Carbon-doped titanium dioxide polarized homojunction photoelectrocatalysis anode material and preparation method thereof

A photoelectric catalysis, titanium dioxide technology, applied in photovoltaic power generation, electrodes, electrolysis components, etc., can solve the problems of large overpotential and low catalytic efficiency, and achieve the effects of low cost, simple and convenient processing method, and excellent performance.

Pending Publication Date: 2022-08-05
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Photoelectrocatalysis occurs on the surface, and the catalytic efficiency is often not high. It needs to overcome resistance such as solution resistance and requires a large overpotential

Method used

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  • Carbon-doped titanium dioxide polarized homojunction photoelectrocatalysis anode material and preparation method thereof
  • Carbon-doped titanium dioxide polarized homojunction photoelectrocatalysis anode material and preparation method thereof
  • Carbon-doped titanium dioxide polarized homojunction photoelectrocatalysis anode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Weigh 20 milliliters of deionized water and 20 milliliters of hydrochloric acid, put them into a beaker and stir, after mixing evenly, dropwise add 600 microliters of titanium isopropoxide solution, add 0.01 g of carbon powder, and stir well to obtain solution for hydrothermal reaction. Transfer the reaction solution to the reactor, and then carry out the hydrothermal reaction. The transfer volume of the hydrothermal reaction solution needs to be checked and not to be completely submerged in the conductive glass. Reserve an unsubmerged part of 2 mm × 10 mm. The temperature of the hydrothermal reaction is 160 degrees Celsius. The time is 6 hours. The reacted samples need to be washed with ethanol and deionized water respectively and dried. The high temperature sintering temperature of the sample is 430 degrees Celsius, the high temperature sintering time is 45 minutes, and the heating rate of the sample sintering is controlled at 2 degrees Celsius / min.

[0052] The vol...

Embodiment 2

[0060] Weigh 25 ml of deionized water and 25 ml of hydrochloric acid, put them into a beaker and stir, after mixing evenly, dropwise add 750 microliters of titanium isopropoxide solution, add 0.01 g of carbon powder, and stir evenly to obtain solution for hydrothermal reaction. Transfer the reaction solution to the reactor, and then carry out the hydrothermal reaction. The transfer volume of the hydrothermal reaction solution needs to be checked and not to be completely submerged in the conductive glass. Reserve an unsubmerged part of 2 mm × 10 mm. The temperature of the hydrothermal reaction is 162 degrees Celsius. The time is 7 hours. The reacted samples need to be washed with ethanol and deionized water respectively and dried. The high temperature sintering temperature of the sample is 460 degrees Celsius, the high temperature sintering time is 60 minutes, and the heating rate of the sample sintering is controlled at 2 degrees Celsius / min.

[0061] The volume ratio of eth...

Embodiment 3

[0065] Weigh 20 milliliters of deionized water and 20 milliliters of hydrochloric acid, put them into a beaker and stir, after mixing evenly, dropwise add 600 microliters of titanium isopropoxide solution, add 0.01 g of carbon powder, and stir well to obtain solution for hydrothermal reaction. Transfer the reaction solution to the reaction kettle, and then carry out the hydrothermal reaction. The transfer volume of the hydrothermal reaction solution needs to be checked and not to be completely submerged in the conductive glass. Reserve an unsubmerged part of 2 mm × 10 mm. The temperature of the hydrothermal reaction is 165 degrees Celsius. The time is 6 hours. The reacted samples need to be washed with ethanol and deionized water respectively and dried. The high temperature sintering temperature of the sample is 500 degrees Celsius, the high temperature sintering time is 65 minutes, and the heating rate of the sample sintering is controlled at 3 degrees Celsius / min.

[0066]...

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Abstract

The invention discloses a carbon-doped titanium dioxide polarized homojunction photoelectrocatalysis anode material and a preparation method thereof. The homojunction takes conductive glass as a substrate, a layer of carbon-doped titanium dioxide film material is formed by regulating and controlling the pH value through a simple hydrothermal method, and then the homojunction titanium dioxide photoelectric catalytic material is formed by regulating and controlling the pH value and polarizing an ethanol solution. The preparation method of the homojunction comprises the following steps: firstly, mixing deionized water, hydrochloric acid and titanium isopropylate, doping quantitative carbon, and uniformly stirring; then, carrying out hydrothermal reaction, and carrying out high-temperature sintering; and finally, carrying out polarization treatment on the prepared titanium dioxide sample by using ethanol and water, and carrying out aging treatment. Compared with common titanium dioxide, the photoelectric anode subjected to polarization and aging treatment has the remarkable advantages of being excellent in performance, excellent in light corrosion resistance, stable in performance and the like.

Description

technical field [0001] The invention belongs to the field of photoelectric catalytic materials, in particular to a carbon-doped titanium dioxide polarized homojunction photoelectric catalytic anode material catalyst and a preparation method thereof. Background technique [0002] Traditional fossil energy resources are in short supply due to large-scale exploitation. Fossil energy is also non-renewable and uneven in geographical distribution, and fossil energy can easily cause corresponding environmental pollution. Hydrogen energy has many advantages such as clean and pollution-free, abundant resource reserves and high energy density. Photoelectric catalysis occurs on the surface, and the catalytic efficiency is often not high. It needs to overcome resistance such as solution resistance and requires a large overpotential. Photoelectric catalysis can effectively achieve the separation of electrons and holes by applying a bias voltage, and improve the photoelectric conversion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B1/55C25B11/091
CPCC25B1/04C25B1/55C25B11/091Y02P70/50
Inventor 曹立新任俊伟冯守华董博华王瑞凯李妍锌盛洪斌郝智超王光耀张灿辉
Owner OCEAN UNIV OF CHINA
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