CN110304654A - A kind of amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica and preparation method thereof - Google Patents
A kind of amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica and preparation method thereof Download PDFInfo
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Abstract
The present invention provides a kind of amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica and preparation method thereof, and material component includes: SiO2Amorphous photonic crystal and black TiO2, black TiO2And SiO2The mass ratio of amorphous photonic crystal is 1:(0.1~1).Preparation method includes: 1) to prepare black TiO2Nanoparticle powder prepares SiO2Amorphous photonic crystal microballoon powder;2) black TiO2/SiO2The preparation of material: by SiO2Amorphous photonic crystal microballoon powder and black TiO2Nanoparticle powder is dissolved in ethyl alcohol, ultrasonic disperse after stirring, and product is dry.Schemochrome in conjunction with photo-catalysis function, has been broken the existing limitation for absorbing coherent scattering light preparation non-angular using carbon black as back end and relying on colorant by the present invention, and resulting materials have the function of photocatalytic pollutant degradation simultaneously.
Description
Technical field
The invention belongs to schemochrome technical field of material, are related to a kind of multiple based on black titanium dioxide and silica
Amorphous photonic crystal schemochrome material of conjunction and preparation method thereof.
Background technique
The dazzling color for being used to link up and pretend in the Nature is formed by internal complicated structure design.With
Traditional color can only be substituted in application process toward the photon colorant prepared by photonic crystal and amorphous photonic crystal structure,
The following problem of environmental pollution is not can solve.Meanwhile based on photonic crystal preparation schemochrome color it is gorgeous and have rainbow
Color effect, the amorphous photonic crystal schemochrome material that non-angular relies on because its color is soft, meet the visual demand of people and by
Research extensively.
Amorphous photonic crystal structure is because there are coherent scattering light to generate white for it, and researcher is in amorphous photon structure at present
Nanoscale carbon black substance (carbon nanotube, acetylene black, graphene) is introduced as back end and absorbs coherent scattering light
(CN10920143A), it or when synthesizing photon crystal structure unit is heat-treated in atmosphere in the presence of carbon
The schemochrome material (CN105174301A) relied on to non-angular.The structure colorant that non-angular relies on is because its is will never fade and color
Soft characteristic can replace traditional chemical colorant in use, but schemochrome material still can not mitigate in application process
Problem of environmental pollution.
Schemochrome is right because the characteristic of its physics colour generation is widely studied its functionalization by researcher and deep exploration
The structure colorant that the not harsh amorphous photonic crystal structure of actual production conditions realizes that preparation of industrialization non-angular relies on has very
Big possibility, but the introducing of the carbon blacks substance such as light weight and the acetylene black, carbon nanotube and the graphene that are not easy dispersion can only
Absorption coherent scattering light, the function without sunlight degradation of contaminant, and up to the present, the introducing without carbon black substance
The schemochrome material that the non-angular dependence with photocatalytic effect can be prepared also there have been no researcher and carry out exploration report.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of compound based on black titanium dioxide and silica
Amorphous photonic crystal schemochrome material and preparation method thereof, broken and existing absorbed coherent scattering light using carbon black as back end
The limitation that non-angular relies on colorant is prepared, resulting materials have the function of photocatalytic pollutant degradation simultaneously.
The present invention is to be achieved through the following technical solutions:
A kind of amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica, group subpackage
It includes: SiO2Amorphous photonic crystal and black TiO2, black TiO2And SiO2The mass ratio of amorphous photonic crystal is 1:(0.1~1).
Preferably, black TiO2Partial size is between 20~50nm, SiO2Amorphous photonic crystal partial size 180~400nm it
Between.
The preparation side of the amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica
Method, comprising the following steps:
1) black TiO is prepared2Nanoparticle powder prepares SiO2Amorphous photonic crystal microballoon powder;
2) black TiO2/SiO2The preparation of material
By SiO2Amorphous photonic crystal microballoon powder and black TiO2Nanoparticle powder is dissolved in ethyl alcohol, is surpassed after stirring
Sound dispersion, products therefrom is dry, obtains the amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica
Material.
Preferably, in step 1), black TiO is prepared2Nanoparticle powder is specifically: by TiO2And NaHB4Mixed grinding,
Then it is heat-treated under vacuum conditions, washs after the completion of heat treatment, is dried to obtain black TiO2Nanoparticle powder.
Further, TiO2And NaHB4Mass ratio be 4:(0.25~1.5).
Further, milling time is 1~3h, and heat treatment temperature is 250~400 DEG C, and heat treatment time is 0.5~4h.
Preferably, in step 1), SiO is prepared2Amorphous photonic crystal microballoon powder is specifically: by the ethyl alcohol of ethyl orthosilicate
Solution instills in the ethanol solution of ammonium hydroxide, makes 0.1~0.6mol/L of ammonia concn, ethyl orthosilicate concentration for 0.4~
1.2mol/L is stirred to react, and is centrifuged after the reaction was completed, washs, is dried to obtain SiO2Microballoon powder.
Further, the temperature being stirred to react is 25~50 DEG C.
Preferably, in step 2), the ultrasonic disperse time is 2~12h.
Compared with prior art, the invention has the following beneficial technical effects:
The present invention by schemochrome in conjunction with photo-catalysis function, using the black titanium dioxide (B- with photocatalysis performance
TiO2) coherent scattering light of the nanoparticle as black back end absorption silica amorphous photonic crystal, with silica amorphous
The structural unit of photonic crystal is mixed to get the structure colorant of the dependence of the non-angular with photocatalytic effect.White titania because
Its forbidden bandwidth 3.2eV makes it absorb optical range in UV light region, and black titanium dioxide can widen the absorption region of light
Structure colorant to visible light region, therefore non-angular dependence of the invention has good photocatalytic effect, black by controlling
The content of color titanium dioxide can control the coloration and photocatalysis effect of schemochrome, the pollution in degradable colorant use environment
The practical application that object is schemochrome in conjunction with photo-catalysis function provides new thinking.The introducing of black titanium dioxide may be implemented
The mass production for the colorant that the non-angular of inorganic material with photo-catalysis function relies on mentions for colorant industry environmental protection development
For new direction.
Further, regulate and control SiO2The coloury schemochrome that the adjustable non-angular of the available tone of partial size relies on.
The present invention utilizes ultrasonic blend method by nanoscale B-TiO2With SiO2Microballoon mixing, one-step method are obtained with light
The B-TiO of catalysis2/SiO2Non-angular rely on amorphous photonic crystal schemochrome material.Preparation process of the present invention is simple,
Spherical SiO2For B-TiO2Attachment site is provided, reduction and the oxygen of specific surface area caused by the aggregation of black titanium dioxide are avoided
The generation of vacancy defect efficiently separates electron hole pair generation.
Further, black titanium dioxide nanoparticle, B-TiO are prepared in a vacuum with chemical reduction method2Preparation process
In, by controlling reduction temperature, TiO2Black titanium dioxide nanoparticle is controlled with the mass ratio and soaking time of sodium borohydride
In Lacking oxygen base blackness, make to obtain photocatalysis performance it is excellent being capable of monodispersed black titanium dioxide nanoparticle.
Further, SiO can be regulated and controled by the concentration of control reaction temperature, ammonia volume and ethyl orthosilicate2Microballoon
Size can be used as the structural unit for preparing the amorphous photonic crystal of colourful schemochrome.
Detailed description of the invention
Fig. 1 is material object display, and black titanium dioxide nanoparticle prepared by (a) embodiment 1, (b) prepared by embodiment 1
Silica white powder, (c) B-TiO prepared by embodiment 12/SiO2Green powder;
Fig. 2 is B-TiO prepared by embodiment 12/SiO2The X-ray diffractogram of green powder;
Fig. 3 is the B-TiO with photocatalytic effect prepared by embodiment 12/SiO2Amorphous photon structure color material it is ultraviolet
It can be seen that diffusing reflection map;
Fig. 4 is B-TiO prepared by embodiment 12Amorphous photon structure color material amplifies 110k under field emission scanning electron microscope
SEM figure;
Fig. 5 is SiO prepared by embodiment 12@TiO2Amorphous photon structure color material amplifies 10k under field emission scanning electron microscope
SEM figure, illustration is two-dimentional Fourier transform figure;
Fig. 6 is B-TiO prepared by embodiment 12/SiO2To the photocatalytic degradation figure of rhodamine B.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
A kind of amorphous with photocatalytic effect compound based on black titanium dioxide and silica disclosed by the invention
Photonic crystal structure color material the preparation method comprises the following steps:
1) black TiO2(B-TiO2) nanoparticle preparation
By 4:(0.25~1.5) mass ratio weigh P25 (TiO2) and NaHB4, it is ground with agate mortar, after mixing,
It is warming up to reaction temperature with the heating rate of 7 DEG C/min, is heat-treated certain time, natural cooling cooling in a vacuum.It has reacted
At rear washing, it is dried to obtain B-TiO2Nano-powder.
2)SiO2The preparation of microballoon
The ethanol solution of ethyl orthosilicate is instilled in the ethanol solution of ammonium hydroxide, makes ammonia concn 0.1-0.6mol/L,
Ethyl orthosilicate concentration is 0.4-1.2mol/L, is stirred to react, is centrifuged after the reaction was completed, washs, is dried to obtain SiO2Microballoon powder
Body;
3)B-TiO2/SiO2The preparation of material
By 1:(0.1~1) mass ratio weigh SiO2Powder and B-TiO2Powder, will in the ratio of (1~2) g:50ml
SiO2Powder is dissolved in ethyl alcohol, and corresponding B-TiO is then added2Powder stirs ultrasonic disperse certain time after 2h, sufficiently anti-
Should after be dried at room temperature for, obtain the amorphous photon with photocatalytic effect compound based on black titanium dioxide and silica
Crystal structure color material.
In step 1), milling time is 1~3h, and reaction temperature is 250~400 DEG C, and soaking time is 0.5~4h.It is described
Washing be to be dried at room temperature for deionized water and dehydrated alcohol cross washing 4 times.The nanosphere that nano-powder refers to exists
Between 20-50nm.
In step 2), reaction temperature is 25~50 DEG C, SiO2Microspherulite diameter is between 180~400nm.
In step 3), mixing speed is 600r/min, and the sufficient reaction time is ultrasonic disperse 2-12h.
Embodiment 1
A kind of amorphous photonic crystal structure with photocatalytic effect compound based on black titanium dioxide and silica
Color material and preparation method thereof, comprising the following steps:
1) black TiO2(B-TiO2) nanoparticle preparation
P25 (TiO is weighed by the mass ratio of 4:0.52) and NaHB4, ground with agate mortar, after mixing, with 7 DEG C/
The heating rate of min is warming up to 380 DEG C, in a vacuum 380 DEG C of heat treatment 3h, natural cooling cooling.Spend after the reaction was completed from
Sub- water and ethyl alcohol cross washing 4 times are dried to obtain B-TiO at room temperature2Nano-powder.
2)SiO2The preparation of microballoon
The ethanol solution of ethyl orthosilicate is instilled in the ethanol solution of ammonium hydroxide, makes ammonia concn 0.1mol/L, positive silicon
Acetoacetic ester concentration is 0.8mol/L, is stirred to react 4h at 36 DEG C, is centrifuged, washs after the reaction was completed, being dried to obtain 320nm diameter
SiO2The powder of microballoon;
3)B-TiO2/SiO2The preparation of material
SiO is weighed by the mass ratio of 1:12Powder and B-TiO2Powder, in the ratio of 2g:50ml by SiO2Powder is dissolved in
In ethyl alcohol, corresponding B-TiO is then added2Powder stirs ultrasonic disperse 8h after 4h, is sufficiently dried at room temperature for, obtains after reaction
To the amorphous photonic crystal schemochrome material with photocatalytic effect compound based on black titanium dioxide and silica.
Sample through the amorphous photon structure color material made from the present embodiment with photocatalytic effect is as shown in Figure 1, green
The powder of color has soft color.If Fig. 2 is its X ray diffracting spectrum, 2 θ=25.28 ° of the angle of diffraction, 36.95 °, 48.05 °,
53.89 °, 55.06 °, 62.69 °, 68.76 ° respectively correspond TiO2(101), (103), (200), (105), (204) and (116)
Crystal face, the SiO formed due to sol gel process2It is noncrystal, this demonstrate that sample is the TiO of pure Anatase2Nano particle
With SiO2It is blended;The UV-vis DRS spectrum of Fig. 3 shows B-TiO2/SiO2Ultraviolet light and part before absorbable 400nm
Visible light, and occur reflection peak at 525nm, the relationship one of the microspherulite diameter and wavelength that are reacted with Bragg diffraction law
It causes, the green light band (480-560nm) in 248 nanometers of corresponding visible-ranges;Fig. 4 is the B-TiO prepared in embodiment 12
Nano-powder, it can be seen that black titanium dioxide nanoparticle is between 20-50nm in figure.Fig. 5 is 1 gained B- of embodiment
TiO2/SiO2SEM figure, it can be seen from the figure that there is B-TiO between the smooth silicon dioxide microsphere of uniform particle diameter2
Nanoparticle, SiO2The black titanium dioxide that is introduced as provide attachment site, improve B-TiO2Dispersibility and specific surface
Product.The B-TiO obtained after the Fourier transform in Fig. 5 illustration shows black titanium dioxide and silica is compound2/SiO2It is
Amorphous photonic crystal structure has the characteristics of longrange disorder, shortrange order.Fig. 6 is the resulting B-TiO of embodiment 12/SiO2To sieve
The photocatalytic degradation figure of red bright B, black titanium dioxide and silica it is compound after obtained B-TiO2/SiO2It passes through under ultraviolet light
It crosses 60min and 83% has been reached to the degradation rate of RhB.It can be seen that the introducing of black titanium dioxide not only absorbs white silica
Middle coherent scattering light, display color, and photocatalysis performance is promoted, realize one-step synthesis color it is soft there is light
The amorphous photon structure color material of catalytic effect.
Embodiment 2
1) black TiO2(B-TiO2) nanoparticle preparation
P25 (TiO is weighed by the mass ratio of 4:0.252) and NaHB4, ground with agate mortar, after mixing, with 7 DEG C/
The heating rate of min is warming up to 250 DEG C, in a vacuum 250 DEG C of heat treatment 2h, natural cooling cooling.Spend after the reaction was completed from
Sub- water and ethyl alcohol cross washing 4 times are dried to obtain B-TiO at room temperature2Nano-powder.
2)SiO2The preparation of microballoon
The ethanol solution of ethyl orthosilicate is instilled in the ethanol solution of ammonium hydroxide, makes ammonia concn 0.2mol/L, positive silicon
Acetoacetic ester concentration is 0.4mol/L, is stirred to react 6h at 25 DEG C, is centrifuged, washs after the reaction was completed, being dried to obtain 180nm diameter
SiO2The powder of microballoon;
3)B-TiO2/SiO2The preparation of material
SiO is weighed by the mass ratio of 1:0.12Powder and B-TiO2Powder, in the ratio of 1g:50ml by SiO2Powder dissolution
In ethyl alcohol, corresponding B-TiO is then added2Powder stirs ultrasonic disperse 10h after 2h, is sufficiently dried at room temperature for after reaction,
Obtain the amorphous photonic crystal schemochrome material with photocatalytic effect compound based on black titanium dioxide and silica.
Embodiment 3
1) black TiO2(B-TiO2) nanoparticle preparation
P25 (TiO is weighed by the mass ratio of 4:0.252) and NaHB4, ground with agate mortar, after mixing, with 7 DEG C/
The heating rate of min is warming up to 280 DEG C, in a vacuum 280 DEG C of heat treatment 4h, natural cooling cooling.Spend after the reaction was completed from
Sub- water and ethyl alcohol cross washing 4 times are dried to obtain B-TiO at room temperature2Nano-powder.
2)SiO2The preparation of microballoon
The ethanol solution of ethyl orthosilicate is instilled in the ethanol solution of ammonium hydroxide, makes ammonia concn 0.4mol/L, positive silicon
Acetoacetic ester concentration is 0.8mol/L, is stirred to react 6h at 50 DEG C, is centrifuged, washs after the reaction was completed, being dried to obtain 240nm diameter
SiO2The powder of microballoon;
3)B-TiO2/SiO2The preparation of material
SiO is weighed by the mass ratio of 1:0.52Powder and B-TiO2Powder, in the ratio of 1g:50ml by SiO2Powder dissolution
In ethyl alcohol, corresponding B-TiO is then added2Powder stirs ultrasonic disperse 12h after 3h, is sufficiently dried at room temperature for after reaction,
Obtain the amorphous photonic crystal schemochrome material with photocatalytic effect compound based on black titanium dioxide and silica.
Embodiment 4
1) black TiO2(B-TiO2) nanoparticle preparation
P25 (TiO is weighed by the mass ratio of 4:1.02) and NaHB4, ground with agate mortar, after mixing, with 7 DEG C/
The heating rate of min is warming up to 400 DEG C, in a vacuum 400 DEG C of heat treatment 4h, natural cooling cooling.Spend after the reaction was completed from
Sub- water and ethyl alcohol cross washing 4 times are dried to obtain B-TiO at room temperature2Nano-powder.
2)SiO2The preparation of microballoon
The ethanol solution of ethyl orthosilicate is instilled in the ethanol solution of ammonium hydroxide, makes ammonia concn 0.6mol/L, positive silicon
Acetoacetic ester concentration is 1.2mol/L, is stirred to react 4h at 30 DEG C, is centrifuged, washs after the reaction was completed, being dried to obtain 400nm diameter
SiO2The powder of microballoon;
3)B-TiO2/SiO2The preparation of material
SiO is weighed by the mass ratio of 1:0.12Powder and B-TiO2Powder, in the ratio of 2g:50ml by SiO2Powder dissolution
In ethyl alcohol, corresponding B-TiO is then added2Powder stirs ultrasonic disperse 2h after 3h, is sufficiently dried at room temperature for after reaction,
Obtain the amorphous photonic crystal schemochrome material with photocatalytic effect compound based on black titanium dioxide and silica.
In conclusion it is disclosed by the invention it is a kind of based on black titanium dioxide and silica it is compound have photocatalysis effect
Amorphous photonic crystal schemochrome material answered and preparation method thereof, two including black titanium dioxide nanoparticle and different-grain diameter
The preparation of silicon oxide microsphere;The P25 and NaBH of different proportion are calcined in a vacuum4, black thus to obtain what is be reduced in various degree
- the B-TiO containing different Lacking oxygens is obtained after color titanium dioxide, deionized water and washes of absolute alcohol2Nanoparticle;Oxygen is empty
The appearance of position reduces the forbidden bandwidth of the 3.2eV of white titania, widen black titanium dioxide photochemical catalyst to light
Absorption region.Prepare the SiO of different-grain diameter2Structural unit as photonic crystal can prepare the schemochrome material of different colours.
The introducing of black titanium dioxide nanoparticle can prepare the schemochrome with photocatalytic effect of different colours not only with one-step method
Material, additionally it is possible to by the coloration for regulating and controlling the adjusted and controlled color material of content of black titanium dioxide.It is direct using ultrasonic blending method
The amorphous photonic crystal structure colorant that the color with photocatalytic effect of synthesis is different can satisfy production and living to environmentally friendly color
The demand of material, Materials of the schemochrome in conjunction with photo-catalysis function have a extensive future.
The present invention has the amorphous photonic crystal schemochrome material B-TiO of photo-catalysis function2/SiO2Using ultrasonic blending method
Preparation, black titanium dioxide adhere on silicon dioxide microsphere surface, and the schemochrome material color of preparation is soft and various colors, together
When, the additional amount of black titanium dioxide is adjustable to the coloration and photocatalysis performance of schemochrome.The amorphous photonic crystal of preparation
The schemochrome material that the non-angular that schemochrome material has the color of photocatalysis performance gorgeous relies on has been broken existing with carbon black
The limitation that coherent scattering light preparation non-angular relies on colorant is absorbed as back end, one-step method realizes the structure of non-angular dependence
The combination of color and photocatalysis performance.
Claims (9)
1. a kind of amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica, which is characterized in that
Its component includes: SiO2Amorphous photonic crystal and black TiO2, black TiO2And SiO2The mass ratio of amorphous photonic crystal is 1:
(0.1~1).
2. the amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica according to claim 1
Material, which is characterized in that black TiO2Partial size is between 20~50nm, SiO2Amorphous photonic crystal partial size is between 180~400nm.
3. the amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica of any of claims 1 or 2
The preparation method of material, which comprises the following steps:
1) black TiO is prepared2Nanoparticle powder prepares SiO2Amorphous photonic crystal microballoon powder;
2) black TiO2/SiO2The preparation of material
By SiO2Amorphous photonic crystal microballoon powder and black TiO2Nanoparticle powder is dissolved in ethyl alcohol, ultrasound point after stirring
It dissipates, products therefrom is dry, obtains the amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica.
4. the amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica according to claim 3
The preparation method of material, which is characterized in that in step 1), prepare black TiO2Nanoparticle powder is specifically: by TiO2And NaHB4
Then mixed grinding is heat-treated under vacuum conditions, wash after the completion of heat treatment, be dried to obtain black TiO2Nanoparticle powder
Body.
5. the amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica according to claim 4
The preparation method of material, which is characterized in that TiO2And NaHB4Mass ratio be 4:(0.25~1.5).
6. the amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica according to claim 4
The preparation method of material, which is characterized in that milling time is 1~3h, and heat treatment temperature is 250~400 DEG C, and heat treatment time is
0.5~4h.
7. the amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica according to claim 3
The preparation method of material, which is characterized in that in step 1), prepare SiO2Amorphous photonic crystal microballoon powder is specifically: by positive silicic acid
The ethanol solution of ethyl ester instills in the ethanol solution of ammonium hydroxide, makes 0.1~0.6mol/L of ammonia concn, ethyl orthosilicate concentration is
0.4~1.2mol/L is stirred to react, and is centrifuged after the reaction was completed, washs, is dried to obtain SiO2Microballoon powder.
8. the amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica according to claim 7
The preparation method of material, which is characterized in that the temperature being stirred to react is 25~50 DEG C.
9. the amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica according to claim 3
The preparation method of material, which is characterized in that in step 2), the ultrasonic disperse time is 2~12h.
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WO2023013657A1 (en) * | 2021-08-06 | 2023-02-09 | Agc株式会社 | Structural color particles and structural color pigment containing structural color particles |
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CN111468375A (en) * | 2020-03-10 | 2020-07-31 | 浙江工业大学 | Rapid preparation method of angle-dependence-free structural color material |
CN111592626A (en) * | 2020-05-25 | 2020-08-28 | 陕西科技大学 | MXenes-Ti3C2TxModified structural color elastic film and preparation method thereof |
CN111592626B (en) * | 2020-05-25 | 2022-08-19 | 陕西科技大学 | MXenes-Ti 3 C 2 T x Modified structural color elastic film and preparation method thereof |
CN111849203A (en) * | 2020-07-20 | 2020-10-30 | 陕西科技大学 | Amorphous photonic crystal structure color pigment with photocatalytic performance and preparation method thereof |
CN112194143A (en) * | 2020-08-25 | 2021-01-08 | 陕西科技大学 | Preparation method of structural color-generating material with photocatalytic effect and stable structure |
CN113354959A (en) * | 2021-06-18 | 2021-09-07 | 复旦大学 | Method for producing a colorant having a target color and colorant |
WO2023013657A1 (en) * | 2021-08-06 | 2023-02-09 | Agc株式会社 | Structural color particles and structural color pigment containing structural color particles |
CN113816417A (en) * | 2021-10-20 | 2021-12-21 | 西北大学 | Black gallium oxide nano-particles and preparation method thereof |
CN115067359A (en) * | 2022-06-21 | 2022-09-20 | 重庆德强化工有限公司 | Ag ion-loaded black TiO 2 Nano photocatalytic bactericidal material and preparation method thereof |
CN115067359B (en) * | 2022-06-21 | 2024-03-19 | 重庆德强化工有限公司 | Ag ion-loaded black TiO 2 Nanometer photocatalysis sterilization material and preparation method thereof |
CN117899864A (en) * | 2024-03-15 | 2024-04-19 | 四川大学 | Method for preparing copper-loaded black titanium dioxide at room temperature and copper-loaded black titanium dioxide |
CN117899864B (en) * | 2024-03-15 | 2024-06-07 | 四川大学 | Method for preparing copper-loaded black titanium dioxide at room temperature and copper-loaded black titanium dioxide |
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