Template-free one-step synthesis regulation and control method of calcium carbonate/silicon dioxide nano tube

A template-free, nanotube technology, applied in the direction of silicon dioxide, calcium carbonate/strontium/barium, calcium/strontium/barium compounds, etc., can solve the problems affecting the large-scale synthesis of hollow nanotubes, affecting the quality of synthetic nanotubes, etc. Achieve the effect of good popularization and application value, low cost and simple process conditions

Active Publication Date: 2020-11-20
FUZHOU UNIV
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Problems solved by technology

These limitations largely hinder the large-scale synthesis of hollow

Method used

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  • Template-free one-step synthesis regulation and control method of calcium carbonate/silicon dioxide nano tube
  • Template-free one-step synthesis regulation and control method of calcium carbonate/silicon dioxide nano tube
  • Template-free one-step synthesis regulation and control method of calcium carbonate/silicon dioxide nano tube

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] CaCO 3 / SiO 2 One-step synthesis of nanotubes:

[0032] (1) Na 2 SiO 3 and Na 2 CO 3 Dissolve in deionized water to form mixed solution A, Na in mixed solution A 2 SiO 3 The concentration is 3mM, Na 2 CO 3 At a concentration of 10mM, the CaCl 2 Dissolved in deionized water to form solution B, CaCl in solution B 2 The concentration is 10mM.

[0033] (2) Put 5mL of solution A and 5mL of solution B in a water bath for 10 min, set the temperature to 30°C. During the heat preservation process, solution B was added dropwise to solution A through a peristaltic pump, the titration rate was set at 1 mL / min, and the titration was completed and left to stand for 30 min.

[0034] (3) The white precipitate was obtained by centrifugation, which was washed twice with deionized water, then washed twice with dilute hydrochloric acid, and finally washed twice with deionized water. The samples were dried in a freeze dryer for 12 h.

[0035] figure 1 It is the XRD pattern of...

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Abstract

The invention belongs to the technical field of nano material preparation, and discloses a template-free one-step synthesis regulation and control method of a CaCO3/SiO2 nano tube. The spontaneous growth of the CaCO3/SiO2 nano tube is realized by regulating and controlling the concentration of Na2SiO3. The CaCO3/SiO2 nano tube is synthesized in one step by using cheap, green, non-toxic and easilyavailable raw materials and adopting a coprecipitation method. The prepared composite material can be applied to efficient loading of metal ions. The preparation process is economical, simple, convenient and efficient, and no surfactant or template is needed.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, in particular to a CaCO 3 / SiO 2 Template-free one-step synthesis of nanotubes. Background technique [0002] Due to their unique properties, nanomaterials have attracted extensive attention in the fields of adsorption, energy storage, and catalysis. Among these nanomaterials, inorganic nanoparticles with a hollow structure have become a hot topic in the field of nanomaterials research because of their unique structural characteristics. Among these different types of inorganic nanomaterials, nano-SiO 2 Materials are widely used in catalysis, sensing, drug delivery, and template synthesis due to their unique morphology, high surface area, adjustable pore structure, easily modified surface properties, and high biocompatibility. In the past two decades, SiO with various structures 2 Materials have been rapidly developed, including ordered mesoporous frameworks, nanopores, nanor...

Claims

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Application Information

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IPC IPC(8): C01F11/18C01B33/18B82Y40/00B82Y30/00
CPCC01F11/181C01B33/18B82Y40/00B82Y30/00C01P2004/13C01P2004/80
Inventor 于岩曹若丹庄赞勇
Owner FUZHOU UNIV
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