Nano-grass composite photoelectric material for photoelectrochemical cathodic protection and its preparation and application

A technology for optoelectronic materials and cathodic protection, applied in photovoltaic power generation, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of limited optoelectronic performance, narrow spectral response range, easy recombination, etc., to achieve good transmission performance, photoelectric conversion. Efficiency improvement, effect of large light-capturing area

Active Publication Date: 2022-07-05
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 cathodic protection and its preparation and application
  • Nano-grass composite photoelectric material for photoelectrochemical cathodic protection and its preparation and application
  • Nano-grass composite photoelectric material for photoelectrochemical cathodic protection and its preparation and application

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, then ultrasonically cleaned in analytical pure 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 nano-grass substrate: place the FTO conductive glass treated in step 1) in the inner liner of the autoclave, place the conductive surface downward at an angle of 45° with the autoclave wall, and add solution a to the autoclave to immerse the glass substrate material, and then hydrothermally heated at 180 °C for 9 hours. After the hydrothermal treatment, the FTO glass was taken out, repeatedly rinsed with deionized water and dried, and then annealed at 450 °C for 1 hour to obtain TiO 2 Nanograss film substrates (see figure 1 a and b). Wherein, solution a is...

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, then ultrasonically cleaned in analytical pure 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 nano-grass substrate: place the FTO conductive glass treated in step 1) in the inner liner of the autoclave, place the conductive surface downward at an angle of 45° with the autoclave wall, and add solution a to the autoclave to immerse the glass substrate material, and then hydrothermally heated at 180 °C for 9 hours. After the hydrothermal treatment, the FTO glass was taken out, repeatedly rinsed with deionized water and dried, and then annealed at 450 °C for 1 hour to obtain TiO 2 Nanograss film substrate. Wherein, solution a is a solution obtained by a...

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Abstract

The invention belongs to the field of photoelectrochemical cathodic protection, in particular, the invention relates to a kind of ZnIn 2 S 4 / TiO 2 Nanocomposite optoelectronic material and preparation method and application thereof. Ultrafine hyperbranched TiO via a facile in situ hydrothermal method 2 On the nanograss substrate, three-dimensional nanocurd ZnIn with fully contacted interface was constructed 2 S 4 / TiO 2 Nanograss heterojunction photoelectrode. Under the condition of simulated sunlight without additional hole scavenger, the composite material can realize the photoelectrochemical cathodic protection effect of pure copper and low carbon steel with different self-corrosion potentials in seawater, and has the advantages of simple experimental operation, It has the advantages of green environmental protection and great 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 for simulating a real marine environment 2 S 4 / TiO 2 Nano-grass composite photoelectric material and preparation method and application thereof. Background technique [0002] Due to the harsh high chloride 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 deterioration of the ecological environment. Therefore, for metal materials serving in the marine environment, it is very urgent to choose appropriate anti-corrosion technologies, and researchers are actively developing various new technologies to mitigate metal corrosion. In view of the combination of cathodic protection technology with today's rapidly developing photoelectrochemical technology, t...

Claims

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Application Information

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Patent Type & Authority Patents(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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