g-C3N4/Ni-HRP composite photocatalyst as well as preparation method and application thereof

A photocatalyst, g-c3n4 technology, applied in catalyst activation/preparation, organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, etc., can solve the problem of high degree of photogenerated electron-hole recombination, limited application, small specific surface area, etc., to achieve the effect of improving photocatalytic performance, facilitating mass production, and simple operation process

Active Publication Date: 2018-08-24
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But since pure g-C 3 N 4 It has the disadvantages of small specific surface area and high recombination degree of photogenerated electron-hole pairs, which limits its application in actual production.

Method used

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  • g-C3N4/Ni-HRP composite photocatalyst as well as preparation method and application thereof
  • g-C3N4/Ni-HRP composite photocatalyst as well as preparation method and application thereof
  • g-C3N4/Ni-HRP composite photocatalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: g-C 3 N 4 Preparation of Ni-HRP Composite System

[0030] (1) Preparation of ultrathin graphitic carbon nitride (g-C 3 N 4 )catalyst of light:

[0031] a. Weigh urea, dry it in an oven at a specific temperature for 24 h, grind it and put it into a crucible, cover it, and place it in a muffle furnace at 2.5 °C for min -1 The heating rate was increased from room temperature to 550 °C and calcined for 3.5 h.

[0032] b. Take out and use 1 mol L -1 Pickle with nitric acid overnight, filter with suction, wash with distilled water 5 times until neutral, and dry in a vacuum oven for 10 h.

[0033] c. Weigh a certain amount of g-C 3 N 4 placed in a porcelain boat, in a muffle furnace at 2.5 °C min -1 The heating rate is from room temperature to 500 °C, calcined for 3.5 h, and the ultrathin g-C 3 N 4 .

[0034] (2) Preparation of g-C 3 N 4 / Ni-HRP composite photocatalyst:

[0035] Accurately weigh 50mg ultra-thin g-C 3 N 4 Place in a beaker, add 10mL ...

Embodiment 2

[0041] Example 2: g-C 3 N 4 Preparation of Ni-HRP Composite System

[0042] (1) Preparation of ultrathin graphitic carbon nitride (g-C 3 N 4 )catalyst of light:

[0043] a. Weigh urea, dry it in an oven at a specific temperature for 10 h, grind it and put it into a crucible, cover it, and place it in a muffle furnace at 2 °C min -1 The heating rate was increased from room temperature to 500 °C and calcined for 3 h.

[0044] b. Take out and use 1 mol L -1 Pickle with nitric acid overnight, filter with suction, wash with distilled water 7 times until neutral, and dry in a vacuum oven for 24 hours.

[0045] c. Weigh a certain amount of g-C 3 N 4 placed in a porcelain boat, in a muffle furnace at 2 °C min -1 The heating rate is from room temperature to 550 °C, and calcined for 3 h, the ultrathin g-C 3 N 4 .

[0046] (2) Preparation of g-C 3 N 4 / Ni-HRP composite photocatalyst:

[0047] Accurately weigh 80mg ultra-thin g-C 3 N 4 Place in a beaker, add 15mL of disti...

Embodiment 3

[0049] Example 3: g-C 3 N 4 Preparation of Ni-HRP Composite System

[0050] (1) Preparation of ultrathin graphitic carbon nitride (g-C 3 N 4 )catalyst of light:

[0051] a. Weigh urea, dry it in an oven at a specific temperature for 20 h, grind it and put it into a crucible, cover it, and place it in a muffle furnace at 5 °C for min -1 The heating rate was increased from room temperature to 700 °C and calcined for 4 h.

[0052] b. Take out and use 1 mol L -1 Pickle with nitric acid overnight, filter with suction, wash with distilled water 7 times until neutral, and dry in a vacuum oven for 20 hours.

[0053] c. Weigh a certain amount of g-C 3 N 4 placed in a porcelain boat, in a muffle furnace at 5°C min -1 heating rate from room temperature to 600 °C, and calcined for 4 h, the ultrathin g-C 3 N 4 .

[0054] (2) Preparation of g-C 3 N 4 / Ni-HRP composite photocatalyst:

[0055] Accurately weigh 100mg ultra-thin g-C 3 N 4 Place in a beaker, add 20mL of distille...

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PUM

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Abstract

The invention relates to a g-C3N4 / Ni-HRP composite photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of nano material synthesis. The preparationmethod comprises the following steps: preparing g-C3N4 for later use; loading metal Ni and horse radish peroxidase (HPR) on the surface of a graphite-phase carbon nitrode (g-C3N4) through a simple and effective drop-wide adding and stirring way to form a g-C3N4 / Ni-HRP composite photocatalyst system which can realize effectively degrading various phenol pollutants under visible light. According tothe experimental results, the system has photocatalytic degradation efficiency of 100% for various phenol pollutants under the visible light, and has relatively high stability.

Description

technical field [0001] The present invention relates to a g-C 3 N 4 The invention relates to a Ni-HRP composite photocatalyst and its preparation method and application, belonging to the technical field of nanometer material synthesis. Background technique [0002] With the increasingly serious problem of global environmental pollution, how to effectively control pollution has become a difficult problem in current research. Solar energy is an inexhaustible clean and cheap energy source. Photocatalytic degradation of organic pollutants using solar energy is also one of the most promising environmental purification technologies. However, how to design and prepare high-performance photocatalytic materials is still a difficult problem in the development of photocatalytic technology. [0003] Most of the photocatalysts that have been explored to degrade phenolic pollutants are metal-metal oxide photocatalysts, magnetic metal oxide photocatalysts, biological enzymes and other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02B01J27/24B01J37/08C02F1/30C02F101/34
CPCB01J27/24B01J31/003B01J35/004B01J37/082C02F1/30C02F2101/345C02F2305/10
Inventor 李春梅于思宇王赟韩娟顾磊王书浩
Owner JIANGSU UNIV
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