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A method for photocatalytic oxidation of xylose using indium sulfide/nickel-iron hydrotalcite composite film

A photoelectric catalysis, hydrotalcite technology, applied in electrodes, electrolysis components, electrolysis process and other directions, can solve the problem of low reaction efficiency of photogenerated electrons and holes, and achieve the goal of promoting the separation of photogenerated electrons and holes, improving oxidation, excellent The effect of photocatalytic oxidation performance

Active Publication Date: 2021-02-02
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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  • A method for photocatalytic oxidation of xylose using indium sulfide/nickel-iron hydrotalcite composite film
  • A method for photocatalytic oxidation of xylose using indium sulfide/nickel-iron hydrotalcite composite film

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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 photoelectric catalysis, and specifically relates to a method for photocatalytically oxidizing xylose by using an indium sulfide / nickel-iron hydrotalcite composite film: using the indium sulfide / nickel-iron hydrotalcite composite film loaded on conductive glass as a photoanode , with a platinum sheet electrode as a counter electrode and a saturated calomel electrode as a reference electrode, under the conditions of light and bias, the xylose solution containing the supporting electrolyte in the electrolytic cell was subjected to photoelectric catalytic oxidation to prepare xylonic acid. Under the irradiation of sunlight, ultraviolet light and visible light, xylose can be rapidly oxidized to xylonic acid, which has the advantages of simple process, low cost and suitable for large-scale production, and has broad application prospects.

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 Patents(China)
IPC IPC(8): C25B3/07C25B3/23C25B3/21C25B11/091
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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