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Method for preparing three-dimensional manometer load-type catalyst

A supported catalyst, three-dimensional nanotechnology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as small specific surface area, achieve simple preparation process, large action area, overcome dispersion poor sex effect

Inactive Publication Date: 2009-11-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst supports currently used are all bulk materials, such as stainless steel wire mesh, metal foam, activated carbon, etc. The size of these materials used to support catalysts is mostly on the order of millimeters or more, and the smallest is also on the order of microns, and the specific surface area is relatively small. Small

Method used

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  • Method for preparing three-dimensional manometer load-type catalyst
  • Method for preparing three-dimensional manometer load-type catalyst
  • Method for preparing three-dimensional manometer load-type catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0033] (1) Prepare a layer of SiNx thin film on the glass substrate with a chemical vapor deposition method, with a thickness of 200-2000nm;

[0034] (2) The configured SiO 2 The nanosphere solution is evenly sprayed onto the glass substrate covered with SiNx film, and dried; ( figure 1 and Figure 4 )

[0035] (3) Using SiO 2 Nanospheres as a mask, through SiNx material and SiO 2 The different etching rates of the material, using the reactive ion etching method to etch out the nano-column; ( figure 2 and Figure 5)

[0036] (4) Preparation of TiO on the etched nanocolumn array by magnetron sputtering technology 2 catalyst;( image 3 and Figure 6 )

[0037] (5) Through the above steps, TiO is formed 2 The catalyst is fixedly supported on SiO 2 Nanocomposite structures on nanospheres and SiNx nanopillars.

Embodiment 2

[0039] (1) Utilize the sol method to prepare a solution containing organic nanospheres, spray it directly onto the glass substrate, and dry to form a uniformly arranged array;

[0040] (2) Using organic nanospheres as a mask, through the different etching rates of the organic nanospheres and the glass substrate, the nanocolumns are etched by the reactive ion etching method;

[0041] (3) Prepare TiO on the etched nanocolumn array by magnetron sputtering technology 2 catalyst;

[0042] (4) Through the above steps, TiO is formed 2 Inorganic-organic composite nanocatalysts in which catalysts are fixedly supported on organic nanospheres.

Embodiment 3

[0044] Step (4) in Example 1: Utilize magnetron sputtering technology to prepare TiO on the etched nano-column array 2 Catalyst, instead: utilize magnetron sputtering technology to prepare metal Ni catalyst on the nano-column array that etch out, other is the same as embodiment one, will form metal Ni catalyst and be fixedly supported on SiO 2 Nanocomposite structures on nanospheres and SiNx nanopillars.

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Abstract

The invention relates to a method for preparing a three-dimensional manometer load-type catalyst, comprising the following steps of: (1) covering solution with nanosphere on a substrate evenly and drying; (2) using the nanosphere as a mask plate and adopting dry etching or wet corrosion based on different etching or corroding rate with the substrate; and (3) depositing a catalyst material. The method has simple process, low cost and is easy to be promoted and used. The scale of the catalyst carrier in the three-dimensional direction is within the nanometer magnitude and the body of the carrier has larger specific surface area so that the catalyst acts on large areas, and the catalyst materials are highly dispersed, easily recycled and can be reused.

Description

technical field [0001] The invention belongs to the field of preparation of catalyst supports, in particular to a preparation method of a three-dimensional nano-loaded catalyst. Background technique [0002] Photochemical oxidation is a new wastewater treatment technology developed in recent years because of its mild reaction conditions (normal temperature, normal pressure), strong oxidation ability and fast speed. Photochemical oxidation can be divided into four types: photodecomposition, photosensitized oxidation, photo-induced oxidation and photocatalytic oxidation. Among them, photocatalytic oxidation uses oxide semiconductor materials as catalysts, which can effectively destroy many structurally stable and refractory organic pollutants. Improve the decomposition efficiency, with the advantages of energy saving and high efficiency, complete pollutant degradation, easy operation, no secondary pollution, etc. Almost all organic substances can be completely oxidized to CO u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J35/10B01J37/00B01J37/02B01J21/06B01J23/755B01J23/52C02F1/30C02F1/72A61L9/18A62D3/10A62D3/38C02F101/30A61L101/02A62D101/20
Inventor 陈燕宋新山李洋柳建设李登新
Owner DONGHUA UNIV
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