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Method for preparing nanometer light adsorption material based on plant thylakoid structure

A light-absorbing material and plant-based technology, applied in the direction of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of not being able to apply chloroplasts, not being able to obtain replicas of thylakoid structures, etc., to achieve high nano-layered structures and low cost low cost and easy operation

Inactive Publication Date: 2011-09-28
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar methods (infiltration method, sol-gel method) cannot be applied to the replication of chloroplasts, mainly because the outer membrane of chloroplasts prevents the infiltration of precursor solutions, so that replicas with thylakoid structures cannot be obtained

Method used

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  • Method for preparing nanometer light adsorption material based on plant thylakoid structure
  • Method for preparing nanometer light adsorption material based on plant thylakoid structure
  • Method for preparing nanometer light adsorption material based on plant thylakoid structure

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Experimental program
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Effect test

Embodiment 1

[0025] (1) Wash the fresh spinach leaves, remove the midrib, and put them in a refrigerator at 0-4°C to pre-cool. Configure the extract, weigh 60g sorbitol, 6.06g Tris, 1g MgCl 2 ·6H 2 O, 0.6g NaCl, 0.77g EDTA-Na 2 , 0.4g sodium erythorbate, add 1000ml distilled water, stir until completely dissolved. Adjust the pH to 7-8 with HCl. Take 10-20g of cooled spinach leaves, shred them, put them into a mortar, pour in the extract, grind them by hand for 1-2 minutes, and filter after grinding. Put the filtrate into a pre-cooled centrifuge tube and centrifuge for 2-4 minutes. The supernatant was poured off, and the precipitate was chloroplast.

[0026] (2) Preparing the precursor solution titanium tetrachloride alcohol solution, the preparation is specifically: under the condition of ice-water bath, anhydrous ethanol and titanium tetrachloride are mixed, the volume ratio is 44:4, and magnetically stirred for 10 minutes.

[0027] (3) The chloroplast extracted in the first step is...

Embodiment 2

[0034] (1) Wash fresh lettuce leaves, remove the midrib, pour the extract, grind and filter to obtain chloroplasts.

[0035] (2) Preparing the precursor solution titanium tetrachloride alcohol solution, the preparation is specifically: under the condition of ice-water bath, anhydrous ethanol and titanium tetrachloride are mixed with a volume ratio of 44:1, and magnetically stirred for 10 minutes.

[0036] (3) The chloroplast extracted in the first step is placed in the extraction solution prepared in the second step for ultrasonic treatment. The ultrasonic frequency is 40KHz, the ultrasonic power is 100W, and the time is 1 hour.

[0037] (4) After the sonication is finished, the sample is taken out and centrifuged. The supernatant liquid is poured off, and the precipitation is the viscous system in which the alcohol solution of titanium tetrachloride is immersed in the chloroplast. Roasting at 500°C, removing the biological template, yields titanium dioxide with a plant thyl...

Embodiment 3

[0039](1) Wash the fresh sycamore leaves, remove the midrib, pour the extract, grind and filter to obtain chloroplasts.

[0040] (2) Preparing the precursor solution titanium tetrachloride alcohol solution, the preparation is specifically: under the condition of ice-water bath, anhydrous ethanol and titanium tetrachloride are mixed with a volume ratio of 44:10, and magnetically stirred for 10 minutes.

[0041] (3) The chloroplast extracted in the first step is placed in the extraction solution prepared in the second step for ultrasonic treatment. The ultrasonic frequency is 60KHz, the ultrasonic power is 200W, and the time is 2 hours.

[0042] (4) After the sonication is finished, the sample is taken out and centrifuged. The supernatant liquid is poured off, the precipitate is the alcohol solution of titanium tetrachloride immersed in the viscous system of chloroplasts and roasted at 600°C, and the biological template is removed to obtain titanium dioxide with plant thylakoid...

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Abstract

The invention relates to a method for preparing a nanometer light adsorption material based on a plant thylakoid structure, belonging to the technical field of nanometer semiconductors. The nanometer light adsorption material is prepared by extracting chloroplast from fresh plant blades, mixing the chloroplast with precursor titanium tetrachloride solution and baking. The implemented object in the invention has low cost, rich resources, simple process, convenient operation and low cost in the synthetic process. The constructed nanometer material represents the coupling function of the structural specificity and optical property of replica and improves the light adsorption performance of the material.

Description

technical field [0001] The invention relates to a preparation method in the technical field of nano light-absorbing materials, in particular to a preparation method of nano light-absorbing materials based on plant thylakoid structures. Background technique [0002] Everything in nature evolves to adapt to the ecological environment, forming biological species with various structures. Among them, chloroplasts, which exist in large quantities in plant leaves, are excellent places for organic matter to be transformed into inorganic matter. Chlorophyll a and b in chloroplasts absorb sunlight and convert light energy into chemical energy through photosynthesis. The light absorption and energy conversion performance of chloroplasts are carried out in a fine layered structure called thylakoid, which is a layered structure formed by stacking several thylakoid grana. Thylakoids provide the site for photosynthesis. Its structure makes it have a high specific surface area, which inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/08B82B3/00H01G9/042H01M14/00H01L51/48
CPCY02E10/50Y02E10/549Y02P70/50
Inventor 朱申敏刘昕晔张荻陈晨忻
Owner SHANGHAI JIAO TONG UNIV
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