Magnetic field effect on gas-phase synthesis of metal-containing ultrafine particles from iron pentacarbonyl and carbon disulfide

Abstract

From a gaseous mixture of Fe(CO)₅ and CS₂, sedimentary aerosol particles involving organometal compounds were produced under UV light irradiation at 313 nm. Chemical composition of the sedimentary aerosol particles was controlled by a magnetic field and by post-exposure with UV light. By applying a magnetic field up to 5 T, photochemical reactivity of Fe(CO)₅ molecules was promoted and the amount of chemical species originating from Fe(CO)₅ increased with increasing magnetic field. By irradiating UV light upon the deposited particles, solid-state photochemical reactions took place in the particles, and CO groups bonded to Fe atom were effectively evolved from the sedimentary aerosol particles. These methods can be utilized to modify chemical composition of the metal-containing sedimentary particles.

Key Words:

• Ultrafine particles
• Gas phase photochemical reaction
• Magnetic field effect
• Iron pentacarbonyl
• Carbon disulfide