Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 3, Issue 5, Pages 1457-1462Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am200016v
Keywords
multicomponent nanoparticles; dithionite; iron sulfides; zerovalent iron; TCE
Funding
- Korea Ministry of Environment
- The GAIA project
- The BK21 project
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Multicomponent nanoparticles containing two or more different types of functionalities show unique physical and chemical properties, leading to significantly enhanced performance. In this study, we have developed a new one-pot method to prepare Fe/FeS nanoparticles using dithionite at room temperature. The FeS precipitates on the Fe surface are formed by the interaction between dissolved iron species and hydrogen, sulfide, one of the decomposition products of dithionite in solution. The resulting Fe/FeS nanopartides have high surface area, good electrical conductivity, and strong magnetic responsivity. In addition, the Fe/FeS shows a much higher reactivity toward contaminants than the pure Fe nanoparticles. The above synthesized nanoparticles are successfully applied for the rapid removal of trichloroethylene (TCE) from water. The study reveals that Fe/FeS nanoparticles are a promising candidate for the efficient removal of pollutants.
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