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Method of preparing zinc oxide-reduced graphene oxide composite material

A composite material and zinc oxide technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, separation methods, etc., can solve problems such as high energy consumption, high temperature, and long time

Active Publication Date: 2019-06-25
ZHENRUN ENVIRONMENTAL SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation process is time-consuming and requires high temperatures and thus high energy consumption

Method used

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  • Method of preparing zinc oxide-reduced graphene oxide composite material

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preparation example Construction

[0034] The preparation of graphene oxide is known to those skilled in the art. For example, graphene oxide can be produced by isolating (exfoliating) graphite oxide. Graphite oxide and graphene oxide are negatively charged due to the oxygen functional groups present therein, so graphite oxide can be separated into graphene oxide in a polar solvent. This can be facilitated, for example, by using ultrasound. Graphite oxide is hydrophilic. Exfoliated graphene oxide forms an excellently dispersed aqueous suspension.

[0035] The preparation of graphite oxides is likewise known to those skilled in the art; graphite oxides are usually prepared by oxidation of graphite. This oxidation introduces oxygen atoms into the graphite; in particular alcohol, epoxy, carbonyl and carboxyl groups are formed. These groups increase the distance between the layers, which can be more easily separated from each other. In addition, the oxidized graphite layer becomes more hydrophilic and has bett...

Embodiment 1

[0089] 4mg of the obtained graphite oxide was uniformly dispersed in 10mL of acetone, and then 40mg of photoinitiator bis-2,6-difluoro-3-pyrrolephenyl titanocene, 80mg of zinc sulfide as zinc source and 2mL of ammonia as a weak base were added and The obtained mixture was dispersed uniformly by ultrasonic (power 20W) to obtain a dispersion.

[0090] Transfer the dispersion to a transparent test tube, place it in a dark environment at a distance of 10 cm from the ultraviolet light source, and irradiate for about 10 minutes (the energy density of the irradiation is 100 mW / cm 2 , where the energy density was measured using an exposure meter from the Photoelectric Instrument Factory of Beijing Normal University), and the dispersion gradually precipitated. The precipitate-containing dispersion was centrifuged, washed three times with ethanol and dried in a vacuum oven at 65 °C for 5 hours to obtain the final composite. The photodegradation efficiency of the obtained zinc oxide-red...

Embodiment 2

[0092] Repeat Example 1, but change the graphite oxide dispersion solvent into ethanol; change the photoinitiator into benzil; change the zinc source into 460mg zinc phosphate; change the weak base into triethylamine. The photodegradation efficiencies of the obtained composites are shown in Table 1.

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Abstract

The present invention provides a method of preparing a zinc oxide-reduced graphene oxide composite material. The method comprises: 1) providing a mixture containing graphene oxide, at least a zinc source, at least a weak base and at least a photoinitiator; and 2) irradiating the mixture obtained in the step 1) with ultraviolet light to obtain a zinc oxide-reduced graphene oxide composite material.The invention further relates to a zinc oxide-reduced graphene oxide composite material obtained by the method, and uses in degradation of organic pollutants, purification of air, treatment of industrial waste gases and degradation of plastics.

Description

technical field [0001] The invention relates to a method for preparing a zinc oxide-reduced graphene oxide composite material. The invention also relates to the composite material of zinc oxide-reduced graphene oxide and its application in degrading organic pollutants, purifying air, treating industrial waste gas and degrading plastics. Background technique [0002] Photodegradation of organic pollutants is an attractive technology in the field of environmental protection. Photodegradation does not require the use of toxic and harmful chemicals, only photocatalytic materials and light sources are required. [0003] Qin et al. (Applied Surface Science 392(2017) 196-203) reported a ZnO microsphere-reduced graphene oxide nanocomposite and its application in the photocatalytic degradation of methylene blue dye. The nanocomposite material is prepared as follows: in a graphene oxide solution containing ammonium bicarbonate, a zinc acetate solution is added over 2 hours, then the...

Claims

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Application Information

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IPC IPC(8): B01J23/06B01J35/02C02F1/30C02F1/32B01D53/86B01D53/72A62D3/17A62D3/176C02F101/38
Inventor 邹应全薛兵
Owner ZHENRUN ENVIRONMENTAL SCI & TECH CO LTD
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