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Method for preparing carbon dioxide reduction photocatalyst by utilizing hyperaccumulators

A technology for hyper-accumulation of plants and carbon dioxide is applied in the field of preparing carbon dioxide reduction photocatalysts, which can solve the problems of inability to use photocatalytic reduction reaction and complex process, and achieve the effects of improved performance, simple preparation process and effective reduction.

Active Publication Date: 2020-05-08
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Xing Ruizhi (2019) disclosed a CdS@C photocatalyst based on cadmium hyperaccumulator plants (Xing Ruizhi. Preparation of CdS@C photocatalyst based on cadmium hyperaccumulator plants and its dye degradation performance research [D]. Fujian Agriculture and Forestry University, 2019.), the preparation process of its CdS@C photocatalyst is complex, and it only has certain uses for photocatalytic degradation of dyes and actual printing and dyeing wastewater treatment, and cannot be used for CO 2 photocatalytic reduction reaction

Method used

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  • Method for preparing carbon dioxide reduction photocatalyst by utilizing hyperaccumulators
  • Method for preparing carbon dioxide reduction photocatalyst by utilizing hyperaccumulators
  • Method for preparing carbon dioxide reduction photocatalyst by utilizing hyperaccumulators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1 Preparation of Hydrothermal Carbon / Rare Earth Composite Materials Using Osmanthus osmanthus

[0045] The hydrothermal carbon / copper composite photocatalyst was prepared by utilizing the copper-enriched biomass of Osmanthus fragrans. Weighed 3 g of Osmanthus frondosa, which had been crushed and desanded, into 20 mL of distilled water, and stirred it magnetically for 5 minutes at room temperature, and then added In a stainless steel hydrothermal reaction kettle lined with tetrafluoroethylene, the reaction temperature is 180°C, and the heat preservation is 16h, and the obtained black product is obtained; the obtained product is centrifuged at 2000rpm for 30min, and washed several times alternately with distilled water and methanol; finally, the sample is placed in the Dry in a vacuum oven at 80°C for 24 hours, and take it out to obtain a hydrothermal carbon / rare earth composite material.

[0046] Pictures of mangosteen figure 1 As shown, the photo of the hydrother...

Embodiment 2

[0047] Example 2 Preparation of Hydrothermal Carbon / Copper Composite Material by Using Herba Cinnamomi

[0048] The hydrothermal carbon / copper composite photocatalyst was prepared by using Cystia haizhou, a copper-enriched biomass. Weigh 200g of the crushed and desand-removed Herba Cinnamon in 2000mL of distilled water, stir it magnetically for 10 minutes at room temperature, and then add it to a polytetrafluoroethylene-lined stainless steel hydrothermal reaction kettle with a reaction temperature of 250°C. Insulate for 10 hours to obtain a black product; centrifuge the obtained product at 5000rpm for 20 minutes, alternately wash several times with distilled water and methanol; finally dry the sample in a vacuum oven at 90°C for 12 hours, and take it out to obtain a hydrothermal carbon / copper composite material .

Embodiment 3

[0049] Example 3 Preparation of Hydrothermal Carbon / Nickel Composite Materials Using Phyllophyllum Beads

[0050] Preparation of hydrothermal carbon / nickel composite photocatalysts from Phyllophyllum biomass. Weigh 0.2g of the crushed and desand-removed Herba Cinnamon in 10mL of distilled water, stir it magnetically for 5 minutes at room temperature, and then add it to a polytetrafluoroethylene-lined stainless steel hydrothermal reaction kettle with a reaction temperature of 120°C , heat preservation for 50h, the obtained black product; the obtained product was centrifuged at 10000rpm for 10min, washed several times alternately with distilled water and methanol; finally, the sample was dried in a vacuum oven at 70°C for 36h, and the hydrothermal carbon / nickel composite was obtained after taking it out Material.

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Abstract

The invention provides a method for preparing a carbon dioxide reduction photocatalyst by utilizing hyperaccumulators. The method comprises the steps: firstly, carrying out crushing and sand removal treatment on the hyperaccumulators; adding distilled water into the hyperaccumulators, uniformly mixing, and carrying out hydrothermal reaction at the temperature of 120-250 DEG C for 2-50 h to obtaina reaction product; and finally, centrifuging, washing and drying the obtained reaction product to obtain the carbon dioxide reduction photocatalyst. The preparation method is simple; the prepared carbon dioxide reduction photocatalyst can realize the reduction of carbon dioxide, and high added value products such as carbon monoxide are obtained; in addition, the invention provides a new method for resource utilization of the hyperaccumulators, and the method has wide application prospects in the fields of treatment of the hyperaccumulators containing heavy metals, reduction of carbon dioxideand other energy and chemical engineering.

Description

technical field [0001] The invention belongs to the field of photocatalytic materials. More specifically, it relates to a method for preparing a carbon dioxide reduction photocatalyst using hyperaccumulator plants. Background technique [0002] Environmental pollution and energy shortage are extremely serious problems facing the development of human society today. With the gradual increase in energy demand in modern society, fossil energy is slowly being exhausted at an increasing rate year by year. At the same time, the combustion of fossil energy is accompanied by a large amount of CO 2 The release of carbon dioxide has brought serious greenhouse effects to the world, and the carbon balance in nature is already facing severe challenges. At present, the world emits about 2 billion tons of carbon dioxide every year, and the concentration of carbon dioxide in the atmosphere has increased from 280ppm at the end of the 19th century to the current 415ppm. Therefore, based on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J23/755B01J23/75B01J23/06C01B32/40
CPCB01J23/72B01J23/755B01J23/75B01J23/06C01B32/40B01J35/39
Inventor 胡卓锋何茜彭妤郑宁超
Owner SUN YAT SEN UNIV
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