye under visible light.

Description

technical field [0001] The invention relates to the field of photocatalysis, in particular to a visible light catalyst or a catalyst and a preparation method and application thereof. Background technique [0002] Graphite carbon nitride (g-C 3 N 4 ) has become a new type of photocatalytic material due to its outstanding advantages of high photocatalytic activity, good stability, low raw material price, and especially no metal. However, single-phase catalysts are usually used due to low quantum efficiency. Its photocatalytic performance is not ideal. because g-C 3 N 4 The high photogenerated electron-hole recombination rate of the material leads to low catalytic efficiency, which limits its application in photocatalysis. [0003] To improve g-C 3 N 4 In recent years, many modification methods have been studied. to g-C 3 N 4 The modified non-metallic elements include S, N, B, F, P, etc. It is generally believed that these non-metallic elements replace the C, N, and H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30
Inventor 崔玉民李慧泉苗慧师瑞娟
Owner FUYANG NORMAL UNIVERSITY
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