An influence of a gas velocity on morphology of molybdenum oxide nanoparticles generated by a glowing wire generator

Boskovic, Lucija; Agranovski, Igor E.

doi:10.1016/j.jaerosci.2013.03.014

Cited by 5 publications

(2 citation statements)

References 22 publications

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“…Molybdenum oxide nanoparticles were produced using a glowing wire generator (GWG, Model 3709, AeroNanoTech, Moscow, Russia) as described by Boskovic and Agranovski [20]. The experimental setup is shown in Figure 1, which consists of a set of molybdenum double wires (99.5%, 1 mm diameter) attached to two electrodes (distance between wires was approximately 3 mm, and the distance between electrodes was about 22 mm).…”

Section: Methodsmentioning

confidence: 99%

Nanoparticle Generation in Glowing Wire Generator: Insight into Nucleation Peculiarities

et al. 2021

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The paper studies nanoparticle formation in a glowing wire generator (GWG), in which the gas carrier flows around heated metal wire, producing aerosols from a vapor released from the surface. The device has been customized, enabling the use of a double-wire in different orientations in regard to the gas flow. Such alterations provided different effective distances between wires enabling investigation of their mutual influence. Concentration of particles produced in the GWG at different parameters (applied voltage and a gas flow) was carefully measured and analysed. Different regimes of a nanoparticle nucleation were identified that resulted from the applied voltage variation and the gas flow direction. In particular, independent nucleation of nanoparticles on both parts of the wire occurred in the wire plane’s configuration perpendicular to the gas flow, whilst dependent nucleation of nanoparticles was observed at a certain specific set of parameters in the configuration, in which the wire plane was parallel to the gas flow. Two corresponding functions were introduced in order to quantify those nucleation regimes and they tend to zero when either independent or dependent nucleation occur. The peculiarities found ought to be considered when designing the multi-wire GWGs in order to further extend the device’s range for industrial applications.

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Section: Methodsmentioning

confidence: 99%

Nanoparticle Generation in Glowing Wire Generator: Insight into Nucleation Peculiarities

et al. 2021

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“…Metals have also found in the e-cigarette fumes. The process of particle generation is similar to one in glowing wire generator systems (Khan et al 2014;Boskovic and Agranovski 2013;Peineke et al 2006). Heating coils used in e-cigarette atomizers can produce metallic nanoparticles due to evaporation when electrical power is applied.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of metallic nanoparticles emitted from heated Kanthal e-cigarette coils

et al. 2019

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Electronic (e-) cigarette use is becoming more common among youth and young adults. Ecigarette users may inhale metallic particles from the heating coil along with the nicotine vapor. This study aims to develop and validate an e-cigarette generation system for future inhalation toxicology studies of ecigarettes by characterizing the size and number of metallic nanoparticles produced and their chemical compositions. An e-cigarette generation system was constructed and Kanthal A1 coils were tested without a nicotine solution and wick under operating conditions of varying coil resistance (0.1-1.0 Ω), applied power (10-70 W), and duty cycle (5-50%). The size distribution and morphology of particles were characterized using a scanning mobility particle sizer and a transmission electron microscopy, respectively. The size of generated particles, as well as the number of particles generated, exhibited an increasing trend as the resistance of the coil increased. An initial large increase in size and number of particles generated was observed with increasing applied power, stabilizing with further increases in power. Increases in duty cycle resulted in increased particle generation. A similar pattern of particle generation was observed from the metal heating coils under various operating conditions. Under each operating condition, the number of generated particles exhibited a steep decrease during the first 15 min of each test run. Our results show this e-cigarette generation system is useful for future research investigating the health impact of metallic particle inhalation on e-cigarette users.

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On anomalous nanoparticle size evolution in glowing wire generator

Fomenko

Altman

Agranovski

2021

Nano-Structures & Nano-Objects

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An influence of a gas velocity on morphology of molybdenum oxide nanoparticles generated by a glowing wire generator

Cited by 5 publications

References 22 publications

Nanoparticle Generation in Glowing Wire Generator: Insight into Nucleation Peculiarities

Nanoparticle Generation in Glowing Wire Generator: Insight into Nucleation Peculiarities

Characteristics of metallic nanoparticles emitted from heated Kanthal e-cigarette coils

On anomalous nanoparticle size evolution in glowing wire generator

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