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Hierarchically porous TiO2 material and preparation method thereof, and application of hierarchically porous TiO2 material in protein adsorption

A multi-level porous, biomass material technology, applied in selective adsorption, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of high price, harsh hydrothermal conditions, unfavorable large-scale production, etc. The effect of absorbance reduction

Active Publication Date: 2019-11-19
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The template method is the most commonly used method to prepare hierarchically porous TiO 2 materials, but the currently reported hierarchical porous TiO 2 Most of the material preparation methods require harsh hydrothermal conditions and expensive templating agents, which are not conducive to large-scale production

Method used

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  • Hierarchically porous TiO2 material and preparation method thereof, and application of hierarchically porous TiO2 material in protein adsorption
  • Hierarchically porous TiO2 material and preparation method thereof, and application of hierarchically porous TiO2 material in protein adsorption
  • Hierarchically porous TiO2 material and preparation method thereof, and application of hierarchically porous TiO2 material in protein adsorption

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Experimental program
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Embodiment 1

[0036] A Hierarchical Porous TiO 2 The preparation method of material comprises the following steps:

[0037] Weigh 1.00g triblock copolymer P123 (Pluronic P123) and dissolve it in 20mL ethanol solution, weigh 1.1638g BA tannin extract (Mazhan Acacia extract) and dissolve it in 30mL distilled water, mix the ethanol solution of Pluronic P123 and BA tannin extract The aqueous solution of glue was mixed, and after stirring for 20min under the air, 2.29g Ti(SO 4 )2 , continue to stir for 3h, then transfer the solution to a petri dish, age in a 40°C oven for 48h, then transfer to a 60°C oven for 24h to promote metal TiO 2 Self-assembly, the dried TiO 2 / Transfer the organic template composite crystal solid to a corundum crucible, and calcine it in a muffle furnace at 550°C for 240min to obtain hierarchical porous TiO 2 solid material.

[0038] The synthetic hierarchical hole TiO of embodiment 1 2 The TEM spectrum of figure 1 As shown, it can be clearly observed from the figur...

Embodiment 2

[0040] The hierarchical porous TiO provided by this embodiment 2 The method for the solid material is basically the same as in Example 1, the difference being that the calcination temperature in the muffle furnace is 650°C. The hierarchical porous TiO synthesized by embodiment 2 2 The XRD spectrum of the solid material is as figure 2 As can be seen from the figure, the XRD spectrum of the synthetic sample in Example 2 has a sharp and obvious diffraction peak at 2θ=25.3°, corresponding to the anatase TiO 2 (101) facets, proving that the as-synthesized hierarchically porous TiO 2 It has high crystallinity; there are weaker diffraction peaks at 2θ=38.1°, 48.1°, 53.9°, 55.1°, 62.5°, 68.7°, 70.3° and 75.1°, corresponding to anatase TiO 2 The (004), (200), (105), (211), (204), (116), (220) and (215) crystal planes.

Embodiment 3

[0042] The hierarchical porous TiO provided by this embodiment 2 The method of the solid material is the same as in Example 2, the difference being that the amount of BA extract is 1.9397g. The synthetic hierarchical hole TiO of embodiment 3 2 The pore size distribution of a solid material is shown in image 3 As shown in A, image 3 B is Hierarchical Porous TiO 2 Nitrogen adsorption-desorption isotherms for solid materials. As can be seen from the figure, the hierarchical porous TiO synthesized in Example 3 2 The isotherms of the isotherms belong to the typical type IV isotherms and have H3 type hysteresis loops, which are caused by the capillary condensation of nitrogen molecules in the mesopores, which proves that the synthesized hierarchical porous TiO 2 The mesoporous structure exists in the solid material sample, and at the same time at a lower relative pressure (p / p 0 2 Both microporous and mesoporous structures exist.

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Abstract

The invention specifically relates to a hierarchically porous TiO2 material and a preparation method thereof, and application of the hierarchically porous TiO2 material in protein adsorption, belonging to the field of hierarchically porous metal oxide materials. According to the invention, a triblock copolymer and a biomass material, i.e., a vegetable tanning agent, are used as double templates; non-toxic and low-valence soluble inorganic metal salt of titanium is used as a metal source; self-assembling is carried out mildly without high-temperature hydrothermal conditions so as to promote crystal form conversion; and finally, calcining is performed so as to form the hierarchically porous TiO2 material with a specific surface area of 32-142 m<2> / g and a pore size range of 1.8-94 nm. The invention provides a low-cost easily-operable synthetic route for preparation of the hierarchically porous TiO2 material; and the prepared hierarchically porous TiO2 material can effectively adsorb protein biomacromolecules in virtue of its large specific surface area and rich pore structures, and has good adsorption effect on protein substances in softening wastewater produced in tanning.

Description

technical field [0001] The invention belongs to the field of hierarchical porous metal oxide materials, in particular to a hierarchical porous TiO 2 Materials, preparation methods and their application in adsorbing proteins. Background technique [0002] With the development of biotechnology, proteomics is widely used in biomedicine, gene diagnosis and other fields, and the separation and purification of proteins are the prerequisites for fine protein research. Adsorption has become a common method for protein separation and purification due to its simple operation and low cost. Therefore, designing an adsorption material that can effectively adsorb proteins is of great significance for the separation and purification of proteins. [0003] In recent years, chemistry and materials science have flourished, and porous materials have been widely used in adsorption, catalysts, solar systems, and nanosensors due to their rich porosity and tunable pore structure. According to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/28B01J20/30B01D15/08C02F1/28
CPCB01D15/08B01J20/06B01J20/28054C02F1/281
Inventor 强涛涛宋云颖朱润桐
Owner SHAANXI UNIV OF SCI & TECH
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