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Calcium Carbonate Formation in the Presence of Biopolymeric Additives
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Bubble-Liquid Membrane Method for Preparing Spherical Calcium Carbonate Nanoparticles.

Jun-Xian Ma1, Xue-Feng Lei1, Sha Jiang1

  • 1School of Material Science & Food Engineering, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China.

Journal of Nanoscience and Nanotechnology
|April 20, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed a bubble-liquid membrane reactor to create uniform, spherical calcium carbonate nanoparticles. Optimized conditions yielded well-dispersed, non-agglomerated nanoparticles, suggesting suitability for industrial production.

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Nanotechnology

Background:

  • Calcium carbonate nanoparticles possess diverse applications but their synthesis often results in agglomeration.
  • Controlling particle size, morphology, and dispersion is crucial for effective nanoparticle utilization.

Purpose of the Study:

  • To describe the principle and operation of a novel bubble-liquid membrane reactor.
  • To utilize this reactor for the synthesis of spherical calcium carbonate nanoparticles.
  • To investigate factors influencing nanoparticle characteristics and optimize the synthesis process.

Main Methods:

  • Utilized a bubble-liquid membrane reactor for nanoparticle synthesis.
  • Employed X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and laser particle size analysis for characterization.
  • Investigated the effects of additives, coating agents, and stirring speed on product morphology and dispersion.

Main Results:

  • Achieved spherical calcium carbonate nanoparticles with uniform dispersion and no agglomeration.
  • Identified optimal synthesis parameters: disodium hydrogen phosphate/ethylenediaminetetraacetic acid disodium salt mixture (1:1 mass ratio) as additive, 1.5 wt% oleic acid as coating agent, and stirring speed of 5000-6000 r/min.
  • Demonstrated control over crystal morphology and particle characteristics.

Conclusions:

  • The bubble-liquid membrane reactor is effective for producing high-quality calcium carbonate nanoparticles.
  • Optimized conditions ensure uniform dispersion and prevent agglomeration.
  • The developed method shows potential for continuous industrial-scale production of calcium carbonate nanoparticles.