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Preparation method and application of ZnMnO3 nano particles

A nanoparticle and filtrate technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problem of high cost of nanoparticles, and achieve the effects of low price, abundant raw material sources, and pollution reduction.

Inactive Publication Date: 2019-06-04
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] One of the objectives of the present invention is to solve the problem of high cost of preparing nanoparticles, and to propose a method for preparing ZnMnO 3 nanomaterials approach

Method used

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  • Preparation method and application of ZnMnO3 nano particles
  • Preparation method and application of ZnMnO3 nano particles
  • Preparation method and application of ZnMnO3 nano particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] ZnMnO 3 The preparation of nanomaterials comprises the steps of:

[0029] 1. Disassemble the discarded alkaline zinc-manganese battery, and disassemble the zinc shell and manganese powder.

[0030] Manganese powder pretreatment: Put the manganese powder into a grinding bowl for full grinding, then put the powder into a muffle furnace, bake at 400°C for 2 hours, cool to room temperature, and set aside.

[0031] Zinc shell pretreatment: clean the zinc shell with an ultrasonic cleaner for 3 to 4 minutes, and set aside.

[0032] 2. Add 3.38g of pretreated manganese powder into 150mL of 0.5mol / L sulfuric acid solution, stir well, filter to get the filtrate, and rinse with water for 3 times. Add 0.5mol / L ammonia water to the obtained filtrate to adjust the pH to 7-8, filter again to take the filtrate, add 20mL of 40°C sodium hydroxide solution (2.5mol / L) to the obtained filtrate, filter again, and collect the black solid filter residue .

[0033] 3. Put 4.0 g of pretreate...

Embodiment 2

[0035] Example 2 ZnMnO 3 Nanomaterials Photocatalytic Degradation of Organic Pollutants

[0036] ZnMnO 3 The formula for calculating the degradation rate of nanomaterials for photodegradation of hydroquinone is as follows:

[0037] η=(S 0 -S) / S 0 *100%

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Abstract

The invention discloses a preparation method and application of ZnMnO3 nano particles, and belongs to the field of nano particle preparation and photocatalytic degradation. The ZnMnO3 nanoparticles are synthesized from waste alkaline zinc-manganese dry batteries as a raw material. The waste alkaline zinc-manganese dry batteries are firstly separated, zinc shells and manganese powder are retained,the zinc shells and the manganese powder are mixed, reacted, filtered and dried by precipitation method to obtain a ZnMnO3 nanomaterial. When the ZnMnO3 nanomaterial degrades hydroquinone, the optimumpH is 7, the optimum dosage is 8mg, and the best xenon lamp irradiation intensity is 500W. Under the optimal conditions, the degradation efficiency of the hydroquinone reaches 85.7%. The ZnMnO3 nano-material prepared by the invention has stable performance, good catalytic activity and low price, and reduces the environmental hazard of the waste zinc-manganese dry batteries.

Description

technical field [0001] The invention relates to the technical field of synthesis and photocatalytic degradation of nanomaterials, in particular to a ZnMnO 3 Nanomaterial preparation method and its application in photocatalytic degradation of hydroquinone. Background technique [0002] In recent years, under the conditions of reducing energy consumption, not producing other pollutants and simple operation methods, people have explored and found through experiments that light can be used to degrade some pollutants. This method can not only reduce the concentration of pollutants in wastewater, but also avoid secondary pollution caused by other harmful substances in the degradation process. It is an ideal method for degrading environmental organic pollutants. At the same time, the highly efficient and energy-saving nanomaterial catalytic technology also plays a beneficial role in the field of photodegradation. This pollutant degradation method plays an important role in ecolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/12B01J23/34C02F1/30B82Y30/00C02F101/34
Inventor 包红旭徐晓红李良玉吕志忠刘敏刘斌宋泽斌
Owner LIAONING UNIVERSITY