Cobalt piece supported composite photocatalytic material of ZnO nanoneedles and ZIF-67 as well as preparation and application of cobalt piece supported composite photocatalytic material

A technology of ZIF-67 and photocatalytic materials, applied in the direction of chemicals for biological control, organic compound/hydride/coordination complex catalyst, application, etc., can solve problems such as insufficiency, achieve low recombination rate, prolong Effect of contact time, mineralized bacterial structure

Active Publication Date: 2019-04-26
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Cobalt piece supported composite photocatalytic material of ZnO nanoneedles and ZIF-67 as well as preparation and application of cobalt piece supported composite photocatalytic material
  • Cobalt piece supported composite photocatalytic material of ZnO nanoneedles and ZIF-67 as well as preparation and application of cobalt piece supported composite photocatalytic material
  • Cobalt piece supported composite photocatalytic material of ZnO nanoneedles and ZIF-67 as well as preparation and application of cobalt piece supported composite photocatalytic material

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Example Embodiment

[0050] Example 1

[0051] In the present invention, the preparation steps of the needle-shaped visible photocatalytic material loaded on the cobalt sheet are described in detail as follows:

[0052] Step 1: Etching of Co sheet:

[0053] First, the Co sheets were ultrasonically cleaned in acetone solution and ethanol solution for 0.5 h, and then vacuum-dried for 6 h. In the electrolyte solution containing ethylene glycol and glycerol (1 / 3, v / v), add 5.4mL H 2 O and 2.05gNH 4 F, using a DC power supply, using a Co sheet as an anode and a platinum sheet as a cathode, under the double-electrode structure, electrochemically anodized at 0°C and 30V for 4h to obtain Co 3 o 4 nanoporous layer. After the Co sheet was anodized, it was rinsed with ethanol and dried in a vacuum oven for 6 h. Then put it into an oven, heat treatment at a rate of 3°C / min to 350°C for 30min.

[0054] Step 2: Preparation of ZnO nanoneedles supported on Co sheets:

[0055] The heat-treated Co sheet was...

Example Embodiment

[0066] Example 2

[0067] The preparation process was the same as that described in Example 1, and the obtained catalyst material was applied to antibacterial reactions under dark conditions.

[0068] The dark reaction antibacterial activity effect of the sample prepared by embodiment 2, such as Image 6 As shown, it shows that the sample prepared in Example 2 has less antibacterial activity under photocatalytic conditions, and the bactericidal rate is about 10%.

Example Embodiment

[0069] Example 3

[0070] The preparation process is the same as that described in Example 1, and the obtained catalyst material is applied to antibacterial reaction under simple light conditions.

[0071] The photocatalytic antibacterial activity effect of the sample prepared in embodiment 3, such as Image 6 As shown, it shows that the sample prepared in Example 3 has less antibacterial activity under photocatalytic conditions, and the bactericidal rate is about 50%.

[0072] Image 6 It is the comparison of the antibacterial activity of the photocatalysis of embodiment 1, the dark reaction of embodiment 2, and the photocatalysis of embodiment 3. As can be seen from the figure, the same sample prepared by embodiments 1, 2, and 3 has the largest antibacterial activity under the condition of photocatalysis , the bactericidal rate is about 60% after half an hour, and the antibacterial activity is the lowest under dark reaction conditions, and the bactericidal rate is only 10%...

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Abstract

The invention discloses a cobalt piece supported composite photocatalytic material of ZnO nanoneedles and ZIF-67 as well as a preparation and application of the cobalt piece supported composite photocatalytic material, and belongs to the field of technology application of photoelectrocatalysis material preparation. The cobalt piece supported composite photocatalytic material of ZnO nanoneedles andZIF-67 comprises the ZnO nanoneedles at the outermost layer, a ZIF-67 crystal is grown at the bottoms of the ZnO nanoneedles, and Co3O4 nanopores are uniformly and densely distributed at a lower layer. An electrode piece made of the cobalt piece supported composite photocatalytic material is applied to photoelectrocatalysis antibiosis. The composite material is simple to prepare, and raw materials are easy to obtain. As a photoelectrode, the composite material has relatively good visible light response, relatively high stability and excellent photoelectrocatalysis antibacterial properties, and can be applied to fields such as photoelectrocatalysis, pollutant purification and the like.

Description

technical field [0001] The invention belongs to the application field of preparation technology of photoelectric catalysis materials, and relates to the preparation and application of ZnO nanoneedles loaded on cobalt sheets and ZIF-67 composite photocatalytic materials prepared by electrochemical etching method, self-assembly and hydrothermal method. Background technique [0002] With the rapid development of global industry, environmental problems have become increasingly prominent. Photocatalytic technology is favored because it can significantly improve the photocatalytic effect by applying a weak voltage to effectively solve the problem of environmental pollution. At the same time, photoelectrocatalytic technology has outstanding advantages such as low energy consumption, mild reaction conditions, wide application range, and can reduce secondary pollution. However, there are still shortcomings such as difficulty in effectively capturing bacteria and continuing mineraliza...

Claims

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Application Information

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IPC IPC(8): B01J31/26B01J35/10A01N59/16A01N25/10A01P1/00
CPCA01N25/10A01N59/16B01J31/26B01J35/0013B01J35/004B01J35/1028B01J2531/0241B01J2531/845
Inventor 霍宇凝杨玉萍李慧帆丁梦娜罗柳林邹泉张子平裴文凯李和兴
Owner SHANGHAI NORMAL UNIVERSITY
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