SOLVENT EFFECT ON ZERO-VALENT IRON NANOPARTICLES (nZVI) PREPARATION AND ITS THERMAL OXIDATION CHARACTERISTIC

Zero-valent iron (ZVI) nanoparticle exists a nanoscale (1-100 nm) of the particle with zero oxidation number. It has acquired considerable attention for its potential to capture free-electron moieties. The production and storage ZVI material, however, is challenging because it relatively unstable. In this research, we aim study solvent effects on preparation characterization. nano-scaled was synthesized by chemical reduction method. Iron (III) chloride hexahydrate (FeCl3·6H2O) as precursor sodium borohydride solution (NaBH4) reducing agent. Two parameters used in were: i) types (ethanol, diethyl ether, acetone) ii) proportion deionized water (4:0, 4:1, 4:2 volume). We characterized physical properties samples (e.g. size distribution, morphology, composition) using various techniques, example, TEM, UV-Vis spectrophotometer, XRD. Moreover, performed thermal reaction powder DSC TGA tools. results show that nZVI formed spherical shape smallest 39 nm. type key parameter protecting during synthesis process. According samples, an estimated specific surface area also reported. cubic structure particles at 79-81 wt.%, almost 20 wt.% attributed oxide (Fe2O3) phase. occurred above 400oC. minimum enthalpy approximately 1600 J/g. Furthermore, relation between sizes were revealed predicted Boltzmann equation.