Albumin matrix assisted wet chemical synthesis of nanocrystalline MFe2O4 (M = Cu, Co and Zn) ferrites for visible light driven degradation of methylene blue by hydrogen peroxide
Albumin matrix assisted wet chemical synthesis of nanocrystalline MFe2O4 (M = Cu, Co and Zn) ferrites for visible light driven degradation of methylene blue by hydrogen peroxide
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DOI：
10.1039/c6ra04825k
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发表时间：
2016-06
期刊：
影响因子：
3.9
通讯作者：
M. Saha;S. Mukherjee;Sanjay Kumar;S. Dey;A. Gayen
中科院分区：
文献类型：
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作者：
M. Saha;S. Mukherjee;Sanjay Kumar;S. Dey;A. Gayen
尖晶石 MFe2O4（M = Cu、Co 和 Zn）铁氧体已通过白蛋白基质辅助的湿化学工艺成功合成，并用作亚甲基蓝 (MB) 降解的催化剂。这些材料通过不同的技术进行了表征，包括X射线衍射（XRD）、X射线光电子能谱（XPS）、高分辨率透射电子显微镜（HR-TEM）、场发射扫描电子显微镜（FESEM）、拉曼光谱、穆斯堡尔光谱、振动样品磁强计（VSM）和N2吸附-解吸等温线。发现微晶尺寸在 13 至 43 nm 之间变化，具体取决于煅烧温度，并且它们表现出较低的 BET 表面积。多孔铜和锌铁氧体获得了球形和棒状的表面形貌。铜和钴铁氧体表现出纳米材料典型的铁磁特性。另一方面，铁氧体锌表现出超顺磁性。据报道，目前的铁氧体，特别是铁氧体铜，在可见光下 H2O2 存在下对亚甲基蓝的光降解表现出显着的催化活性。所有铁氧体材料在酸性介质中都表现出更好的活性。
Spinel MFe2O4 (M = Cu, Co and Zn) ferrites have been successfully synthesized via a wet chemical process assisted by albumin matrix and employed as catalyst for methylene blue (MB) degradation. The materials have been characterized by different techniques including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HR-TEM), field emission scanning electron microscopy (FESEM), Raman spectroscopy, Mossbauer spectroscopy, vibrating sample magnetometry (VSM) and N2 adsorption–desorption isotherm. The crystallite size is found to vary from 13 to 43 nm depending on the calcination temperature and they exhibit low BET surface area. Spherical and rod like surface morphology is obtained for porous copper and zinc ferrite. Copper and cobalt ferrite exhibit ferromagnetic properties typical of nanomaterials. On the other hand zinc ferrite shows superparamagnetic behavior. The current ferrites, specifically copper ferrite, are reported to exhibit significant catalytic activity for the photodegradation of methylene blue in the presence of H2O2 under visible light. All the ferrite materials show better activity in acidic medium.