CN110697759A - Ultraviolet-absorbing nano zinc oxide - Google Patents
Ultraviolet-absorbing nano zinc oxide Download PDFInfo
- Publication number
- CN110697759A CN110697759A CN201910911687.7A CN201910911687A CN110697759A CN 110697759 A CN110697759 A CN 110697759A CN 201910911687 A CN201910911687 A CN 201910911687A CN 110697759 A CN110697759 A CN 110697759A
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- CN
- China
- Prior art keywords
- zinc oxide
- dopant
- metal
- metal dopant
- nano zinc
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/02—Oxides; Hydroxides
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Abstract
The invention discloses a nano zinc oxide capable of absorbing ultraviolet rays, which comprises a zinc part, a first metal element dopant part and a second metal element dopant part, wherein the zinc part is more than 99 weight percent; the first metal dopant portion and the second metal dopant portion are present in a weight ratio of 0.5-1: 1-1.5; the first metal dopant exists in a zinc oxide hexagonal fiber zinc structure in a metal ion 2+ form; the second metal dopant exists in the form of metal ions 2+ and 3+ or exists simultaneously in the zinc oxide hexagonal fiber zinc structure. The nanometer zinc oxide capable of absorbing ultraviolet ray has more electrons than zinc oxide, and when the nanometer zinc oxide is irradiated by ultraviolet ray, the electrons in the valence band may absorb ultraviolet ray to excite the conduction band and produce holes and electrons to absorb and scatter ultraviolet ray.
Description
Technical Field
The invention relates to a nano zinc oxide capable of absorbing ultraviolet rays.
Background
Skin cancer is a significant public health problem, accounting for 50% of cancer diagnosis cases in the united states. Ultraviolet radiation (UV) can cause damage at the molecular and cellular level and is considered to be a major environmental factor leading to skin cancer. Prolonged exposure to UV radiation, such as from the sun, can lead to the formation of photodermopathy and erythema, as well as increasing the risk of skin cancer such as melanoma, and accelerating the skin aging process, such as skin loss of elasticity and wrinkling.
Zinc oxide is useful as a particulate material for sunscreens because it absorbs and scatters ultraviolet radiation, and the present invention is directed to the preparation of a nano zinc oxide with enhanced absorption of ultraviolet radiation.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a nano zinc oxide that absorbs ultraviolet rays.
In order to achieve the purpose, the invention is realized by the following technical scheme: an ultraviolet absorbing nano zinc oxide comprising greater than 99 wt% of a zinc portion, a first metallic element dopant portion, and a second metallic element dopant portion;
the first metal dopant portion and the second metal dopant portion are present in a weight ratio of 0.5-1: 1-1.5;
the first metal dopant exists in a zinc oxide hexagonal fiber zinc structure in a metal ion 2+ form;
the second metal dopant exists in the form of metal ions 2+ and 3+ in the zinc oxide hexagonal fiber zinc structure or simultaneously;
preparing zinc oxide containing dopant by using dehydrated zinc acetate and chloride through a sol-gel method;
mixing zinc oxide prepared by a sol-gel method with water to prepare a nano zinc oxide aqueous suspension with the mass concentration of 5.8%, ultrasonically dispersing for 4 ~ 6 minutes, adding aluminum potassium sulfate with the mass of 1.8% of the nano zinc oxide, adding the nano zinc oxide aqueous suspension into a high-speed stirrer, stirring for 1 hour at the rotating speed of 3200r/min, simultaneously dropwise adding a sodium hydroxide solution within 2 ~ 3 minutes, transferring the solution into a reaction kettle lined with polytetrafluoroethylene, placing the reaction kettle into a homogeneous reactor, reacting for 6 ~ 8 hours at the temperature of 100 ~ 120 ℃, cooling to room temperature after the reaction is finished, centrifugally separating, washing, and drying to finally obtain the nano zinc oxide.
Further, the first metal dopant is one or two of manganese, cobalt, magnesium and barium.
Furthermore, the second metal dopant is formed by mixing any two of iron, aluminum and cerium.
In particular, the first metal dopant is manganese; the second metal dopant is iron and aluminum; the first metal dopant is magnesium; the second metal dopant is iron and cerium; the first metal dopant is cobalt element; the second metal dopant is aluminum and cerium.
The invention has the beneficial effects that: the nano zinc oxide capable of absorbing ultraviolet rays of the invention is doped with more electrons than zinc oxide, when the nano zinc oxide is irradiated by ultraviolet rays, electrons on a valence band can absorb the ultraviolet rays and are excited to a conduction band, and holes and electrons are generated to absorb and scatter the ultraviolet radiation, and the invention has the following excellent effects: by utilizing the compensation of iron ions, aluminum ions and cerium ions 3+, the electron production quantity is increased during the irradiation of ultraviolet rays, so that the absorption of the ultraviolet rays is enhanced.
Detailed Description
Specific example 1: an ultraviolet absorbing nano zinc oxide comprising greater than 99% by weight of a zinc portion, a first manganese dopant portion, and a second iron, aluminum dopant portion; the first manganese dopant moiety and the second iron, aluminum dopant moiety are present in a weight ratio of 0.5-1: 1-1.5;
the preparation method comprises the steps of preparing zinc oxide containing dopants by a sol-gel method through dehydrated zinc acetate, manganese chloride, ferric chloride and aluminum chloride, mixing the zinc oxide prepared by the sol-gel method with water to prepare a nano zinc oxide water suspension with the mass concentration of 5.8%, ultrasonically dispersing for 4 ~ 6 minutes, adding aluminum potassium sulfate with the mass of 1.8% of the nano zinc oxide, adding the nano zinc oxide water suspension into a high-speed stirrer, stirring for 1 hour at the rotating speed of 3200r/min, dropwise adding a sodium hydroxide solution within 2 ~ 3 minutes, transferring the nano zinc oxide water suspension into a reaction kettle lined with polytetrafluoroethylene, placing the reaction kettle into a homogeneous reactor, reacting at 100 ~ 120 ℃ for 6 ~ 8 hours, cooling to room temperature after the reaction is finished, and carrying out centrifugal separation, washing and drying to obtain the nano zinc oxide.
Specific example 2:
an ultraviolet absorbing nano zinc oxide comprising greater than 99% by weight of a zinc portion, a first magnesium dopant portion, and a second iron, cerium dopant portion; the first magnesium dopant moiety and the second iron, cerium dopant moiety are present in a weight ratio of 0.5-1: 1-1.5;
the preparation method comprises the steps of preparing zinc oxide containing dopants by a sol-gel method by utilizing dehydrated zinc acetate, magnesium chloride, ferric chloride and cerium chloride, mixing the zinc oxide prepared by the sol-gel method with water to prepare a nano zinc oxide water suspension with the mass concentration of 5.8%, ultrasonically dispersing for 4 ~ 6 minutes, adding aluminum potassium sulfate with the mass of 1.8% of the nano zinc oxide into a high-speed stirrer, stirring for 1 hour at the rotating speed of 3200r/min, dropwise adding a sodium hydroxide solution within 2 ~ 3 minutes, transferring into a reaction kettle lined with polytetrafluoroethylene, placing the reaction kettle into a homogeneous reactor, reacting at 100 ~ 120 ℃ and 120 ℃ for 6 ~ 8 hours, cooling to room temperature after the reaction is finished, centrifugally separating, washing and drying to obtain the nano zinc oxide.
Specific example 3:
an ultraviolet absorbing nano zinc oxide comprising greater than 99% by weight of a zinc portion, a first cobalt element dopant portion, and a second aluminum, cerium element dopant portion; the first cobalt dopant moiety and the second aluminum, cerium dopant moiety are present in a weight ratio of 0.5-1: 1-1.5;
the preparation method comprises the steps of preparing zinc oxide containing dopants by a sol-gel method by utilizing dehydrated zinc acetate, cobalt chloride, aluminum chloride and cerium chloride, mixing the zinc oxide prepared by the sol-gel method with water to prepare a nano zinc oxide water suspension with the mass concentration of 5.8%, ultrasonically dispersing for 4 ~ 6 minutes, adding aluminum potassium sulfate with the mass of 1.8% of the nano zinc oxide into a high-speed stirrer, stirring for 1 hour at the rotating speed of 3200r/min, dropwise adding a sodium hydroxide solution within 2 ~ 3 minutes, transferring into a reaction kettle lined with polytetrafluoroethylene, placing the reaction kettle into a homogeneous reactor, reacting at 100 ~ 120 ℃ and 120 ℃ for 6 ~ 8 hours, cooling to room temperature after the reaction is finished, centrifugally separating, washing and drying to obtain the nano zinc oxide.
The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.
Claims (6)
1. A nanometer zinc oxide for absorbing ultraviolet rays is characterized in that: comprising greater than 99 wt% of a zinc portion, a first metallic element dopant portion, and a second metallic element dopant portion;
the first metal dopant portion and the second metal dopant portion are present in a weight ratio of 0.5-1: 1-1.5;
the first metal dopant exists in a zinc oxide hexagonal fiber zinc structure in a metal ion 2+ form;
the second metal dopant exists in the form of metal ions 2+ and 3+ in the zinc oxide hexagonal fiber zinc structure or simultaneously;
preparing zinc oxide containing dopant by using dehydrated zinc acetate and chloride through a sol-gel method;
mixing zinc oxide prepared by a sol-gel method with water to prepare a nano zinc oxide aqueous suspension with the mass concentration of 5.8%, ultrasonically dispersing for 4 ~ 6 minutes, adding aluminum potassium sulfate with the mass of 1.8% of the nano zinc oxide, adding the nano zinc oxide aqueous suspension into a high-speed stirrer, stirring for 1 hour at the rotating speed of 3200r/min, simultaneously dropwise adding a sodium hydroxide solution within 2 ~ 3 minutes, transferring the solution into a reaction kettle lined with polytetrafluoroethylene, placing the reaction kettle into a homogeneous reactor, reacting for 6 ~ 8 hours at the temperature of 100 ~ 120 ℃, cooling to room temperature after the reaction is finished, centrifugally separating, washing, and drying to finally obtain the nano zinc oxide.
2. The ultraviolet-absorbing nano zinc oxide according to claim 1, wherein: the first metal dopant is one or two of manganese, cobalt, magnesium and barium.
3. The ultraviolet-absorbing nano zinc oxide according to claim 1, wherein: the second metal dopant is formed by mixing any two of iron, aluminum and cerium.
4. The ultraviolet-absorbing nano zinc oxide according to claim 1, wherein: the first metal dopant is manganese; the second metal dopant is iron and aluminum.
5. The ultraviolet-absorbing nano zinc oxide according to claim 1, wherein: the first metal dopant is magnesium; the second metal dopant is iron and cerium.
6. The ultraviolet-absorbing nano zinc oxide according to claim 1, wherein: the first metal dopant is cobalt element; the second metal dopant is aluminum and cerium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910911687.7A CN110697759A (en) | 2019-09-25 | 2019-09-25 | Ultraviolet-absorbing nano zinc oxide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910911687.7A CN110697759A (en) | 2019-09-25 | 2019-09-25 | Ultraviolet-absorbing nano zinc oxide |
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| CN110697759A true CN110697759A (en) | 2020-01-17 |
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| CN201910911687.7A Pending CN110697759A (en) | 2019-09-25 | 2019-09-25 | Ultraviolet-absorbing nano zinc oxide |
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Citations (9)
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| CN1948221A (en) * | 2006-09-26 | 2007-04-18 | 中国科学院上海硅酸盐研究所 | Method of preparing high temperature ferromagnetism ZnO:(Co,Al) nano-material using sol-gel method |
| CN101591000A (en) * | 2009-06-29 | 2009-12-02 | 彩虹集团公司 | A kind of preparation method of zinc oxide with four-foot shaped micron structure of doping |
| CN102992739A (en) * | 2012-12-17 | 2013-03-27 | 江苏大学 | Preparation method of multifunctional transparent aluminium oxide ceramic |
| CN103074576A (en) * | 2013-02-04 | 2013-05-01 | 清华大学 | ZnO-based diluted magnetic semiconductor thin film and preparation method thereof |
| CN103147073A (en) * | 2013-03-22 | 2013-06-12 | 长春工程学院 | Method for preparing aluminum cobalt co-doped zinc oxide film |
| CN103496732A (en) * | 2013-09-30 | 2014-01-08 | 华南理工大学 | Preparation method of high-conductivity aluminum-doped zinc oxide nano powder |
| CN105084412A (en) * | 2014-05-05 | 2015-11-25 | 强生消费者公司 | Particulate zinc oxide with manganese ion dopant |
| CN105084411A (en) * | 2014-05-05 | 2015-11-25 | 强生消费者公司 | Particulate zinc oxide with manganese, iron and copper dopant ions |
| CN107265494A (en) * | 2017-06-06 | 2017-10-20 | 安徽锦华氧化锌有限公司 | A kind of modified nano zinc oxide |
-
2019
- 2019-09-25 CN CN201910911687.7A patent/CN110697759A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948221A (en) * | 2006-09-26 | 2007-04-18 | 中国科学院上海硅酸盐研究所 | Method of preparing high temperature ferromagnetism ZnO:(Co,Al) nano-material using sol-gel method |
| CN101591000A (en) * | 2009-06-29 | 2009-12-02 | 彩虹集团公司 | A kind of preparation method of zinc oxide with four-foot shaped micron structure of doping |
| CN102992739A (en) * | 2012-12-17 | 2013-03-27 | 江苏大学 | Preparation method of multifunctional transparent aluminium oxide ceramic |
| CN103074576A (en) * | 2013-02-04 | 2013-05-01 | 清华大学 | ZnO-based diluted magnetic semiconductor thin film and preparation method thereof |
| CN103147073A (en) * | 2013-03-22 | 2013-06-12 | 长春工程学院 | Method for preparing aluminum cobalt co-doped zinc oxide film |
| CN103496732A (en) * | 2013-09-30 | 2014-01-08 | 华南理工大学 | Preparation method of high-conductivity aluminum-doped zinc oxide nano powder |
| CN105084412A (en) * | 2014-05-05 | 2015-11-25 | 强生消费者公司 | Particulate zinc oxide with manganese ion dopant |
| CN105084411A (en) * | 2014-05-05 | 2015-11-25 | 强生消费者公司 | Particulate zinc oxide with manganese, iron and copper dopant ions |
| CN107265494A (en) * | 2017-06-06 | 2017-10-20 | 安徽锦华氧化锌有限公司 | A kind of modified nano zinc oxide |
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Application publication date: 20200117 |