A non-metallic material for efficient visible light-driven catalytic water splitting

A non-metallic material, catalytic decomposition technology, applied in the field of material preparation and application, can solve the problems of high cost, inefficiency, environmental pollution, etc., and achieve the effects of resistance to mechanical wear, low cost, and low environmental pollution

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

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Problems solved by technology

[0003] The purpose of the present invention is to provide graphite phase boron carbon nitrogen as an efficient inorganic non-metallic photocatalytic material to catalytically decompose water under the drive of visible light, so as to solve the inefficiency, high cost and environmental pollution of metal compound materials currently used for photocatalytic water decomposition. question

Method used

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  • A non-metallic material for efficient visible light-driven catalytic water splitting
  • A non-metallic material for efficient visible light-driven catalytic water splitting
  • A non-metallic material for efficient visible light-driven catalytic water splitting

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preparation example Construction

[0018] The preparation steps of the present invention are as follows:

[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. Raise the temperature at 5-10 ℃ / min to 1250 ℃ 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 photo-splitting water reactor to test the performance of photo-splitting water to produce hydrogen and oxygen.

Embodiment 1

[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 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 photo-splitting water reactor to test the performance of photo-splitting water to produce hydrogen and oxygen.

Embodiment 2

[0023] 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 speed of 10°C / min and kept for 8 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 photo-splitting water reactor to test the performance of photo-splitting water to produce hydrogen and oxygen.

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Abstract

The invention discloses a non-metallic material for driving the photocatalytic decomposition of water by using efficient visible light, which belongs the field of material preparation and application. A graphite phase boron-carbon-nitride as a photocatalytic water splitting catalyst is a stable inorganic non-metallic photocatalyst, and through the efficient utilization of solar energy and the photocatalytic decomposition of water so as to produce hydrogen and oxygen, a situation that current conventional photocatalytic water splitting catalytic materials mainly include (precious) metal oxides or (sulfides) is expanded, and a defect that a metal-containing catalytic material is high in cost, unstable in chemical or physical properties, and not friendly to the environment is avoided. The graphite phase boron-carbon-nitride as an inorganic nonmetal has the characteristics of chemical corrosion resistance, high temperature resistance, good thermal conductance, high visible light response and the like, so that the graphite phase boron-carbon-nitride has a better application prospect in the field of photocatalysis. The non-metallic material disclosed by the invention is simple in method, cheap and easily-obtained in raw materials, low in environmental pollution, and conducive to the large-scale industrial production, and has remarkable economic and social benefits.

Description

technical field [0001] The invention belongs to the field of material preparation and application, and specifically relates to graphite phase boron carbon nitrogen as an efficient inorganic non-metallic photocatalytic material that decomposes water to produce hydrogen and oxygen under the drive of visible light. Background technique [0002] The energy issue is one of the main issues related to the national economy and people's livelihood in today's international society. Around the research and development of new energy, governments and scientists of various countries are exploring from different fields. Since Fujishima and Honda discovered TiO in 1972 2 Since the production of hydrogen by photocatalytic water splitting, the way to obtain the cleanest energy—hydrogen by solar-driven water splitting has attracted great attention from scientists all over the world. At present, the discovered photo-water splitting materials mainly focus on modifying TiO 2 And other metal ox...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24C01B3/04
CPCY02E60/364Y02E60/36Y02P20/133
Inventor 黄彩进陈成叶欣欣叶伟青刘秋文
Owner FUZHOU UNIV
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