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

A photoelectric catalysis, nickel-cobalt-aluminum technology, applied in electrodes, electrolysis components, electrolysis processes, etc., can solve the problems of low reaction efficiency of photogenerated electrons and holes, and achieve the effect of promoting separation, low cost and simple process

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

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Problems solved by technology

[0004] Aiming at the deficiencies of the current xylose oxidation technology, the present invention proposes a method for preparing xylose acid by oxidizing xylose using photoelectric catalysis technology. This method not only has the advantages of electrolytic oxidation, but also overcomes the problem of photocatalytic The disadvantages 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-cobalt-aluminum hydrotalcite composite film
  • A method for photocatalytic oxidation of xylose using indium sulfide/nickel-cobalt-aluminum hydrotalcite composite film

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Experimental program
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Effect test

Embodiment 1

[0031] (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, which was transferred to the reaction kettle, and at the same time, a 10×30 mm FTO conductive electrode cleaned with acetone and deionized water was placed vertically. Glass, sealed and reacted at 80±5°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 indium sulfide crystals with a particle size of 50-500 nm and scattered distribution of particle size of 1-2 microns;

[0032] (2) Dissolve 1.09 parts of nickel nitrate hexahydrate, 1....

Embodiment 2

[0035] (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 indium sulfide crystals with a particle size of 50-500 nanometers and sporadically distributed particle sizes of 1-2 microns;

[0036](2) Dissolve 1.09 parts of nickel nitrate hexahydrate, 1...

Embodiment 3

[0039] (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 1.5 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 7 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 indium sulfide crystals with a particle size of 50-500 nanometers and sporadically distributed particle sizes of 1-2 microns;

[0040] (2) Dissolve 1.09 parts of nickel nitrate hexahydrate,...

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Abstract

The invention belongs to the field of photoelectric catalysis, and relates to a method for photocatalytically oxidizing xylose by using an indium sulfide / nickel-cobalt-aluminum hydrotalcite composite film: using conductive glass loaded with an indium sulfide / nickel-cobalt-aluminum hydrotalcite composite film as a photoanode , using a platinum plate electrode as a counter electrode and a saturated calomel electrode as a reference electrode, under the conditions of light and bias voltage, the xylose solution containing electrolyte in the electrolytic cell is subjected to photocatalytic oxidation to obtain xylonic acid. Under the irradiation of simulated sunlight, the oxidation rate of xylose can be accelerated, which is beneficial to convert xylose into xylonic acid, and has the advantages of simple process, low cost, high conversion rate and suitable for large-scale production.

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-cobalt-aluminum hydrotalcite composite film. Background technique [0002] Biomass is not only the most abundant substance on the earth, but also has the advantages of renewability, recyclability, biocompatibility and sustainability. environmental pollution. With the increasing emphasis on environmental protection, the effective utilization of biomass has received more and more attention. Hemicellulose is one of the three major components of biomass. The hemicellulose of gramineous plants is mainly xylosaccharides. The hemicellulose in agricultural wastes such as corn cobs and straws can be hydrolyzed to produce wood Sugar, xylose can be further oxidized to produce xylonic acid. Xylose acid is one of the important metabolites of vitamin C, which plays a crucial role in regulati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B3/07C25B3/21C25B3/23C25B11/091C25B9/65
Inventor 刘温霞李真真李国栋于得海王慧丽宋兆萍
Owner 山东济清科技服务有限公司
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