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Modified porous typha angustifolia straw charcoal with tooth whitening and antibacterial effects

A tooth whitening and biochar technology, applied in the field of daily chemical materials, can solve the problems of tooth whitening or antibacterial, and achieve good adsorption effect

Inactive Publication Date: 2019-12-06
NANCHANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The leaves of water candles can be used as weaving materials; stem and leaf fibers can be used to make paper, and straws are often used as braids. There are no reports of tooth whitening or antibacterial in the existing public technology

Method used

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  • Modified porous typha angustifolia straw charcoal with tooth whitening and antibacterial effects
  • Modified porous typha angustifolia straw charcoal with tooth whitening and antibacterial effects
  • Modified porous typha angustifolia straw charcoal with tooth whitening and antibacterial effects

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Embodiment 1

[0026] 1. The preparation process of nano-zinc oxide modified porous cattail stalk biochar:

[0027] Wash the cattail stalks with distilled water for 2-5 times to remove dirt particles, then dry them in an oven for 24 hours, then thin the cattail straws and place them in a tube furnace for carbonization for 2 hours at a temperature of 800°C and a heating rate of 10°C / min Carry out the first pyrolysis to obtain cattail straw biochar. The obtained cattail stalk biochar was soaked in a concentration of 1mol L -1 KOH solution, the impregnation ratio was 1:1, and then the mixture was dehydrated in an oven for 12 hours. After the pulverized cattail biochar was placed in a nitrogen tube furnace with a purity of 99.995%, the nitrogen flow rate was controlled at 150 cm 3 min -1 Carry out the second pyrolysis, pretreatment at 400°C for 1 hour, then heat up to 800°C for 1 hour, and wash with deionized water to remove remaining chemical impurities. Transfer the obtained biochar powder...

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Abstract

The invention provides a preparation method of modified porous typha angustifolia straw charcoal with tooth whitening and antibacterial effects. Typha angustifolia straw is refined to 2000-3000 meshesby using a tempered ball mill, the surface of porous typha angustifolia straw charcoal is modified by zinc oxide nanoparticles with antibacterial functions, charcoal made of porous typha angustifoliastraw as a raw material is prepared through two times of pyrolysis and zinc oxide modification, the prepared porous typha angustifolia straw charcoal with modification of a nano zinc oxide layer canbe used as a novel tooth whitening and antibacterial material, and not only has a similar whitening effect, but also has remarkably reduced damage to enamel structures, and the porous typha angustifolia straw charcoal with supported zinc oxide is high in specific surface, is capable of effectively adsorbing active pigments and bacterial toxins which are tightly adhered to surfaces of teeth, and inaddition has good antibacterial capabilities.

Description

technical field [0001] The invention relates to tooth-whitening biochar with antibacterial effect and a preparation method thereof, belonging to the field of daily chemical materials. Background technique [0002] Teeth whitening materials are already widely used whitening health care products in modern life. Depending on its location and etiology, tooth discoloration can be classified as intrinsic, extrinsic, or both. Extrinsic tooth discoloration is caused by pigments produced by habitual intake of food (such as coffee, tea, chocolate, beverages or smoking, etc.) or by the deposition of pigments produced by bacteria in the oral cavity Formed during tooth development. Dental plaque is closely related to dental caries, gingival inflammation and bleeding, and periodontal disease. Therefore, we must continue to prevent and control dental plaque to keep it at a low level and prevent it from growing. [0003] Teeth whitening techniques are broadly divided into invasive and no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y40/00C01B32/05B82Y30/00A61K8/19A61K8/27A61Q11/00A61Q17/00
CPCA61K8/19A61K8/27A61Q11/00A61Q17/005B82Y30/00B82Y40/00C01G9/02C01P2002/72C01P2002/82C01P2004/03C01B32/05
Inventor 李婷
Owner NANCHANG NORMAL UNIV
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