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A preparation method of light-harvesting and oxygen-releasing paper coating material

A coating material and paper-based technology, applied in the field of preparation of bionic paper-based coating materials, can solve the problems of cumbersome experimental operation process, no application, complicated reagent selection, etc., to improve light-harvesting performance, reduce light inhibition, and highly operable effect

Active Publication Date: 2019-12-03
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Fashui Hong et al. (Biological Element Research, 2005, 104, 249-260) reported a method of soaking spinach seeds in a nano-titanium dioxide solution, and then using a petri dish to cultivate spinach seedlings under conditions such as suitable temperature, humidity and light. Spray growth with titanium dioxide solution at the six-leaf stage, and extract chloroplasts, which favorably confirmed that titanium dioxide can promote plant photosynthesis, but the experimental operation process is cumbersome, the selection of reagents is complicated, and it has not been applied to paper with bionic light harvesting and oxygen release functions. Quality coating field

Method used

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  • A preparation method of light-harvesting and oxygen-releasing paper coating material
  • A preparation method of light-harvesting and oxygen-releasing paper coating material
  • A preparation method of light-harvesting and oxygen-releasing paper coating material

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Weigh 20 g of fresh spinach leaves, cut them into pieces, put them into a mortar, add 60 mL of ice-cold extract (0.05 mol / L pH=7.6 phosphate buffer solution containing 0.4 mol / L sucrose, 0.1 mol / L sodium chloride) and quickly grind 2 Slurry in minutes, filter with 6 layers of gauze, centrifuge the filtrate at 300r / min for 5 minutes, discard the precipitate, and centrifuge the supernatant at 1000r / min for 5 minutes to obtain complete chloroplasts; take 5mg of chloroplasts and add them to 4mL 0.05mol / L pH=7.6 Phosphate buffered saline solution, mix well to obtain chloroplast suspension; weigh 2×10 -4 Add 1 mL of P25 nano-titanium dioxide powder with a particle size of 25 nm to 1 mL of deionized water, and ultrasonically disperse at room temperature for 60 minutes to obtain a titanium dioxide aqueous solution; fully mix 4 mL of chloroplast suspension and 50 μL of titanium dioxide aqueous solution, and the mass of chloroplasts and titanium dioxide in the resulting mixture is...

Embodiment 2

[0023] In this example, 4 mL of chloroplast suspension and 100 μL of titanium dioxide aqueous solution were thoroughly mixed, and the mass ratio of chloroplast to titanium dioxide in the resulting mixture was 1:4×10 -6 , the other steps were the same as in Example 1 to obtain a light-harvesting and oxygen-releasing paper coating material.

Embodiment 3

[0025] In this example, 4 mL of chloroplast suspension and 150 μL of titanium dioxide aqueous solution were thoroughly mixed, and the mass ratio of chloroplast to titanium dioxide in the resulting mixture was 1:6×10 -6 , the other steps were the same as in Example 1 to obtain a light-harvesting and oxygen-releasing paper coating material.

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Abstract

The invention discloses a method for preparing a light-capturing and oxygen-releasing paper coating material. The method directly mixes freshly extracted intact chloroplasts and hydrophilic nano-titanium dioxide fully and evenly, and then filters them through hydrophilic filter paper to prepare A bionic paper coating material with light-trapping and oxygen-releasing functions. This method uses the ultraviolet photocatalytic activity of titanium dioxide in a composite system of isolated chloroplasts and nano-titanium dioxide to increase the light absorption of chloroplasts and reduce the reactive oxygen species produced by photosynthesis. free radicals, thereby achieving oxygen release under light conditions. The raw materials used in the present invention are biological materials, which are green and environmentally friendly, cheap and easy to obtain, and have a simple preparation method. The obtained paper coating has stable light-catching performance and a certain oxygen-releasing effect. It has great application in the fields of air purification and advertising display board coating. potential application prospects.

Description

technical field [0001] The invention belongs to the technical field of bionano materials, and in particular relates to a preparation method of a bionic paper coating material with light-harvesting and oxygen-releasing functions. Background technique [0002] As the photosynthetic organelle in natural plant cells, chloroplast consists of three parts: chloroplast, thylakoid and matrix. It exists in the cell matrix. The chlorophyll contained in it can capture light energy and absorb carbon dioxide. Water splitting occurs at the inner membrane, releasing oxygen. However, isolated chloroplasts are very sensitive to the surrounding environment, have a short survival time, and have strong absorption in the visible light region. The superoxide free radicals (·O 2 ), the accumulation of hydroxyl radicals (·OH) and malondialdehyde will accelerate the death of chloroplasts, thereby reducing plant photosynthesis. Studies have shown that titanium dioxide (especially rutile and anatase) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30B01J31/38
CPCB01J20/24B01J20/28057B01J31/38B01J35/39
Inventor 沈淑坤张瑞刘晓邦陈建刚胡道道周亚军
Owner SHAANXI NORMAL UNIV
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