Piezoelectric catalytic porous ceramic material and preparation method and application thereof

A porous ceramic and piezoelectric technology, applied in ceramic products, chemical instruments and methods, applications, etc., can solve the problems of increasing secondary greenhouse gas emissions and increasing costs, and achieve the effects of avoiding emissions, low cost, and stable performance

Pending Publication Date: 2020-04-17
苏州尼普环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, methods such as spraying method, thermal storage combustion method (RTO), catalytic combustion method (RCO) and zeolite runner method all require additional energy supply, which not only increases the cost, but also increases the emission of secondary greenhouse gases.

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0029] Embodiments of the present invention also provide a method for preparing a piezoelectric catalytic porous ceramic material, which includes the following steps:

[0030] Step 1: Provide a titanate solution with a molar mass ratio of titanium ions and positive divalent cations of 1:1, soak the porous ceramic substrate in the titanate solution to fully absorb titanium ions and positive divalent cations, and then remove the The porous ceramic substrate is placed in NaOH solution and soaked for 3-5h.

[0031] Step 2: Repeat the treatment of the porous ceramic substrate for 3-10 times according to the method of Step 1, and then react at a temperature of 850-1050° C. for 4-12 hours.

[0032] Step 3: repeating the operations of step 1 and step 2 until all the titanium ions and positive divalent cations are adsorbed on the surface and inside of the porous ceramic matrix to obtain the piezoelectric catalytic porous ceramic material.

[0033] Further, the concentration of the NaO...

Embodiment 1

[0040] Step 1: Provide a titanate solution with a molar mass ratio of titanium ions and barium ions of 1:1, soak the porous ceramic substrate in the titanate solution to fully absorb titanium ions and barium ions, and then place the porous ceramic substrate after adsorption treatment The ceramic substrate was placed in 300mL of 1.0mol / L NaOH solution and soaked for 3h.

[0041] Step 2: Repeat the treatment of the porous ceramic substrate 5 times according to the method of Step 1, and then react at a temperature of 1000° C. for 8 hours.

[0042] Step 3: repeating the operations of step 1 and step 2 until all the titanium ions and barium ions are adsorbed on the surface and inside of the porous ceramic substrate to obtain the piezoelectric catalyzed porous ceramic material.

Embodiment 2

[0044] Step 1: Provide a titanate solution with a molar mass ratio of titanium ions and magnesium ions of 1:1, soak the porous ceramic substrate in the titanate solution to fully absorb titanium ions and magnesium ions, and then place the porous ceramic substrate after adsorption treatment The ceramic substrate was placed in 300mL 0.5mol / L NaOH solution and soaked for 5h.

[0045] Step 2: Repeat the treatment of the porous ceramic substrate 8 times according to the method of Step 1, and then react at a temperature of 940° C. for 8 hours.

[0046] Step 3: repeating the operations of step 1 and step 2 until all the titanium ions and magnesium ions are adsorbed on the surface and inside of the porous ceramic substrate to obtain the piezoelectric catalyzed porous ceramic material.

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Abstract

The invention provides a piezoelectric catalytic porous ceramic material and a preparation method and application thereof. The material comprises a porous ceramic matrix and a catalytic unit which isattached to the surface and the interior of the matrix and has a piezoelectric effect, wherein the catalytic unit at least comprises titanate, and a titanate material comprises titanium ions and positive divalent cations in a molar mass ratio of 1: 1. The piezoelectric catalytic porous ceramic material provided by the invention has a piezoelectric effect, can efficiently degrade volatile organic compounds under the action of wind energy, mechanical energy or sound wave energy, does not need to additionally provide energy, and avoids emission of secondary greenhouse gas. The piezoelectric catalytic porous ceramic material is stable in performance, reusable and low in cost, and the preparation method is simple, feasible and environmentally-friendly. The piezoelectric catalytic porous ceramicmaterial is applied to an industrial dust remover, and can remove toxic and harmful gas while removing dust; and when applied to an air purifier and an air conditioner, the piezoelectric catalytic porous ceramic material overcomes the problem that a photocatalyst needs to be driven by a light source and the problem that activated carbon needs to be frequently replaced after adsorption is saturated.

Description

technical field [0001] The invention relates to a piezoelectric catalysis porous ceramic material, in particular to a piezoelectric catalysis porous ceramic material, a preparation method and its application in air purification, belonging to the technical field of environmental protection. Background technique [0002] The methods for purifying air in the prior art include activated carbon adsorption, photocatalytic oxidation, and low-temperature plasma oxidation. The activated carbon adsorption method is easy to reach adsorption saturation, and must be replaced after a certain period of time, which brings difficulties to the subsequent treatment. Volatile organic compounds (VOCs) gases in industry are degraded by spray method, regenerative combustion method (RTO), catalytic combustion method (RCO) and zeolite runner method. However, spraying method, thermal storage combustion method (RTO), catalytic combustion method (RCO) and zeolite runner method all require additional e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/85C04B38/00B01J35/10B01J23/02B01J23/14B01J21/10
CPCC04B41/5007C04B41/85C04B41/009C04B38/00B01J35/0033B01J35/1061B01J23/02B01J23/14C04B33/00C04B35/00C04B41/4535C04B41/0072
Inventor 梁静刘守清
Owner 苏州尼普环境科技有限公司
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