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A kind of cerium fluoride/attapulgite up-conversion composite photocatalytic material and its preparation method and application

A technology of composite photocatalysis and photocatalytic material, which is applied in the field of cerium fluoride/attapulgite on-conversion composite photocatalytic material and its preparation, can solve the problems of low utilization rate of sunlight and the like, so as to expand the light response range and improve the utilization rate , the effect of no hysteresis effect

Active Publication Date: 2020-02-14
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of low utilization rate of sunlight, the invention provides a cerium fluoride / attapulgite up-conversion composite photocatalytic material

Method used

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  • A kind of cerium fluoride/attapulgite up-conversion composite photocatalytic material and its preparation method and application
  • A kind of cerium fluoride/attapulgite up-conversion composite photocatalytic material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) 3.52g Ce(NO 3 ) 3 ·6H 2 O, 0.90 g NH 4 F, 4.0g of ATP was added into deionized water and ultrasonically dissolved, adjusting the pH of the system to 4-5, and shaking the beaker to make it evenly mixed. Then transfer it to a microwave hydrothermal kettle for microwave hydrothermal heating, set the temperature to 160°C, and set the time to 70min;

[0026] (2) Centrifuge the sample prepared in step (1) with a centrifuge, and then wash it with water. Then the sample was dried and ground to obtain the cerium fluoride / attapulgite conversion composite photocatalytic material 40%CeF 3 / ATP.

[0027] The obtained sample is characterized by X-ray powder diffraction to characterize its structure and composition, and the TEM picture of the sample is observed with a transmission electron microscope. The 40% CeF prepared according to the process of Example 1 3 The XRD pattern of / ATP is as follows figure 1 As shown, CeF appeared in the composite 3 and ATP characteristic p...

Embodiment 2

[0033] (1) 0.87g Ce(NO 3 ) 3 ·6H 2 O, 0.22g NH4 F, 4.0g of ATP was added into deionized water and ultrasonically dissolved, adjusting the pH of the system to 4-5, and shaking the beaker to make it evenly mixed. Then transfer it to a microwave hydrothermal kettle for microwave hydrothermal heating, set the temperature to 160°C, and set the time to 70min;

[0034] (2) Centrifuge the sample prepared in step (1) with a centrifuge, and then wash it with water. Then the sample is dried and ground to obtain the cerium fluoride / attapulgite up-conversion composite photocatalytic material 10%CeF 3 / ATP.

[0035] Subsequent testing is as in Example 1, and the desulfurization rate is 82%.

Embodiment 3

[0037] (1) 2.65g Ce(NO 3 ) 3 ·6H 2 O, 0.68g NH 4 F, 4.0g of ATP was added into deionized water and ultrasonically dissolved, adjusting the pH of the system to 4-5, and shaking the beaker to make it evenly mixed. Then transfer it to a microwave hydrothermal kettle for microwave hydrothermal heating, set the temperature to 160°C, and set the time to 70min;

[0038] (2) Centrifuge the sample prepared in step (1) with a centrifuge, and then wash it with water. Then the sample is dried and ground to obtain the cerium fluoride / attapulgite up-conversion composite photocatalytic material 30%CeF 3 / ATP.

[0039] Subsequent testing is as in Example 1, and the desulfurization rate is 87%.

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Abstract

The invention belongs to the field of new chemical materials, and in particular, relates to a cerium fluoride / attapulgite up-conversion composite photocatalytic material and a preparation method and an application thereof. The preparation method comprises the steps: respectively adding Ce(NO3)3.6H2O, NH4F and attapulgite into deionized water and dissolving, adjusting the pH of the system to 4-5, and uniformly stirring and mixing by a magnetic force; then transferring the mixture to a microwave hydrothermal kettle, carrying out a hydrothermal reaction, and carrying out a reaction for 1-3 h at the power of 400 W; and carrying out centrifugal separation of the prepared sample, then drying, grinding, and thus obtaining the cerium fluoride / attapulgite up-conversion composite photocatalytic material. The material is applied to the field of photocatalytic desulfurization, and the desulfurization rate can reach 90% under the illumination for 3 h.

Description

technical field [0001] The invention belongs to the field of new chemical materials, and in particular relates to a cerium fluoride / attapulgite up-conversion composite photocatalytic material and its preparation method and application. Background technique [0002] In recent years, with the increasing consumption of fuel oil, the combustion of sulfur compounds contained in it emits a large amount of SO x . Sulfur oxides (SOx) produced by fuel combustion x ) has always been one of the main sources of acid rain and atmospheric haze, seriously affecting the environment and human health. Therefore, the production of low-sulfur gasoline is an inevitable trend. At present, the sulfur content in catalytic cracking gasoline (FCC gasoline) used in my country is 500-1600ppm, and the sulfur-containing compounds that are difficult to handle mainly include thiophene, alkyl-substituted thiophene and benzothiophene. To remove sulfur compounds contained in fuels, various methods such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/12B01D53/86B01D53/50
CPCB01D53/02B01D53/8609B01J27/12B01J35/004
Inventor 李霞章何承溧左士祥陆晓旺姚超
Owner CHANGZHOU UNIV
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