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Nano titanium dioxide composite material applicable to wastewater treatment

A technology of nano-titanium dioxide and composite materials, applied in the field of nano-titanium dioxide composite materials, can solve the problems of mixed loss of titanium dioxide, difficult to handle quantity, low quantum efficiency, etc., and achieve the effect of improving photocatalytic activity and light utilization rate

Inactive Publication Date: 2016-06-29
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, the quantum efficiency of nano-titanium dioxide is low, and it is difficult to treat large quantities and high-concentration wastewater
Thirdly, the application of nano-titanium dioxide in wastewater treatment is generally treated by suspension dispersion method, and nano-titanium dioxide is easy to mix and lose titanium dioxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the nano-titanium dioxide composite material used in wastewater treatment according to the present invention, the ratio of a) nano-titanium dioxide to b) the mass fraction of the adsorptive porous material is 1:5.

[0019] Graphene is selected as the adsorptive porous material.

[0020] Described nano-titanium dioxide modified material selects La 3+ , Ni, La 3+ The loading amount of Ni is 0.5% of the mass of nano-titanium dioxide, and the loading amount of Ni is 0.5% of the mass of nano-titania.

Embodiment 2

[0022] In the nano-titanium dioxide composite material used in wastewater treatment according to the present invention, the ratio of a) the nano-titanium dioxide to b) the mass fraction of the adsorptive porous material is 1:4.

[0023] The adsorbent porous material is selected from graphene and activated carbon.

[0024] The nano-titanium dioxide modified material is selected from Ag, and its loading amount is 0.3% of the mass of the nano-titanium dioxide.

Embodiment 3

[0026] In the nano-titanium dioxide composite material used in wastewater treatment according to the present invention, the ratio of a) nano-titanium dioxide to b) adsorptive porous material is 2:25.

[0027] Attapulgite, bentonite and zeolite are selected as the adsorptive porous material.

[0028] The nano-titanium dioxide modified material is Cr, and its load is 0.5% of the mass of the nano-titanium dioxide.

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Abstract

The invention discloses nano titanium dioxide composite material applicable to wastewater treatment. The nano titanium dioxide composite material comprises nano titanium dioxide, absorptive porous material and nano titanium dioxide-modified material, wherein the nano titanium dioxide-modified material comprises inert metal Ag, Au and Pt or / and transition metal ions Cr, Mn, Fe, Co, Ni and Cu or / and rare earth metal ions La3+, Y3+ and Eu3+ or / and Fe-Sn and Fe-La. The nano titanium dioxide composite material has the advantages that the composite material is composited by the nano titanium dioxide-modified material, the nano titanium dioxide and the absorptive porous material, the photocatalytic activity and light utilization rate of the nano titanium dioxide are increased, the utilization rate of the nano titanium dioxide is increased, and the composite material can evidently decompose pollutants in wastewater.

Description

technical field [0001] The invention relates to a nano-titanium dioxide composite material, in particular to a nano-titanium dioxide composite material applied to wastewater treatment. Background technique [0002] As a semiconductor photocatalyst, there are key technical problems in the practical application of nano-titanium dioxide, which restricts its large-scale industrial application. First of all, the utilization rate of solar energy is low, and the efficiency of photocatalysts that directly use sunlight as a light source to degrade organic pollution is very low. To treat wastewater on a large scale, it is necessary to expand the lighting area to increase the lighting intensity, or use artificial ultraviolet light sources. It is a great problem in terms of design, manufacture and operating costs. Therefore, expanding the response spectrum range of semiconductor photocatalysis, so that it has higher photocatalytic activity in the visible light region, is the direction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/12B01J20/16B01J20/14B01J20/10C02F1/28C02F1/30B01J23/83B01J23/50B01J23/26B01J23/10B01J23/89B01J23/66B01J23/835
CPCB01J20/103B01J20/12B01J20/14B01J20/165B01J20/20B01J20/205C02F1/281C02F1/30B01J23/10B01J23/26B01J23/50B01J23/66B01J23/83B01J23/835B01J23/8913C02F2103/30C02F2103/28B01J2220/42B01J35/39Y02W10/37
Inventor 郭琴
Owner GUANGXI UNIV
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