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Mesoporous surface defect Ni-N-TiO2 microsphere photocatalytic material and preparation method thereof

A technology of photocatalytic materials and defects, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as surface defects

Inactive Publication Date: 2017-12-19
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Ni-TiO 2 The doping of N elements also causes a large number of surface defects

Method used

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  • Mesoporous surface defect Ni-N-TiO2 microsphere photocatalytic material and preparation method thereof
  • Mesoporous surface defect Ni-N-TiO2 microsphere photocatalytic material and preparation method thereof
  • Mesoporous surface defect Ni-N-TiO2 microsphere photocatalytic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] At room temperature, fully dissolve 1.98g hexadecylamine in 200mL ethanol solution (98wt.%), stir magnetically, add nickel sulfate solution, add 1.6mL deionized water at the same time, finally turn down the magnetic stirrer rotation speed, press Ni and The molar ratio of Ti is 0.5 / 100 and titanium isopropoxide is added rapidly. After stirring for 30s, the solution was left to settle for 18h. The resultant was washed 3 times with ethanol and deionized water, dried and ground. Transfer the powder to a 100mL stainless steel high temperature and high pressure reactor with polytetrafluoroethylene lining, add 40mL ethanol and 20mL water, place it in a muffle furnace for hydrothermal reaction at 160°C for 18h, then cool to room temperature, and the obtained product is water and absolute ethanol for three times to remove possible residual impurities, centrifugally filter, and vacuum-dry at 60°C. The dried product was calcined at 500° C. for 2 h in an air atmosphere. Mesoporo...

Embodiment 2

[0030] At room temperature, fully dissolve 1.98g hexadecylamine in 200mL ethanol solution (98wt.%), stir magnetically, add nickel sulfate solution, add 1.6mL deionized water at the same time, finally turn down the magnetic stirrer rotation speed, press Ni and The molar ratio of Ti is 0.1 / 100 and titanium isopropoxide is added rapidly. After stirring for 30s, the solution was allowed to settle for 12h. The resultant was washed 3 times with ethanol and deionized water, dried and ground. Transfer the powder to a 100mL stainless steel high temperature and high pressure reactor with polytetrafluoroethylene lining, add 40mL ethanol and 20mL water, place it in a muffle furnace for hydrothermal reaction at 180°C for 14h, then cool to room temperature, and the obtained product is water and absolute ethanol for three times to remove possible residual impurities, centrifugally filter, and vacuum-dry at 60°C. The dried product was calcined at 400 °C for 1 h in an air atmosphere. Calcin...

Embodiment 3

[0032] At room temperature, fully dissolve 1.98g hexadecylamine in 200mL ethanol solution (98wt.%), stir magnetically, add nickel sulfate solution, add 1.6mL deionized water at the same time, finally turn down the magnetic stirrer rotation speed, press Ni and The molar ratio of Ti is 0.2 / 100 and titanium isopropoxide is added rapidly. After stirring for 30s, the solution was allowed to settle for 12h. The resultant was washed 3 times with ethanol and deionized water, dried and ground. Transfer the powder to a 100mL stainless steel high temperature and high pressure reactor with polytetrafluoroethylene lining, add 45mL ethanol and 15mL water, place in a muffle furnace for hydrothermal reaction at 180°C for 14h, then cool to room temperature, and the obtained product is water and absolute ethanol for three times to remove possible residual impurities, centrifugally filter, and vacuum-dry at 60°C. The dried product was calcined at 400° C. for 30 min in an air atmosphere. Calci...

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Abstract

The invention relates to a mesoporous surface defect Ni-N-TiO2 microsphere photocatalytic material and a preparation method thereof. The preparation method specifically comprises: preparing mesoporous surface defect Ni-TiO2 microspheres, and carrying out nitriding treatment, wherein a surfactant is added during the preparation of the mesoporous surface defect Ni-TiO2 microspheres, the nitrogen source for the nitriding treatment is ammonia gas, and the nitriding treatment is performed in the ammonia gas to obtain the mesoporous surface defect Ni-N-TiO2 microsphere photocatalytic material. According to the present invention, the mesoporous surface defect Ni-N-TiO2 microsphere photocatalytic material obtained through the experiment process has the mesoporous structure and has the uniform spherical structure.

Description

technical field [0001] The invention relates to the technical field of material synthesis, in particular to a mesoporous surface defect Ni-N-TiO 2 Microsphere photocatalytic material and preparation method thereof. Background technique [0002] In recent years, the use of nano-TiO 2 The purification of organic pollutants has attracted extensive attention of scholars at home and abroad. But the low photon quantum efficiency and slow reaction rate limit TiO 2 Practical progress of photocatalytic technology. How to further improve TiO 2 The photocatalytic activity has become a current active research topic. Nano TiO 2 Material modification is the method adopted by most researchers. The commonly used modification methods focus on metal doping, non-metal doping, noble metal loading and compounding of semiconductor materials. [0003] We use the transition metal Ni 2+ The method of doping titania modifies the material. On this basis, Ni-TiO 2 The material is nitrided to...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/08
CPCB01J27/24B01J35/39B01J35/51
Inventor 杨明辉邹明明冯璐姜慧芳
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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