Monolithic visible light catalytic material and preparation method thereof

A catalytic material, visible light technology, applied in catalyst activation/preparation, chemical instruments and methods, heterogeneous catalyst chemical elements, etc., can solve problems such as unfavorable recycling, high photocatalytic activity, difficult to maintain, etc. Simple, easy-to-control, and easy-to-obtain results

Active Publication Date: 2019-08-02
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the published research reports, the research mainly uses element doping and noble metal deposition, dye sensitization, morphology and structure regulation, and supported nano-photocatalysts to prepare composite photocatalysts to improve photocatalytic efficiency, but the above methods are mainly based on nano-scale materials. and powder materials, which are not conducive to recycling, and it is difficult to maintain a high photocatalytic activity

Method used

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  • Monolithic visible light catalytic material and preparation method thereof
  • Monolithic visible light catalytic material and preparation method thereof
  • Monolithic visible light catalytic material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0023] A monolithic visible photocatalytic material and a preparation method thereof, which are realized according to the following steps:

[0024] (1) Preparation of zirconium oxychloride precursor solution: Weigh 1.5g of zirconium oxychloride, measure 5mL of acetylacetone and 2mL of hydrogen peroxide, and use 20mL of absolute ethanol as a solvent to mix zirconium oxychloride, acetylacetone, Dissolve hydrogen peroxide in absolute ethanol, and stir evenly to obtain a zirconium oxychloride precursor solution;

[0025] (2) Preparation of boric acid solution: Take a certain mass of boric acid according to the molar ratio of zirconium oxychloride to boric acid being 1:6, dissolve boric acid in 20mL of absolute ethanol, heat and stir in a water bath at 60°C for 15min to obtain a boric acid solution.

[0026] (3) Preparation of glucose solution: according to zirconium oxychloride, glucose mass ratio is 3:1, take the glucose of certain quality, dissolve glucose in 20mL deionized wate...

Embodiment 2

[0035] A monolithic visible photocatalytic material and a preparation method thereof, which are realized according to the following steps:

[0036] (1) Preparation of zirconium oxychloride precursor solution: Weigh 1g of zirconium oxychloride, measure 2mL of acetylacetone and 1.5mL of hydrogen peroxide, and use 15mL of absolute ethanol as a solvent to mix zirconium oxychloride, acetylacetone, Dissolve hydrogen peroxide in absolute ethanol, and stir evenly to obtain a zirconium oxychloride precursor solution;

[0037] (2) Preparation of boric acid solution: Take a certain mass of boric acid according to the molar ratio of zirconium oxychloride and boric acid being 1:5, dissolve boric acid in 20mL of absolute ethanol, heat and stir in a water bath at 60°C for 15min to obtain a boric acid solution.

[0038] (3) Preparation of glucose solution: according to the mass ratio of zirconium oxychloride and glucose of 1:1, a certain amount of glucose was weighed, and the glucose was diss...

Embodiment 3

[0043] A kind of integral visible light catalytic material and preparation method thereof are realized according to the following steps:

[0044] (1) Preparation of zirconium oxychloride precursor solution: Weigh 1.2 g of zirconium oxychloride, measure 3 mL of acetylacetone, 2 mL of hydrogen peroxide, use 20 mL of absolute ethanol as a solvent, mix zirconium oxychloride, acetylacetone, Dissolve hydrogen peroxide in absolute ethanol, stir evenly to obtain zirconium oxychloride precursor solution;

[0045] (2) Preparation of boric acid solution: according to the molar ratio of zirconium oxychloride and boric acid as 1:8, a certain mass of boric acid was weighed, and the boric acid was dissolved in 25 mL of absolute ethanol, heated and stirred in a 60°C water bath for 15 min to obtain a boric acid solution.

[0046] (3) preparation of glucose solution: according to zirconium oxychloride, glucose mass ratio is 4:1 to take by weighing a certain quality of glucose, glucose is dissol...

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Abstract

The invention discloses a monolithic visible light catalytic material and a preparation method thereof. The monolithic visible light catalytic material adopts a continuous porous structure, has an easily designed shape, and has excellent adsorption performance and visible-light catalytic degradation performance. The preparation method comprises the following preparation steps: (1), preparing a zirconium oxychloride precursor solution from zirconium oxychloride, acetylacetone, hydrogen peroxide and absolute ethanol as raw materials; preparing a boric acid-ethanol mixed solution by using ethanolas a solvent; preparing a glucose solution by using water as a solvent; preparing an ethyl orthosilicate-ethanol solution by using ethanol as a solvent, and uniformly mixing the solutions to obtain aboron-silicon-zirconium precursor solution; (2), heating the boron-silicon-zirconium precursor solution in a water bath, immersing sponge in the solution, taking out, drying, repeating immersing anddrying, and then performing high-temperature heat treatment to obtain the monolithic visible light catalytic material. The monolithic visible light catalytic material uses the cheap and easily obtained raw materials, is prepared by a simple and easily controlled technology, has a designable sample shape, has relatively large specific surface area, and has the advantages of high-efficiency and stable photocatalytic performance and recycling in the visible light range.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst preparation, in particular to a monolithic visible light catalytic material and a preparation method thereof. Background technique [0002] Environmental issues and energy issues are the greatest challenges facing mankind. At present, the photocatalytic technology of semiconductor materials provides an effective way to control environmental pollution and efficiently utilize solar energy. Among them, the most representative TiO 2 Photocatalysts have the advantages of non-toxicity, good stability, low cost, and high catalytic activity, and have been widely used in the field of catalysis. However, TiO 2 It is a semiconductor material with a wide band gap, which can only be excited by ultraviolet light accounting for 3%-4% of the total sunlight, and has low utilization rate of sunlight and low photocatalytic efficiency, which seriously restricts the development of TiO2. 2 Further development...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/08B01J37/08B01J37/02B01J35/10A62D3/17A62D101/26A62D101/28
CPCA62D3/17A62D2101/26A62D2101/28B01J21/08B01J23/002B01J35/004B01J35/10B01J37/0018B01J37/0201B01J2523/00B01J2523/305B01J2523/41B01J2523/48
Inventor 刘长青张露月李想伍媛婷王秀峰
Owner SHAANXI UNIV OF SCI & TECH
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