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Indoor visible-light-responsive catalyst, and preparation method and application thereof

A catalyst and visible light technology, applied in the field of indoor environment, can solve the problems of limited reaction rate, single organic gas, limited use effect, etc., to achieve the effect of optimizing reaction efficiency, increasing conversion and utilization, and large market potential

Inactive Publication Date: 2020-09-04
云深(福建)环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Chinese patent with publication number CN108855064A discloses a binary alloy @TiO 2 Visible photocatalytic material and its preparation method, which adopts a one-step hydrothermal method on TiO 2 The surface is loaded with binary alloy nanoparticles, the reaction time is short, the alloy composition is controllable, and various crystal phases of TiO 2 The surface can be loaded, and its characteristic is that the alloy composition / ratio is controllable, which can effectively optimize its visible light catalytic water splitting hydrogen production / oxygen output and carbon dioxide photoreduction activity; however, factors such as light source and light intensity limit its use in indoor environments. At the same time, the organic gas that can be degraded is relatively simple, and the mineralization rate is not high, so the use effect in today's complex indoor components is limited

Method used

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  • Indoor visible-light-responsive catalyst, and preparation method and application thereof
  • Indoor visible-light-responsive catalyst, and preparation method and application thereof
  • Indoor visible-light-responsive catalyst, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Dissolve 10g of titanium tetrachloride, 30ml of isopropanol, 10ml of deionized water and 1ml of diethylenetriamine in a beaker sonically at room temperature to form liquid A; take 10ml of ethanol, 20ml of deionized water, 1ml of nitric acid and 0.1g of chlorine at room temperature After 5 minutes of ultrasonication, the ferric oxide forms liquid B; add liquid A and liquid B into the polytetrafluoroethylene liner, mix and ultrasonically homogenize; keep the constant temperature in an oven at 100°C, and heat for 0.5 hours; naturally cool to room temperature, After sonication, it was centrifuged, washed three times with ethanol and deionized water, and dried to obtain Fe@TiO 2 powder.

[0038] The above 10gFe@TiO 2 Powder, 0.1g chloroauric acid and 0.1g polyvinylpyrrolidone were added to 30ml deionized water to dissolve water solution C; 0.5g hydrogen peroxide was added to 5ml deionized water to form solution D; under ice bath conditions, accompanied by 500r / min Add solu...

Embodiment 2

[0040] At room temperature, 10g of isopropyl titanate, 30ml of isopropanol, 10ml of deionized water and 1ml of diethylenetriamine were ultrasonically dissolved in a beaker to form liquid A; at room temperature, 10ml of ethanol, 20ml of deionized water, 1ml of nitric acid and 0.1g Ferric nitrate was uniformly ultrasonicated for 5 minutes to form liquid B; add liquid A and liquid B into the polytetrafluoroethylene liner, mix and ultrasonically homogenize; keep the constant temperature in the oven at 100°C, heat for 0.5 hours; naturally cool to room temperature, After sonication, it was centrifuged, washed three times with ethanol and deionized water, and dried to obtain Fe@TiO 2 powder.

[0041] The above 10gFe@TiO 2Powder, 0.1g chloroauric acid and 0.1g polyvinylpyrrolidone were added to 30ml deionized water to dissolve water solution C; 0.5g sodium borohydride was added to 5ml deionized water to form solution D; under ice bath conditions, accompanied by 500r / min Add solution...

Embodiment 3

[0043] At room temperature, 16g of isopropyl titanate, 42ml of isopropanol, 20ml of deionized water and 3ml of diethylenetriamine were ultrasonically dissolved in a beaker to form liquid A; at room temperature, 20ml of ethanol, 30ml of deionized water, 2ml of nitric acid and 0.5g Ferric nitrate was uniformly ultrasonicated for 10 minutes to form liquid B; add liquid A and liquid B into the polytetrafluoroethylene liner, mix and ultrasonically homogenize; and continue to heat in an oven at a constant temperature of 150°C for 2 hours; naturally cool to room temperature, After sonication, it was centrifuged, washed three times with ethanol and deionized water, and dried to obtain Fe@TiO 2 powder.

[0044] The above 15gFe@TiO 2 Powder, 0.15g of chloroauric acid and 0.15g of polyvinylpyrrolidone were added to 60ml of deionized water to dissolve to prepare aqueous solution C; 0.75g of sodium borohydride was added to 12ml of deionized water to form solution D; under ice bath conditi...

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Abstract

The invention discloses an indoor visible-light-responsive catalyst, and a preparation method and application thereof. According to the invention, dodecahedral nano-structured Fe@TiO2 with a high-proportion (001) surface is prepared from Fe-doped TiO2 by using a hydrothermal method, so photocatalysis efficiency is improved, the absorption wavelength range of TiO2 is expanded to a visible light region, and the degradation efficiency of benzene series is improved; and Au nanoparticles are loaded to Fe@TiO2 through a sol-gel method to prepare Au / Fe@TiO2, and the degradation efficiency of ammoniaand formaldehyde is improved on the basis of the localized surface plasma resonance effect of the Au nanoparticles. The proportion of metal in the prepared material is adjustable, the reaction efficiency of an Au / Fe@TiO2 visible catalytic material system can be optimized, and the degradation effect can be improved exponentially when the material is applied to the field of pollutant degradation.

Description

technical field [0001] The invention relates to the technical field of indoor environment, in particular to an indoor visible light-responsive catalyst, a preparation method and an application thereof. Background technique [0002] With the rapid development of my country's economy and the substantial improvement of living standards, the demand for new housing has increased sharply. At the same time, interior decoration is increasingly pursuing luxury. At the same time, indoor air pollution caused by building materials is widespread and has become one of the main sources of indoor air pollution. one. The problem of indoor air pollution is becoming more and more serious, and it presents the characteristics of low concentration and complex composition. On the other hand, with the development of society, more and more human activities are carried out indoors. Poor indoor air quality will affect human life and work. [0003] The current situation of indoor air pollution in my ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J37/10B01J37/18B01D53/86B01D53/72B01D53/58
CPCB01J23/8906B01J37/10B01J37/036B01J37/18B01D53/8668B01D53/8634B01J35/23B01J35/40B01J35/39
Inventor 林伟余梦圆王可王冰清王治淇
Owner 云深(福建)环保科技有限公司
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