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Visible-light photocatalytic nano titanium dioxide floating type water purification material

A nano-titanium dioxide, water purification technology, applied in the direction of light water/sewage treatment, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of no visible light activity, reduced activity, high energy consumption, etc., and achieve continuous and efficient degradation and purification ability, prevent water pollution, no secondary pollution effect

Inactive Publication Date: 2014-05-28
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some progress has been made in the research of supported titanium dioxide, which has solved the problem of fixed recovery of titanium dioxide. However, due to the complexity of the commonly used sol-gel loading process, the activity after loading is greatly reduced, and there is no visible light activity. Ultraviolet lamps are required, which consumes a lot of energy. In sewage treatment, the light utilization efficiency is lower, and the catalyst can only perform advanced treatment on the polluted water body, and it is not durable, so it still faces many limitations in practical use

Method used

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  • Visible-light photocatalytic nano titanium dioxide floating type water purification material
  • Visible-light photocatalytic nano titanium dioxide floating type water purification material
  • Visible-light photocatalytic nano titanium dioxide floating type water purification material

Examples

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Embodiment 1

[0020] Using porous lightweight clay particles as the carrier, mix the dry cement powder and the rod-shaped nano-titanium dioxide with visible light catalytic activity at a ratio of 8:2, and then mix it with a water-cement ratio of 0.4~1.5:1. The surface of the porous clay particle carrier realizes the loading of rod-shaped nano-titanium dioxide with visible light catalytic activity, and then hardens and dries in an environment with an air humidity greater than 80%.

Embodiment 2

[0022] Using light fly ash material as the carrier, mix water glass and rod-shaped nano-titanium dioxide with visible light catalytic activity in a ratio of 7:3, and then use light fly ash material by impregnation method The prepared porous and lightweight particles are used as the carrier surface to realize nano-TiO 2 load, and then harden and dry in an environment with air humidity greater than 50%.

Embodiment 3

[0024] Using porous lightweight particles prepared from foamed plastic materials as a carrier, mix pure acrylic emulsion and visible light catalytically active rod-shaped nano-titanium dioxide at a ratio of 5:5, and then use impregnation method to prepare foamed plastic materials. Porous and lightweight particles realize nano-TiO on the surface of the carrier 2 load, and then harden and dry in an environment with air humidity less than 50%.

[0025] The visible light photocatalytic nano-titanium dioxide floating water purification material of the present invention can be directly used in water sources, and at the same time, different sizes can be designed according to the application field, and different quantities can be designed and assembled to have a certain ornamental appearance. For example, 1. Used in household fish tanks can effectively prevent water pollution and continuously purify water quality, avoid troubles and waste of water resources caused by frequent water ch...

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Abstract

A visible-light photocatalytic nano titanium dioxide floating type water purification material is characterized by comprising carriers and rod-like nano titanium dioxide with the visible-light catalytic activity, wherein the carriers are made of lightweight porous materials and prepared into multiple sizes and shapes through a molded standard polyhedron; the rod-like nano titanium dioxide wraps the carriers through a binder; and the mass ratio of the binder to the rod-like nano titanium dioxide is (4-9):(1-6). The final material density control interval is 0.90-0.99 g / cm<3>.

Description

technical field [0001] The invention relates to a titanium dioxide visible light catalyst material for preventing water body pollution and purifying water quality, especially a floating titanium dioxide visible light photocatalytic water quality purification material designed into various sizes and shapes by molding a standard polyhedron. Background technique [0002] Titanium dioxide photocatalytic degradation of organic pollutants in water has the advantages of thorough degradation, non-selective degradation, and environmental friendliness. In recent years, the improvement of visible light response intensity of titanium dioxide and the development of loading technology have made it possible for titanium dioxide photocatalytic technology to be used in large-scale industrial sewage treatment. At present, some progress has been made in the research of supported titanium dioxide, which has solved the problem of fixed recovery of titanium dioxide. However, due to the com...

Claims

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Application Information

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IPC IPC(8): B01J21/06C02F1/30
Inventor 李道荣李盼李申江秀明万东锦张洋李宗慧
Owner HENAN UNIVERSITY OF TECHNOLOGY