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Two-step method for preparing SmOCl photocatalyst

A photocatalyst, step-by-step technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., to achieve high-efficiency degradation efficiency

Inactive Publication Date: 2018-12-14
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a two-step method for preparing SmOCl photocatalyst, to overcome the above-mentioned defects in the prior art, the SmOCl material prepared by the present invention has a high degradation efficiency in solving the water pollution problem, and the material itself can be used Light energy, convert light energy into chemical energy to treat organic pollutants in water, and the material will not cause secondary pollution to the environment, it is a new type of environmentally friendly material

Method used

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  • Two-step method for preparing SmOCl photocatalyst
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  • Two-step method for preparing SmOCl photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Weigh 0.21mol of SmCl 3 ·6H 2 O, dissolved in 30ml of absolute ethanol to obtain Sm 3+ A solution with a concentration of 7 mol / L was stirred for 60 min to obtain solution A.

[0031] 2) Transfer the mixed solution A to a homogeneous hydrothermal kettle, put it into a homogeneous reactor, control the filling ratio at 30%, control the reaction temperature at 160° C., and react for 7 hours.

[0032] 3) After the reaction, the reactant was taken out, washed by deionized water and absolute ethanol for 5 times, and dried at 60° C. for 7 hours to obtain the precursor.

[0033] 4) The dried precursor was calcined in a horse boiling furnace, the calcining temperature was controlled at 400° C., and the calcining time was 70 min to obtain a photocatalyst of SmOCl.

Embodiment 2

[0035] 1) Weigh 0.255mol of SmCl 3 ·6H 2 O, dissolved in 35ml of absolute ethanol to obtain Sm 3+ A solution with a concentration of 7.3mol / L was stirred for 60 minutes to obtain solution A;

[0036] 2) Next, the mixed solution A was transferred to a homogeneous hydrothermal kettle, put into a homogeneous reactor, the filling ratio was controlled at 33%, the reaction temperature was controlled at 167° C., and the reaction was carried out for 8 hours.

[0037] 3) After the reaction is finished, the reactant is taken out, washed by deionized water and absolute ethanol for 6 times, and dried at 60° C. for 6 hours to obtain the precursor.

[0038] 4) The dried precursor was calcined in a horse boiling furnace, the calcining temperature was controlled at 500° C., and the calcining time was 75 min to obtain a photocatalyst of SmOCl.

Embodiment 3

[0040] 1) Weigh 0.28mol of SmCl 3 ·6H 2 O, dissolved in 37ml of absolute ethanol to obtain Sm 3+ A solution with a concentration of 7.50mol / L was stirred for 60 minutes to obtain solution A;

[0041] 2) Next, the mixed solution A was transferred to a homogeneous hydrothermal tank and put into a homogeneous reactor, the filling ratio was controlled at 36%, the reaction temperature was controlled at 174° C., and the reaction was carried out for 9 hours.

[0042] 3) After the reaction is finished, the reactant is taken out, washed by deionized water and absolute ethanol for 4 times, and dried at 60° C. for 5 hours to obtain the precursor.

[0043] 4) The dried precursor was calcined in a horse boiling furnace, the calcining temperature was controlled at 600° C., and the calcining time was 80 min to obtain a photocatalyst of SmOCl.

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Abstract

The invention discloses a two-step method for preparing a SmOCl photocatalyst. The method comprises the following steps: weighing SmCl3*6H2O to be dissolved into absolute ethyl alcohol so as to obtaina solution A; carrying out a homogeneous hydrothermal reaction on the solution A, washing the product after the reaction is ended, and drying to obtain a precursor; finally, calcining the precursor,so as to obtain the SmOCl photocatalyst. The SmOCl material prepared by the method disclosed by the invention has high degradation efficiency on the aspect of solving the water pollution problem, thematerial can utilize light energy, and the light energy is converted into chemical energy to treat organic pollutants in the water body. Moreover, the material does not cause secondary pollutions to the environment, and the material is a novel environmental-friendly material.

Description

technical field [0001] The invention relates to the field of photocatalyst preparation, in particular to a two-step method for preparing SmOCl photocatalyst. Background technique [0002] Today, with the increasingly developed industry and economy, problems such as energy shortage and environmental pollution have become more and more prominent. People have caused serious pollution to the environment. People urgently need the application of new energy and the development of some environmentally friendly materials. Therefore, it is urgent to find new materials for preparing clean energy and invent materials for improving environmental problems. [0003] Since their discovery, rare earth elements have attracted widespread attention of scientific and technological workers because of their special physical and chemical properties. Rare earth elements have similar electronic structures and atomic radii, and because of their unfilled 4f electric hetero orbitals, they are widely us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/10C02F1/30C02F101/30
CPCC02F1/30B01J27/10C02F2101/30B01J35/39
Inventor 殷立雄张浩繁张浩孔新刚黄剑锋房佳萌张峰
Owner SHAANXI UNIV OF SCI & TECH
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