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Biomass carbon dots as well as preparation method and application thereof

A biomass carbon and biomass technology, applied in chemical instruments and methods, nano-carbon, nanotechnology for materials and surface science, etc., can solve the problem of crop yield and quality decline, reduce plant dry matter accumulation, and affect photosynthetic efficiency To achieve good biocompatibility and water solubility, increase photosynthetic rate and antioxidant capacity, and simple process

Pending Publication Date: 2022-04-29
XUZHOU INST OF AGRI SCI IN JIANGSU XUHUAI DISTRICT (JIANGSU XUZHOU SWEETPOTATO CENT)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low potassium stress seriously affects the growth and development of plants. Studies have shown that potassium deficiency can cause leaf edge curling and yellowing of plant leaves, reduce dry matter accumulation in plants, inhibit plant root growth, affect photosynthetic efficiency, and lead to crop yield and quality. Decreased significantly

Method used

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  • Biomass carbon dots as well as preparation method and application thereof
  • Biomass carbon dots as well as preparation method and application thereof
  • Biomass carbon dots as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Weigh 6.0g of Salvia miltiorrhiza powder and evenly disperse in 60mL of distilled water, stir at room temperature for 10min, then place the suspension in an autoclave, react at 100°C for 4h to form a carbon dot solution, and cool the formed carbon dot solution to room temperature Use the water microporous membrane filter and the dialysis bag for dialysis respectively. The pore size of the water microporous filter membrane is 0.22μm, and the molecular weight of the dialysis bag is 3500Da. After removing impurities, pure biomass carbon dots are obtained, and the yield is about 20%. .

Embodiment 2

[0038] Weigh 3.0g of Salvia miltiorrhiza powder and evenly disperse in 60mL of distilled water, stir at room temperature for 10min, then place the suspension in an autoclave, react at 120°C for 6h to form a carbon dot solution, and cool the formed carbon dot solution to room temperature Dialysis is carried out by using water-based microporous membrane filtration and dialysis bags respectively. The pore size of the water-based microporous membrane is 0.22 μm, and the molecular weight of the dialysis bag is 3500 Da. After removing impurities, pure biomass carbon dots are obtained, and the yield is about 27%. .

Embodiment 3

[0040] Weigh 3.0g of Salvia miltiorrhiza powder and evenly disperse in 60mL of distilled water, stir at room temperature for 10min, then place the suspension in an autoclave, react at 150°C for 6h to form a carbon dot solution, and cool the formed carbon dot solution to room temperature Use the water microporous membrane filter and the dialysis bag for dialysis respectively. The pore size of the water microporous filter membrane is 0.22μm, and the molecular weight of the dialysis bag is 3500Da. After removing impurities, pure biomass carbon dots are obtained, and the yield is about 30%. .

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Abstract

The invention discloses a biomass carbon dot and a preparation method and application thereof.The preparation method comprises the steps that phenolic acid-containing biomass serves as a carbon source, the carbon source and distilled water are subjected to a one-step hydrothermal reaction to prepare the water-soluble carbon dot, the preparation process is simple, operation is easy, cost is low, the yield reaches up to 20-30%, the reaction is completed within 4-12 h, pollution is avoided, and the biomass carbon dot can be used for industrial production. The prepared carbon dots are small in size, have different oxygen-containing functional groups on the surface, have good biocompatibility and water solubility, and can remarkably promote potassium ion absorption of plant roots, increase root activity, promote plant root growth and improve the photosynthetic rate and antioxidant capacity of plants under low potassium stress; therefore, the low-potassium stress of plants is obviously relieved. The carbon dots provided by the invention have the characteristic of relieving low potassium stress of plants, and can be applied to agricultural production to improve the yield and quality of crops under low potassium stress.

Description

technical field [0001] The invention relates to the field of carbon nanomaterials and applications, in particular to a biomass carbon point and a preparation method and application thereof. Background technique [0002] Potassium (K + ) is one of the three major nutritional elements necessary for plant growth and development, and almost participates in the entire process of plant growth and development and physiological metabolism. However, potassium resources are scarce in China. According to statistics, about 70% of the arable land in my country is deficient in potassium, and about 45% of the arable land is seriously deficient in potassium. Low potassium stress seriously affects the growth and development of plants. Studies have shown that potassium deficiency can cause leaf edge curling and yellowing of plant leaves, reduce dry matter accumulation in plants, inhibit plant root growth, affect photosynthetic efficiency, and lead to crop yield and quality. Decreased signif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15C09K11/65B82Y20/00B82Y30/00
CPCC01B32/15C09K11/65B82Y20/00B82Y30/00
Inventor 唐忠厚李艳娟孙健余益成
Owner XUZHOU INST OF AGRI SCI IN JIANGSU XUHUAI DISTRICT (JIANGSU XUZHOU SWEETPOTATO CENT)
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