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a mos 2 /tio 2 Composite photocatalyst and its application

A composite photocatalyst technology, which is applied in the fields of nanocomposite materials, environmental purification and photocatalysis, can solve the problems of low quantum efficiency and easy deactivation, achieve good stability and improve degradation efficiency

Active Publication Date: 2022-04-19
福建水井头环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a kind of MoS 2 / TiO 2 Composite photocatalyst and its application, prepared MoS 2 / TiO 2 The composite photocatalyst is a nano-airgel composite material, which can form an airgel layer on the base plate through spraying and curing, so as to achieve large-area and continuous long-term degradation of toluene generated in the room. At the same time, MoS 2 and TiO 2 The composite material can solve the traditional photocatalyst TiO 2 Low quantum efficiency, easy deactivation and other problems, the efficient degradation of p-toluene can be achieved under the action of visible light

Method used

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  • a mos <sub>2</sub> /tio <sub>2</sub> Composite photocatalyst and its application
  • a mos <sub>2</sub> /tio <sub>2</sub> Composite photocatalyst and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A kind of MoS 2 / TiO 2 Composite photocatalyst, MoS prepared by hydrothermal method 2 / TiO 2 The nano airgel composite material specifically comprises the following steps:

[0030] (1) Dissolve 1.607g ammonium molybdate tetrahydrate in 20mL water to form A solution and keep A solution in a clear state;

[0031] (2) 3mL titanium tetroxide was dissolved in 25mL absolute ethanol to form B solution;

[0032] (3) After mixing solution A and solution B, perform ultrasonic treatment for 30 minutes, and the molar ratio of titanium and molybdenum in the mixed solution after mixing solution A and solution B is 1:1;

[0033] (4) Add 0.5g thiourea to the mixed solution of A solution and B solution after step (3), and mechanically stir for 1h to carry out homogeneous reaction;

[0034] (5) Transfer the mixed solution treated in step (4) to a 50mL hydrothermal kettle lined with polytetrafluoroethylene for reaction, tighten the hydrothermal kettle and put it into a constant tempe...

Embodiment 2

[0036] A kind of MoS 2 / TiO 2 Composite photocatalyst, MoS prepared by hydrothermal method 2 / TiO 2 The nano airgel composite material specifically comprises the following steps:

[0037] (1) Dissolve 2.812g ammonium molybdate tetrahydrate in 35mL water to form A solution and keep A solution in a clear state;

[0038] (2) Dissolve 5mL titanium tetroxide in 41mL absolute ethanol to form B solution;

[0039] (3) After mixing the A solution and the B solution, perform ultrasonic treatment for 30 minutes, and the molar ratio of titanium and molybdenum in the mixed solution after the A solution is mixed with the B solution is 1:5;

[0040] (4) Add 1.0 g of thiourea to the mixed solution of A solution and B solution after step (3), and mechanically stir for 5 hours to carry out homogeneous reaction;

[0041] (5) Transfer the mixed solution treated in step (4) to a 50mL hydrothermal kettle with a polytetrafluoroethylene liner for reaction, tighten the hydrothermal kettle and put...

Embodiment 3

[0043] A kind of MoS 2 / TiO 2 Composite photocatalyst, MoS prepared by hydrothermal method 2 / TiO 2 The nano airgel composite material specifically comprises the following steps:

[0044] (1) Dissolve 2.411g ammonium molybdate tetrahydrate in 30mL water to form A solution and keep A solution in a clear state;

[0045] (2) 3.6mL titanium tetroxide was dissolved in 30mL absolute ethanol to form B solution;

[0046] (3) After mixing the A solution and the B solution, perform ultrasonic treatment for 30 minutes, and the molar ratio of titanium and molybdenum in the mixed solution after the A solution is mixed with the B solution is 1:7;

[0047] (4) Add 0.8g thiourea to the mixed solution of A solution and B solution after step (3), and mechanically stir for 3h to carry out homogeneous reaction;

[0048] (5) Transfer the mixed solution treated in step (4) to a 50mL hydrothermal kettle lined with polytetrafluoroethylene for reaction, tighten the hydrothermal kettle and put it ...

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Abstract

The present invention relates to a kind of MoS 2 / TiO 2 Composite photocatalyst, in the present invention adopts hydrothermal method to prepare MoS 2 / TiO 2 Nano-aerogel composites, while incorporating MoS 2 / TiO 2 The nano-airgel composite material is laid on the base plate in the interior decoration project, and forms an airgel layer after curing, which can degrade the toluene generated indoors under photocatalytic conditions.

Description

technical field [0001] The present invention relates to the technical field of nanocomposite materials, environmental purification and photocatalysis technology, and specifically relates to a kind of MoS 2 / TiO 2 Composite photocatalysts and their applications. Background technique [0002] Since the 1970s, people have paid more and more attention to the research on volatile organic compounds. Volatile organic compounds refer to compounds with a boiling point between 50-260°C under normal pressure, excluding pesticides. Generally, it is mainly used as an organic solvent, and with its use, it enters the atmosphere, and then enters the soil and water with the transmission of precipitation and wind, causing pollution. For indoor pollution, it mainly comes from interior decoration, decoration materials, such as paint and its solvents, wood preservatives, coatings, plywood, etc., which can release various volatile organic substances such as benzene series and formaldehyde at r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051B01J37/10B01J37/34B01J37/02B01D53/86B01D53/72
CPCB01J27/051B01J37/10B01J37/343B01J37/0215B01J37/341B01D53/007B01D53/864B01D2257/7027B01D2259/4508B01D2259/802B01J35/39
Inventor 刘前锋刘国栋
Owner 福建水井头环保科技有限公司