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Preparation technology of carbon and rare earth element doped nanometer titanium dioxide ternary photocatalyst

A technology of nano-titanium dioxide and rare earth element is applied in the field of preparation technology of nano-titanium dioxide ternary photocatalyst, which can solve the problems of low utilization rate of sunlight and inability to improve catalytic efficiency and the like

Inactive Publication Date: 2015-05-06
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its utilization rate of sunlight is very low, it can only absorb ultraviolet light
In previous studies, although carbon doping can improve the photoresponse range of the catalyst, it cannot improve the catalytic efficiency.

Method used

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  • Preparation technology of carbon and rare earth element doped nanometer titanium dioxide ternary photocatalyst
  • Preparation technology of carbon and rare earth element doped nanometer titanium dioxide ternary photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Weigh 2.5 grams of lanthanum oxide with an electronic balance and place it in a beaker, then weigh 3.5 grams of concentrated nitric acid with a mass concentration of 65% and slowly pour it into the beaker containing lanthanum oxide, and stir continuously until dissolved at 50°C to prepare into a lanthanum nitrate solution, and then dry the lanthanum nitrate solution in a drying oven at 55°C to obtain a lanthanum nitrate solid;

[0024] 2) Weigh 0.5 grams of lanthanum nitrate solid and add 25 milliliters of distilled water to make an aqueous solution of lanthanum nitrate; weigh 7.5 grams of titanium tetrachloride and carefully pour it into a constant pressure dropping funnel, and then drop it at a rate of 7 seconds / drop under stirring conditions. Add it dropwise to a conical flask filled with 30 ml of absolute ethanol, and control the temperature at 20°C during the dropping process to make a transparent titanium tetrachloride absolute ethanol solution; weigh 1.5 g of a...

Embodiment 2

[0027] 1) Weigh 4.5 grams of yttrium oxide with an electronic balance and put it in a beaker, then weigh 3.25 grams of concentrated nitric acid with a mass concentration of 65% and slowly pour it into the beaker filled with yttrium oxide, and stir continuously at 50°C until it dissolves. into yttrium nitrate solution, and then dry the yttrium nitrate solution in a drying oven at 55°C to obtain yttrium nitrate solid;

[0028] 2) Weigh 0.35 grams of yttrium nitrate solid and add 25 milliliters of distilled water to make an aqueous solution of yttrium nitrate; weigh 8.5 grams of titanium tetrachloride and carefully pour it into a constant pressure dropping funnel, then drop it at a rate of 7 seconds / drop under stirring conditions. Add dropwise to a conical flask filled with 30 ml of absolute ethanol, and control the temperature at 20°C during the dropping process to make a transparent titanium tetrachloride absolute ethanol solution; weigh 1.35 g of ammonium carbonate and add 6 ml...

Embodiment 3

[0031] 1) Weigh 3.5 grams of europium oxide with an electronic balance and place it in a beaker, then weigh 2.75 grams of concentrated nitric acid with a mass concentration of 65% and slowly pour it into the beaker containing europium oxide, and stir continuously until dissolved at 50 ° C to prepare into a europium nitrate solution, and then dry the europium nitrate solution in a drying oven at 40°C to obtain a europium nitrate solid;

[0032] 2) Weigh 0.4 grams of europium nitrate solid and add 30 milliliters of distilled water to make an aqueous solution of europium nitrate; weigh 9.5 grams of titanium tetrachloride and carefully pour it into a constant pressure dropping funnel, and then drop it at a rate of 10 seconds / drop under stirring conditions. Add dropwise to a conical flask filled with 30 ml of absolute ethanol, and control the temperature at 25°C during the dropping process to make a transparent titanium tetrachloride absolute ethanol solution; weigh 5 grams of ammon...

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PUM

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Abstract

The invention discloses a preparation technology of a carbon and rare earth element doped nanometer titanium dioxide ternary photocatalyst. The preparation technology comprises the following steps: respectively preparing rare earth brine solution, titanium tetrachloride absolute ethyl alcohol and ammonium carbonate solution; adding the rare earth brine solution in a three-necked bottle filled with the mixed solution, stirring evenly and adding the titanium tetrachloride absolute ethyl alcohol and ammonium carbonate solution, stirring evenly, adding the active carbon, stirring evenly, aging and drying the mixture at room temperature, grinding the obtained solid and calcining for preparing the carbon and rare earth element doped nanometer titanium dioxide ternary photocatalyst. The carbon and rare earth element doped nanometer titanium dioxide ternary photocatalyst has high effect photocatalytic degradation function to the pollutants, especially organic pollutants.

Description

technical field [0001] The invention relates to a preparation process of a catalyst, in particular to a preparation process of a nano-titanium dioxide ternary photocatalyst doped with carbon and rare earth elements. Background technique [0002] Photocatalytic degradation technology is a new type of pollutant treatment technology with broad market prospects. Nano-titanium dioxide is an excellent photocatalyst with the best application potential. It has the characteristics of non-toxicity, high activity, low cost, resistance to ultraviolet light corrosion, strong acid resistance, strong alkali resistance and strong oxidant resistance. However, its utilization rate of sunlight is very low and it can only absorb ultraviolet light. In previous studies, although carbon doping can improve the photoresponse range of the catalyst, it cannot improve the catalytic efficiency. Contents of the invention [0003] The purpose of the present invention is to provide a preparation proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22
Inventor 刘保健杨军王新玲陆洪林高玉刚刘苗杜经武于凯烁苏莹王乾武祯祯吴思怡
Owner SHAANXI UNIV OF SCI & TECH
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