Nanoparticles exhibit superior bodily and chemical properties, making them extremely fascinating for numerous purposes. Flame spray pyrolysis (FSP) is a flexible approach for synthesizing dimension and composition-controlled metallic oxide/sulfide nanoparticles via a gas-phase response. To know the basic mechanisms governing nanoparticle formation in FSP, simplified single-droplet experiments have confirmed to unravel the physicochemical mechanisms of liquid metallic precursor combustions. This work introduces a novel methodology utilizing flame emission spectroscopy and high-speed imaging to investigate combustion species and metallic launch throughout metalorganic single droplet combustions, with the instance of the 2-ethylhexanoci acid (EHA)–tetrahydrothiophene (THT)–mesitylcopper (MiCu) precursor system. The strategy permits the tracing of precursor parts launched from droplet into the flame by spatial and temporal resolved emission monitoring from combustion species (OH*, CH*, C2*, CS*, CS2*) and atomic spectral traces (Cu I). The monitoring of metallic emission permits the direct commentary of the particle formation route, providing novel insights into the metalorganic precursor combustions. The findings of this work present a direct correlation between micro-explosions and nanoparticle formation via the gas-to-particle route. The discharge of copper emissions is noticed with the micro-explosion occasion, marking the micro-explosions because the important mechanism for the metallic launch and subsequent nanoparticle formation throughout the combustion course of. The outcomes point out a metalorganic viscous shell formation (THT + MiCu) resulting in the micro explosion. The EHA/THT ratio considerably impacts the combustion habits. Decrease ratios result in a gradual copper launch earlier than the micro explosion; larger ratios shorten the copper launch and delay the micro explosion – the very best ratio leads to two distinct burning phases.
