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Anionic type photocatalyst and preparation method thereof

A technology of photocatalyst and negative ion, which is applied in the field of negative ion photocatalyst and its preparation, can solve problems such as hindering the application of photocatalyst TiO, difficult catalytic degradation, high chemical redox potential, etc., to increase contact time and contact area, promote catalytic degradation, improve The effect of catalytic efficiency

Active Publication Date: 2018-03-06
广州绿赋怡居环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] TiO 2 The band gap energy is large, and the photocatalytic performance is limited to the use of ultraviolet light with a wavelength below 387nm. These shortcomings largely hinder the photocatalyst TiO 2 Applications
Some organic pollutants, especially aromatic and other organic pollutants, have high chemical redox potential and are difficult to be degraded by catalysis

Method used

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  • Anionic type photocatalyst and preparation method thereof
  • Anionic type photocatalyst and preparation method thereof
  • Anionic type photocatalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] A negative ion photocatalyst, comprising the following components by weight: 90 parts of titanium dioxide, 20 parts of auxiliary agent, 0.5 part of tourmaline powder, 2 parts of ferrocene, 40 parts of diatomaceous earth and 20 parts of clay; Metal platinum is deposited on the surface of titanium dioxide, and the loading capacity of the metal platinum on titanium dioxide is 0.005g / g; The impurity is 6 mol%; the clay is sepiolite; the tourmaline is ferrite.

[0046] The method for preparing this negative ion photocatalyst comprises the following steps:

[0047] 1) Preparation of cerium-nitrogen co-doped titanium dioxide;

[0048] a) 34g of butyl titanate (0.1mol) and 5mL of acetylacetone were added into 80mL of ethanol to dissolve to obtain a titanium precursor;

[0049] b) Add 0.054g of cerium nitrate (0.1mmol), 1mL of glacial acetic acid, and 0.36g of urea (6mmol) into 10mL of ethanol to dissolve, add dropwise to the above titanium precursor solution, and stir; adjust...

Embodiment 2

[0055] A negative ion photocatalyst, comprising the following components by weight: 100 parts of titanium dioxide, 10 parts of auxiliary agent, 0.1 part of tourmaline powder, 5 parts of ferrocene, 30 parts of diatomaceous earth and 30 parts of clay; Metal platinum is deposited on the surface of titanium dioxide, and the loading capacity of the metal platinum to titanium dioxide is 0.01g / g; The impurity is 8mol%; the clay is attapulgite; the tourmaline is silver gray tourmaline.

[0056] The method for preparing this negative ion photocatalyst comprises the following steps:

[0057] 1) Preparation of cerium-nitrogen co-doped titanium dioxide;

[0058] a) Add 34g of butyl titanate (0.1mol) and 5mL of acetylacetone into 80mL of ethanol and dissolve to obtain a titanium precursor;

[0059] b) Add 0.027g of cerium nitrate (0.05mmol), 1mL of glacial acetic acid, and 0.48g of urea (8mmol) into 10mL of ethanol to dissolve, add dropwise to the above titanium precursor solution, and s...

Embodiment 3

[0065] A negative ion photocatalyst, comprising the following components by weight: 80 parts of titanium dioxide, 2 parts of tourmaline powder, 1 part of ferrocene, 50 parts of diatomaceous earth and 1 part of clay; the titanium dioxide is cerium-nitrogen Co-doped titanium dioxide, the doping amount of cerium is 0.5 mol%, and the doping amount of nitrogen is 5 mol%; metal platinum is deposited on the surface of the titanium dioxide, and the loading capacity of the metal platinum on the titanium dioxide is 0.01g / g; The clay is kaolin; the tourmaline is iron tourmaline and silver gray tourmaline mixed in a weight ratio of 1:1.

[0066] The method for preparing this negative ion photocatalyst comprises the following steps:

[0067] 1) Preparation of cerium-nitrogen co-doped titanium dioxide;

[0068] a) Add 34g of butyl titanate (0.1mol) and 5mL of acetylacetone into 80mL of ethanol and dissolve to obtain a titanium precursor;

[0069] b) Add 0.27g of cerium nitrate (0.5mmol), ...

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Abstract

The invention discloses an anionic type photocatalyst which comprises the following components in parts by weight: 80-100 parts of titanium dioxide, 10-30 parts of a catalyst promoter, 0.1-2 parts oftourmaline powder, 0.1-5 parts of ferrocene and 0.5-30 parts of kieselguhr, wherein a metal platinum is adhered to the surface of the titanium dioxide; and the catalyst promoter is platinum-nitrogen codoped titanium dioxide. The anionic type photocatalyst has relatively good photocatalytic activity within a range of visible light and ultraviolet light, is capable of continuously releasing oxygen anions, is capable of effectively decomposing organic compounds such as formaldehyde and benzene with double bonds and is relatively good in catalysis activity. The invention further provides a preparation method of the anionic type photocatalyst.

Description

technical field [0001] The invention relates to the technical field of air treatment, in particular to a negative ion photocatalyst and a preparation method thereof. Background technique [0002] The photocatalyst is titanium dioxide (TiO 2 ) is a general term for semiconductor materials with photocatalytic function. Photocatalyst can effectively decompose formaldehyde, benzene, ammonia, etc., oxidize and remove nitrogen oxides, sulfides, and various odors in the atmosphere, and play a role in air purification. Due to its high efficiency, low cost, and chemical stability, it has attracted extensive attention in recent years. [0003] TiO 2 The band gap energy is large, and the photocatalytic performance is limited to the use of ultraviolet light with a wavelength below 387nm. These shortcomings largely hinder the photocatalyst TiO 2 Applications. Some organic pollutants, especially aromatic and other organic pollutants, have high chemical redox potential and are difficu...

Claims

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Application Information

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IPC IPC(8): B01J31/38B01J37/03B01J37/08B01J37/10B01D53/86B01D53/44B01D53/72
CPCB01D53/007B01D53/8668B01D53/8687B01J31/38B01J37/038B01J37/08B01J37/10B01D2259/802B01D2259/804B01D2258/06B01J2531/0225B01J2531/842B01J35/39
Inventor 杜春华
Owner 广州绿赋怡居环保有限公司
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