纬-Fe₂O₃ nanoparticles: An easily recoverable effective photo-catalyst for the degradation of rose bengal and methylene blue dyes in the waste-water treatment plant

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• 作者：Amit Kumar Dutta ; Swarup Kumar Maji ; Bibhutosh Adhikary
• 关键词：A. Magnetic materials ; A. Nanostructures ; C. Thermogravimetric analysis (TGA) ; D. Catalytic properties ; D. Optical properties
• 刊名：Materials Research Bulletin
• 出版年：January, 2014
• 年：2014
• 卷：49
• 期：Complete
• 页码：28-34
• 全文大小：1949 K

文摘

纬-Fe₂O₃ nanoparticles (NPs) were synthesized from a single-source precursor complex [Fe₃O(C₆H₅COO)₆(H₂O)₃]NO₃ by a simple thermal decomposition process and have been characterized by X-ray diffraction analysis (XRD), transmission electron microscopy (TEM) and UV-vis spectroscopic techniques. The NPs were highly pure and well crystallized having hexagonal morphology with an average particle size of 35 nm. The prepared 纬-Fe₂O₃ (maghemite) NPs show effective photo-catalytic activity toward the degradation of rose bengal (RB) and methylene blue (MB) dyes under visible light irradiation and can easily be recoverable in the presence of magnetic field for successive re-uses. The possible photo-catalytic decomposition mechanism is discussed through the detection of hydroxyl radical (OH) by terephthalic acid photo-luminescence probing technique.