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A metal-free photocatalytic material for efficient reduction of carbon dioxide

A photocatalytic material, non-metallic technology, applied to carbon monoxide, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of high cost and inefficiency, and achieve mechanical wear resistance, low cost and easy preservation. Effect

Inactive Publication Date: 2015-10-21
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is planned to effectively reduce carbon dioxide pollution through photocatalytic technology, and solve the problems of inefficiency, high cost and environmental pollution caused by metal compound materials currently used for photocatalytic reduction of carbon dioxide gas

Method used

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  • A metal-free photocatalytic material for efficient reduction of carbon dioxide
  • A metal-free photocatalytic material for efficient reduction of carbon dioxide
  • A metal-free photocatalytic material for efficient reduction of carbon dioxide

Examples

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Effect test

preparation example Construction

[0016] The preparation steps of the present invention are as follows:

[0017] After boron oxide, urea, and glucose are mixed and ground evenly according to the mass ratio of 1:2:0.3, the mixed sample is taken in a corundum magnetic boat, and then placed in a horizontal high-temperature tube furnace. Under an ammonia atmosphere, Raise the temperature to 1250°C at a rate of 5-10°C / min and keep it for 4-8 hours; take out the sample and wash it with 0.1mol / L dilute hydrochloric acid, centrifuge and dry to obtain graphite phase boron carbon nitrogen powder. Accurately weigh 50 mg of the prepared powder catalyst and place it in a photocatalytic reaction device for photocatalytic reduction of carbon dioxide performance test.

Embodiment 1

[0019] After boron oxide, urea, and glucose are mixed and ground evenly in a mass ratio of 1:2:0.3, the mixed sample is taken in a corundum magnetic boat, and then placed in a horizontal high-temperature tube furnace. Then, the temperature was raised to 1250°C at a speed of 5°C / min and kept for 4 hours; the sample was taken out and washed with 0.1mol / L dilute hydrochloric acid, centrifuged and dried to obtain graphite phase boron carbon nitrogen powder. Accurately weigh 50 mg of the prepared powder catalyst and place it in a photocatalytic reaction device for photocatalytic reduction of carbon dioxide performance test.

Embodiment 2

[0021] After boron oxide, urea, and glucose are mixed and ground evenly in a mass ratio of 1:2:0.3, the mixed sample is taken in a corundum magnetic boat, and then placed in a horizontal high-temperature tube furnace. The temperature was raised to 1250°C at a rate of 10°C / min and maintained for 6 hours; the sample was taken out and washed with 0.1mol / L dilute hydrochloric acid, centrifuged and dried to obtain graphite phase boron carbon nitrogen powder. Accurately weigh 50 mg of the prepared powder catalyst and place it in a photocatalytic reaction device for photocatalytic reduction of carbon dioxide performance test.

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Abstract

The invention discloses a non-metallic photocatalytic material for efficient reduction of carbon dioxide, and belongs to the fields of material preparation and application. The non-metallic photocatalytic material for efficient reduction of carbon dioxide is a stable photocatalyst, is applied to catalytic reduction of a carbon dioxide gas under drive of a visible light, and can be used for breaking through the limit that a catalytic material for photocatalytic reduction of carbon dioxide at present takes (noble) metal, oxide (or sulfide), as a main raw material, and solving the problems of high cost, instability, environmental pollution and the like of these catalytic materials. Graphite-phase boron carbon nitride is inorganic nonmetal, and has the characteristics of chemical resistance, heat resistance, good thermal conductance, visible-light response and the like, so that the non-metallic photocatalytic material can have good application prospect in the field of photocatalysis. The non-metallic photocatalytic material is simple in preparation method, low in environmental pollution, and applicable to large-scale industrial production, and has significant economic and social benefits, and the raw materials are readily available.

Description

technical field [0001] The invention belongs to the field of material preparation and application, and in particular relates to a non-metallic photocatalytic material for efficiently reducing carbon dioxide gas. Background technique [0002] At present, the greenhouse effect caused by carbon dioxide has attracted more and more attention from people all over the world, and scientists are looking for effective methods to solve or alleviate this problem in various fields. Among them, photocatalytic carbon dioxide reduction is an effective technology considered to be green and environmentally friendly, and its products are reusable industrial raw materials. The catalytic materials for photocatalytic carbon dioxide reduction are mainly concentrated on metal compounds (oxides, sulfides, etc.) semiconductors, but most of these metal compounds have some problems such as low efficiency, non-response to visible light, and chemical instability. Moreover, the cost of the metal compound...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01D53/86B01D53/62C01B31/18C01B32/40
CPCY02A50/20
Inventor 黄彩进陈成叶欣欣叶伟青刘秋文
Owner FUZHOU UNIV
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