CN114032671A

CN114032671A - Fabric with antibacterial function

Info

Publication number: CN114032671A
Application number: CN202111576746.3A
Authority: CN
Inventors: 奥格博多; 王玉兰
Original assignee: Binzhou Blu New Material Technology Center
Current assignee: Binzhou Blu New Material Technology Center
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-02-11

Abstract

The invention relates to an antibacterial functional fabric which is characterized by comprising the following antibacterial agents, wherein the preparation method comprises the following steps: (1) dissolving cerium salt, magnesium salt, tungsten salt and bismuth salt in a certain molar ratio in deionized water, then adding citric acid and hydroxypropyl methyl cellulose, ultrasonically mixing uniformly, and heating and refluxing for 2-3h at 90-100 ℃ to obtain Ce-Mg co-doped bismuth tungstate; (2) dissolving Ce-Mg co-doped bismuth tungstate in deionized water, then adding tetrabutyl titanate and CTAB, heating and refluxing for 1-2h at 80-100 ℃, thereby obtaining the nano TiO loaded on the Ce-Mg co-doped bismuth tungstate₂A composite of nanoparticles; (3) the composite material is placed in a tube furnace and heated at the temperature of 300 ℃ to 400 ℃ to obtain the Ce-Mg co-doped Bi₂WO₆‑TiO₂Composite material prepared by co-doping Ce-Mg with Bi₂WO₆‑TiO₂Compounding to synergistically improve antibacterial property.

Description

Fabric with antibacterial function

Technical Field

The invention belongs to the technical field of textiles.

Background

In recent years, with the continuous progress of technology and the continuous improvement of life quality, people pursue the cleanness and comfort of daily living environment, and begin to put forward higher requirements on the quality and functions of textiles, and people pursue fabrics not only in the aspects of comfort, heat preservation and the like, but also hope that the fabrics have the effect of killing or inhibiting microorganisms such as bacteria, fungi, viruses and the like; the textiles used in daily life are very easy to overgrow with bacteria, and after long-time use, more bacteria are easy to breed, so that the fabric becomes hard, discolors and even emits unpleasant taste, and the fabric is not sanitary and has poor comfort; by endowing the textile fabric with antibacterial property, the textile fabric can be prevented from being damaged by bacteria or virus contamination, infectious diseases can be prevented, the health and comfort of human bodies are ensured, the cross infection rate of public environments is reduced, and the textile fabric has a new health care function.

CN110528268A discloses a nano light purification fabric and a manufacturing method thereof. According to the invention, the nano-grade light purification fabric is obtained by carrying out hydrothermal reaction on graphene-chitosan composite aerogel micro-powder and a titanium source in an acid solution to prepare the nano-grade purification finishing agent, dipping a base layer cloth in a mixed solution of the nano-grade light purification finishing agent and water, baking, washing with water and drying. The nanometer light purification fabric provided by the invention has long-acting mildew-proof and antibacterial functions; the nano light purification fabric provided by the invention has the effects of purifying air and removing formaldehyde, and can continuously and stably release negative ions.

CN107142718A discloses a nano zinc oxide/silver composite antibacterial agent and a preparation method thereof, firstly, nano zinc oxide and a silane coupling agent KH-560 are taken as raw materials to prepare epoxy nano zinc oxide; and then preparing the nano zinc oxide/silver composite antibacterial agent by using silver nitrate, epoxy nano zinc oxide and sodium citrate as raw materials through a chemical reduction method. The nano zinc oxide/silver composite antibacterial agent is applied to antibacterial finishing of cotton fabrics, and the broad-spectrum high efficiency of the antibacterial agent is improved through the synergistic antibacterial effect of ZnO and Ag; the antibacterial washable performance of the cotton fabric is improved through the cross-linking of the epoxy group on the surface of the nano ZnO and the hydroxyl group on the surface of the cotton fabric.

Disclosure of Invention

The invention aims to provide a mildew-proof and antibacterial fabric agent aiming at the technical problem that the existing fabric is poor in antibacterial capability.

The antibacterial functional fabric is characterized by comprising the following antibacterial agents, and the preparation method comprises the following steps: (1) dissolving cerium salt, magnesium salt, tungsten salt and bismuth salt in a certain molar ratio in deionized water, then adding citric acid and hydroxypropyl methyl cellulose, ultrasonically mixing uniformly, and heating and refluxing for 2-3h at 90-100 ℃ to obtain Ce-Mg co-doped bismuth tungstate;

(2) dissolving Ce-Mg co-doped bismuth tungstate in deionized water, then adding tetrabutyl titanate and CTAB, heating and refluxing for 1-2h at 80-100 ℃, thereby obtaining the nano TiO loaded on the Ce-Mg co-doped bismuth tungstate₂A composite of nanoparticles;

(3) the composite material is placed in a tube furnace and heated at the temperature of 300 ℃ to 400 ℃ to obtain the Ce-Mg co-doped Bi₂WO₆-TiO₂A composite material.

Preferably, the tungsten salt is sodium tungstate; the bismuth salt is bismuth nitrate or bismuth acetate; cerium salt and magnesium salt are respectively cerium nitrate and magnesium nitrate;

preferably, the molar ratio of the tungsten salt to the bismuth salt, cerium salt and magnesium salt is 1: 1: (0.05-0.1): (0.05-0.1);

preferably, the tungsten salt: citric acid: the mass ratio of the hydroxypropyl methyl cellulose is 1: (0.2-0.4): (0.2-0.5);

the technical effects are as follows:

the method adds citric acid and hydroxypropyl methyl cellulose to accurately regulate and control the material structure in the heating reflux process so as to obtain the nanorod-shaped Ce-Mg co-doped Bi₂WO₆The specific surface area of the catalytic material is greatly improved, the dispersibility of the material is improved, and the reduction of active sites caused by agglomeration is avoided; by the pair of Bi₂WO₆Co-doping Ce and Mg, and allowing Ce and Mg to enter Bi₂WO₆Ce widens the photoresponse range of the crystal lattice, and Mg doping can effectively reduce Bi₂WO₆The wide band gap of the quantum dots improves the antibacterial activity. By co-doping Ce-Mg with Bi₂WO₆With anatase type TiO₂The two are compounded to form a heterojunction structure, and the heterojunction structure is cooperated to kill bacterial microorganisms efficiently under the condition of visible light; the whole process mainly adopts a heating reflux technology, and overcomes the technical defects of high requirements and incapability of industrialization of conventional hydrothermal experiments.

Drawings

FIG. 1 is an SEM image of the composite material of example 1.

Detailed Description

Example 1

(1) 0.5mmol cerium nitrate, 0.5mmol magnesium nitrate and 7mmol sodium tungstate, 7mmol bismuth nitrate were dissolved in 50ml deionized water, followed by addition of citric acid, hydroxypropyl methylcellulose, tungsten salt: citric acid: the mass ratio of the hydroxypropyl methyl cellulose is 1: 0.2: 0.2; ultrasonically mixing uniformly, and heating and refluxing for 2h at 90 ℃ to obtain Ce-Mg co-doped bismuth tungstate;

(2) dissolving Ce-Mg co-doped bismuth tungstate into 50ml of deionized water, then adding 3mmol of tetrabutyl titanate and 18Mg of CTAB, and heating and refluxing for 1h at 80 ℃, thereby obtaining the Ce-Mg co-doped bismuth tungstate with nano TiO loaded thereon₂A composite of nanoparticles;

(3) placing the composite material in a tubular furnace, and heating and treating for 1h at 300 ℃ to obtain Ce-Mg co-doped Bi₂WO₆-TiO₂A composite material.

Comparative example 1

0.5mmol cerium nitrate, 0.5mmol magnesium nitrate and 7mmol sodium tungstate, 7mmol bismuth nitrate were dissolved in 50ml deionized water, followed by addition of citric acid, hydroxypropyl methylcellulose, tungsten salt: citric acid: the mass ratio of the hydroxypropyl methyl cellulose is 1: 0.2: 0.2; and (3) uniformly mixing by ultrasonic, heating and refluxing for 2h at 90 ℃, washing the product, placing the product in a tubular furnace, and heating and treating for 1h at 300 ℃ to obtain the Ce-Mg co-doped bismuth tungstate.

Comparative example 2

Adding 3mmol tetrabutyl titanate and 18mg CTAB into 50ml deionized water, and heating and refluxing for 1h at 80 ℃ to obtain TiO₂Putting the sol into a tube furnace, and heating for 1h at 300 ℃ to obtain TiO₂(ii) a The experimental test is carried out by adopting the GB/T30706 and 2019 standard to test the sterilization rate of the examples and the comparative examples.

	Antibacterial rate of Escherichia coli	Average antibacterial rate of golden yellow grape balls
			Example 1	99.9％	99.9％
Comparative example 1	82.1％	79.3％
			Comparative example 2	89.1％	90.4％

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The antibacterial functional fabric is characterized by comprising the following antibacterial agents, and the preparation method comprises the following steps:

(1) dissolving cerium salt, magnesium salt, tungsten salt and bismuth salt in a certain molar ratio in deionized water, then adding citric acid and hydroxypropyl methyl cellulose, ultrasonically mixing uniformly, and heating and refluxing for 2-3h at 90-100 ℃ to obtain Ce-Mg co-doped bismuth tungstate;

(2) dissolving Ce-Mg co-doped bismuth tungstate inAdding tetrabutyl titanate and CTAB into deionized water, and heating and refluxing for 1-2h at 80-100 ℃ to obtain Ce-Mg co-doped bismuth tungstate with nano TiO loaded thereon₂A composite of nanoparticles;

2. The antibacterial functional fabric according to claim 1, wherein the tungsten salt is sodium tungstate; the bismuth salt is bismuth nitrate or bismuth acetate; the cerium salt and the magnesium salt are respectively cerium nitrate and magnesium nitrate.

3. The antibacterial functional fabric according to claim 1, wherein the molar ratio of the tungsten salt to the bismuth salt to the cerium salt to the magnesium salt is 1: 1: (0.05-0.1): (0.05-0.1).

4. The antibacterial functional fabric according to claim 1, wherein the ratio of tungsten salt: citric acid: the mass ratio of the hydroxypropyl methyl cellulose is 1: (0.2-0.4): (0.2-0.5).

5. The antibacterial functional fabric according to claim 1, wherein the ratio of tetrabutyl titanate to CTAB is (1-3) mmol: (10-50) mg.