Physics and Astronomy Faculty Publications and Presentations
Document Type
Article
Publication Date
3-2018
Abstract
Bismuth oxide structures resembling flowers, bowties and brushwood-like assemblies were successfully produced utilizing microfluidic synthesis approach. The molecular length of surfactant polyethylene glycol (PEG) was critical in shaping the particle morphology, while the laminar flow in micro-channels assured the complete structures without breakage. The PEG with 200 Molecular Weight (MW) assists to produce 1–2 μm flower-like structures, while the PEG with 8000 MW yields to the highly crystalline bowtie and brushwood-like structures with up to 60 μm size. The particle morphology examination along microfluidic network coupled with fluid dynamics calculations showed that the complex structures are completed at the end of micro-channel tubes, at the residence time less than 13 s. The as-received bismuth oxide particles were tested for oxidizing activity in nano-energetic material Al-Bi2O3. The formulation containing flower-shaped structures was superior to brushwood-like oxidizer, and produced the maximum pressure discharge value of about 4.9 kPa m3 g−1, which is comparable to highest reported values in literature.
Recommended Citation
Yolchinyan, Srbuhi A., Mkhitar A. Hobosyan, and Karen S. Martirosyan. "Tailoring bismuth oxide flower-, bowtie-and brushwood-like structures through microfluidic synthesis." Materials Chemistry and Physics 207 (2018): 330-336. https://doi.org/10.1016/j.matchemphys.2017.12.073
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Publication Title
Materials Chemistry and Physics
DOI
10.1016/j.matchemphys.2017.12.073
Comments
Original published version available at https://doi.org/10.1016/j.matchemphys.2017.12.073