SpraySyn burner

Spray-flame synthesis is a versatile one-step process for synthesizing highly pure and homogeneous single- or multicomponent functional nanoparticles. The wide variety of usable liquid or dissolved solid precursors makes this technique promising for the rapid and scalable synthesis of complex nanomaterials. The investigation of spray-flame synthesis of nanoparticles with a standard burner, through experimentation and simulation, enables the acquisition of a comprehensive dataset using established and novel measuring methods.

The standardized spray-flame burner for nanoparticle synthesis is called the SpraySyn burner. A two‑fluid nozzle disperses a flow of precursor solution via a high-velocity flow of O₂ that is stabilized and ignited by a surrounding axisymmetric premixed laminar CH₄/O₂ pilot flame. This pilot flame is surrounded by a coflow of N₂ to suppress the influence of the environmental conditions. The precursor burns in the flame and is converted into a metal oxide. By now, more than 16 SpraySyn burners are successfully installed in more than twelve laboratories around the world to investigate the fundamentals of spray-flame synthesis. In our facility, the resulting particles are collected in a filter and can be analyzed after the experiment. During the experiment, the flame may be analyzed using various (laser) optical methods. The reactor has optical accesses through several large quartz windows for this purpose. Further details on projects utilizing the SpraySyn can be found here

References

Schneider F., Suleiman S., Menser J., Borukhovich E., Wlokas I., Kempf A., Wiggers H., Schulz C.
Rev. Sci. Instrum. 90:085108 (2019)