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Method for synthesizing lamella g-C3N4 and TiO2 nanorod composite material through assistance of ultrasonic wave

An ultrasonic-assisted, composite material technology, applied in chemical instruments and methods, hydrogen production, catalysts for physical/chemical processes, etc., can solve problems such as difficult peeling, and achieve the effects of cheap raw materials, high efficiency, and catalytic performance promotion.

Active Publication Date: 2015-12-30
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is in order to solve existing preparation g-C 3 N 4 Difficult to peel off the problem, and provide an ultrasonic-assisted synthesis of sheet g-C 3 N 4 with TiO 2 Nanorod Composites Approach

Method used

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  • Method for synthesizing lamella g-C3N4 and TiO2 nanorod composite material through assistance of ultrasonic wave
  • Method for synthesizing lamella g-C3N4 and TiO2 nanorod composite material through assistance of ultrasonic wave
  • Method for synthesizing lamella g-C3N4 and TiO2 nanorod composite material through assistance of ultrasonic wave

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specific Embodiment approach 1

[0019] Specific embodiment one: This embodiment uses an ultrasonic-assisted method to synthesize sheet g-C 3 N 4 With TiO 2 The method of nanorod composite materials is specifically operated as follows:

[0020] 1. Add alcohol solvent and tetrabutyl titanate dropwise to the mixed solution of oleylamine oleate under stirring conditions to obtain a yellow solution, and continue stirring for 30 minutes; where the volume ratio of tetrabutyl titanate to solvent is 1:( 15-25), the volume ratio of oleic acid and oleylamine is 1:(1~2.4);

[0021] 2. Transfer the yellow solution obtained in step 1 to a high-pressure hydrothermal kettle, place it in a blast drying oven, and set the heating temperature to 140-180°C for 16-24 hours;

[0022] 3. Centrifugally wash the product after the reaction in step 2, and then ultrasonically disperse the centrifugal product in absolute ethanol, and repeat the washing for 3 to 5 times; the conditions for centrifugal washing are: the centrifuge rotation speed i...

specific Embodiment approach 2

[0028] Specific embodiment two: this embodiment is different from specific embodiment one in that: the characteristic in step one is that the alcohol solvent is one or more of methanol, ethanol, ethylene glycol, isopropanol and mixed in any ratio The mixed solution. Others are the same as the first embodiment.

specific Embodiment approach 3

[0029] Specific embodiment three: This embodiment is different from specific embodiment one or two in that the volume ratio of tetrabutyl titanate to alcohol solvent in step one is 1: (15-25). Others are the same as the first or second embodiment.

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Abstract

The invention discloses a method for synthesizing lamella g-C3N4 and TiO2 nanorod composite material through assistance of ultrasonic wave, relates to a preparation method of the g-C3N4 and TiO2 nanorod composite material for hydrogen generation through photolysis of water, and aims to solve the problem about difficulty in stripping the existing g-C3N4 with the graphene sheet like structure. The method comprises the following steps: I, preparing a TiO2 nanorod; II preparing g-C3N4 with the sheet structure; III, synthesizing the lamella g-C3N4 and TiO2 nanorod composite material through assistance of ultrasonic wave; IV, freeze-drying to obtain the required stripped g-C3N4 and TiO2 nanorod composite material. Compared with the prior art, the method is simple to operate, low in cost, and easy to realize commercialization; the prepared lamella g-C3N4 and TiO2 nanorod composite material is increased in surface reaction active sites and remarkably enlarged in specific surface area, and has excellent property for hydrogen generation through photolysis of water under simulated sunlight.

Description

Technical field [0001] The invention relates to a method for synthesizing sheet g-C with an ultrasonic assisted method 3 N 4 With TiO 2 Nanorod composite method. Background technique [0002] In recent years, with the rapid development of industrial production, the increasing energy demand, the gradual exhaustion of fossil energy, and the environmental problems that may be caused by the use of nuclear energy, have promoted the research boom in the development of new green energy. Hydrogen energy is a kind of high-efficiency and clean energy with great potential and is favored by people. Hydrogen production by photolysis of water uses water resources as a source of hydrogen to quickly and conveniently convert sustainable solar energy into hydrogen energy. It is expected to solve the two major problems of energy and the environment. problem. Professor Wang Xinchen of Fuzhou University and others prepared g-C through pyrolysis of cyanamide for the first time 3 N 4 , And use trietha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C01B3/04
CPCY02E60/36
Inventor 付宏刚江勇蒋保江郭世恩郝荣
Owner HEILONGJIANG UNIV
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