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Method for photoelectrocatalytic oxidation of xylose by utilizing indium sulfide/ferronickel hydrotalcite composite film

A photoelectric catalysis, hydrotalcite technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problem of low reaction efficiency of photogenerated electrons and holes, and achieve to promote the separation of photogenerated electrons and holes, improve oxidation, excellent The effect of photocatalytic oxidation performance

Active Publication Date: 2019-06-21
山东济清科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of current xylose oxidation technology, the present invention proposes a method for preparing xylose acid by oxidizing xylose using photoelectric catalysis technology. The shortcomings of high recombination rate of photogenerated electrons and holes and low reaction efficiency have the advantages of simple process, low cost and suitable for large-scale production

Method used

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  • Method for photoelectrocatalytic oxidation of xylose by utilizing indium sulfide/ferronickel hydrotalcite composite film
  • Method for photoelectrocatalytic oxidation of xylose by utilizing indium sulfide/ferronickel hydrotalcite composite film
  • Method for photoelectrocatalytic oxidation of xylose by utilizing indium sulfide/ferronickel hydrotalcite composite film

Examples

Experimental program
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Effect test

Embodiment 1

[0032] (1) Add 5.7 parts of citric acid monohydrate to 20 parts of deionized water, after fully dissolving, add 1 part of indium chloride, stir and dissolve to form an indium citrate complex solution. Dissolve 1.36 parts of thioacetamide in 20 parts of deionized water to form a thioacetamide solution. The thioacetamide solution was slowly added dropwise to the indium citrate complex solution under stirring to form a mixed solution, and transferred to the reaction kettle, and at the same time, a 10×30 mm FTO conductive glass cleaned with acetone and deionized water was placed vertically , sealed and reacted at 80° C. for 8 hours to obtain a conductive glass deposited with an indium sulfide film. The thickness of the indium sulfide film is 0.8-1 micron, and it is composed of cubic phase indium sulfide crystals with a particle size of 100-500 nm and sporadically distributed cubic phase indium sulfide crystals with a particle size of 1-2 microns;

[0033] (2) Dissolve 2.16 parts ...

Embodiment 2

[0036] (1) Add 5.7 parts of citric acid monohydrate to 20 parts of deionized water, after fully dissolving, add 1 part of indium chloride, stir and dissolve to form an indium citrate complex solution. Dissolve 1.36 parts of thioacetamide in 20 parts of deionized water to form a thioacetamide solution. The thioacetamide solution was slowly added dropwise to the indium citrate complex solution under stirring to form a mixed solution, and transferred to the reaction kettle, and at the same time, a 10×30 mm FTO conductive glass cleaned with acetone and deionized water was placed vertically , sealed and reacted at 80° C. for 8 hours to obtain a conductive glass deposited with an indium sulfide film. The thickness of the indium sulfide film is 0.8-1 micron, and it is composed of cubic phase indium sulfide crystals with a particle size of 100-500 nm and sporadically distributed cubic phase indium sulfide crystals with a particle size of 1-2 microns;

[0037] (2) Dissolve 2.16 parts ...

Embodiment 3

[0040] (1) Add 5.7 parts of citric acid monohydrate to 20 parts of deionized water, after fully dissolving, add 1 part of indium chloride, stir and dissolve to form an indium citrate complex solution. Dissolve 1.36 parts of thioacetamide in 20 parts of deionized water to form a thioacetamide solution. The thioacetamide solution was slowly added dropwise to the indium citrate complex solution under stirring to form a mixed solution, and transferred to the reaction kettle, and at the same time, a 10×30 mm FTO conductive glass cleaned with acetone and deionized water was placed vertically The sheet was sealed and reacted at 80°C for 8 hours to obtain a conductive glass deposited with an indium sulfide film. The thickness of the indium sulfide film is 0.8-1 micron, and it is composed of cubic phase indium sulfide crystals with a particle size of 100-500 nm and sporadically distributed cubic phase indium sulfide crystals with a particle size of 1-2 microns;

[0041] (2) Dissolve 2...

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Abstract

The invention belongs to the field of photoelectrocatalysis, and particularly relates to a method for photoelectrocatalytic oxidation of xylose by utilizing an indium sulfide / ferronickel hydrotalcitecomposite film. The method comprises the following steps: taking the indium sulfide / ferronickel hydrotalcite composite film loaded on conductive glass as a photoanode, taking a platinum sheet electrode as a counter electrode, taking a saturated calomel electrode as a reference electrode, and carrying out photoelectrocatalytic oxidation on a xylose solution containing a supporting electrolyte in anelectrolytic cell under the conditions of illumination and applied bias voltage to prepare xylonic acid. The xylose can be rapidly oxidized into the xylonic acid under the irradiation of sunlight, ultraviolet light and visible light, and the method has the advantages of simple process, low cost, suitability for large-scale production, and wide application prospect.

Description

technical field [0001] The invention belongs to the field of photoelectric catalysis, and in particular relates to a method for photocatalytically oxidizing xylose by using an indium sulfide / nickel-iron hydrotalcite composite film. Background technique [0002] Making full use of renewable biomass resources such as agricultural and forestry wastes to produce green chemical products in order to achieve sustainable development of the chemical industry has received more and more attention. Hemicellulose is the second largest component of agricultural and forestry wastes except cellulose, and its xylose content in agricultural and forestry wastes can be as high as 18-30%. Agricultural wastes such as corn cobs, straws, etc. Hydrolysis of hemicellulose in xylose can produce xylose, and further oxidation of xylose can produce xylonic acid. Xylonic acid is one of the most promising xylose conversion products. As a multifunctional platform compound, it can be applied in various fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/02C25B11/04C25B11/06C25B3/23
Inventor 刘温霞李真真于得海李国栋宋兆萍王慧丽
Owner 山东济清科技服务有限公司
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