Three-dimensionally cross-growing urchin-like monocrystalline selenium and preparation method thereof
A sea urchin-shaped, single crystal technology, applied in the direction of single crystal growth, crystal growth, single crystal growth, etc., can solve the problem that the application effect of single selenium cannot be effectively expanded, and the morphology control of single crystal selenium stays in zero-dimensional or one-dimensional Material and other issues, to achieve the effect of shortening the medium transmission path, facilitating infiltration, and high specific surface area
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Embodiment 1
[0032] A kind of sea urchin-shaped single crystal selenium of three-dimensional intersecting growth, and its preparation method comprises the following steps:
[0033] 1) Dissolve 2.2g of PVP and 2g of selenous acid in 50ml of deionized water respectively, then pour the obtained selenous acid aqueous solution into the PVP aqueous solution to obtain a mixed solution, stir at room temperature for 30min, take 4g of ascorbic acid powder, and slowly add it to the mixed solution , react at room temperature for 3 hours, and then wash the product three times with deionized water and absolute ethanol respectively to obtain the precursor selenium nanospheres;
[0034] 2) Mix ethanol and deionized water uniformly at a volume ratio of 1:1 to obtain a mixed solution of ethanol and water; uniformly disperse the obtained precursor selenium nanospheres in the mixed solution of ethanol and water obtained, and stand at room temperature for 6h, Then the product was washed three times with deioni...
Embodiment 2
[0038] A kind of sea urchin-shaped single crystal selenium of three-dimensional intersecting growth, and its preparation method comprises the following steps:
[0039] 1) Dissolve 2.5g of PVP and 2.2g of selenous acid in 50ml of deionized water respectively, then pour the obtained selenous acid aqueous solution into the PVP aqueous solution to obtain a mixed solution, stir at room temperature for 30min, take 3.5g of ascorbic acid powder, and slowly add it to the mixing In the solution, react at room temperature for 4 hours, and then wash the product three times with deionized water and absolute ethanol respectively to obtain the precursor selenium nanospheres;
[0040] 2) Mix ethanol and deionized water uniformly at a volume ratio of 1:0.5 to obtain a mixed solution of ethanol and water; uniformly disperse the obtained precursor selenium nanospheres in the mixed solution of ethanol and water obtained, and stand at room temperature for 10 h, Then the product was washed three ti...
Embodiment 3
[0043] A kind of sea urchin-shaped single crystal selenium of three-dimensional intersecting growth, and its preparation method comprises the following steps:
[0044] 1) Dissolve 3g PVP and 2g selenous acid in 60ml deionized water respectively, then pour the gained selenous acid aqueous solution into the PVP aqueous solution to obtain a mixed solution, stir at room temperature for 30min, get 3g ascorbic acid powder, slowly add in the mixed solution, React at room temperature for 5 hours, and then wash the product three times with deionized water and absolute ethanol respectively to obtain the precursor selenium nanospheres;
[0045] 2) Mix ethanol and deionized water uniformly at a volume ratio of 1:0.5 to obtain a mixed solution of ethanol and water; uniformly disperse the obtained precursor selenium nanospheres in the mixed solution of ethanol and water obtained, and stand at room temperature for 6h, Then the product was washed three times with deionized water and absolute ...
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