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cu/tio 2 /Diatom mud composite antibacterial material, preparation method and application thereof

A technology of compounding antibacterial and diatom mud is applied in the field of antibacterial materials to achieve the effect of enhancing photocatalytic activity, improving distribution and dispersibility, and having good antibacterial effect.

Active Publication Date: 2022-07-19
QUJING NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the existing antibacterial diatomite is to physically mix the antibacterial agent to realize the improvement of the antibacterial performance of diatomite. No promotion of optimization, therefore, limited improvement in antimicrobial properties

Method used

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  • cu/tio <sub>2</sub> /Diatom mud composite antibacterial material, preparation method and application thereof
  • cu/tio <sub>2</sub> /Diatom mud composite antibacterial material, preparation method and application thereof
  • cu/tio <sub>2</sub> /Diatom mud composite antibacterial material, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0057] Cu / TiO 2 / The preparation method of diatom mud composite antibacterial material, comprising the following steps:

[0058] Step 1: Accurately weigh 0.005g of diatomite with an analytical balance, place it in a 50ml beaker, add 37.5ml of ethylene glycol solution, and seal the film with ultrasound for 10min to obtain a diatomite dispersion;

[0059] Step 2: Pipette TiCl to the diatomite dispersion in Step 1 4 800uL was placed in a beaker, and then 4.5ml of n-dodecanol solution was added dropwise, and the film was sealed with ultrasound to obtain a yellow viscous liquid.

[0060] Step 3: add 0.005g CuSO4 to the viscous liquid in step 2, continue to seal the film and ultrasonically, until the CuSO4 dissolves to obtain the reaction precursor liquid;

[0061] Step 4: Transfer the reaction precursor liquid in Step 3 to a high-pressure reactor, and store it in an oven at 180° C. for 12 hours. Get milk tea color liquid;

[0062] Step 5: Centrifuge the reaction solution obtai...

Embodiment 2- Embodiment 6

[0064] The difference between Example 2-Example 6 and Example 1 is the difference in reaction temperature, see Table 3 below for details:

[0065] Example Reaction temperature (℃) Example 2 155 Example 3 160 Example 4 165 Example 5 170 Example 6 175

Embodiment 7- Embodiment 12

[0067] The difference between Example 7-Example 12 and Example 1 is that the dosage of dodecanol is 7.5ml, and the TiCl 4 The different dosages are shown in Table 4 below:

[0068]

[0069]

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Abstract

The invention discloses Cu / TiO 2 / Diatom mud composite antibacterial material, preparation method and application, solve the problem that the existing antibacterial diatomite is to physically mix the antibacterial agent, and this macro-mixing is not only unevenly mixed, but also does not promote the optimization of the adsorption performance of diatomite Therefore, the bacteriostatic properties are not ideal technical problems. The composite antibacterial material of the present invention contains TiO 2 and Cu 4 Ti 2 O antibacterial substance, the preparation method of the catalyst of the present invention comprises: dissolving diatomite in ethylene glycol to obtain a diatomite dispersion; adding TiCl to the diatomite dispersion 4 solution, and then add n-dodecanol for dispersion treatment to obtain a viscous liquid; add CuSO to the viscous liquid 4 and dissolving to obtain a reaction precursor liquid; sealing the reaction precursor liquid at a reaction temperature of 160-200°C to obtain a reaction liquid; centrifuging, washing and drying the obtained reaction liquid to obtain an antibacterial composite diatom mud. The TiO produced by the present invention 2 and Cu 4 Ti 2 O is evenly distributed in diatom mud, with excellent pore structure and better antibacterial effect.

Description

technical field [0001] The invention relates to the technical field of antibacterial materials, in particular to a Cu / TiO 2 / Diatom mud composite antibacterial material, preparation method and application thereof. Background technique [0002] Diatomaceous earth is diatomaceous earth, which is a siliceous rock mainly composed of the remains of ancient diatoms. Its chemical composition is based on SiO 2 Mainly, available SiO 2 ·nH 2 O said that the main component is opal and its variants, which are rich in a variety of beneficial minerals and have a light and soft texture. Electron microscopy shows that the surface of the particles has numerous tiny pores, and the size of the pores is about nanometers. Due to the large pores of diatomite, it has attracted great research attention in adsorption applications and is one of the promising templates for the preparation of porous composites. Therefore, diatomaceous earth has excellent adsorption properties. In addition, diatom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16A01N59/20B01J23/72A01N25/08A01P1/00B01J35/10
CPCA01N59/16A01N59/20A01N25/08B01J23/72B01J35/615B01J35/633B01J35/647B01J35/39
Inventor 徐晓林缪应纯刘开全刘艳米唐旭其李艳
Owner QUJING NORMAL UNIV