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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 pollutants, and low efficiency, the present invention provides a reaction Mild conditions, low energy consumption, clean and efficient organic pollutant treatment catalyst

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
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Effect test

preparation example Construction

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

[0089] 1) Preparation of transition noble metal-based nanoparticles by deposition-precipitation, photoreduction or chemical synthesis;

[0090] 2) Preparation of carrier oxides;

[0091] 3) The transition noble metal-based nanoparticles and the carrier oxide were prepared as a solution, and ultrasonically dispersed; the solution of the transition noble metal-based nanoparticles was added to the solution of the carrier oxide under stirring conditions, centrifuged and vacuum-dried, and the resulting solid powder In oxygen, air, nitrogen or H at a volume ratio of 5:95 2 / Ar atmosphere calcined (100-600 ℃), that is A component.

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

Embodiment 1

[0095] In this example, the chemical reduction method is used as an example to prepare Pd with a particle size of 5 nm. Weigh 150 mg of palladium diacetylacetonate into a 100 mL round-bottomed 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-butylamine complex ( BTBC) was dissolved in 2 mL of oleylamine, then added dropwise to the flask, and the temperature was raised to 90°C for 1 h; after the solution was cooled to room temperature, 50 mL of absolute ethanol was added, centrifuged and washed with absolute ethanol for 2-3 Dry it for later use.

[0096] TiO 2 Preparation of nanotubes: 0.6 g TiO 2 The powder and 60 mL NaOH (10 mol / L) solution were dispersed by ultrasonic wave for 30 min, and stirred in the dark for 1 h to mix well, then transferred to a stainless steel hydrothermal reaction kettle with a polytetrafluoroethylene liner (100 mL), sealed, Place in a blast drying o...

Embodiment 2

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

[0102] Other parts of this embodiment can 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
CPCC02F1/30B01J23/44B01J23/52B01J31/38C02F2101/30C02F2101/308C02F2305/10B01J35/615B01J35/635B01J35/647
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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