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A biomimetic light harvesting device n3/pt1/aao film and its preparation process and application

A technology of N3-PT1 and PT1 is applied in the field of preparation of bionic light capture systems to achieve the effects of good rectification performance, easy operation and realization, and simple and novel preparation method.

Active Publication Date: 2022-05-20
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, regardless of whether they are based on natural proteins or artificial photosensitive molecules, they are still in the primary simulation stage at the single-molecule nA level, and there is still a lot of room for improvement in light-harvesting performance.

Method used

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  • A biomimetic light harvesting device n3/pt1/aao film and its preparation process and application
  • A biomimetic light harvesting device n3/pt1/aao film and its preparation process and application
  • A biomimetic light harvesting device n3/pt1/aao film and its preparation process and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The substrate of PT1 and N3 electrostatic self-assembly used in the present invention is a funnel-shaped aluminum oxide nanochannel with asymmetric structure, which is prepared by three times of anodic oxidation combined with phosphoric acid pore expansion. The specific steps are as follows:

[0053] (1) Pretreatment: Firstly, the specification is made of high-purity aluminum (99.999% purity, 0.2mm thickness) with a size of 4.5×5.5cm 2 The aluminum sheet was pre-treated in detergent, acetone, absolute ethanol and high-purity water for 10 minutes respectively to clean the impurities on the aluminum oxide film.

[0054] (2) Electrochemical polishing: in perchloric acid (HClO 4 ) and ethanol (volume ratio 1:4) for electrochemical polishing, the polishing voltage is 17.0V, and the polishing time is 7 minutes, which makes the aluminum surface smoother and is conducive to the growth of the porous alumina layer.

[0055] (3) The first anodic oxidation: In a low-temperature an...

Embodiment 2

[0064] The preparation of a PT1-N3(T) bionic light harvesting device, the specific implementation steps are as follows:

[0065] (1) Using the preparation method provided in Example 1, a funnel-shaped aluminum oxide nanochannel with asymmetric structure was prepared by anodic oxidation method combined with phosphoric acid pore expansion method, washed and naturally air-dried, and set aside. The upper surface pore diameter of the funnel-shaped alumina nanochannel is 60±5nm, the lower surface pore diameter is 30±5nm, and the length is 80μm.

[0066] (2) The preparation solvent is a 1 mg / mL PT1 solution in DMF.

[0067] (3) Using the solvent evaporation method, PT1 was modified in the alumina nanochannel for 10 h, and the modification length was 80 μm to obtain PT1 functionalized AAO.

[0068] (5) The preparation solvent is 2mM N3 solution of ethanol and ethanol solution.

[0069] (6) The N3 solution was modified at the small hole end of the AAO nanochannel grafted with PT1 for...

Embodiment 3

[0074] The preparation of PT1-N3(B) bionic light harvesting system device, the specific implementation steps are as follows:

[0075] The other steps implemented in this example are the same as the preparation process in Example 2, except that the electrostatic assembly site is at the B end of the macropore.

[0076] Specifically, the AAO of the grafted PT1 in the case 2 (3) is placed in a self-made electrolyzer such as Figure 5 At the position of the connection 5c in the middle of the two tanks, inject the ethanol solution in the small hole side tank 5a of the AAO, and the N3 solution prepared in (4) in the large hole side tank 5b. Both sides control the length of grooming time at the same time. After modification for 4 hours, rinse with a large amount of ultrapure water and air-dry naturally to obtain a biomimetic photoresponse system device with a PT1-N3 (B) structure of the present invention, and the modified length of N3 is 54 μm.

[0077] PT1-N3(B) nanochannels are ap...

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Abstract

The invention specifically relates to a bionic light capture device N3 / PT1 / AAO film. The N3 / PT1 / AAO film is prepared by anodizing and electrostatic self-assembly process, and the N3 / PT1 / AAO film includes a funnel-shaped base AAO layer, a PT1 functional layer and an N3 functional layer; wherein, the There is an energy level difference between the PT1 molecule and the N3 molecule; the PT1 functional layer and the N3 functional layer are adsorbed on the macropore end or the small pore end side of the AAO substrate in the form of electrostatic mutual assembly, and the substrate side will appear large-scale. PT1‑N3 heteroplane. Through the inner walls of the nanochannels, large-scale N3‑PT1 heteroplanes are formed. Under simulated sunlight irradiation, it not only achieves the capture of μA‑level high photoresponse ion current, but also has good ion selectivity and large ion flux, which provides new opportunities for the development of high-performance nanofluidic biomimetic light harvesting systems. research ideas.

Description

technical field [0001] The present invention relates to the technical field of nanomaterials, in particular to the preparation of a bionic light-harvesting device N3 / PT1 / AAO film, and more specifically to a bionic light-harvesting device based on the synergistic effect of bipyridyl ruthenium complexes and polythiophene derivatives. Preparation and application of biomimetic light-harvesting system of alumina nanochannel membrane. Background technique [0002] Harnessing solar energy efficiently is one of the greatest challenges of our time. In nature, biological systems harvest light in a variety of ways, including harvesting solar energy through photosynthesis. In the process of plant photosynthesis, the main process of photon capture is the absorption of light energy by pigment molecules on the photosynthetic membrane, the absorbed light energy is transmitted in the form of excitation energy, charge separation occurs in the photosynthetic reaction center, and in the photos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/095C25B1/55C25B3/21C25D11/04C25D11/12C25D11/24
CPCC25D11/045C25D11/12C25D11/24Y02E10/549
Inventor 范霞任艳
Owner BEIHANG UNIV
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