termined by the presence of CO3 and PO4 in Р 2-Р solution. The particle size of the FHC(1:1) became smaller after CO3 was added. Р SEM results of the obtained powder sample showed nano-grained structure arranged Р loosely with large number of voids, which improved greatly the reduction and Р absorption performance of FHC(1:1). Besides, the above structural change for Р FHC(1:1) was also found when small amount of were added. However, the opposite Р 3-Р change of structure was found when large amount of PO4 was added. Vivianite was Р obtained through above transformation identified by XRD and more orderly as well as Р compactly products found by SEM and the SSA of such products decreased sharply. Р Consequently, Fe(II) in such sample was more stable, unfavorable to its reduction Р V Р Р万方数据
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