Method for preparing loaded nano zinc oxide functional filter paper

Abstract

The invention discloses a method for preparing loaded nano zinc oxide functional filter paper. The method comprises the following steps: 1) preparing a 45-65% zinc chloride solution; 2) heating the zinc chloride solution to 55-85 DEG C, completely soaking dry filter paper into the zinc chloride solution for 30 seconds to 2 minutes, washing the filter paper with deionized water, and drying so as toobtain a filter paper substrate; 3) putting a material into a polytetrafluoroethylene hydrothermal reaction kettle, sealing the reaction kettle to implement a reaction for 8-36 hours at 80-180 DEG C,cooling, taking out the filter paper, washing with deionized water, and drying, thereby obtaining the loaded nano zinc oxide functional filter paper, wherein the material accounts for 60-80% of the volume of the reaction kettle, the material consists of the filter paper substrate used in the step (2) and an alkali solution in a weight ratio of 10-20g of the filer paper substrate and 50-100ml of the alkali solution. The loaded nano zinc oxide functional filter paper prepared by using the method has good photocatalysis antibacterial properties, a nano zinc oxide crystal can grow on the fiber ofthe filter paper substrate, secondary pollution can be avoided, and the filter paper can be recycled repeatedly and can be widely applied to the field of weater body purification and treatment.

Description

technical field [0001] The invention relates to the field of preparation of nanometer materials, in particular to a preparation method of functional filter paper loaded with nanometer zinc oxide. Background technique [0002] Filter paper is composed of criss-cross fibers. This unique three-dimensional network structure makes the filter paper have a large surface area and porous structure, which endows the filter paper with good mechanical properties and dimensional stability. It can be used for solid / liquid filtration separation, water purification, etc. fields. In the actual application process, with the advancement of nanotechnology and the improvement of water treatment standards, some nanomaterials are functionalized on the surface of filter paper fibers, and the preparation of filter paper with special functions shows greater development prospects. Commonly used filter paper fiber functionalization methods are usually physical adhesion and chemical modification method...

AI Technical Summary

Problems solved by technology

However, the low bonding strength between nano-ZnO and cellulose fibers makes the composite ability of nano-ZnO on cellulose low, and the nanoparticles will inevitably enter the environment, causing secondary pollution, resulting in unsatisfactory application effects. ; (2) the cellulose substrate is immersed in the ZnO precursor solution, so that the Zn 2+ Interact with cellulose to allow ZnO crystals to nucleate and grow directly on the cellulose substrate

The problem of this route is that the operation steps are complicated, the reaction accessibility between ZnO precursor and cellulose is low, the composite amount and composite strength of nano-ZnO on cellulose are limited, and the cellulose carrier does not participate in the control of nano-ZnO crystal size and shape.

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