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A method for studying the relationship between catalytic activity and temperature gradient of graphitic carbon nitride

A graphite phase carbon nitride and temperature gradient technology, applied in the field of catalysis, can solve the problems of few active sites, high recombination rate of photogenerated electrons and holes, and small specific surface area, and achieve environmental friendliness, easy realization, and simple operation Effect

Active Publication Date: 2021-07-27
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

However, g-C obtained by direct thermal polymerization of melamine 3 N 4 Due to the disadvantages of small specific surface area, few active sites, and high recombination rate of photogenerated electrons and holes, g-C 3 N 4 Problems such as low photocatalytic activity, especially in practical applications, are extremely important for the application of high-activity surfaces, which play a decisive role in catalytic performance

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  • A method for studying the relationship between catalytic activity and temperature gradient of graphitic carbon nitride
  • A method for studying the relationship between catalytic activity and temperature gradient of graphitic carbon nitride
  • A method for studying the relationship between catalytic activity and temperature gradient of graphitic carbon nitride

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0032] Generally, the constant temperature reaction temperature for preparing graphite phase carbon nitride by using melamine powder is 400-700°C, and the constant temperature reaction time is at least 30min. After research, different constant temperature reaction temperatures have little influence on the experimental conclusions of the present invention. An experiment at a reaction temperature of 550°C will be described. An obvious directional heat source means that heating devices such as heating wires and heating resistors are distributed in one direction in the heating equipment. For example, in a common muffle furnace, the heating wire can be distributed on one side or on a straight line on both sides. , so that the temperature gradient in the heating device has a single direction, so th...

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Abstract

The invention discloses a method for researching the relationship between catalytic activity and temperature gradient of graphite-phase carbon nitride, which belongs to the technical field of catalysis. By controlling the temperature gradient, on the one hand, the distribution of the catalytic active surface of graphite carbon nitride in the direction is studied, and on the other hand, the catalytic activity performance at different heating rates is studied. When using graphite carbon nitride as a catalyst The preparation process and usage method of the photocatalytic technology have guiding significance, and provide a certain theoretical basis and experimental basis for the improvement of the catalytic performance of the photocatalytic technology in practical applications. At the same time, the method is simple to operate, easy to realize, and friendly to the environment.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and in particular relates to a research method for the relationship between catalytic activity and temperature gradient of graphite-phase carbon nitride. Background technique [0002] Energy shortage and environmental pollution have always been two prominent problems that plague human development and progress. Photocatalytic technology uses the inexhaustible sunlight as energy source, and has received extensive attention in the fields of photolysis of water to produce hydrogen and pollutant degradation. Using photocatalytic technology to convert solar energy into clean and green hydrogen energy for storage has important research value and good application prospects. Graphite carbon nitride (g-C 3 N 4 ) as a metal-free photocatalyst has attracted attention due to its suitable bandgap width (2.7eV), which enables it to undergo photolysis of water to produce hydrogen under visible light irradia...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N31/10G01N1/44
Inventor 马永宁王雨费贵强王海花张文静马晓彤郭丽媛
Owner SHAANXI UNIV OF SCI & TECH
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