Nanoscale Fe/Ni bimetal is prepared by the liquid phase reduction method. The effects of the FeCl₂ concentration, n(Ni)/n(Fe), and n(NaBH₄)/n(FeCl₂) on the reduction of 2, 4-dichlorophenol(2, 4-DCP) are investigated and the reduction pathway of 2, 4-DCP is confirmed. The results show that when the concentration of the FeCl₂ solution is 3 mol/L, n(Ni)/n(Fe)=4%, and n(NaBH₄)/n(FeCl₂)=1, the removal efficiency of 2, 4-DCP is nearly 100%, with 95% of 2, 4-DCP being reduced to phenol. The morphology of the nano Fe/Ni is spherical particles with diameter of about 50 nm. The Fe/Ni particles are linked into branches by their inherent magnetic force and are aggregated dispersedly owing tothe electrostatic stabilization. The BET surface area of the Fe/Ni particles reaches 44.8 m²/g. The pathway of 2, 4-DCP is mainly attributed to the fact that two C-Cl bands are broken in turns to form 2-chlorophenol or 4-chlorophenol, and then dechlorinated to phenol.

nano materials  /  Fe/Ni bimetal  /  2,4-dichlorophenol  /  reduction