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Water-soluble biomass derived carbon dots as well as preparation method and application thereof

A biomass and water-soluble technology, applied in botany equipment and methods, chemicals for biological control, applications, etc., can solve problems such as negative impact on crop yield and quality, hindering crop growth, hindering industrial application, etc. Achieve the effect of alleviating the low iron stress of plants, excellent biological characteristics, and improving plant stress resistance

Pending Publication Date: 2022-05-24
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the land resources available for agricultural production are limited, and the global climate is changing rapidly. Plants are subjected to various abiotic stresses, such as soil salinization and mineral element deficiency, which significantly hinder the growth of crops and cause serious negative effects on crop yield and quality. influences
At present, although transgenic technology has significant effects in improving crop yield and quality, its low social acceptance hinders its industrial application

Method used

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  • Water-soluble biomass derived carbon dots as well as preparation method and application thereof
  • Water-soluble biomass derived carbon dots as well as preparation method and application thereof
  • Water-soluble biomass derived carbon dots as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 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 The dialysis is carried out by using water-based microporous membrane filtration and dialysis bag 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 water-soluble biomass-derived carbon dots are obtained, and the yield is about 20%.

Embodiment 2

[0039] 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 The dialysis is carried out by using water-based microporous membrane filtration and dialysis bag 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 water-soluble biomass-derived carbon dots are obtained, and the yield is about was 27%.

Embodiment 3

[0041] 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 The dialysis is carried out by using water-based microporous membrane filtration and dialysis bag 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 water-soluble biomass-derived carbon dots are obtained, and the yield is about 30%.

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Abstract

The invention discloses a water-soluble biomass derived carbon dot and a preparation method and application thereof.The preparation method is characterized in that phenolic acid-containing biomass serves as a carbon source, the water-soluble carbon dot is prepared through a one-step hydrothermal reaction of the carbon source and distilled water, the preparation process is simple, operation is easy, the cost is low, the yield reaches up to 20-30%, pollution is avoided, and the preparation method can be used for industrial production. The surface of the carbon dot provided by the invention contains rich oxygen-containing functional groups, so that the carbon dot is endowed with excellent biological characteristics, Ca < 2 + > inflow of a plant root system is induced, a calcium signal is formed, and the expression of a corresponding defense gene is regulated. The carbon dots not only can activate the expression of a Na < + > / H < + > reverse transport protein gene SOS1 of a plant root system cytoplasmic membrane, reduce the absorption of the plant to Na < + > and remarkably relieve plant salt stress, but also can improve the overexpression of a plant low-iron response gene, improve the absorption and utilization efficiency of the plant to Fe < 2 + > and relieve plant low-iron stress. The prepared carbon dots can effectively relieve plant abiotic stress and improve plant stress resistance.

Description

technical field [0001] The invention relates to the field of carbon nanomaterials and their applications, in particular to a water-soluble biomass-derived carbon dot and its preparation method and application. Background technique [0002] According to the report of the United Nations, the global population will exceed 9.7 billion in 2050. At that time, food production must increase by 70% to meet the needs of the growing population. However, the land resources available for agricultural production are limited, and the global climate is changing rapidly. Plants are subjected to various abiotic stresses, such as soil salinization and mineral element deficiency, which significantly hinder the growth of crops and cause serious negative effects on crop yield and quality. influences. At present, although transgenic technology has a significant effect in improving crop yield and quality, its low social acceptance hinders its industrial application. [0003] The rapid development...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15A01N59/00A01P21/00A01C21/00
CPCC01B32/15A01N59/00A01C21/00
Inventor 李艳娟孙健余益成李宗芸
Owner XUZHOU NORMAL UNIVERSITY
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