论文标题

纳米化铁沸石的水热合成,结构和抗菌研究

Hydrothermal synthesis, structure, and antibacterial studies of a nanosized iron zeolite

论文作者

El-Nassera, Karam S., Taha, T. A., Alia, Ibraheem O., Donya, Hossam

论文摘要

本研究探讨了Fe ZSM 5的Fe量掺入百分比的影响。通过将NaOH和HCl溶液应用于连续的化学处理中,从当地的稻壳稻草(白色颗粒)中提取的二氧化硅用于连续化学处理,用于FEZSM 5的水热合成,具有常数SI(Fe Plus Plus Al)的比例。通过X射线衍射分析(XRD),扫描电子显微镜(SEM),傅立叶变换红外光谱(FTIR),UV VIS光谱,差异扫描(DSC)和孔通过n2 adsSorption进行了196。 XRD分析揭示了典型的ZSM 5结构,其新的衍射线归因于铁硅酸盐相。 ZSM 5样品的FTIR光谱分析显示了一个归因于SIOFE组的656 cm的新带。此类涂层对不同种类的细菌的抗菌活性,例如肺炎链球菌,枯草芽孢杆菌,大肠杆菌和铜绿假单胞菌,以及真菌,例如烟曲霉和白色念珠菌,用于研究的ZSM 5和Fe(20和100个百分比)样品显示了选择性的抗体抗体作用。

The present research explores the effects of Percentage Fe incorporation on the structure and antibacterial activity of Fe ZSM 5. Silica extracted from local rice husk straw (white particles) by applying NaOH and HCl solutions for consecutive chemical treatment was used for hydrothermal synthesis of FeZSM 5 with constant Si(Fe plus Al) ratios. The chemical and physical changes of ZSM 5 and Fe ZSM 5 surfaces were investigated by X ray diffraction analysis (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), UV Vis spectroscopy, differential scanning calorimetry (DSC), and pore structure analysis by N2 adsorption at 196 . XRD analysis revealed the typical ZSM 5 structure with new diffraction lines attributed to the iron silicate phase. FTIR spectral analysis of ZSM 5 samples containing iron display a new band at 656 cm that is ascribed to the SiOFe group. The antibacterial activity of such coatings towards different kinds of bacteria, such as S. pneumonia, B. subtilis, E. coli and P. aeruginosa, and fungi, such as A. fumigatus and C. albicans, for investigated ZSM 5 and Fe (20 and 100 percentages) samples showed selective antibacterial actions.

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