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Nanomaterials are widely used across many fields. Ultrasonic spray pyrolysis technology is an efficient, cost-effective, and versatile technique based on aerosol processes, suitable for synthesizing nanoparticles and depositing thin films. Ultrasonic spray pyrolysis technology enables the synthesis of metal oxides and composite nanomaterials with precise control over morphology and chemical composition, using metal salts in aqueous solvents.
One of the core aspects of ultrasonic spray pyrolysis technology is the use of high-frequency ultrasonic oscillations to generate fine droplets, a process commonly known as "atomization." With continuous liquid supply, stable atomization can be maintained, which highlights the simplicity, low cost, and continuous operability of this technique. As mentioned earlier, the precursor in ultrasonic spray pyrolysis technology is liquid, allowing the materials to be mixed in solution form, ensuring precise stoichiometric control and uniform distribution of components. This makes it especially suitable for preparing multi-component composite powders.
Figure 1. Siansonic's mass production ultrasonic spray pyrolysis system USP1000
Ultrasonic spray pyrolysis technology involves preparing a precursor solution by mixing metal salts in the stoichiometric ratios required for composite powders. The solution is then atomized and introduced into a high-temperature zone for pyrolytic decomposition. After a rapid solvent evaporation and solute precipitation, solid particles are formed. These particles then undergo a series of physical and chemical processes such as drying, thermal decomposition, and sintering to ultimately yield ultrafine powders that are collected. Powders produced using ultrasonic spray pyrolysis technology typically exhibit minimal agglomeration, eliminating the need for subsequent washing or grinding, which ensures high purity, high activity, and uniform particle size while avoiding the risk of secondary contamination.
The ultrasonic spray pyrolysis system from Siansonic Technology Limited, based in Beijing, integrates ultrasonic atomization, high-temperature pyrolysis, and ultrafine powder collection into one comprehensive unit, providing strong support for the preparation of ultrafine powders.
