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Updated: May 14, 2026
09:31
Calcium Carbonate Formation in the Presence of Biopolymeric Additives
Published on: May 14, 2019
Synthesis of Nanoscale Precipitated Calcium Carbonate: Additive-Free Precipitation and Chain-like Structure Evolution
Aili Zhou1, Xiaolan Song1, Xiaoqin Li2
1School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China.
Materials (Basel, Switzerland)
|May 13, 2026
Summary
We developed a simple, additive-free method to create tunable nanoscale precipitated calcium carbonate (NPCC) particles. This approach offers precise control over NPCC characteristics for advanced material applications.
Area of Science:
- Materials Science
- Nanotechnology
- Chemistry
Background:
- Nanoscale precipitated calcium carbonate (NPCC) is crucial for various applications, but its synthesis is often complex.
- Conventional methods require additives and multi-step processes, limiting scalability and control.
Purpose of the Study:
- To develop a simple, additive-free method for tunable NPCC synthesis.
- To investigate the influence of synthesis parameters on NPCC characteristics.
- To understand the non-classical crystallization mechanism of NPCC.
Main Methods:
- Direct reaction of aqueous Na2CO3 with Ca(OH)2 suspension under ambient conditions.
- Systematic variation of reactant concentration, temperature, injection rate, stirring speed, and aging duration.
- Characterization using time-resolved pH and conductivity monitoring, electron microscopy, and diffraction techniques.
Main Results:
- Achieved tunable synthesis of cubic NPCC with a mean particle size of ~90 nm.
- Demonstrated distinct crystalline features and good dispersion under optimal conditions.
- Observed a crystallization pathway deviating from classical models, suggesting non-classical crystallization.
Conclusions:
- Presented a practical, environmentally benign route for high-quality NPCC production.
- Provided fundamental insights into calcium carbonate crystallization mechanisms.
- Opened avenues for rational design of inorganic nanomaterials.
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