Low-energy consumption chemical field-driven organic pollutant degradation catalyst and application thereof

A technology with organic pollutants and low energy consumption, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Low efficiency, single selectivity of target treatment pollutants, etc.

Active Publication Date: 2019-01-22
安吉国千环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at a series of technical problems such as high energy consumption, high cost, expensive additives, harsh environment, single selectivity of target pollu

Method used

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  • Low-energy consumption chemical field-driven organic pollutant degradation catalyst and application thereof
  • Low-energy consumption chemical field-driven organic pollutant degradation catalyst and application thereof
  • Low-energy consumption chemical field-driven organic pollutant degradation catalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0088] The preparation method of component A includes the following steps:

[0089] 1) Transition precious metal-based nanoparticles are prepared by deposition-precipitation method, photoreduction method or chemical synthesis method;

[0090] 2) Preparation of carrier oxide;

[0091] 3) Prepare transition precious metal-based nanoparticles and carrier oxide into solutions separately, and ultrasonically disperse them; add the solution of transition precious metal-based nanoparticles to the solution of carrier oxide under stirring conditions, centrifuge and vacuum dry, and obtain solid powder In oxygen, air, nitrogen or H with a volume ratio of 5:95 2 It is calcined under Ar atmosphere (100-600℃) to obtain component A.

[0092] Application of the above catalyst in the degradation of organic pollutants: the organic pollutants and component B are prepared as a mixed solution; the concentration of organic pollutants is 1*10-5-0.1 mol / L; the concentration of component B is 0.1-1mol / L; The...

Example Embodiment

[0094] Example 1

[0095] In this embodiment, the preparation of Pd with a particle size of 5 nm by chemical reduction is taken as an example. Weigh 150 mg of palladium diacetylacetonate into a 100 mL round-bottom flask, measure 30 mL of oleylamine with a graduated cylinder, and stir in an oil bath at 60°C until the solution is clear; add 260 mg of borane-tert-butylamino complex ( BTBC) was dissolved in 2 mL of oleyl amine, and then added dropwise to the flask, the temperature was raised to 90 ℃ for 1 h; after the solution was cooled to room temperature, 50 mL of absolute ethanol was added, centrifuged and washed with absolute ethanol 2-3 Dry it for later use.

[0096] TiO 2 Preparation of nanotubes: 0.6 g TiO 2 The powder and 60 mL of NaOH (10 mol / L) solution were dispersed by ultrasonic for 30 min, and stirred for 1 h in the dark, and mixed well, then transferred to a stainless steel hydrothermal reactor with PTFE lining (100 mL) and sealed. Placed in a blast drying box, heated...

Example Embodiment

[0100] Example 2

[0101] In this embodiment, the preparation of Pd nanoparticles by the photoreduction method is taken as an example. Prepare PdCl 2 Water solution, weigh out 1 g of TiO 2 Nanoparticles (25 nm) were added to 10 mL of deionized aqueous solution, dispersed ultrasonically for 10 min, and PdCl was added dropwise during stirring 2 After the addition of the solution, stir for 30 min, irradiate the solution under a 300 W mercury lamp for 1 h, take out the centrifugal water, wash 2-3 times, and dry. By changing the precursor PdCl 2 To adjust the amount of Pd in ​​TiO 2 The loading amount on the surface, ranging from 0.1wt% to 5wt%.

[0102] For the and part of this embodiment, please refer to Embodiment 1.

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Abstract

The invention relates to the field of environmental protection, and discloses a low-energy chemical field-driven organic pollutant degradation catalyst and an application thereof. The catalyst can efficiently degrade azo dyes, nitro compounds and various other organic pollutants without providing additional energy. The catalysis system uses formate as an assistant, metallic palladium, silver, gold, platinum and iridium are used as catalytic active main bodies and are supported on the surface of a carrier oxide, C-H bonds in formate radicals are broken when the formate ions in a mixed solutionof the formate and organic pollutants are in contact with a transitional noble metal interface in order to form reactive oxygen species, the reactive oxygen species include hydroxyl radicals, hydrogenperoxide radicals, carbonate radicals and the like, and the generated free radicals rapidly oxidize adsorbed organic matters into small-molecular substances which can be naturally degraded, or even nontoxic water, CO2 or carbonates. The catalyst has the advantages of extremely high efficiency in organic pollutant degradation treatment, low cost, stable catalysis system and high recycling rate.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a catalyst for degrading organic pollutants driven by a low-energy chemical field and an application thereof. Background technique [0002] The environment is the basic prerequisite for human survival and development. With the rapid development of economy and continuous progress of society, the ecological environment on which human beings rely is increasingly polluted and destroyed. Protect the environment, reduce environmental pollution, and develop low-energy and efficient environmental governance technology. Water pollution is one of the three pollutions, among which organic pollution (printing and dyeing wastewater, pesticides, antibiotics, detergents, etc.) is of great significance to explore and develop low-cost and efficient methods for degrading organic pollutants in water due to its large content and high concentration . [0003] At present, there are mainly t...

Claims

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Application Information

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IPC IPC(8): B01J23/44B01J23/52B01J31/38C02F1/30C02F101/30
CPCB01J23/44B01J23/52B01J31/38B01J35/1019B01J35/1042B01J35/1061C02F1/30C02F2101/30C02F2101/308C02F2305/10
Inventor 祝晓辉李仁宏闫晓庆梁世潘陈佳荧
Owner 安吉国千环境科技有限公司
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