A preparation method of ag-loaded zno fully mesoporous nanofibers
A nanofiber, mesoporous technology, applied in fiber processing, fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of low specific surface area, limited light absorption capacity, and the inability to effectively exert the advantages of Ag-loaded ZnO composites. , to achieve the effect of simple preparation process and good repeatability
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Embodiment 1
[0042] Take by weighing polyvinylpyrrolidone (PVP) 1.0g and zinc acetate (ZnAc) 2.6g and be dissolved in the mixed solution of 6ml absolute ethanol and 6ml deionized water, add 3wt% tea saponin (foaming) after mixing at room temperature for 10 hours agent, TS) to continue stirring for 1 hour to obtain a precursor spinning solution. After the spinning solution was left to stand, 6ml was measured and injected into a plastic needle tube, and placed on a micro-injection pump, and the injection speed was set at 0.05mm / min. The metal needle was used as the electrospinning anode, and the barbed wire was used as the cathode of the receiving material. The distance between the anode and the cathode was 20 cm. Electrospinning was performed at a high voltage of 12kV to prepare organic precursor fiber materials. Then the organic precursor fiber material was placed in a 60°C constant temperature oven to obtain solid organic precursor fibers such as figure 1 and figure 2 shown. The solid...
Embodiment 2
[0044] The preparation of ZnO fully mesoporous nanofibers is the same as in Example 1, and will not be repeated here. The prepared ZnO fully mesoporous nanofibers were dispersed in 50ml of deionized water to form a suspension, and then 3.0g of AgNO 3 added to the above suspension, under the condition of continuous stirring, irradiated with xenon gas for 2 hours, centrifuged, filtered and dried to obtain Ag-loaded ZnO mesoporous nanofibers. Scanning electron microscopy (SEM) images of the prepared Ag-loaded ZnO mesoporous nanofibers at different magnifications are shown in Fig. Figure 11 and Figure 12 shown. Comparing the results of Example 1, it can be seen that in AgNO 3 When the amount of AgNO3 was increased to 2.0g, the loading of Ag increased significantly, and the size of nanoparticles increased, indicating that the amount of AgNO3 added was crucial to the loading and size of the final Ag nanoparticles.
Embodiment 3
[0046] The preparation of ZnO fully mesoporous nanofibers is the same as in Example 1, and will not be repeated here. The prepared ZnO fully mesoporous nanofibers were dispersed in 50ml of deionized water to form a suspension, and then 5.0g of AgNO 3 added to the above suspension, and irradiated with an ultraviolet lamp for 2 hours under the condition of continuous stirring, centrifuged, filtered, and dried to obtain Ag-loaded ZnO mesoporous nanofibers. Scanning electron microscopy (SEM) images of the prepared Ag-loaded ZnO mesoporous nanofibers under different magnifications are shown in Fig. Figure 13 and Figure 14 shown. Comparing the results of Example 1 and Example 2, it can be seen that in AgNO 3 When the amount of Ag was increased to 5.0g, the loading amount of Ag was further increased, and the size of Ag-loaded particles was also increased again, indicating that by changing the AgNO 3 The amount of addition can realize the effective control of the loading and siz...
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