CN101691672A - Method for preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling surfactant - Google Patents
Method for preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling surfactant Download PDFInfo
- Publication number
- CN101691672A CN101691672A CN200910196313A CN200910196313A CN101691672A CN 101691672 A CN101691672 A CN 101691672A CN 200910196313 A CN200910196313 A CN 200910196313A CN 200910196313 A CN200910196313 A CN 200910196313A CN 101691672 A CN101691672 A CN 101691672A
- Authority
- CN
- China
- Prior art keywords
- bromide
- superstructure
- adjusting
- kettle
- bismuthyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention belongs to the fields of nano/micron material preparation technology and hydro-thermal synthesis technology, and particularly relates to a method for preparing a nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling a surfactant. The method comprises the following steps: using bismuth nitrate, sodium bromide or hexadecyl trimethyl ammonium bromide as a reactant, adding PEG4000 or PVP4000 as an adjusting and controlling agent, using ethanediol as a solvent, preparing a precursor solution under ultrasonic agitation, and moving the precursor solution into a hydro-thermal reaction kettle in a packing ratio of between 60 and 80 percent; putting the hydro-thermal reaction kettle filled with the mixture into a box-type resistance furnace, heating the kettle to a temperature of between 90 and 150 DEG C, keeping the temperature for 2 to 48 hours, taking the kettle out of the furnace, and cooling the kettle to the room temperature naturally; and washing and centrifugally separating the mixture in the kettle to obtain the required product. The method has the advantages of simple process, easy construction of a whole preparation system, simple and convenient operation, easily controlled condition, low cost, easily controlled product shape and size, high purity, good crystallinity and convenient processing of the product, and is suitable for large scale industrial production.
Description
Technical field
The invention belongs to nano/micron material preparation technology and hydro-thermal synthesis technical field, be specifically related to a kind of method of tensio-active agent preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling.
Background technology
Bismuth belongs to p-block element, and its valence state in oxygenatedchemicals is generally+3 valencys.Bi
3+Outermost layer s electronic shell in have two valence electron 6S
2In oxide system, because the s occupied orbital of Bi and the s and the interorbital strong antibonding of p of oxygen often will obtain coordination more favourable on the energy by the distortion of local coordination environment.Symmetric reduction helps forming hydridization between s track (HOMO) that ion is full of and the empty p track (LUMO), thereby causes Bi
3+On have the formation of three-dimensional active lone-pair electron. have the Bi of lone-pair electron
3+The asymmetrical coordination environment that its ligand symmetry centre of ion deflection causes will make and contain Bi
3+Oxide compound produce a series of interesting physical propertiess, comprise ferroelectricity, non-linear optical effect, photoelectricity and electrooptical property, catalysis and photocatalysis characteristic etc.Bismuthyl bromide is as a class lamellar compound, has the same sheet structure of image-stone China ink, is the novel semiconductor material of a class, has unique electronic structure, good optical performance and catalytic performance, thereby attracted investigator's extensive concern.Yet above-mentioned character often depends on the pattern and the size of bismuthyl bromide.The bismuthyl bromide nano/micron material of therefore synthetic different-shape and size is the target that people extensively pursue.
The method of the synthetic bismuthyl bromide of having reported mainly is pH value control method, be the bismuth source with bismuthous oxide bismuth trioxide or Bismuth trinitrate, thereby come the pH value of regulation system to obtain the target product bismuthyl bromide with Hydrogen bromide, ammoniacal liquor.Though aforesaid method provides the approach of extensive synthetic bismuthyl bromide nano/micron material, but still exist not enough: because himself Growth Habit of bismuthyl bromide, the sheet structure of the single often nano/micron level of products therefrom, and the size of product is wayward.The adjusting of solution acidity also can cause higher, the complex process of production cost in addition, is unfavorable for environment protection and reasonable resources application.
Summary of the invention
The method that the object of the invention is to propose that a kind of pattern is controlled, yardstick homogeneous, high purity, processing are convenient, be easy to industrialized tensio-active agent preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling.
The present invention adopts the solvent thermal synthetic system, with ethylene glycol is solvent, is the realization response of bromine source with Bismuth trinitrate as bismuth source, Sodium Bromide or cetyl trimethylammonium bromide (CTAB), under the regulation and control of polyoxyethylene glycol (PEG4000) or polyvinylpyrrolidone (PVP4000), synthesized the yardstick homogeneous on a large scale, had the bismuthyl bromide superstructure by the nanometer sheet assembling (flower-like structure and rose-shaped structure, Pistacia vera shape and multi-layer steamed bread shape structure and twin superstructure that the bobbles shape structure of sheet assembling, sheet are intersected) of regular morphology.The present invention realizes control to the product pattern by changing adjusting control agent and reaction times.
The method of the tensio-active agent preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling that the present invention proposes, its concrete steps are as follows:
(1) with Bismuth trinitrate, Sodium Bromide or cetyl trimethylammonium bromide (CTAB) are reactant, add polyoxyethylene glycol (PEG4000) or polyvinylpyrrolidone (PVP4000) as adjusting control agent, with ethylene glycol is solvent, stirred in the ultransonic while and to make the reactant homodisperse obtain precursor solution, precursor solution is moved in the hydrothermal reaction kettle with suction pipe.Wherein the mol ratio of Bismuth trinitrate and Sodium Bromide or cetyl trimethylammonium bromide is 1: 0.5-1: 2, and PEG4000 or the PVP4000 concentration in reaction system is 0.022g/mL, the add-on of ethylene glycol is the 60-80% of container volume;
(2) place chamber type electric resistance furnace to be heated to 90-150 ℃ the hydrothermal reaction kettle that compound is housed in the step (1), and under this temperature, heat 2-48h, take out container, naturally cool to room temperature;
(3) washing, centrifugation promptly gets desired product.
Among the present invention, described Bismuth trinitrate, Sodium Bromide, cetyl trimethylammonium bromide, PEG4000 and PVP4000 purity are not less than chemical pure.
Among the present invention, washing described in the step (3) adopts deionized water, dehydrated alcohol alternately to wash synthetic product, generally alternately washs 3-6 time.
The structure of the inventive method products therefrom, pattern, composition characterize, and select X ray powder art diffraction (XRD), scanning electronic microscope (SEM), UV, visible light diffuse-reflectance (DRS) etc. respectively for use; And its visible light catalytic performance studied.
The invention has the advantages that:
1. the present invention is a solvent with ethylene glycol at a lower temperature, has realized extensive the synthesizing of the nanometer sheet assembling bismuthyl bromide superstructure of multiple pattern under the regulation and control of tensio-active agent, is inorganic synthetic a kind of new route of synthesis that provides.
2. the present invention uses simple solvent thermal reaction, does not need to regulate and control the potential of hydrogen of reaction solution, has simplified the operation steps of traditional solution reaction, makes technology simpler, is convenient to the industrialization operation.
3. the obtained product pattern of the present invention, size are easily controlled, the purity height, and better crystallinity degree and product are handled convenient, are suitable for large-scale commercial production.
4. the product of the present invention's preparation has good visible light photocatalysis performance, can be used as visible light catalyst, effectively utilize the sun power degrading organic contaminant in wastewater and the catalytic decomposition seawater is produced hydrogen, pollute and the energy scarcity problem to solve day by day serious environmental.
Description of drawings
Fig. 1 is the XRD figure of embodiment 1 products therefrom under the different reaction times, and wherein curve a is 3 hours, and b is 6 hours, and c is 18 hours, and d is 24 hours.
Fig. 2 is the SEM figure of embodiment 1 products therefrom under the different reaction times, and wherein curve a is 3 hours, and b is 6 hours, and c is 18 hours, and d is 24 hours.
Fig. 3 is that embodiment 2 schemes at the SEM of different reaction times products therefroms, and wherein curve a is 6 hours, and b is 18 hours, and c is 24 hours.
Fig. 4 is that embodiment 3 schemes at the SEM of different reaction times products therefroms, and wherein a is 2 hours, and b is 12 hours, and c is 24 hours, and d is 48 hours.
Fig. 5 is that embodiment 4 schemes at the SEM of different mol ratio products therefrom, wherein, (a) is CTAB and Bi (NO
3)
3.5H
2O mol ratio 2: 1 (b) is CTAB and Bi (NO
3)
3.5H
2O mol ratio 0.5: 1 (c) is the high-amplification-factor SEM photo of product.
What Fig. 6 provided for embodiment 5 is under the differential responses temperature, the SEM photo of reaction 24h products therefrom.(a) being 90 ℃, (b) is 120 ℃, (c) is 150 ℃.(d) being 180 ℃, (e) is the XRD figure spectrum of above-mentioned nanometer ball product.
Embodiment
The invention is further illustrated by the following examples.
Embodiment 1: the bobbles shape and the flower-shaped bismuthyl bromide superstructure of the assembling of preparation sheet intersection
(1) adding 9ml ethylene glycol in the beaker of 50ml is solvent, and other adds 0.5 * 10
-3Bi (the NO of mol
3)
3.5H
2O, 0.5 * 10
-3The CTAB of mol and the PEG4000 of 0.2g after stirring, move into presoma in the reactor of 12ml closed reactor with suction pipe;
(2) reactor is transferred in the temperature control furnace, control reaction temperature is 120 ℃ again, and distinguishes thermostatically heating 3,6,18,24h under this temperature.
(3) after reaction is finished, take out reactor, naturally cool to room temperature.
(4) take out reaction gained precipitation, alternately wash respectively 3 times with deionized water and dehydrated alcohol, after each washing was finished, centrifugation promptly got desired product.
Fig. 1 is given in the X-ray powder diffraction collection of illustrative plates (a-d be respectively 3,6,18,24h) of products obtained therefrom under the different reaction times respectively.As seen the crystal formation of products therefrom is identical, it is prolongation along with the reaction times, the diffraction peak of original broadening (is seen Fig. 1 a) become sharp-pointed (seeing Fig. 1 d), shown in arrow among Fig. 1 d, in the XRD figure of 24h products therefrom spectrum, can see some 3,6, in the XRD figure spectrum of 18h products therefrom can't see or distant diffraction peak, the degree of crystallinity that above result all shows product is along with the prolongation in reaction times improves gradually.What Fig. 2 provided is that temperature of reaction is 120 ℃, and the reaction times is respectively 3,6,18, the SEM photo of 24h (a-d) products therefrom, and the 3h products therefrom is that nanometer sheet is intersected the loose superstructure of assembling as seen from the figure, and its mean diameter is 0.9 μ m.Reaction times extends to 6h, the nanometer sheet further growth, and increasing nanometer sheet intersects and has obtained a kind of bobbles shape structure of the densification by the nanometer sheet assembling.Product yardstick homogeneous, mean diameter are about 2.3 μ m.Reaction times is when being 18h, along with the nanometer sheet thickening of further growing up, so how long, original fine and close structure can't be held the nanometer sheet of big thickening, thereby some nanometer sheet have broken away from main body, has obtained the inhomogenous superstructure of yardstick and some the independent nanometer sheet that there are a lot of gullies on the surface.The product of reaction 24h gained is the flower-shaped superstructure that is formed by the micron film intersection, and mean diameter is 2.8 μ m.
Embodiment 2: prepare rose-shaped bismuthyl bromide superstructure
(1) adding 9ml ethylene glycol in the beaker of 50ml is solvent, and other adds 0.5 * 10
-3Bi (the NO of mol
3)
3.5H
2O, 0.5 * 10
-3The CTAB of mol and the PVP4000 of 0.2g after stirring, move into presoma in the reactor of 12ml closed reactor with suction pipe;
(2) reactor is transferred in the temperature control furnace, control reaction temperature is 120 ℃ again, and distinguishes thermostatically heating 6,18,24h under this temperature.
(3) after reaction is finished, take out reactor, naturally cool to room temperature.
(4) take out reaction gained precipitation, alternately wash respectively 3 times with deionized water and dehydrated alcohol, after each washing was finished, centrifugation promptly got desired product.
What Fig. 3 provided is that temperature of reaction is 120 ℃, the SEM photo of the product that controlling reaction time is 6,18 respectively, 24h (a-c) generates, as seen from the figure, with respect to adding the PEG4000 products therefrom, adding the PVP4000 reaction times is that 6h obtains the micron spherical structure that product still is the nanometer sheet assembling, is that assembling mode is fine and close more, equally along with the reaction times prolongs, the nanometer sheet thickening of further growing up, some has broken away from integral body, thereby obtains loose relatively nanometer sheet packaging assembly.Wherein the product of 24h is the Rose structure of homogeneous, and mean diameter is 1.3 μ m.
Embodiment 3: preparation Pistacia vera shape and multi-layer steamed bread shape bismuthyl bromide superstructure
(1) adding 9ml ethylene glycol in the beaker of 50ml is solvent, and other adds 0.5 * 10
-3Bi (the NO of mol
3)
3.5H
2O, 0.5 * 10
-3The NaBr of mol and the PVP4000 of 0.2g after stirring, move into presoma in the reactor of 12ml closed reactor with suction pipe;
(2) reactor is transferred in the temperature control furnace, control reaction temperature is 120 ℃ again, and distinguishes thermostatically heating 2,12,24,48h under this temperature.
(3) after reaction is finished, take out reactor, naturally cool to room temperature.
(4) take out reaction gained precipitation, alternately wash respectively 3 times with deionized water and dehydrated alcohol, after each washing was finished, centrifugation promptly got desired product.
The SEM photo of product (Fig. 3 a-d) shows: the reaction times is 2h, and products therefrom is the Pistacia vera shape superstructure by the tight stratification of micron film of a large amount of homogeneous, and mean diameter is about 2 μ m.Prolong the reaction times to 12h, closely stacked micron film separated independently of one another, had some micron films to break away from integral body, thereby formed a kind of loosely by the stacked spherical superstructure that obtains of micron film, and the yardstick interval is 1-1.9 μ m.Reaction times extends to 24h, and increasing outer micron film breaks away from whole, has obtained the product of multi-layer steamed bread shape structure, and the yardstick interval is 1-1.8 μ m.When the reaction times extended to 48h, nearly all micron film had broken away from integral body, thereby product is independent dispersive micron film not of uniform size, and its yardstick interval is 0.4-1.1 μ m.
Embodiment 4:
(1) adding 9ml ethylene glycol in the beaker of 50ml is solvent, and other adds 0.5 * 10
-3The CTAB of mol and the PEG4000 of 0.2g and a certain amount of Bi (NO
3)
3.5H
2O (mol ratio CTAB: Bi (NO
3)
3.5H
2O was respectively 2: 1,1: 1 and 0.5: 1, after stirring, presoma was moved in the reactor of 12ml closed reactor with suction pipe;
(2) reactor is transferred in the temperature control furnace, control reaction temperature is 120 ℃ again, and under this temperature thermostatically heating 24h.
(3) after reaction is finished, take out reactor, naturally cool to room temperature.
(4) take out reaction gained precipitation, alternately wash respectively 3 times with deionized water and dehydrated alcohol, after each washing was finished, centrifugation promptly got desired product.
Fig. 5 a is 120 ℃ of reactions 24h, CTAB and Bi (NO
3)
3.5H
2The SEM photo of 2: 1 o'clock products therefroms of O mol ratio, visible product is the spherical superstructure by the nanometer sheet assembling, is big or small heterogeneity, between 1 to 5.5 μ m.CTAB and Bi (NO
3)
3.5H
21: 1 o'clock products therefrom of O mol ratio is to have the nanometer sheet of yardstick homogeneous to intersect the flower-like structure that forms, the existing description in Fig. 1 of embodiment 1 d.As CTAB and Bi (NO
3)
3.5H
20.5: 1 o'clock products therefrom of O mol ratio still intersects the flower-like structure that forms for nanometer sheet, the same heterogeneity of yardstick (seeing Fig. 5 b).Fig. 5 c is the high-amplification-factor SEM photo of product, and as we can see from the figure, the nanometer sheet difference in thickness that is assembled into flower-like structure is bigger, is about 50-250nm.
Embodiment 5: prepare twin bismuthyl bromide superstructure
(1) adding 9ml ethylene glycol in the beaker of 50ml is solvent, and other adds 0.5 * 10
-3Bi (the NO of mol
3)
3.5H
2O, 0.5 * 10
-3The NaBr of mol and the PVP4000 of 0.2g after stirring, move into presoma in the reactor of 12ml closed reactor with suction pipe;
(2) reactor is transferred in the temperature control furnace, control reaction temperature is 90,120,150,180 ℃ respectively again, and under this temperature thermostatically heating 24h.
(3) after reaction is finished, take out reactor, naturally cool to room temperature.
(4) take out reaction gained precipitation, alternately wash respectively 3 times with deionized water and dehydrated alcohol, after each washing was finished, centrifugation promptly got desired product.
What Fig. 6 provided is under the differential responses temperature, the SEM photo of reaction 24h products therefrom.Shown in Fig. 6 a, products therefrom is that the twin superstructure of some yardstick homogeneous and some sizes are less but nanometer sheet that shape differs in the time of 90 ℃, the mean sizes of these twin superstructures is about 6.2 μ m, they should be made up of those little nanometer sheet, and Fig. 6 b is the high-amplification-factor SEM photo of those little nanometer sheet.120 ℃ of products therefroms are multi-layer steamed bread shape superstructure, and existing narration no longer repeats herein in embodiment 3 (seeing Fig. 4 c).When temperature was increased to 150 ℃, products therefrom was discoid nanometer sheet (seeing Fig. 6 c), and the mean diameter of these nanometer sheet is 0.78 μ m.And temperature further is elevated to 180 ℃ of products therefroms is grey black (color of product was oyster white in the past), its SEM photo is shown in Fig. 6 d, product is made up of micron film and some nanometer balls, and the mean sizes of these micron films is 1 μ m, and products therefrom is compared yardstick and grown up to some extent during with 150 ℃.And XRD figure spectrum (see Fig. 6 e) analyze of those nanometer balls by product turns out to be bismuth with elementary.Shown in Fig. 6 e, the main body peak of product X RD is the characteristic peak of bismuth with elementary, and the peak of arrow indication then is the characteristic peak of bismuthyl bromide among the figure.As seen under this system, the preparation feedback temperature of target product bismuthyl bromide should be lower than 180 ℃.
Claims (3)
1. the method for a tensio-active agent preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling is characterized in that concrete steps are as follows:
(1) with Bismuth trinitrate, Sodium Bromide or cetyl trimethylammonium bromide are presoma, add polyoxyethylene glycol or polyvinylpyrrolidone as adjusting control agent, with ethylene glycol is solvent, stirred in the ultransonic while and to make the reactant homodisperse obtain precursor solution, precursor solution is moved in the hydrothermal reaction kettle with suction pipe; Wherein the mol ratio of Bismuth trinitrate and Sodium Bromide or cetyl trimethylammonium bromide is 1: 0.5-1: 2, and polyoxyethylene glycol or the polyvinylpyrrolidone concentration in reaction system is 0-0.022g/mL, the add-on of ethylene glycol is the 60-80% of container volume;
(2) place chamber type electric resistance furnace to be heated to 90-150 ℃ the hydrothermal reaction kettle that compound is housed in the step (1), and under this temperature, heat 2-48h, take out container, naturally cool to room temperature;
(3) washing, centrifugation promptly gets desired product.
2. the method for tensio-active agent preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling according to claim 1 is characterized in that described Bismuth trinitrate, Sodium Bromide, cetyl trimethylammonium bromide, polyoxyethylene glycol and polyvinylpyrrolidone purity are not less than chemical pure.
3. the method for tensio-active agent preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling according to claim 1 is characterized in that the employing of washing described in the step (3) deionized water, dehydrated alcohol alternately wash synthetic product, alternately wash 3-6 time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910196313A CN101691672A (en) | 2009-09-24 | 2009-09-24 | Method for preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling surfactant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910196313A CN101691672A (en) | 2009-09-24 | 2009-09-24 | Method for preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling surfactant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101691672A true CN101691672A (en) | 2010-04-07 |
Family
ID=42080380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910196313A Pending CN101691672A (en) | 2009-09-24 | 2009-09-24 | Method for preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling surfactant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101691672A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464175A (en) * | 2013-09-29 | 2013-12-25 | 南开大学 | Method for preparing visible light photocatalyst BiOCl nanometer sheet |
| CN103736506A (en) * | 2013-12-30 | 2014-04-23 | 安徽师范大学 | Photocatalyst and preparation method and use thereof |
| CN103752332A (en) * | 2014-01-22 | 2014-04-30 | 玉林师范学院 | Dried persimmon-shaped visible-light-driven photocatalyst BiOBr and preparation method thereof |
| CN107021458A (en) * | 2017-04-01 | 2017-08-08 | 河南师范大学 | A kind of preparation method of black BiOBr dusty materials |
| CN107934923A (en) * | 2017-11-07 | 2018-04-20 | 陕西科技大学 | A kind of nanometer sheet self assembly flower ball-shaped Sb2Se3The preparation method of anode material of lithium-ion battery |
| CN108355686A (en) * | 2018-01-26 | 2018-08-03 | 太原理工大学 | A kind of PtO/Pt4+- BiOCl photochemical catalysts and its preparation method and application |
| CN114944288A (en) * | 2022-06-20 | 2022-08-26 | 江西科技师范大学 | Flower-shaped bismuth trioxide, preparation method and application thereof, and prepared electrode |
| CN116984623A (en) * | 2023-09-26 | 2023-11-03 | 之江实验室 | Two-dimensional bismuth nanocrystal synthesis method based on sectional hydrothermal method |
-
2009
- 2009-09-24 CN CN200910196313A patent/CN101691672A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464175A (en) * | 2013-09-29 | 2013-12-25 | 南开大学 | Method for preparing visible light photocatalyst BiOCl nanometer sheet |
| CN103736506A (en) * | 2013-12-30 | 2014-04-23 | 安徽师范大学 | Photocatalyst and preparation method and use thereof |
| CN103736506B (en) * | 2013-12-30 | 2015-11-18 | 安徽师范大学 | A kind of photochemical catalyst, Preparation Method And The Use |
| CN103752332A (en) * | 2014-01-22 | 2014-04-30 | 玉林师范学院 | Dried persimmon-shaped visible-light-driven photocatalyst BiOBr and preparation method thereof |
| CN107021458A (en) * | 2017-04-01 | 2017-08-08 | 河南师范大学 | A kind of preparation method of black BiOBr dusty materials |
| CN107021458B (en) * | 2017-04-01 | 2019-03-12 | 河南师范大学 | A kind of preparation method of black BiOBr dusty material |
| CN107934923A (en) * | 2017-11-07 | 2018-04-20 | 陕西科技大学 | A kind of nanometer sheet self assembly flower ball-shaped Sb2Se3The preparation method of anode material of lithium-ion battery |
| CN108355686A (en) * | 2018-01-26 | 2018-08-03 | 太原理工大学 | A kind of PtO/Pt4+- BiOCl photochemical catalysts and its preparation method and application |
| CN114944288A (en) * | 2022-06-20 | 2022-08-26 | 江西科技师范大学 | Flower-shaped bismuth trioxide, preparation method and application thereof, and prepared electrode |
| CN114944288B (en) * | 2022-06-20 | 2023-04-25 | 江西科技师范大学 | Flower-like bismuth trioxide, preparation method and application thereof, and prepared electrode |
| CN116984623A (en) * | 2023-09-26 | 2023-11-03 | 之江实验室 | Two-dimensional bismuth nanocrystal synthesis method based on sectional hydrothermal method |
| CN116984623B (en) * | 2023-09-26 | 2024-02-09 | 之江实验室 | Two-dimensional bismuth nanocrystal synthesis method based on sectional hydrothermal method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Song et al. | Powerful combination of g-C3N4 and LDHs for enhanced photocatalytic performance: a review of strategy, synthesis, and applications | |
| CN101691672A (en) | Method for preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling surfactant | |
| Du et al. | Hexagonal tin disulfide nanoplatelets: A new photocatalyst driven by solar light | |
| CN112875755B (en) | Preparation method of bismuth tungstate nano powder | |
| CN103332726B (en) | The hydrothermal synthesis method of tin dioxide nanometer material | |
| CN105502286B (en) | A kind of porous nano NiFe2O4Preparation method | |
| CN111420664B (en) | Preparation method of flaky cuprous oxide/cobaltous oxide nanocomposite and application of flaky cuprous oxide/cobaltous oxide nanocomposite in catalyzing ammonia borane hydrolysis hydrogen production | |
| CN105664950B (en) | A kind of porous nano ZnFe2O4Preparation method | |
| CN102773110A (en) | Method for preparing SnS2/SnO2 composite photocatalyst material of numismatics-shaped hollow structure | |
| CN101279757A (en) | Method for preparing lanthanum subcarbonate nana-/micro-crystal by double hydrolysis regulation | |
| CN109647540A (en) | A kind of novel porous titanium-organic framework materials and preparation method thereof producing hydrogen for visible light photocatalysis | |
| CN105129857A (en) | Flower-shaped tungsten oxide nanometer material and preparing method thereof | |
| CN105645459A (en) | Surface modified urchin-shaped ZnO/TiO2 composite material and preparation method thereof | |
| CN103121665A (en) | Three-dimensional flower-like salicylic acid radical intercalation layered hydroxide nano material and preparation method thereof | |
| CN101423260A (en) | Method for preparing cobalt molybdate nano rod grating material | |
| CN107362792B (en) | Preparation method of strontium titanate/tin niobate composite nano material | |
| CN102145916B (en) | Preparation method of Sn3O4 nano powder | |
| CN106925306B (en) | Two-dimensional ultrathin ZnO/BiOBr0.9I0.1Hybrid solar catalyst and preparation method thereof | |
| CN103833080B (en) | A kind of preparation method of molybdic acid cadmium porous ball | |
| CN109273289A (en) | Solvent method prepares Ni-based cobalt acid magnesium base composite material and its application | |
| CN108262051A (en) | A kind of method of mechanical ball mill heat treatment two-step method synthesis ceria-bismuthyl carbonate nano-complex | |
| CN104195642B (en) | One prepares monocrystalline BiFeO3the method of nanometer sheet | |
| CN113559856B (en) | Preparation method of barium titanate/silver iodate heterojunction photocatalyst | |
| CN112850649B (en) | Preparation method of bismuth oxybromide nanosheet | |
| CN101654285B (en) | Method for preparing Co3O4 nano material by Co2O3 powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100407 |