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Preparation method of NaNbO3/Ag2O acousto-optic catalytic material

A catalytic material, acousto-optic technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of low utilization of visible light and achieve excellent acousto-optical The effect of catalytic activity, easy operation of the process, and simple process

Active Publication Date: 2018-05-04
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its wide band gap, it can only use ultraviolet light in sunlight, and the utilization rate of visible light is very low. For this reason, researchers have carried out a lot of exploration, through metal modification, construction of heterojunction and other means to improve Its UV photocatalytic properties

Method used

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  • Preparation method of NaNbO3/Ag2O acousto-optic catalytic material
  • Preparation method of NaNbO3/Ag2O acousto-optic catalytic material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1 a kind of NaNbO 3 / Ag 2 The preparation method of O acoustophotocatalytic material, comprises the steps:

[0022] (1) Dissolve 0.004 mol of niobium pentachloride in 25 mL of absolute ethanol and stir to obtain a clear solution. The molar concentration of niobium pentachloride is 0.16 mol / L.

[0023] (2) Dissolve 0.004 mol of silver nitrate and 0.008 mol of sodium nitrate in 25 mL of deionized water and stir to obtain a clear solution, wherein the molar concentration of silver nitrate in the solution is 1 times that of niobium pentachloride, and the molar concentration of nitrate is 3 times that of niobium pentachloride;

[0024] (3) Mix and stir the above two solutions, weigh an appropriate amount of 1.5 g NaOH and dissolve it in 25 mL deionized water, add it dropwise to the mixed solution while ultrasonicating, stir for 10 minutes, put it into a hydrothermal kettle, and heat it at 200 °C After heat treatment in water for 48 hours, NaNbO can be obtained...

Embodiment 2

[0027] a NaNbO 3 / Ag 2 The preparation method of O acoustophotocatalytic material, comprises the steps:

[0028] (1) Dissolve 0.0025 mol of niobium pentachloride in 25 mL of absolute ethanol and stir to obtain a clear solution. The molar concentration of niobium pentachloride is 0.1 mol / L.

[0029] (2) Weigh 0.00075 mol of silver nitrate and 0.01175 mol of sodium nitrate and dissolve them in 25 mL of deionized water, stir to obtain a clear solution, wherein the molar concentration of silver nitrate in the solution is 0.3 times that of niobium pentachloride, and the molar concentration of nitrate is 5 times that of niobium pentachloride;

[0030] (3) Mix and stir the above two solutions, weigh an appropriate amount of 1.2 g NaOH and dissolve it in 25 mL deionized water, add it dropwise to the mixed solution while ultrasonicating, stir for 10 minutes, put it into a hydrothermal kettle, and heat it at 180 °C After heat treatment in water for 60 hours, NaNbO can be obtained af...

Embodiment 3

[0032] a NaNbO 3 / Ag 2 The preparation method of O acoustophotocatalytic material, comprises the steps:

[0033] (1) Dissolve 0.0075 mol of niobium pentachloride in 25 mL of absolute ethanol and stir to obtain a clear solution. The molar concentration of niobium pentachloride is 0.3 mol / L.

[0034] (2) Weigh 0.01125 mol of silver nitrate and 0.01875 mol of sodium nitrate and dissolve them in 25 mL of deionized water, stir to obtain a clear solution, wherein the molar concentration of silver nitrate in the solution is 1.5 times that of niobium pentachloride, and the molar concentration of nitrate is 4 times that of niobium pentachloride;

[0035] (3) Mix and stir the above two solutions, weigh an appropriate amount of 1.8 g NaOH and dissolve it in 25 mL deionized water, add it dropwise to the mixed solution while ultrasonicating, stir for 10 minutes, put it into a hydrothermal kettle, and heat it at 240 °C After heat treatment in water for 36 hours, NaNbO can be obtained aft...

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Abstract

The invention relates to a preparation method of a NaNbO3 / Ag2O acousto-optic catalytic material, belonging to the field of catalytic materials. According to the preparation method, a hydrothermal method is adopted, niobium pentachloride, sodium hydroxide, sodium nitrate and silver nitrate are taken as raw materials, and hydrothermal treatment is carried out for 36-60h at the temperature of 180-240DEG C, so that the NaNbO3 / Ag2O acousto-optic catalytic material is obtained; NaNbO3 in the prepared material has a cubic morphology with square holes and has excellent visible light acousto-optic catalytic performance, so that the prepared material has greater application potential in the fields of environmental protection and energy. The preparation method provided by the invention is simpler and easy to operate, and does not need complicated equipment.

Description

technical field [0001] The invention belongs to the field of photocatalytic material water treatment, in particular to a kind of NaNbO 3 / Ag 2 O Preparation of acoustophotocatalytic materials. Background technique [0002] With the rapid development of global industry and agriculture, deteriorating environmental problems have increasingly become the focus of the world. In particular, environmental governance and restoration are imperative, especially the removal of organic pollutants in water bodies. Compared with methods such as adsorption and filtration, photocatalytic technology based on semiconductor materials, as a new green purification technology, can directly absorb and utilize sunlight and convert it into chemical energy, and decompose organic pollutants in water into water, carbon dioxide or inorganic pollutants. Poisonous small molecules have the advantages of low cost, high efficiency, stability, and non-toxicity, and have potential broad application prospects ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/68C02F1/30C02F1/32
CPCC02F1/30C02F1/32B01J23/002B01J23/682C02F2305/10B01J2523/00B01J35/39B01J2523/12B01J2523/18B01J2523/56
Inventor 蒲锡鹏汤云祥邓立成胥传旺张大凤
Owner LIAOCHENG UNIV