Effect of Gd3+-,Pr3+-or Sm3+-substituted cobalt-zinc ferrite on photodegradation of methyl orange and cytotoxicity tests  

作　　者：Seyed Mahdi Peymani-Motlagh Nadia Moeinian Mojtaba Rostami Mahdi Fasihi-Ramandi Ali Sobhani-Nasab Mehdi Rahimi-Nasrabadi Mohammad Eghbali-Arani Mohammad Reza Ganjali Teofil Jesionowski Hermann Ehrlich Mohammad Ali Karimi Narges Ajami 

机构地区：[1]Department of Chemistry,Imam Hossein University,Tehran 16765-3454,Iran [2]Department of Chemistry,Payame Noor University,Tehran 19395-4697,Iran [3]Young Researchers and Elite Club,Karaj Branch,Islamic Azad University,Karaj 1698739196,Iran [4]Molecular Biology Research Center,Systems Biology and Poisoning Institute,Baqiyatallah University of Medical Sciences,Tehran 1951683759,Iran [5]Social Determinants of Health(SDH)Research Center,Kashan University of Medical Sciences,Kashan 8719657891,Iran [6]Core Research Lab,Kashan University of Medical Sciences,Kashan 8719657891,Iran [7]Faculty of Pharmacy,Baqiyatallah University of Medical Sciences,Tehran 195163759,Iran [8]Department of Physics,University of Kashan,Kashan 8751651998,Iran [9]Center of Excellence in Electrochemistry,Faculty of Chemistry,University of Tehran,Tehran 1983969411,Iran [10]Institute of Chemical Technology and Engineering,Faculty of Chemical Technology,Poznan University of Technology,Poznan 60965,Poland [11]Institute of Electronic and Sensor Materials,TU Bergakademie Freiberg,Freiberg 09599,Germany

出　　处：《Journal of Rare Earths》2019年第12期1288-1295,共8页稀土学报（英文版）

摘　　要：Gd3+-,Pr3+-or Sm3+-doped Co-Zn(Co0.5Zn0.5Fe2 O4)magnetic ferrites(i.e.,Co0.5Zn0.5Gd0.1Fe1.9O4,Co0.5Zn0.5Pr0.1Fe1.9O4 and Co0.5Zn0.5Sm0.1Fe1.9O4)were prepared using a facile sol-gel approach,and the structure,surface morphology and chemical composition of the products were studied by means of scanning electron microscopy(SEM),energy dispersive X-ray analysis(EDX),X-ray diffraction(XRD),UVvisible diffuse reflectance spectroscopy(DRS),photoluminescence(PL)spectroscopy,Fourier transform infrared spectroscopy(FT-IR)and vibrating sample magnetometer(VSM)spectroscopy.XRD patterns show the Co-Zn product is composed of cubic spinel phases with few impurities or secondary phases,and the average crystallite sizes of the samples are determined to be approximately^51—80,~99—181,~68—103 and^83—133 nm.Also the coercivity and remnant and saturation magnetizations,evaluated by vibrating sample magnetometer(VSM),are found to increase linearly with the incorporation of Gd3+,Pr3+and Sm3+in the product formulation.The CO1-xZnxFe2-yRyO4 photocatalyst sample is found to display a red shift in its absorption,and exhibits outstanding photocatalytic effects in the degradation of MO under ultraviolet(UV)light.This is attributed to the reduction of the band gap of cobalt-zinc ferrite due to the presence of rare earth ions.Further in vitro evaluations of the cytotoxic effects of the synthesized nanoparticles were performed on a HeLa cell line.Gd3+-,Pr3+-or Sm3+-doped Co-Zn(Co0.5Zn0.5Fe2 O4) magnetic ferrites(i.e.,Co0.5Zn0.5Gd0.1Fe1.9O4,Co0.5Zn0.5Pr0.1Fe1.9O4 and Co0.5Zn0.5Sm0.1Fe1.9O4) were prepared using a facile sol-gel approach,and the structure,surface morphology and chemical composition of the products were studied by means of scanning electron microscopy（SEM）,energy dispersive X-ray analysis（EDX）,X-ray diffraction（XRD）,UVvisible diffuse reflectance spectroscopy（DRS）,photoluminescence（PL） spectroscopy,Fourier transform infrared spectroscopy（FT-IR） and vibrating sample magnetometer（VSM） spectroscopy.XRD patterns show the Co-Zn product is composed of cubic spinel phases with few impurities or secondary phases,and the average crystallite sizes of the samples are determined to be approximately～51—80,～99—181,～68—103 and～83—133 nm.Also the coercivity and remnant and saturation magnetizations,evaluated by vibrating sample magnetometer（VSM）,are found to increase linearly with the incorporation of Gd3+,Pr3+and Sm3+in the product formulation.The CO1-xZnxFe2-yRyO4 photocatalyst sample is found to display a red shift in its absorption,and exhibits outstanding photocatalytic effects in the degradation of MO under ultraviolet（UV） light.This is attributed to the reduction of the band gap of cobalt-zinc ferrite due to the presence of rare earth ions.Further in vitro evaluations of the cytotoxic effects of the synthesized nanoparticles were performed on a HeLa cell line.

关 键 词：Magnetic FERRITE Rare earth ions PHOTOCATALYST CYTOTOXICITY Sol-gel 

分 类 号：TG1[金属学及工艺—金属学]