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Nano grass composite photoelectric material for photoelectrochemical cathode protection and preparation and application of nano grass composite photoelectric material

A photoelectric material and cathodic protection technology, applied in photovoltaic power generation, final product manufacturing, sustainable manufacturing/processing, etc., can solve problems such as easy compounding, limited photoelectric performance, narrow spectral response range, etc., to achieve large light capture area, good Improvement of transmission performance and photoelectric conversion efficiency

Active Publication Date: 2021-06-08
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has the disadvantages of only responding to ultraviolet light, narrow spectral response range, and easy recombination of photogenerated electron-hole pairs, which largely limit its photoelectric performance.

Method used

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  • Nano grass composite photoelectric material for photoelectrochemical cathode protection and preparation and application of nano grass composite photoelectric material
  • Nano grass composite photoelectric material for photoelectrochemical cathode protection and preparation and application of nano grass composite photoelectric material
  • Nano grass composite photoelectric material for photoelectrochemical cathode protection and preparation and application of nano grass composite photoelectric material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] ZnIn for Photoelectrochemical Cathodic Protection 2 S 4 / TiO 2 Preparation of nanograss composite optoelectronic materials:

[0039] 1) Preparation of FTO conductive glass: first cut the FTO glass into 20×10mm 2 size, and then ultrasonically cleaned in analytical grade acetone for 5 minutes, and then cleaned in deionized water for 5 minutes, and then the FTO glass was dried for use.

[0040] 2) TiO 2 Preparation of the nanograss substrate: place the FTO conductive glass treated in step 1) in the liner of the autoclave, with the conductive side facing down and at an angle of 45° to the wall of the autoclave, and add solution a into the autoclave to immerse the glass substrate material, and then heated in water at 180°C for 9 hours. After the hydrothermal treatment, the FTO glass was taken out, rinsed repeatedly with deionized water and dried, and then annealed at 450 °C for 1 hour to obtain TiO 2 Nanograss film substrate (see figure 1 a and b). Among them, soluti...

Embodiment 2

[0051] ZnIn for Photoelectrochemical Cathodic Protection 2 S 4 / TiO 2 Preparation of nanograss composite optoelectronic materials:

[0052] 1) Preparation of FTO conductive glass: first cut the FTO glass into 20×10mm 2 size, and then ultrasonically cleaned in analytical grade acetone for 5 minutes, and then cleaned in deionized water for 5 minutes, and then the FTO glass was dried for use.

[0053] 2) TiO 2 Preparation of the nanograss substrate: place the FTO conductive glass treated in step 1) in the liner of the autoclave, with the conductive side facing down and at an angle of 45° to the wall of the autoclave, and add solution a into the autoclave to immerse the glass substrate material, and then heated in water at 180°C for 9 hours. After the hydrothermal treatment, the FTO glass was taken out, rinsed repeatedly with deionized water and dried, and then annealed at 450 °C for 1 hour to obtain TiO 2 Nanograss film substrate. Among them, solution a is a solution in wh...

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Abstract

The invention belongs to the field of photoelectrochemical cathode protection, and particularly relates to a ZnIn2S4 / TiO2 nano composite photoelectric material and a preparation method and application of the ZnIn2S4 / TiO2 nano composite photoelectric material. Through a simple and convenient in-situ hydrothermal method, a three-dimensional nano flower ball ZnIn2S4 / TiO2 nano grass cluster heterojunction photoelectrode with a fully contacted interface is constructed on a superfine highly branched TiO2 nano grass cluster substrate. Under simulated sunlight irradiation and under the condition that no extra hole scavenger exists, the composite material can achieve the photoelectrochemical cathode protection effect on pure copper and low-carbon steel with different self-corrosion potentials in seawater, and has the advantages of being simple in experimental operation, environmentally friendly and large in application potential.

Description

technical field [0001] The invention belongs to the field of photoelectrochemical cathodic protection, in particular, the invention relates to a ZnIn used for photoelectrochemical cathodic protection under simulated real marine environment 2 S 4 / TiO 2 Nanograss composite optoelectronic material and its preparation method and application. Background technique [0002] Due to the harsh high-chlorine environment, the corrosion failure behavior of metal materials used in the marine environment is extremely serious, which will lead to a large number of industrial accidents and the deterioration of the ecological environment. Therefore, it is very urgent to choose the appropriate anti-corrosion technology for metal materials serving in the marine environment, and researchers are actively developing various new technologies to reduce metal corrosion. In view of the combination of cathodic protection technology with today's rapidly developing photoelectrochemical technology, pho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F13/14
CPCC23F13/14Y02P70/50
Inventor 陈卓元姜旭宏孙萌萌鹿桂英荆江平
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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