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A high-performance photocatalytic nitrogen fixation g-c that can be produced industrially 3 no 4 /Oxide composite material preparation method

A composite material, g-c3n4 technology, applied in the field of photocatalytic materials and its preparation, can solve the problems of lack of scalability, low specific surface area, high production route cost, etc., achieve excellent photocatalytic nitrogen fixation performance, low preparation cost, The effect of high nitrogen fixation efficiency

Active Publication Date: 2020-08-21
RENMIN UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

g-C obtained by these methods 3 N 4 / metal oxides usually have a low specific surface area, traditional g-C 3 N 4 / Metal oxide production routes are costly and not scalable

Method used

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  • A high-performance photocatalytic nitrogen fixation g-c that can be produced industrially <sub>3</sub> no <sub>4</sub> /Oxide composite material preparation method
  • A high-performance photocatalytic nitrogen fixation g-c that can be produced industrially <sub>3</sub> no <sub>4</sub> /Oxide composite material preparation method
  • A high-performance photocatalytic nitrogen fixation g-c that can be produced industrially <sub>3</sub> no <sub>4</sub> /Oxide composite material preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The melamine of 0.01mol ferric chloride, 0.12mol urea and 0.7985g is formed deep eutectic solvent in 95 ℃ of oil baths, then the deep deep eutectic solvent that forms is roasted in muffle furnace, and roasting condition is 5℃·min -1 The heating rate was raised to 550°C, and after 4 hours of heat preservation, it was cooled with the furnace to obtain the finished product.

Embodiment 2

[0033] The melamine of 0.01mol vanadium trichloride, 0.12mol urea and 1.0913g is formed deep deep eutectic solvent in 95 ℃ of oil baths, then the deep deep eutectic solvent that forms is roasted in muffle furnace, and roasting condition is 5℃·min -1 The heating rate was raised to 550°C, and after 4 hours of heat preservation, it was cooled with the furnace to obtain the finished product.

Embodiment 3

[0035] The melamine of 0.01mol indium chloride, 0.12mol urea and 1.1105g is formed deep deep eutectic solvent in 95 ℃ of oil baths, then the deep deep eutectic solvent that forms is roasted in muffle furnace, and roasting condition is with 5 ℃·min -1 The heating rate was raised to 550°C, and after 4 hours of heat preservation, it was cooled with the furnace to obtain the finished product.

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Abstract

The invention discloses a high-performance photocatalytic nitrogen-fixing g-C that can be industrially produced 3 N 4 / oxide composite material preparation method, firstly, 0.01 mol metal chloride, 0.12 mol urea and a certain mass of melamine are formed in a 60-130°C oil bath to form a deep eutectic solvent, and then the formed deep eutectic solvent is Roasted in a muffle furnace to obtain the finished product. The preparation method of the present invention is simple to operate, has low preparation cost, and can be produced on a large scale. The obtained g-C 3 N 4 / The thickness of the oxide nanosheets is controllable and has a good crystal form; Fe 2 O 3 The compound can be combined with g‑C 3 N 4 Nanomaterials form a Z mechanism to improve the lifetime of photogenerated electrons in the material. In addition, narrow-band oxides can broaden g‑C 3 N 4 In the absorption range of the visible light region, improve photocatalytic activity; load g-C of different oxide types 3 N 4 / Oxide has excellent photocatalytic nitrogen fixation performance under full light.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials and their preparation, and in particular relates to an industrially produced high-performance photocatalytic nitrogen fixation g-C 3 N 4 / Oxide composite material preparation method. Background technique [0002] Ammonia is widely used in the preparation of chemical fertilizers, medicines and synthetic fibers. Currently NH 3 The main industrial synthesis method for production is the Haber-Bosch method, which requires high temperature (500-600° C.) and high pressure (20-50 MPa) to separate N-N triple bonds with strong bond energy. The formation of ammonia from hydrogen and nitrogen is thermodynamically spontaneous but kinetically infeasible. Industrial production NH 3 High energy consumption is required, which accounts for more than 1% of the total global energy supply. Therefore, there is an urgent need for an energy-efficient N 2 fixed strategy. [0003] Currently, severa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/39
Inventor 牟天成牟红宇
Owner RENMIN UNIVERSITY OF CHINA
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