LAUSR

Abstract Nanoscale zero-valent iron@mesoporous hydrated silica core-shell particles (NZVI@mHS CSP) with improved dispersibility, transportability and dechlorination strength were successfully synthesized and tested for the removal of chlorinated aliphatic hydrocarbons from groundwater. The structural, electronic and textural features of the NZVI@mHS CSP were characterized by different techniques. The NZVI@mHS CSP depicted a specific surface area of 71 m2·g−1, significantly higher, compare to NZVI (12 m2·g−1), with a mesoporous network due to the formation of a hydrated silica shell surrounding the NZVI particle. NZVI@mHS CSP showed an enhanced transportability in sand column compared with NZVI, related to the suspension stability, small aggregated particle size (