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Preparation method and application of self-cleaning gel with adsorption-photocatalysis synergistic effect

A synergistic, photocatalytic technology, used in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of not really eliminating pollutants, secondary pollution, consuming more energy and other resources, etc problem, to achieve the effect of significant adsorption-photocatalytic synergistic performance, efficient adsorption, and obvious self-cleaning performance

Pending Publication Date: 2022-07-12
HANGZHOU VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that simple dye wastewater adsorption and purification of pollutants can avoid the generation and residue of intermediate products and achieve the purpose of truly removing pollutants in dye wastewater, but it only realizes the removal of pollutants from wastewater, and does not really Eliminate pollutants, and the subsequent disposal of the adsorbent that adsorbs pollutants will still consume more energy and other resources, and it is also prone to secondary pollution problems

Method used

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  • Preparation method and application of self-cleaning gel with adsorption-photocatalysis synergistic effect
  • Preparation method and application of self-cleaning gel with adsorption-photocatalysis synergistic effect
  • Preparation method and application of self-cleaning gel with adsorption-photocatalysis synergistic effect

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Effect test

Embodiment 1

[0038] The preparation method of the self-cleaning gel with the synergistic effect of adsorption-photocatalysis in the present embodiment comprises the following steps:

[0039] S1. Preparation of photocatalytic materials modified by bismuth titanium halogen:

[0040] Add 0.33 g of bismuth nitrate pentahydrate to 60 mL of absolute ethanol, ultrasonically until dissolved, to obtain solution A; mix 15 mL of tetrabutyl titanate and 15 mL of absolute ethanol, and magnetically stir for 30 min to obtain solution B; dissolve 0.78 g of iodic acid In 15 mL of deionized water a, an aqueous solution of iodic acid was obtained; the aqueous solution of iodic acid was kept in a state of magnetic stirring, the solution B was added dropwise, and then magnetic stirring was performed for 30 min to obtain a uniformly dispersed milky white suspension; The solution A and the milky white suspension were mixed and stirred for 60 min to obtain a precursor colloidal substance; the dropwise addition sp...

Embodiment 2

[0064] The preparation method of the self-cleaning gel with the synergistic effect of adsorption-photocatalysis in the present embodiment comprises the following steps:

[0065] S1. Preparation of photocatalytic materials modified by bismuth titanium halogen:

[0066] Add 0.44 g of bismuth nitrate pentahydrate to 80 mL of absolute ethanol, and sonicate until dissolved to obtain solution A; mix 30 mL of tetrabutyl titanate and 30 mL of absolute ethanol, and magnetically stir for 30 min to obtain solution B; dissolve 0.78 g of iodic acid In 15 mL of deionized water a, an aqueous solution of iodic acid was obtained; the aqueous solution of iodic acid was kept in a state of magnetic stirring, the solution B was added dropwise, and then magnetic stirring was performed for 30 min to obtain a uniformly dispersed milky white suspension; The solution A and the milky white suspension were mixed and stirred for 60 min to obtain a precursor colloidal substance; the dropwise addition rate ...

Embodiment 3

[0080] The preparation method of the self-cleaning gel with the synergistic effect of adsorption-photocatalysis in the present embodiment comprises the following steps:

[0081] S1. Preparation of photocatalytic materials modified by bismuth titanium halogen:

[0082] Add 0.33 g of bismuth nitrate pentahydrate to 60 mL of absolute ethanol, and ultrasonicate until dissolved to obtain solution A; mix 15 mL of tetrabutyl titanate and 15 mL of absolute ethanol, and stir magnetically for 30 min to obtain solution B; dissolve 0.78 g of iodic acid In 15 mL of deionized water a, an aqueous solution of iodic acid was obtained; the aqueous solution of iodic acid was kept in a state of magnetic stirring, the solution B was added dropwise, and then magnetic stirring was performed for 30 min to obtain a uniformly dispersed milky white suspension; The solution A and the milky white suspension were mixed and stirred for 60 min to obtain a precursor colloidal substance; the dropwise addition ...

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Abstract

The invention provides a preparation method and an effect of self-cleaning gel with an adsorption-photocatalysis synergistic effect. The method comprises the following steps: mixing bismuth nitrate pentahydrate and absolute ethyl alcohol to form a solution A; mixing tetrabutyl titanate and absolute ethyl alcohol to obtain a solution B; when the prepared iodic acid aqueous solution is in a stirring state, adding the solution B to obtain a milk white turbid liquid, mixing the milk white turbid liquid and the solution A to obtain a precursor colloidal substance, and carrying out a hydrothermal synthesis reaction on the precursor colloidal substance to obtain an orange red precipitate; and drying the orange red precipitate, and cooling to obtain the titanium halogen modified photocatalytic material. The preparation method comprises the following steps: mixing a gelatin solution and a chitosan solution to obtain a viscous liquid, adding a titanium halogen modified photocatalytic material into the viscous liquid to obtain a suspension viscous liquid, sequentially adding dilute acetic acid and a dilute glutaraldehyde solution into the suspension viscous liquid, carrying out a water bath reaction, soaking, and carrying out vacuum drying to obtain the self-cleaning gel with an adsorption-photocatalysis synergistic effect. The prepared self-cleaning gel is used for treating dye wastewater.

Description

technical field [0001] The invention belongs to the technical field of new materials and environmental treatment, and in particular relates to a preparation method and application of a self-cleaning gel with adsorption-photocatalysis synergy. Background technique [0002] At present, the research on photocatalytic decolorization of dye wastewater at home and abroad mostly focuses on the relationship between decolorization rate and time. However, based on the principle of photocatalysis, in the process of photocatalytic decomposition of dye molecules, it generally requires step-by-step chemical bond cleavage and decomposition, which often produces various intermediate products with smaller molecules, many of which still belong to Therefore, even if the dye wastewater has a significant decolorization effect, it only means that the dye molecules are destroyed, and it does not represent the real reduction of the pollutants in the dye wastewater. It can be seen that due to the e...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J23/18B01J27/138B01J31/22B01J31/26B01J35/00B01J37/32C02F1/30C02F101/30
CPCB01J23/18B01J21/063B01J27/138B01J31/2239B01J37/32B01J31/26C02F1/30C02F2305/10C02F2101/308B01J35/23B01J35/39Y02W10/37
Inventor 谢磊林正迎要康哲池建杭
Owner HANGZHOU VOCATIONAL & TECHN COLLEGE
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