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A kind of anthocyanin sensitized nanocomposite material and its preparation method and application

A nano-composite material and anthocyanin technology are applied in the field of preparation of surface-sensitized semiconductor materials, which can solve the problems of low photoelectric conversion efficiency and low catalytic performance, and achieve improved photocatalytic performance, improved catalytic ability, and good photosensitization. Effect

Active Publication Date: 2019-10-15
邳州泰利恒商贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the ultra-high carrier efficiency of semiconductors, their photoelectric conversion efficiency and catalytic performance are very low.

Method used

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  • A kind of anthocyanin sensitized nanocomposite material and its preparation method and application
  • A kind of anthocyanin sensitized nanocomposite material and its preparation method and application
  • A kind of anthocyanin sensitized nanocomposite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation method of anthocyanin sensitized nanocomposite material of the present invention is as follows:

[0040] (1) Preparation of anthocyanin ethanol solution

[0041] Weigh 4g of washed and dried morning glory petals, and grind it into powder with a mortar. Measure 1mL of concentrated hydrochloric acid (12mol / L) and 99mL of absolute ethanol in a 250mL beaker and mix evenly; then pour the weighed petals into the beaker, seal the mouth with plastic wrap, and store in a dark room at room temperature Soak and extract in medium for 24h. After the extraction, the solid residue was removed by vacuum filtration, and the residue was washed with absolute ethanol after filtration. After mixing the clear liquids, concentrating and drying, the obtained powder was redissolved in absolute ethanol to obtain an ethanol solution of anthocyanins with a concentration of 1 mg / mL, which was stored in a brown bottle for use.

[0042] (2) Preparation of reduced graphene oxide fil...

Embodiment 2

[0054] Example 2 Performance test of the anthocyanin-sensitized nanocomposite of the present invention

[0055] The anthocyanin sensitized nano-composite material prepared in Example 1 was glued out with a conductive adhesive of 1 cm 2 The size of the area, after the conductive adhesive is dried, the photocatalytic performance test is carried out.

[0056] After taking out the conductive glass, put it in the self-made electrolytic cell, and then do the linear scanning cyclic voltammetry (LSV) test on the CHI660 scanning electrochemical workstation under the condition of visible light irradiation, the electrolyte used is 0.5mol / LNa 2 SO 4 , the potential window used is -1~1 V, and the sweep speed is 50mv / s. A three-electrode system was adopted, the working electrode used was rGO / anthocyanin conductive glass, the reference electrode was a saturated calomel electrode, and the counter electrode was a platinum electrode. see results Figure 4 .

[0057] Figure 4 It is the tran...

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Abstract

The invention provides a method for preparing anthocyanin-sensitized nanocomposite materials, which includes the following steps: 1) Wash the picked petals, dry them, grind them in a mortar, then soak them in HCl ethanol solution for extraction, filter them, and clarify them. The solution is concentrated and dried, and the obtained powder is redissolved in ethanol, that is, anthocyanin ethanol solution; 2) Prepare a 1 mg / mL GO aqueous solution, and use two electrode deposition to deposit a layer of reduction on the clean FTO using electrophoretic deposition. Oxide graphene, and then anneal it under the protection of high-temperature inert gas; 3) Dip the FTO deposited with reduced graphene oxide into an anthocyanin ethanol solution to obtain an anthocyanin-sensitized nanocomposite. The anthocyanin-sensitized nanocomposite material of the present invention has good photosensitization properties and is of great significance in photolysis of water.

Description

technical field [0001] The invention belongs to the technical field of preparation of surface-sensitized semiconductor materials, and in particular relates to the preparation of an anthocyanin-sensitized nanocomposite material and the research on its photoelectric properties. Background technique [0002] With the rapid development of society and economy, energy crisis and environmental degradation have become global problems that need to be solved urgently. How to develop efficient, environmentally friendly, and low-cost energy has become urgent. As an ideal, efficient, and renewable energy source, solar energy has attracted the attention of more researchers, so scientists have devoted a lot of work to the preparation and application of photosensitized materials. Graphene is an excellent semiconductor material, which has been widely used in industrial production due to its simple preparation process, stability and low price. However, due to the ultra-high carrier efficien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/02B01J21/18C01B3/04
CPCC01B3/042B01J21/18B01J31/0202C01B2203/0277B01J35/39Y02E60/36
Inventor 卢小泉权晶晶贺彩花王秋红李洋王彩荷
Owner 邳州泰利恒商贸有限公司