Microwave-Assisted Synthesis of Water-Dispersible Humate-Coated Magnetite Nanoparticles: Relation of Coating Process Parameters to the Properties of Nanoparticles
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Synthesis of Samples
2.2.1. General Procedure
2.2.2. Synthesis of Uncoated Magnetite Nanoparticles
2.2.3. Synthesis of Humate-Coated Magnetite Nanoparticles
2.3. Samples Characterization
3. Results and Discussions
3.1. Structural Analysis
3.2. Fourier Transform Infrared Spectroscopy
3.3. Thermal Analysis
3.4. Magnetic Measurements
3.5. Colloid Properties
3.6. Summary
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Sample | Synthesis Method | Use of Potassium Humate | Volume Weighted Crystallite Size, WPPM (nm) | Lattice Parameter (nm) | Average Particle Size, TEM (nm) |
---|---|---|---|---|---|
HS-0 | thermal | not used | 8.3 | 0.8426 | 9.3 ± 3.3 |
MW-HS-0 | microwave | not used | 8.6 | 0.8429 | 8.7 ± 1.7 |
MW-HS-1 | microwave | after precipitation | 8.7 | 0.8429 | 8.2 ± 2.3 |
MW-HS-2 | microwave | before precipitation | 8.8 | 0.8431 | 8.4 ± 1.6 |
MW-HS-3 | microwave | before salts dissolution | 7.9 | 0.8455 | 9.4 ± 1.5 |
Sample | Saturation Magnetization (emu g−1) | Point of Zero Charge (pH) | Average Hydrodynamic Diameter (nm) |
---|---|---|---|
HS-0 | 58 | 8.33 ± 0.04 | 35.7 ± 12.0 |
MW-HS-0 | 60 | 8.41 ± 0.17 | 52.3 ± 17.2 |
MW-HS-1 | 80 | 6.44 ± 0.11 | 130.7 ± 36.7 |
MW-HS-2 | 68 | 7.18 ± 0.36 | 41.5 ± 13.5 |
MW-HS-3 | 60 | 9.44 ± 0.44 | 34.9 ± 11.5 |
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Kostyukhin, E.M.; Nissenbaum, V.D.; Abkhalimov, E.V.; Kustov, A.L.; Ershov, B.G.; Kustov, L.M. Microwave-Assisted Synthesis of Water-Dispersible Humate-Coated Magnetite Nanoparticles: Relation of Coating Process Parameters to the Properties of Nanoparticles. Nanomaterials 2020, 10, 1558. https://doi.org/10.3390/nano10081558
Kostyukhin EM, Nissenbaum VD, Abkhalimov EV, Kustov AL, Ershov BG, Kustov LM. Microwave-Assisted Synthesis of Water-Dispersible Humate-Coated Magnetite Nanoparticles: Relation of Coating Process Parameters to the Properties of Nanoparticles. Nanomaterials. 2020; 10(8):1558. https://doi.org/10.3390/nano10081558
Chicago/Turabian StyleKostyukhin, Egor M., Vera D. Nissenbaum, Evgeny V. Abkhalimov, Alexander L. Kustov, Boris G. Ershov, and Leonid M. Kustov. 2020. "Microwave-Assisted Synthesis of Water-Dispersible Humate-Coated Magnetite Nanoparticles: Relation of Coating Process Parameters to the Properties of Nanoparticles" Nanomaterials 10, no. 8: 1558. https://doi.org/10.3390/nano10081558