CN114404314A - Sun-screening compound and preparation method and application thereof - Google Patents
Sun-screening compound and preparation method and application thereof Download PDFInfo
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- CN114404314A CN114404314A CN202210222129.1A CN202210222129A CN114404314A CN 114404314 A CN114404314 A CN 114404314A CN 202210222129 A CN202210222129 A CN 202210222129A CN 114404314 A CN114404314 A CN 114404314A
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- zif
- sunscreen
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/58—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
- A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/56—Compounds, absorbed onto or entrapped into a solid carrier, e.g. encapsulated perfumes, inclusion compounds, sustained release forms
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Abstract
The invention discloses a sunscreen compound, a preparation method and application thereof, wherein the sunscreen compound is prepared from carbon nitride g-C with a planar two-dimensional lamellar structure similar to graphene3N4Forming with zinc zeolite imidazolate framework ZIF-8 loaded on the compound, the preparation method is simple, the mass production is easy, and the sun-proof compound g-C3N4@ ZIF-8 can be used as sunscreen additive material for cosmetic.
Description
Technical Field
The invention relates to a sunscreen compound and a preparation method thereof, in particular to g-C3N4A process for the preparation of @ ZIF-8 complexes.
Background
Ultraviolet (UV) radiation refers to radiation having a wavelength of 400nm to 10 nm. Ultraviolet rays in sunlight are roughly classified into 3 types, namely UVA (wavelength of 400 nm-320 nm), UVB (wavelength of 320 nm-280 nm) and UVC (wavelength of 280 nm-100 nm). Ultraviolet rays cause skin wrinkles, aging, sagging, dark spots, etc. Sunscreen products are products that primarily protect against ultraviolet radiation in the UVA and UVB bands, since UVC is absorbed by the ozone layer in the atmosphere before reaching the ground.
Physical sunscreens are mostly inorganic, typically zinc oxide (anti-UVA and UVB), titanium dioxide (anti-UVB), of which titanium dioxide has been the mainstream in the cosmetic market. However, in 18.2.2020, through the discussion of the last 10 years, the european union committee finally lists titanium dioxide as 2 kinds of suspected carcinogens by resolution, and the new regulations require: after 18 months, any powder type product containing titanium dioxide, as long as the titanium dioxide content is 1% or more and the aerodynamic particle diameter is 10 μm or less, must be labeled "absorbable harmful substance may be formed at the time of use".
g-C with approximate graphene planar two-dimensional lamellar structure3N4Has strong absorption effect on ultraviolet rays. Zeolite imidazolate framework material ZIF-8 is a metal-organic zeolite analogue with a tetrahedral framework structure formed by coordination crosslinking of organic imidazolate (ligand) and transition metal ions.
In the prior art, g-C3N4Is compounded with various substances to improve the application range and the convenience. There are also many composite preparation methods, most of which are directed to the invention for catalyst, coating and the like applications.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a novel sunscreen compound g-C3N4@ ZIF-8, a preparation method and skin sunscreen application of the compound.
Technical scheme
First, a sunscreen composition comprising g-C is provided3N4And a load in the g-C3N4The zeolite imidazolate framework material is composed of zeolite imidazolate framework ZIF-8 ligand and zinc ions.
Preferably, the zeolite imidazolate framework ZIF-8 ligand is 2-methylimidazole.
Thirdly, a preparation method of the sunscreen compound is provided, which comprises the following steps:
(1) g to C3N4The powder is suspended in deionized water and mixed evenly to prepare 0.01-25% (W/V) g-C3N4A suspension;
(2) preparing a ZIF-8 ligand solution with the molar concentration of 0.5-1.5 mol/L, wherein a solvent is selected from water or ethanol, and a solute is 2-methylimidazole;
(3) preparing a zinc salt solution with the molar concentration of 0.1-1 mol/L, wherein the solvent of the zinc salt solution is selected from water or ethanol, and the solute is selected from one of zinc nitrate, zinc sulfate and zinc chloride;
(4) subjecting g-C described in step (1)3N4The volume ratio of the suspension to the ZIF-8 ligand solution in the step (2) to the zinc salt solution in the step (3) is 2-15: 2-15: 0.2-1.5, stirring and reacting for 0.1-24 hours at room temperature, collecting solid components, washing with water and drying to obtain the sunscreen compound g-C3N4@ZIF-8。
Furthermore, the invention provides an application of the sun-proof compound g-C3N4@ ZIF-8 is added into cosmetic base material for use, preferably, the sunscreen compound g-C3N4The weight ratio of the @ ZIF-8 to the cosmetic base material is 1-10% (W/W).
Advantageous effects
Sunscreen Compound g-C of the invention3N4The preparation method of @ ZIF-8 is simple, and the obtained sunscreen compound g-C3N4@ ZIF-8 is suitable for use as a sunscreen additive in cosmetics. The Sun Protection Factor (SPF) value of the protection UVB measured by a sun protection factor tester is 30, and the tanning index (PA) of the protection UVA measured is +++.
Drawings
FIG. 1: scanning electron microscopy images of the sunscreen complex g-C3N4 @ ZIF-8 solid of example 1.
FIG. 2: x-ray diffraction analysis (XRD) of the sunscreen complex g-C3N4 @ ZIF-8 solid of example 1.
FIG. 3: light absorption curves for different wavelengths of the sunscreen complex g-C3N4 @ ZIF-8 solid of example 1.
Detailed description of the invention
The technical solution of the present invention will be described below with specific examples, which are not intended to limit the concept of the technical solution of the present invention.
Example 1:
(1) g to C3N4The powder was suspended in deionized water to give 0.01%, (W/V) g-C3N4Suspending liquid;
(2) preparing 2-methylimidazole aqueous solution with the concentration of 1.5 mol/L;
(3) preparing a zinc nitrate aqueous solution with the concentration of 0.1 mol/L;
(4) 2mL of prepared g-C3N4Quickly adding 2mL of prepared 2-methylimidazole solution and 0.2mL of zinc nitrate solution into the suspension, and stirring for reacting for 24 hours;
(5) centrifugally separating and collecting the compound g-C in the suspension3N4@ ZIF-8 solid.
Example 2:
(1) g to C3N4The powder was suspended in ethanol at a ratio of 25% (W/V));
(2) preparing a 2-methylimidazole ethanol solution with the concentration of 0.5 mol/L;
(3) preparing a zinc nitrate ethanol solution with the concentration of 1 mol/L;
(4) taking g-C prepared in the step (1)3N4Adding 15mL of the 2-methylimidazole solution prepared in the step (2) and 1.5mL of the zinc nitrate solution prepared in the step (3) into 2mL of the suspension, and stirring for 24 hours;
(5) centrifugally separating and collecting g-C in the suspension3N4@ ZIF-8 complex solid.
Example 3: (addition of g-C3N4@ ZIF-8 Complex solid in cosmetics
The sample of example 2 was added to a cosmetic base at 10% (W/W) and applied to form a test specimen, which was tested for a protection against UVB with a Sun Protection Factor (SPF) value of 30 and a protection against UVA with a tanning index (PA) of +++++.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (4)
1. A sunscreen composition comprising g-C3N4And a load in the g-C3N4Of (A) zeoliteZeolite imidazolate framework material consisting of azolate framework ZIF-8 ligand and zinc ions.
2. A sunscreen complex as claimed in claim 1 characterized in that said zeolitic imidazolate framework ZIF-8 ligand is 2-methylimidazole.
3. A method of preparing a sunscreen complex comprising the steps of:
(1) g to C3N4The powder is suspended and mixed with deionized water uniformly to prepare 0.01 to 25 percent (W/V) g-C3N4A suspension;
(2) preparing a ZIF-8 ligand solution with the molar concentration of 0.5-1.5 mol/L, wherein a solvent is selected from water or ethanol, and a solute is 2-methylimidazole;
(3) preparing a zinc salt solution with the molar concentration of 0.1-1 mol/L, wherein the solvent of the zinc salt solution is selected from water or ethanol, and the solute is selected from one of zinc nitrate, zinc sulfate and zinc chloride;
(4) subjecting g-C described in step (1)3N4The volume ratio of the suspension to the ZIF-8 ligand solution in the step (2) to the zinc salt solution in the step (3) is 2-15: 2-15: 0.2-1.5, stirring and reacting for 0.1-24 hours at room temperature, collecting solid components, washing with water and drying to obtain the sunscreen compound g-C3N4@ ZIF-8 powder.
4. Use of a sunscreen complex, characterized in that a sunscreen complex g-C according to any of claims 1 to 2 is used3N4@ ZIF-8 is added into cosmetic base material, and the sunscreen compound g-C3N4The weight ratio of the @ ZIF-8 to the cosmetic base material is 1-10% (W/W).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210222129.1A CN114404314A (en) | 2022-03-09 | 2022-03-09 | Sun-screening compound and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210222129.1A CN114404314A (en) | 2022-03-09 | 2022-03-09 | Sun-screening compound and preparation method and application thereof |
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| CN114404314A true CN114404314A (en) | 2022-04-29 |
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| CN202210222129.1A Pending CN114404314A (en) | 2022-03-09 | 2022-03-09 | Sun-screening compound and preparation method and application thereof |
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- 2022-03-09 CN CN202210222129.1A patent/CN114404314A/en active Pending
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