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Preparation method of Co-doped nano rod-like CuWO4 photoanode film

A nanorod-shaped, photoanode technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., to achieve the effect of low raw material cost, simple and feasible preparation method, and good photoelectric catalytic hydrogen production performance

Inactive Publication Date: 2019-02-01
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the use of Co doping on CuWO 4 Photocatalytic modification has not been reported yet, and the application of this new material in photocatalytic water splitting provides a new idea for photocatalytic hydrogen production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The embodiment of the present invention discloses a Co-doped nanorod CuWO 4 A method for preparing a photoanode film, comprising the steps of:

[0018] Add 2.96g of ammonium metatungstate and 0.17g of cupric chloride into 50mL of absolute ethanol, stir magnetically at room temperature for 11min, and then follow Co 2+ and Cu 2+ The molar ratio of 0.02 / 0.94 was added to 0.009g cobalt nitrate, and the transparent Co-doped CuWO was obtained after stirring for 3h. 4 Precursor sol;

[0019] Put the cleaned ITO conductive glass on Co-doped CuWO at a speed of 1mm / s 4 After dipping in the precursor sol for 16s, pull it up, put it in an oven at 80°C to dry; then perform repeated coating, and dry the ITO conductive glass that has completed the second coating in an oven at 80°C for 1.5h;

[0020] The dried Co-doped CuWO 4 The film was annealed in a muffle furnace at 500 °C for 2 h to obtain Co-doped nanorod-shaped CuWO 4 Photoanodic film.

Embodiment 2

[0022] The embodiment of the present invention discloses a Co-doped nanorod CuWO 4 A method for preparing a photoanode film, comprising the steps of:

[0023] Add 2.96g of ammonium metatungstate and 0.17g of cupric chloride into 50mL of absolute ethanol, stir magnetically at room temperature for 13min, and then follow Co 2+ and Cu 2+ The molar ratio of 0.03 / 0.95 was added to 0.012g cobalt nitrate, and the transparent Co-doped CuWO was obtained after stirring for 4h. 4 Precursor sol;

[0024] Put the cleaned ITO conductive glass on Co-doped CuWO at a speed of 1mm / s 4 After dipping in the precursor sol for 21s, pull it up, put it in an oven at 80°C to dry; then perform repeated coating, and dry the ITO conductive glass that has completed the second coating in an oven at 80°C for 2 hours;

[0025] The dried Co-doped CuWO 4 The film was annealed in a muffle furnace at 520 °C for 2 h to obtain Co-doped nanorod-shaped CuWO 4 Photoanodic film.

Embodiment 3

[0027] The embodiment of the present invention discloses a Co-doped nanorod CuWO 4 A method for preparing a photoanode film, comprising the steps of:

[0028] Add 2.96g of ammonium metatungstate and 0.17g of cupric chloride into 50mL of absolute ethanol, stir magnetically at room temperature for 14min, and then follow Co 2+ and Cu 2+ The molar ratio of 0.06 / 0.98 was added to 0.015g of cobalt nitrate, and the stirring was continued for 3.5h to obtain transparent Co-doped CuWO 4 Precursor sol;

[0029] Put the cleaned ITO conductive glass on Co-doped CuWO at a speed of 1mm / s 4 After dipping in the precursor sol for 28s, pull it up, put it in an oven at 80°C to dry; then perform repeated coating, and dry the ITO conductive glass that has completed the second coating in an oven at 80°C for 3.5 hours;

[0030] The dried Co-doped CuWO 4 The film was annealed in a muffle furnace at 545 °C for 2 h to obtain Co-doped nanorod-shaped CuWO 4 Photoanodic film.

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Abstract

The invention discloses a preparation method of a Co-doped nano rod-like CuWO4 photoanode film. The preparation method includes the following steps that (1) ammonium metatungstate and copper chlorideare added into absolute ethyl alcohol, cobalt nitrate is added after magnetic stirring is carried out, the materials continue to be stirred, and transparent Co-doped CuWO4 precursor sol is obtained; (2) completely-washed ITO conducting glass is soaked in the precursor sol prepared in the step (1), then lifted and dried and then coated with a film again, the ITO conducting glass obtained after secondary film coating continues to be dried, and a dried Co-doped CuWO4 film is obtained; and (3) the film obtained in the step (2) is annealed, and the Co-doped nano rod-like CuWO4 photoanode film is obtained. The preparation method has the beneficial effects that the preparation method is simple and feasible, the raw material cost is low, the photoelectrocatalysis hydrogen producing performance isgood, and light currents during photoelectrocatalysis hydrogen producing are obviously increased.

Description

technical field [0001] The invention belongs to the technical field of photoelectric catalytic materials, in particular to a Co-doped nanorod-shaped CuWO 4 Preparation method of photoanode thin film. Background technique [0002] Environmental pollution is increasing day by day, seriously endangering human health, so addressing the sharply increasing energy demand in an environmentally friendly, sustainable, scalable and equitable manner is one of the most critical challenges we face today. Solar energy is an inexhaustible, sustainable resource that can be harnessed to meet our growing demand for clean and renewable energy. Notably, photocatalytic water splitting is a very promising technology that utilizes semiconductor materials to harvest sunlight to generate hydrogen and oxygen, thus providing a simple route to convert solar energy into storable chemical energy. This process enables the use of solar energy and water without pollutants. Therefore, the use of semiconduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B1/04
CPCC25B1/04C25B1/55C25B11/091Y02E60/36
Inventor 刘志华周苗刘志锋
Owner TIANJIN CHENGJIAN UNIV
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