Preparation method of Y-Sb-based composite magnetic particle optical catalyst in nuclear-shell structures

A magnetic particle, photocatalyst technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as poor removal effect and no treatment effect

Active Publication Date: 2011-11-09
山东通持环保技术有限公司
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Problems solved by technology

Due to the poor removal effect (or basically no treatment effect) of such substances by conventional biochemical treatment methods, special treatment unit processes must be used to remove them in a targeted manner

Method used

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  • Preparation method of Y-Sb-based composite magnetic particle optical catalyst in nuclear-shell structures
  • Preparation method of Y-Sb-based composite magnetic particle optical catalyst in nuclear-shell structures
  • Preparation method of Y-Sb-based composite magnetic particle optical catalyst in nuclear-shell structures

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specific Embodiment approach

[0041] 1. Powder catalytic material Y 3-x Yb x SbO 7 (0.5≤x≤1) and Y 3-x Ga x SbO 7 (0.5≤x≤1) preparation process route is as follows:

[0042] (1) Powder catalytic material Y 3-x Yb x SbO 7 Preparation of (0.5≤x≤1): Y is prepared by high-temperature solid-state sintering 3-x Yb x SbO 7 (0.5≤x≤1) photocatalytic powder material. Y with a purity of 99.99% 2 o 3 , Yb 2 o 3 and Sb 2 o 5 As a raw material, Y, Yb, Sb are Y in the atomic ratio of the molecular formula 2 o 3 , Yb 2 o 3 and Sb 2 o 5Mix thoroughly, then grind in a ball mill, the particle size of the powder reaches 1.4-1.8 microns, dry at 200±40°C for 4±1 hours, press into tablets, and put them into a high-temperature sintering furnace for firing. Raise the temperature of the furnace to 700±20°C, keep it warm for 8±2 hours, then cool down with the furnace, take out the pressed powder and crush it to a particle size of 1.3-1.6 microns, then press the powder into a tablet, put it into a high-temperat...

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Abstract

The invention relates to a preparation method of catalytic material magnetic particles in a nuclear shell structure, i.e. magnetic particles of nuclear-Y3-xYbxSbO7and nuclear-Y3-xGaxSbO7 (x is not less than 0.5 and is not more than 1). The invention adopts a pulse laser sputtering sedimentation method which comprises the following steps of: (a) preparing targets: preparing targets of Y3-xYbxSbO7 and Y3-xGaxSbO7 (x is not less than 0.5 and is not more than 1) by adopting a solid-phase sintering method; (b) selecting a substrate: selecting iron magnetic particles gama-Fe2O3, paramagnetic particles SiO2 or antiferromagnetic particles MnO as a substrate; and (c) carrying out sputtering sedimentation with pulse laser which has the main wavelength of 248 nm and the laser power density of 2-3 J / cm<2>, sedimentating films with different thicknesses on the substrate of gama-Fe2O3, SiO2 or MnO by using nitrogen as a protective atmosphere; and respectively processing the films in nitrogen or argon at 1340+ / -10 DEG C and 1340+ / -10 DEG C for 60+ / -10 min to crystallize and obtain needed magnetic composite materials for preparing the Y3-xYbxSbO7 and the Y3-xGaxSbO7.

Description

technical field [0001] The present invention relates to the preparation of a novel photocatalyst, especially powder catalytic material Y 3-x Yb x SbO 7 (0.5≤x≤1), Y 3-x Ga x SbO 7 (0.5≤x≤1) and γ-Fe with "magnetic particle core-photocatalyst shell" structure 2 o 3 (Ferromagnetic particle core)-Y 3-x Yb x SbO 7 (0.5≤x≤1) (photocatalyst shell), γ-Fe 2 o 3 -Y 3-x Ga x SbO 7 (0.5≤x≤1) (photocatalyst shell), SiO 2 (paramagnetic particle core)-Y 3-x Yb x SbO 7 (0.5≤x≤1), SiO 2 -Y 3-x Ga x SbO 7 (0.5≤x≤1), MnO (antiferromagnetic particle core)-Y 3-x Yb x SbO 7 (0.5≤x≤1), MnO-Y 3-x Ga x SbO 7 Preparation of (0.5≤x≤1). Background technique [0002] The treatment of toxic and refractory organic substances (PTS) in water has always been a difficult and hot topic in the field of water treatment. PTS has the characteristics of high risk to human body and ecological environment. Therefore, developed countries have strict control standards for such pollutants. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/843B01J23/18B01J23/34B01J37/34C23C14/35C23C14/08C02F1/30C02F1/32C01B3/04C02F101/30
CPCY02E60/364Y02E60/36
Inventor 栾景飞马坤张玲燕胡知田
Owner 山东通持环保技术有限公司
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