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Novel composite photocatalyst Ag-TiO2/SBA-16 (Santa Barbara USA-16) and synthesis method thereof

A SBA-16, photocatalyst technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of easy agglomeration and deactivation recovery, low solar energy utilization, low quantum efficiency, etc., to prevent Agglomeration inactivation, easy separation, and the effect of promoting capture

Inactive Publication Date: 2011-11-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve TiO 2 To solve the problems of low solar energy utilization rate, low quantum efficiency, poor adsorption performance, easy agglomeration and deactivation, and difficult recovery, a new composite photocatalyst Ag-TiO is provided. 2 / SBA-16 and its synthesis method

Method used

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specific Embodiment approach 1

[0008] Specific implementation mode 1: This implementation mode provides a new composite photocatalyst Ag-TiO 2 / SBA-16:

[0009] This novel composite photocatalyst Ag-TiO 2 / SBA-16 is made of tetrabutyl titanate, AgNO 3 , absolute ethanol, glacial acetic acid, ethyl acetate and mesoporous molecular sieve SBA-16; wherein the volume ratio of tetrabutyl titanate to absolute ethanol is (2~3):1; glacial acetic acid and absolute ethanol The volume ratio of Ag to Ti is (1-2): 1; the volume ratio of ethyl acetate to absolute ethanol is (40-60): 1; the atomic percentage of Ag and Ti is (0.1-1.5): 100; AgNO 3 The mass ratio to the mesoporous molecular sieve SBA-16 is (0.001-0.02): 1; the tetrabutyl titanate, absolute ethanol, glacial acetic acid and ethyl acetate are all analytically pure.

specific Embodiment approach 2

[0010] Specific implementation mode 2: This implementation mode provides a new composite photocatalyst Ag-TiO 2 The synthetic method of / SBA-16 is to finish according to the following steps:

[0011] 1. Dissolution: AgNO 3 Dissolved in absolute ethanol to obtain transparent AgNO 3 Ethanol solution; 2. Mixing: to the AgNO prepared in step 1 3 Add ethyl acetate, tetrabutyl titanate, and glacial acetic acid to the ethanol solution, and stir for 8 to 12 minutes to obtain a uniform mixed solution; 3. Loading body: add carrier mesoporous molecular sieve SBA-16 to the mixed solution prepared in step 2 , stirred for 25 to 35 minutes, then put into a reaction kettle with polytetrafluoroethylene substrate, and reacted at 130°C to 150°C for 20 to 28 hours to obtain a solid product; 4. Washing and drying: the solid product prepared in step 3 was used without Washing with water and ethanol, suction filtration, placing in an oven, drying at 70-90°C for 20-28h; 5. Roasting: roasting the dr...

specific Embodiment approach 3

[0012] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the volume ratio of tetrabutyl titanate added in step two to the dehydrated alcohol described in step one is 2.56:1, step two The volume ratio of the glacial acetic acid added described in and the dehydrated ethanol described in step 1 is 1.72: 1, and the volume ratio of the ethyl acetate described in step 2 added and the dehydrated alcohol described in step 1 is 50 : 1. Others are the same as in the second embodiment.

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Abstract

The invention provides a novel composite photocatalyst Ag-TiO2 / SBA-16 (Santa Barbara USA-16) and a synthesis method thereof, relates to a novel composite photocatalyst and a synthesis method thereof, and aims to solve the problems of low solar utilization, low quantum efficiency, poor adsorption performance, easiness in agglomeration inactivation and difficulty in reclamation of TiO2. The novel composite photocatalyst Ag-TiO2 / SBA-16 is prepared from butyl titanate, AgNO3, absolute ethanol, acetic acid, ethyl acetate and a mesoporous molecular sieve SBA-16. The synthesis method of the novel composite photocatalyst Ag-TiO2 / SBA-16 comprises the following steps: 1, dissolving; 2, uniformly mixing; 3, adding a vector; 4, washing and drying; and 5, roasting. The method is mainly used for synthesizing the novel composite photocatalyst Ag-TiO2 / SBA-16.

Description

technical field [0001] The invention relates to a novel composite photocatalyst and a synthesis method thereof. Background technique [0002] With the development of science and technology and the modernization of industry, people's living standards have been significantly improved, but at the same time people are also harmed by the ensuing environmental pollution. Water pollution, air pollution and indoor harmful gases have caused serious harm to human health. Sewage treatment and air purification have therefore become important research contents for scientific researchers in various countries. How to effectively remove toxic substances such as surfactants, dyes, and heavy metal ions in industrial wastewater, as well as organic waste gases and toxic gases in the atmosphere, has become a hot topic in various research fields. As an advanced oxidation technology, photocatalytic oxidation has developed rapidly in the fields of sewage treatment, organic waste gas and toxic gas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03
Inventor 强亮生唐翔波马晶王忠凯王余
Owner HARBIN INST OF TECH
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