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.
FAN Xianyuan
,
SUN Yi
,
RUAN Xia
,
LI Zhe
,
LIU Hong
. Study on the preparation of nanoscale Fe/Ni bimetal and its reduction of 2,4-dichlorophenol from aqueous solution[J]. Science & Technology Review, 2016
, 34(22)
: 43
-47
.
DOI: 10.3981/j.issn.1000-7857.2016.22.005
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