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Method for preparing ternary visible photocatalytic water splitting material with biologically-grading porous structure

A technology of hierarchical porous and biomaterials, applied in oxygen preparation, chemical instruments and methods, chemical/physical processes, etc., to achieve simple process, good controllability, and improve the efficiency of photolysis of water

Inactive Publication Date: 2013-09-11
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] So far, the oxides prepared using biological templates are all binary oxides, but the biomimetic preparation of ternary oxides with better visible light catalytic activity has not been reported.

Method used

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  • Method for preparing ternary visible photocatalytic water splitting material with biologically-grading porous structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In the first step, put the butterfly wing of Paris emerald phoenix into 6wt% HCl solution for 24 hours to dissolve the minerals that are not easy to be removed by sintering, and then wash it with distilled water. Then put it into 10wt% NaOH solution and treat it at 60° C. for 3 hours to dissolve most of the chitin. The butterfly wings treated in this way are taken out, rinsed with distilled water, and dried for later use.

[0025] The second step is the preparation of the precursor solution. Diethylenetriaminepentaacetic acid, bismuth oxide, and ammonium tungstate were dissolved in hot deionized water at a molar ratio of 40:1:1, and stirred at 50°C until it became a colorless and transparent precursor solution.

[0026] The third step is to immerse the treated butterfly wings in the prepared precursor solution at 50°C for 12 hours;

[0027] In the fourth step, the butterfly wings are taken out, washed several times with deionized water, dried, and then fired to remove...

Embodiment 2

[0030] In the first step, put the butterfly wing of Paris emerald phoenix into 6wt% HCl solution for 24 hours to dissolve the minerals that are not easy to be removed by sintering, and then wash it with distilled water. Then put it into 10wt% NaOH solution and treat it at 60° C. for 3 hours to dissolve most of the chitin. The butterfly wings treated in this way are taken out, rinsed with distilled water, and dried for later use.

[0031] The second step is the preparation of the precursor solution. Diethylenetriaminepentaacetic acid, bismuth oxide and ammonium molybdate were dissolved in hot deionized water in a molar ratio of 40:5:1, and stirred at 70° C. until it became a colorless and transparent precursor solution.

[0032] The third step is to immerse the treated butterfly wings in the prepared precursor solution at 70°C for 24 hours;

[0033] In the fourth step, the butterfly wings are taken out, washed several times with deionized water, dried, and then fired to remov...

Embodiment 3

[0036] In the first step, put the butterfly wing of Paris emerald phoenix into 6wt% HCl solution for 24 hours to dissolve the minerals that are not easy to be removed by sintering, and then wash it with distilled water. Then put it into 10wt% NaOH solution and treat it at 60° C. for 3 hours to dissolve most of the chitin. The butterfly wings treated in this way are taken out, rinsed with distilled water, and dried for later use.

[0037] The second step is the preparation of the precursor solution. Diethylenetriaminepentaacetic acid, bismuth oxide and ammonium iodate were dissolved in hot deionized water at a molar ratio of 40:10:1, and stirred at 90° C. until it became a colorless and transparent precursor solution.

[0038]The third step is to immerse the treated butterfly wings in the prepared precursor solution at 90°C for 48 hours;

[0039] In the fourth step, the butterfly wings are taken out, washed several times with deionized water, dried, and then roasted to remove...

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Abstract

The invention relates to a method for preparing a ternary visible photocatalytic water splitting material with a biologically-grading porous structure. According to the preparation method, a biological multilayer three-dimensional fine structure is used as a template; by the design and preparation of a precursor solution and by the utilization of a penetration immersion method, different chemical reactivities of biochemical components is controlled and the ternary visible photocatalytic water splitting material with the biologically-grading porous structure is prepared through surface treatment and chemical modification. As the prepared catalyst has a special appearance, the catalytic performance is greatly raised. The ternary visible photocatalytic water splitting material with the biologically-grading porous structure has a wide application prospect in the aspects of organic matter pollution treatment, photocatalysis and water splitting.

Description

technical field [0001] The invention relates to a method for a ternary visible light water-splitting material, in particular to a preparation method for a ternary photo-splitting water material with a biological hierarchical porous structure. Background technique [0002] In the process of designing materials and their structures, the adaptive structure and performance of biological systems in nature have given people a lot of inspiration. Scientists have discovered that in the long-term evolution and development process of animals, plants and microorganisms in nature, they form a hierarchical structure from molecular to nanometer to macroscopic, and are highly ordered on every scale, thus forming various unique structural configurations and excellent performance. The excellent structures and excellent characteristics of these various organisms in nature have brought endless inspiration and inspiration to human beings in the process of continuously manufacturing and updatin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J35/10B01J23/31B01J23/28B01J27/06C01B13/02
Inventor 朱申敏姚帆殷超杨庆庆张荻
Owner SHANGHAI JIAOTONG UNIV
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