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Preparation method of zinc gallate mesoporous nanospheres

A technology of zinc gallate and nanospheres, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of uneven size of nanomaterials, easy agglomeration, low drug loading rate, etc.

Active Publication Date: 2021-01-12
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, ZnGa 2 o 4 :Cr 3+ Nano drug loading system still faces the problem of low drug loading rate
On the other hand, ZnGa 2 o 4 :Cr 3+ The synthesis of nanomaterials requires high-temperature calcination to prepare outstanding afterglow performance, and the prepared ZnGa 2 o 4 :Cr 3+ The size of nanomaterials is uneven and easy to agglomerate in aqueous solution, these factors inevitably restrict the ZnGa 2 o 4 :Cr 3+ Application of nano-loaded drugs in vivo

Method used

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  • Preparation method of zinc gallate mesoporous nanospheres
  • Preparation method of zinc gallate mesoporous nanospheres

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example 1

[0021] a) Preparation of uniform nano-silicon spheres (MSN-1) with regular mesoporous pore structure (diameter about 130 nm, and mesopore diameter of 6.8 nm; b) Preparation of ion sources containing gallium nitrate, zinc nitrate and chromium nitrate The mixed solution and the stoichiometric ratio of Ga, Zn, Cr input amount is 1:2:0.0006; c) the mixed solution of MSN-1 and metal ion nitrate is mixed uniformly at a mass ratio of 50:1, d) at 800 o Calcined at high temperature for 3h to obtain ZnGa 2 o 4 :Cr 3+ -composite of MSN-1; e) NaOH solution (40% by mass) and ZnGa 2 o 4 :Cr 3+ The complex of -MSN-1 is in a mass ratio of 1:0.01 in a ratio of 40 o Stir at C for 12h, etch to remove MSN-1, and then obtain raspberry-shaped mesoporous ZnGa 2 o 4 :Cr 3+ , Si 4+ nanospheres. The product SEM picture is as follows figure 1 A, the synthesis process is as follows figure 2 .

example 2

[0023] a) Preparation of uniform nano-silicon spheres (MSN-1) with regular mesoporous pore structure (diameter about 130 nm, and mesopore diameter of 6.8 nm; b) Preparation of ion sources containing gallium nitrate, zinc nitrate and chromium nitrate The mixed solution and the stoichiometric ratio of Ga, Zn, Cr input amount is 1:2:0.0006; c) the mixed solution of MSN-1 and metal ion nitrate is mixed uniformly at a mass ratio of 50:1, d) at 800 o Calcined at high temperature for 3h to obtain ZnGa 2 o 4 :Cr 3+ -composite of MSN-1; e) NaOH solution (40% by mass) and ZnGa 2 o 4 :Cr 3+ The complex of -MSN-1 is in a mass ratio of 1:0.1 in a ratio of 40 o Stir at C for 12h, etch to remove MSN-1, and then obtain raspberry-shaped mesoporous ZnGa 2 o4 :Cr 3+ , Si 4+ nanospheres. The product SEM picture is as follows figure 1 b.

example 3

[0025] a) Preparation of uniform nano-silicon spheres (MSN-1) with regular mesoporous pore structure (diameter about 130 nm, and mesopore diameter of 6.8 nm; b) Preparation of ion sources containing gallium nitrate, zinc nitrate and chromium nitrate The mixed solution and the stoichiometric ratio of Ga, Zn, Cr input amount is 1:2:0.0006; c) the mixed solution of MSN-1 and metal ion nitrate is mixed uniformly at a mass ratio of 50:1, d) at 800 o Calcined at high temperature for 3h to obtain ZnGa 2 o 4 :Cr 3+ -composite of MSN-1; e) NaOH solution (40% by mass) and ZnGa 2 o 4 :Cr 3+ -The complex of MSN-1 is in a mass ratio of 1: 1 in a ratio of 40 o Stir at C for 12h, etch to remove MSN-1, and then obtain raspberry-shaped mesoporous ZnGa 2 o 4 :Cr 3+ , Si 4+ nanospheres. The product SEM picture is as follows figure 1 c.

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Abstract

The invention discloses a preparation method of zinc gallate mesoporous nanospheres, and belongs to the technical field of nano materials. The preparation method comprises the following specific steps: by taking mesoporous silicon spheres(MSNs)with regular pore diameter structures as a hard template, ultrasonically mixing the MSNs with a mixed solution consisting of gallium nitrate, zinc nitrate and chromium nitrate in a certain proportion uniformly, and performing high-temperature calcination to obtain a zinc gallate MSNs compound; and etching with a sodium hydroxide solution with a certain concentration to remove the MSNs to obtain the Cr < 3 + > and Si < 4 + > co-doped zinc gallate mesoporous nanospheres. The method is good in reproducibility and low in cost, and the prepared zinc gallate mesoporous nanospheres have the advantages of being excellent in near-infrared afterglow performance, large in specific surface area, unique in mesoporous morphology, adjustable in size and the like.

Description

technical field [0001] The invention relates to a raspberry-shaped ZnGa based on silicon template-assisted-alkali etching technology 2 o 4 :Cr 3+ ,Si 4+ A method for preparing mesoporous nanospheres belongs to the technical field of nanomaterials. Background technique [0002] The long afterglow phenomenon refers to a special optical phenomenon that can continue to emit light for several minutes, hours or even days after the high-energy excitation (such as X-rays, ultraviolet rays, etc.) stops. With the rapid development of biological imaging technology in recent years, long afterglow luminescent materials have attracted more and more researchers' attention, especially near-infrared long afterglow nanomaterials whose luminescence band is located in the transparent window of biological imaging. Chromium-doped zinc gallate (ZnGa 2 o 4 :Cr 3+ ) as the representative of the third-generation near-infrared long-lived luminescent nanomaterials, after entering the body, due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G15/00C09K11/68A61K47/69A61K49/00B82Y30/00B82Y40/00
CPCA61K49/0013A61K49/0089A61K47/6923B82Y30/00B82Y40/00C01G15/00C01P2004/32C01P2004/62C01P2006/12C01P2006/16C09K11/68
Inventor 吕弋冯洋宋红杰
Owner SICHUAN UNIV
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