摘要
A green and convenient pathway of preparing iron nanoparticles(FeNPs)with pomegranate leaf(PG)extract for highly effective removal of malachite green(MG)was proposed under ambient conditions.The materials were characterized by scanning electron microscope(SEM),X-ray energy-dispersive spectrometer(EDS),Fourier transform infrared spectroscopy(FTIR),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS)techniques.The results show that their surfaces are capped and stabilized by PG extract with amorphous nature and without any detection of zero-valent iron.The size and surface valence state of FeNPs are the key factors that affect the MG removal efficiency.As the reagent volume ratio of PG extract to FeCl_(3) increases greater than 1,the cross-linked FeNPs become more obvious,having a homogeneous distribution with the size range from 30 to 40 nm,and show an increasing ratio ofFe(Ⅱ)/Fe(Ⅲ),which is in proportion to the degradation efficiency of MG,reaching higher than 95%in only 2 min by using 50 mg Fe/L FeNPs and 200 mg/L MG.
作者
HU Yu
ZHOU Shiyu
PAN Xiaobin
ZHOU Fan
SUN Yong
LIU Meiqun
ZHANG Dong
ZHANG Lingfan
胡玉;ZHOU Shiyu;PAN Xiaobin;ZHOU Fan;SUN Yong;LIU Meiqun;ZHANG Dong;张玲帆(Department of Chemistry and Environmental Engineering,Hanjiang Normal University,Shiyan 442000,China;Shiyan Hydrological and Water Resources Survey Bureau of Hubei Province,Shiyan 442000,China;School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China)
基金
the National Natural Science Foundation of China(No.21407050)
the Excellent Young and Middle-aged Science and Technology Innovation Team Plan of Hubei Colleges(No.T201824)。
