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Method for preparing high efficiency photocatalyst of nickel oxide supported tantalate

A technology of photocatalyst and tantalate, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc. Large diameter and other problems, to achieve the effect of high photocatalytic performance, low reaction temperature, and less structural defects

Inactive Publication Date: 2009-12-16
QINGDAO UNIV OF SCI & TECH
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the technical problems of complex preparation process, large particle size, many defects, high energy consumption, and low photocatalytic efficiency in the preparation of tantalate photocatalysts, and provide a nickel oxide-loaded nano-tantalum under mild conditions. Preparation method of acid salt

Method used

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  • Method for preparing high efficiency photocatalyst of nickel oxide supported tantalate
  • Method for preparing high efficiency photocatalyst of nickel oxide supported tantalate
  • Method for preparing high efficiency photocatalyst of nickel oxide supported tantalate

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Embodiment 1

[0021] The hydrothermal preparation method of nanometer sodium tantalate photocatalyst of the present invention is as follows:

[0022] (1) Add 0.4420g Ta 2 o 5 and 0.6gNaOH to make sodium hydroxide excessive, then add 25ml of distilled water to dissolve;

[0023] (2) Put the polytetrafluoroethylene liner in an ultrasonic cleaner for ultrasonic dispersion for 15 minutes, so that tantalum oxide is evenly dispersed in the sodium hydroxide solution;

[0024] (3) Put the liner into a stainless steel reaction kettle, and put it in an oven for 12 hours at a constant temperature of 140°C;

[0025] (4) Naturally cool to room temperature, take out the inner tank of the reaction kettle, pour the supernatant liquid, pour the remaining slurry into the sand core funnel, filter the powder with vacuum suction, wash with a large amount of distilled water, remove excess NaOH, until washed out liquid is neutral;

[0026] (5) Dry the sample in an oven at 80°C for 6 hours, and collect the sam...

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Abstract

The invention provides a method for preparing a high efficiency photocatalyst of nickel oxide supported tantalate, comprising the following steps: (1) uniformly dispersing tantalum oxide into excessive aqueous alkali and placing the mixture into a reaction kettle; (2) keeping the reaction kettle for a period of time at the set temperature to ensure full hydrothermal reaction; (3) after the hydrothermal reaction, fully washing and filtering the product in the reaction kettle until eluate is neutral, and preparing tantalate nano powder after drying; (4) uniformly dispersing certain amount of the tantalate nano powder into proper amount of nickel nitrate solution and evaporating the mixed solution at the constant temperature to obtain pressed powder; (5) putting ground pressed powder into a Muffle furnace for calcining to obtain the final product. The method adopts cheap raw materials and has simple equipment and process. The prepared photocatalyst of the tantalate has few structural defects, small grain size and good dispersibility, and the tantalate is endowed with good photocatalytic activity.

Description

technical field [0001] The present invention relates to a method for preparing a high-efficiency nano-tantalate photocatalyst, in particular to a method for nickel oxide-loaded nano-tantalate photocatalyst, specifically using tantalum oxide as a raw material in sodium hydroxide and / or potassium hydroxide Nanoscale, tantalate powder with good crystallinity is hydrothermally synthesized in solution, and then nickel oxide is loaded by impregnation method to improve its photocatalytic effect. belongs to the field of nanotechnology. Background technique [0002] With the development of the printing and dyeing industry, organic pollutants such as dyes and dye solvents have become a major class of environmental pollutants. Traditional dye wastewater treatment methods only use physical methods to transfer organic matter, but the dye molecules themselves do not decompose, so these degradation methods cannot achieve real removal; in addition, chemical or biological methods can also b...

Claims

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Application Information

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IPC IPC(8): B01J23/847B01J37/08C02F1/30
CPCY02W10/37
Inventor 李霞臧金玲
Owner QINGDAO UNIV OF SCI & TECH
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