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Photocatalytic material composed of zno nanoneedles loaded on cobalt sheet and zif-67 and its preparation and application

A technology of ZIF-67 and photocatalytic materials, which is applied in the fields of chemicals for biological control, organic compounds/hydrides/coordination complex catalysts, applications, etc., can solve problems such as insufficiency, and achieve low recombination rate, photoelectric High catalytic activity and good stability

Active Publication Date: 2021-08-20
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, research in this area is still insufficient

Method used

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  • Photocatalytic material composed of zno nanoneedles loaded on cobalt sheet and zif-67 and its preparation and application
  • Photocatalytic material composed of zno nanoneedles loaded on cobalt sheet and zif-67 and its preparation and application
  • Photocatalytic material composed of zno nanoneedles loaded on cobalt sheet and zif-67 and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 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 immersed in a bath ...

Embodiment 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 Figure 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%.

Embodiment 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 Figure 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] Figure 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 photocatalytic material composed of ZnO nanoneedles loaded on a cobalt sheet and ZIF‑67, as well as its preparation and application, and belongs to the application field of photocatalytic material preparation technology. The outermost layer of the photocatalytic material composited with ZnO nanoneedles and ZIF‑67 loaded on the cobalt sheet is ZnO nanoneedles, and the bottom of the ZnO nanoneedles grows ZIF‑67 crystals, and the lower layer is uniform and densely distributed Co 3 o 4 nanoporous. The electrode sheet prepared by the invention is applied to photoelectric catalysis and antibacterial. The preparation of the composite material is simple and the raw materials are easy to obtain. As a photoelectrode, the composite material exhibits good visible light response, high stability and excellent photoelectrocatalytic antibacterial performance, and can be used in fields such as photoelectric antibacterial and pollutant purification.

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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Patent Type & Authority Patents(China)
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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