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Generation and Stability of Bulk Nanobubbles
1School of Mechanical Engineering, Chung-Ang University , Seoul 156-756, Korea.
Langmuir : the ACS Journal of Surfaces and Colloids
|April 4, 2017
Summary
Researchers developed a new method to create stable carbon dioxide nanobubbles (BNBs). These bulk nanobubbles demonstrate significant stability in water, opening doors for diverse applications.
Area of Science:
- Physical Chemistry
- Materials Science
- Nanotechnology
Background:
- Nanobubbles exhibit unique properties and potential applications.
- Understanding the generation and stability of nanobubbles is crucial for their utilization.
Purpose of the Study:
- To introduce a novel method for generating bulk nanobubbles (BNBs).
- To investigate the stability and characteristics of the fabricated BNBs.
Main Methods:
- BNBs were generated using a CO2 gas mixing method.
- Infrared spectroscopy (ATR-FTIR) was employed to determine chemical identity and phase state.
- Nanoparticle tracking analysis (NTA) was used to observe BNB presence and quantify concentration and ζ-potential.
Main Results:
- The ATR-FTIR spectra confirmed that the BNBs were composed of CO2 gas.
- Nanoparticle tracking analysis detected BNBs at a concentration of approximately 2.94 × 10^8 particles/mL.
- The ζ-potential was measured at -20 mV, indicating colloidal stability.
- BNBs demonstrated stability in water for at least 24 hours after generation with a 120-minute mixing time.
Conclusions:
- A novel and effective method for generating stable bulk nanobubbles (BNBs) from CO2 gas was successfully developed.
- The fabricated BNBs exhibit significant stability in aqueous solutions over extended periods.
- The findings support the potential of these BNBs for various scientific and industrial applications.
