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 complex reagent selection, cumbersome experimental operation process, no application, etc., and achieve strong operability, improve light-harvesting performance, Reduce the effect of photoinhibition

Active Publication Date: 2017-12-12
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Preparation method of light-harvesting and oxygen-releasing paper coating material
  • 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 preparation method of a light-harvesting and oxygen-releasing paper coating material. The method comprises the following steps: directly sufficiently and uniformly mixing freshly-extracted complete chloroplast and hydrophilic nano titanium dioxide; carrying out extraction filtration through hydrophilic filter paper so as to prepare a bionic paper coating material with light-harvesting and oxygen-releasing functions. According to the method disclosed by the invention, in a compound system of in-vitro chloroplast and nano titanium dioxide, the ultraviolet photocatalytic activity of the titanium dioxide is utilized and the light absorption of the chloroplast is increased; active oxygen free radicals generated by photosynthesis are reduced so that oxygen releasing is realized under a light illumination condition. According to the preparation method disclosed by the invention, raw materials belong to biological materials, are low in cost, easy to obtain and green and environmentally friendly; the preparation method is simple and an obtained paper coating has a stable light-harvesting property and a certain oxygen-releasing effect, so that the light-harvesting and oxygen-releasing paper coating material has a potential application prospect in the fields of air purification and advertisement exhibition board coatings.

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 Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30B01J31/38
CPCB01J20/24B01J20/28057B01J31/38B01J35/004
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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