Titanium dioxide perforated micro-pipe photocatalyst for degrading phenol and its prodn. method

A titanium dioxide and photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problem of difficult separation of photocatalysts and degraded substances, and achieve uniform pore size and structure. Effect

Inactive Publication Date: 2007-08-15
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the titanium dioxide photocatalyst has a special structure and is easy to separate and recycle, it can fundamentally solve the problem of difficult separation of photocatalysts and degraded substances, showing good industrialization prospects

Method used

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  • Titanium dioxide perforated micro-pipe photocatalyst for degrading phenol and its prodn. method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In an ice-water bath, 25mL of 3.0mol L -1 TiCl 4 Add the solution dropwise to 150mL distilled water, heat the solution to 50°C while stirring, add 4.5mL glacial acetic acid dropwise, adjust the pH value of the solution to 7 with concentrated ammonia water, seal the container, and age at 25°C for 72 hours, and the precipitate Filter with suction, wash with deionized water and absolute ethanol three times respectively, bake in vacuum at 80°C for 24h, and bake at 450°C for 2h. Available white TiO 2 The porous microtube is recorded as 1# catalyst.

Embodiment 2

[0023] In an ice-water bath, 25mL of 3.0mol L -1 TiCl 4 The solution was added dropwise into 150 mL of distilled water, keeping the temperature of the solution at 25° C., and the remainder was the same as that in Example 1, which was recorded as 2# catalyst.

Embodiment 3

[0025] In an ice-water bath, 25mL of 3.0mol L -1 TiCl 4 The solution was added dropwise into 150 mL of distilled water, and the temperature of the solution was raised to 70° C. under stirring, and the remainder was the same as in Example 1, which was recorded as 3# catalyst.

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PUM

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Abstract

The invention relates to a titania porous micro tube optical catalyst for degrading fenol in water and relative preparation. The inventive catalyst is TiO2 porous micro tube with specific structure composed from direct deposit method, that using titanic chloride as titanium source, directly hydrolyzing and depositing, in the condition with some dispersers, to be filtered, washed, dried, baked and activated to obtain final TiO2 optical catalyst containing nitrogen. The inventive catalyst has specific structure, integral appearance, and uniform aperture, thereby improving the ability for degrading fenol, with high activity in optical catalysis, the ability for degrading fenol into water and carbon dioxide, and wide application.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a highly active titanium dioxide porous microtube photocatalyst used for ultraviolet light or visible light degradation of phenol in water and a preparation method thereof. Background technique [0002] TiO 2 Photocatalyst materials have very broad application prospects in the degradation of organic pollutants, water and air purification, sterilization and disinfection, ecological building materials and other fields, which has aroused extensive interest and concern from governments, industrial departments and academic circles around the world. In the past ten years, semiconductor photocatalyst materials have become the research focus and focus of scientists from all over the world. There are more and more research papers and patents in this area, and thousands of research papers are published every year. In practical applications, TiO 2 Photocatalyt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06C02F1/30C02F1/32
Inventor 戴维林徐建华曹勇范康年
Owner FUDAN UNIV
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