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Atomization of silver nanoparticles suspension as an alternative for generating nanosilver aerosol

Rosa Paula de Freitas (Federal University of São Carlos, Chemical Engineering Department, São Carlos, SP, Brazil)
Martins Jaqueline Costa (Federal University of São Carlos, Chemical Engineering Department, São Carlos, SP, Brazil)
Lima Bruno de Araújo (Federal University of São Carlos, Chemical Engineering Department, São Carlos, SP, Brazil)
Oishi Marcos Vinícius Camargo (Federal University of São Carlos, Chemical Engineering Department, São Carlos, SP, Brazil)
Aguiar Mônica Lopes (Federal University of São Carlos, Chemical Engineering Department, São Carlos, SP, Brazil)
Bernardo André (Federal University of São Carlos, Chemical Engineering Department, São Carlos, SP, Brazil)

Nanomaterials are highly attractive for use in many applications, primarily due to their greater contact surface area and enhanced effects compared to the corresponding bulk materials. However, nanomaterials present risks to human health, since they are able to penetrate deep into the respiratory tract. It is therefore important to know the particle sizes of these substances, although such measurements can present difficulties associated with the generation of this type of material. It is also important to investigate the mechanism of aerosol generation, considering the properties of the starting material. Here, evaluation was performed of the generation of an aerosol of silver nanoparticles from a suspension, using an environmentally friendly and simple synthesis method. A reduction reaction was used to produce the silver nanoparticles. The aerosol was generated using a modified nebulizer inhaler, and particles were counted using an SMPS system. The measurements showed that the predominant particle sizes were 45.63±2.49 nm (determined by SMPS) and 50.7±0.7 nm (determined by DLS analysis).

Keywords: silver nanoparticles, aerosol generation, micro-nebulizer