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Red phosphorus photoelectrode and preparation method and application thereof

A photoelectrode and red phosphorus technology, applied in electrodes, photosensitive devices, circuits, etc., can solve problems such as narrow light absorption range, and achieve the effects of simple preparation method, simple composition and low cost

Active Publication Date: 2021-09-17
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]At present, finding and preparing highly efficient photoanode materials is the focus of research. Traditional metal oxide or sulfide photoanode materials have a narrow range of light absorption and absorb energy and absorb ultraviolet light. or part of the visible face

Method used

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  • Red phosphorus photoelectrode and preparation method and application thereof
  • Red phosphorus photoelectrode and preparation method and application thereof
  • Red phosphorus photoelectrode and preparation method and application thereof

Examples

Experimental program
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Embodiment 1

[0037] In this embodiment, a crystalline phase red phosphorescent electrode (CP / W) with a tungsten mesh substrate is prepared, and the specific process is as follows:

[0038] Weigh 200mg of red phosphorus and a metal tungsten mesh substrate with a width of 1.0cm and a length of 20.0cm, seal them in a quartz organ, and vacuumize them. Then put the quartz tube into the furnace, raise the temperature to about 550°C at a rate of 1.0°C / min, protect it for 15 hours and then lower it to room temperature at a rate of 0.1°C / min. Then break the quartz tube, take out the substrate, and wash it with water and ethanol to prepare a red phosphorescent electrode.

[0039] figure 1 It is the photo of the quartz tube before and after the heat treatment and the scanning electron microscope picture. From figure 1 It can be seen that red phosphorus is deposited on the tungsten mesh after heat treatment.

[0040] Electron microscope scanning of the red phosphorescent electrode after heat treat...

Embodiment 2

[0042] In this embodiment, a crystalline phase red phosphorescent electrode (CP / W plate) with a tungsten sheet substrate is prepared, and the specific process is as follows:

[0043] Weigh 200mg of red phosphorus and a metal tungsten substrate with a width of 1.0cm, a length of 3.0cm, and a thickness of 0.2cm, seal them in a quartz organ, and evacuate them. Then put the quartz tube into the furnace, raise the temperature to about 550°C at a rate of 1.0°C / min, protect it for 15 hours and then lower it to room temperature at a rate of 0.1°C / min. Then break the quartz tube, take out the substrate, and wash it with water and ethanol to prepare a red phosphorescent electrode.

Embodiment 3

[0045] In this embodiment, a crystalline phase red phosphorescent electrode (CP / Mo plate) with a molybdenum sheet substrate is prepared, and the specific process is as follows:

[0046] Weigh 200mg of red phosphorus and a 1.0cm wide, 3.0cm long, 0.2cm thick metal molybdenum substrate, seal them in a quartz tube, and vacuumize them. Then put the quartz tube into the furnace, raise the temperature to about 550°C at a rate of 1.0°C / min, protect it for 15 hours and then lower it to room temperature at a rate of 0.1°C / min. Then break the quartz tube, take out the substrate, and wash it with water and ethanol to prepare a red phosphorescent electrode.

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Abstract

The invention provides a red phosphorus photoelectrode and a preparation method and application thereof. The red phosphorus photoelectrode is simple in composition, the raw material red phosphorus is cheap, and wide popularization is facilitated. When the product is applied to an anode material in photoelectrocatalysis, electric energy and / or hydrogen energy can be generated, light current which is 8.0 mA / cm2 at most is generated, and the hydrogen yield reaches 1.89 mL / h. The red phosphorus photoelectrode is simple in preparation method and low in cost.

Description

technical field [0001] The invention belongs to the field of photoelectric catalysis energy conversion, and in particular relates to a red phosphor photoelectrode and its preparation method and application. Background technique [0002] The energy issue is a major challenge facing mankind today. Solar energy is a renewable and sustainable energy source. How to develop and utilize solar energy is an important research topic today. Photocatalytic technology is a technology that combines photocatalytic and electrocatalytic technologies to efficiently utilize solar energy. A photovoltaic cell consists of an anode and a cathode. Driven by light and electricity, the photoanode, which is generally composed of semiconductors, generates photo-generated positive electrodes (holes) and photo-generated negative electrodes (electrons) when illuminated, and the electrons will migrate to the cathode. This process will generate current and electrical energy. On the other hand, an oxidat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/052C25B11/061C25B11/031C25B11/075C25B1/04C25B1/55C23C16/28H01G9/20H01G9/042
CPCC25B11/052C25B11/061C25B11/031C25B11/075C25B1/04C25B1/55C23C16/28H01G9/20H01G9/042Y02E60/36
Inventor 胡卓锋卢映龙刘铭浩
Owner SUN YAT SEN UNIV
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