Synthesis, characterization and magnetic properties of hematite (α-Fe2O3) nanoparticles on polysaccharide templates and their antibacterial activity

被引:0
作者
M. Mohamed Rafi
K. Syed Zameer Ahmed
K. Prem Nazeer
D. Siva Kumar
M. Thamilselvan
机构
[1] C. Abdul Hakeem College,Department of Physics
[2] C. Abdul Hakeem College,Department of Biochemistry
[3] Islamiah College,PG and Research Department of Physics
[4] TPGIT,Department of Physics
来源
Applied Nanoscience | 2015年 / 5卷
关键词
Iron oxide nanoparticles; Polysaccharides; Ferromagnetism; Antibacterial activity;
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摘要
The present study is to synthesize iron oxide nanoparticles on different polysaccharide templates calcined at controlled temperature, characterizing them for spectroscopic and magnetic studies leading to evaluate their antibacterial property. The synthesized iron oxide nanoparticles were characterized by X-ray diffractometer (XRD), Fourier transform infrared spectroscopy, high resolution scanning electron microscopy (HRSEM), high resolution transmission electron microscopy (HRTEM) and vibrating sample magnetometer. The iron oxide nanoparticles were tested for antibacterial activity against gram-positive and gram-negative bacterial species. The XRD confirms the crystalline nature of iron oxide nanoparticles with the mean crystallite size of 10 nm. The functional groups of the synthesized iron oxide nanoparticles were 547, 543 and 544 cm–1 characterizing the Fe–O and the broad bands at 3,398, 3,439 and 3,427 cm–1 were attributed to the stretching vibrations of hydroxyl group absorbed by iron oxide nanoparticles. HRTEM analyses revealed that the average particle size of the hematite nanoparticles are about 85, 92 and 77 nm for AF, DF and GF, respectively, which was a coincident with the results obtained from the HRSEM analysis. Magnetic measurement exhibited ferromagnetic behavior of the α-Fe2O3 at the room temperature with higher coercivity of HC = 2,303, 2,333 and 1,019 Oe for AF, DF and GF, respectively. Antibacterial test showed the inhibition against Aeromonas hydrophila and Escherichia coli with significant antagonistic activity.
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页码:515 / 520
页数:5
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共 112 条
[1]  
Barron V(1996)Surface hydroxyl configuration of various crystal faces of hematite and goethite J Colloid Interf Sci 177 407-410
[2]  
Torrent J(2005)Macroscopic nanotemplating of semiconductor films with hydrogen-bonded lyotropic liquid crystals Adv Funct Mater 15 1745-1750
[3]  
Braun PV(2006)Shape and magnetic properties of single-crystalline hematite (α-Fe Chem Phys Chem 7 1897-1901
[4]  
Osenar P(2006)O J Solid State Chem 179 716-722
[5]  
Twardowski M(2008)) nanocrystals J Mater Chem 18 5041-5045
[6]  
Tew GN(2008)The transformation of ferrihydrite into goethite or hematite, revisited Biomaterials 26 3995-4021
[7]  
Stupp SI(2002)Magnetically responsive colloidal photonic crystals J Mater Chem 12 1401-1407
[8]  
Cao H(1989)Synthesis and surface engineering of iron oxide nanoparticles for biomedical applications J Photo chem Photo biol A Chem 48 161-169
[9]  
Wang G(2008)Influence of the silica based matrix on the formation of iron oxide nanoparticles in the Fe Chem Rev 108 2064-2110
[10]  
Zhang L(2005)O J Solid State Chem 178 2798-2803