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Preparation method of porous BiOCl/g-C3N4 heterogeneous nano powder

A nano-powder, g-c3n4 technology, applied in catalyst activation/preparation, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of less heterogeneous nano-powder and achieve narrow particle size distribution, The effect of uniform product distribution and easy control of product composition

Pending Publication Date: 2020-12-29
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the synthesis of porous BiOCl / g-C by tube furnace pyrolysis combined with ultrasonic in situ precipitation 3 N 4 There are few reports on heterogeneous nanopowders

Method used

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  • Preparation method of porous BiOCl/g-C3N4 heterogeneous nano powder
  • Preparation method of porous BiOCl/g-C3N4 heterogeneous nano powder
  • Preparation method of porous BiOCl/g-C3N4 heterogeneous nano powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Porous BiOCl (20wt%) / g-C 3 N 4 Preparation of heterogeneous nanopowder:

[0034] (1) Weigh 5g of urea powder and place it in a quartz boat, then wrap and seal it with tinfoil, push the sample to the central position of the glass tube of the tube furnace with a sampling rod, and place the two tube plugs at the specified position; Set the heating time and holding temperature of the tube furnace, and raise the temperature from room temperature to 515°C with a gradient of 5°C / min, hold for 1 hour, then heat to 600°C with the same gradient, and hold for 1 hour. Cool to room temperature after the reaction, wash and centrifuge the obtained powder product several times with acetonitrile, dry and grind to obtain the desired product.

[0035] (2) First, take 1.6g g-C 3 N 4 Add the powder and 10mL deionized water into a 50mL beaker, and ultrasonically disperse for 1h to obtain g-C 3 N 4 suspension; then sequentially add 0.745g bismuth nitrate pentahydrate and 0.115g potassiu...

Embodiment 2

[0044] Porous rosette BiOCl (10wt%) / g-C 3 N 4 Preparation of heterogeneous nanopowder:

[0045] (1) Weigh 5g of urea powder and place it in a quartz boat, then wrap and seal it with tinfoil, push the sample to the central position of the glass tube of the tube furnace with a sampling rod, and place the two tube plugs at the specified position; Set the heating time and holding temperature of the tube furnace, and raise the temperature from room temperature to 515°C with a gradient of 5°C / min, hold for 1 hour, then heat to 600°C with the same gradient, and hold for 1 hour. Cool to room temperature after the reaction, wash and centrifuge the obtained powder product several times with acetonitrile, dry and grind to obtain the desired product.

[0046] (2) First, take 1.8g g-C 3 N 4 Add the powder and 10mL deionized water into a 50mL beaker, and ultrasonically disperse for 1h to obtain g-C 3 N 4 Suspension; then add 0.373g bismuth nitrate pentahydrate and 0.057g potassium chl...

Embodiment 3

[0049] Porous BiOCl(5wt%) / g-C 3 N 4 Preparation of heterogeneous nanopowder:

[0050] (1) Weigh 5g of urea powder and place it in a quartz boat, then wrap and seal it with tinfoil, push the sample to the central position of the glass tube of the tube furnace with a sampling rod, and place the two tube plugs at the specified position; Set the heating time and holding temperature of the tube furnace, and raise the temperature from room temperature to 515°C with a gradient of 5°C / min. After holding for 1 hour, heat to 600°C with the same gradient and hold for 1 hour. Cool to room temperature after the reaction, wash and centrifuge the obtained powder product several times with acetonitrile, dry and grind to obtain the desired product.

[0051] (2) First, take 1.9g g-C 3 N 4 Add the powder and 10mL deionized water into a 50mL beaker, and ultrasonically disperse for 1h to obtain g-C 3 N 4 suspension; then 0.186g of bismuth nitrate pentahydrate and 0.029g of potassium chloride...

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Abstract

The invention discloses a preparation method of porous BiOCl / g-C3N4 heterogeneous nano-powder, and relates to the technical field of composite materials suitable for new energy and environmental sewage remediation. The preparation method comprises the following steps: putting urea or melamine into a quartz boat tightly wrapped by tinfoil, putting the quartz boat into a tubular furnace, carrying out a reaction, washing, and drying to obtain faint yellow porous g-C3N4 nano-powder; and ultrasonically dispersing a certain amount of g-C3N4 powder into a solvent to obtain a g-C3N4 turbid liquid, sequentially adding a certain amount of bismuth nitrate pentahydrate and potassium chloride into the g-C3N4 turbid liquid, continuously carrying out an ultrasonic reaction on the mixture of the g-C3N4 turbid liquid, the bismuth nitrate pentahydrate and the potassium chloride, and carrying out post-treatment to obtain faint yellow porous BiOCl / g-C3N4 heterogeneous nano-powder. According to the invention, the porous BiOCl / g-C3N4 heterogeneous nano-powder is successfully obtained by combining tubular furnace pyrolysis with an ultrasonic in-situ precipitation method, and has the characteristics of narrow particle size distribution, uniform morphology distribution, controllable particle size and the like.

Description

technical field [0001] The invention relates to the technical field of composite materials applicable to new energy sources and environmental sewage restoration, in particular to a porous BiOCl / g-C 3 N 4 Preparation method of heterogeneous nanopowder. Background technique [0002] g-C 3 N 4 It does not exist in nature and needs to be synthesized artificially. For example, Zhao et al prepared g-C by pyrolyzing cyanamide at 580 °C 3 N 4 , and a series of characterization methods were used to characterize the catalyst. The catalytic activity was studied by degrading RhB, while the g-C 3 N 4 The amount of usage and the effect of controlling the pH value of the solution on the degradation of RhB, the g-C can be achieved by pyrolysis 3 N 4 The method has the advantages of simple preparation and short reaction cycle. Rudai et al prepared g-C by a solvothermal method 3 N 4 , and carried out a qualitative analysis of the influencing factors in the whole reaction process ...

Claims

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Application Information

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IPC IPC(8): B01J27/06B01J27/24B01J35/00B01J35/02B01J35/10B01J37/03B01J37/08B01J37/34C02F1/30C02F101/30
CPCB01J37/082B01J37/031B01J37/343B01J27/24B01J27/06C02F1/30C02F2305/10C02F2101/308B01J35/00B01J35/30B01J35/643B01J35/613B01J35/39B01J35/633
Inventor 谢劲松盛新宇李德涵鲁红典于婷婷陈鸿君李旭姚诗佳李莹莹
Owner HEFEI UNIV
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