Chitosan-stabilized gold nanoparticles supported on silica/titania magnetic xerogel applied as antibacterial system
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作者:
M. Deon
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机构:UFRGS,Instituto de Química
M. Deon
F. M. Morawski
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机构:UFRGS,Instituto de Química
F. M. Morawski
C. Passaia
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机构:UFRGS,Instituto de Química
C. Passaia
M. Dalmás
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机构:UFRGS,Instituto de Química
M. Dalmás
D. C. Laranja
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机构:UFRGS,Instituto de Química
D. C. Laranja
P. S. Malheiros
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机构:UFRGS,Instituto de Química
P. S. Malheiros
S. Nicolodi
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机构:UFRGS,Instituto de Química
S. Nicolodi
L. T. Arenas
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机构:UFRGS,Instituto de Química
L. T. Arenas
T. M. H. Costa
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机构:UFRGS,Instituto de Química
T. M. H. Costa
E. W. de Menezes
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机构:UFRGS,Instituto de Química
E. W. de Menezes
E. V. Benvenutti
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机构:UFRGS,Instituto de Química
E. V. Benvenutti
机构:
[1] UFRGS,Instituto de Química
[2] CP 15003,Instituto de Ciência e Tecnologia de Alimentos
[3] UFRGS,Instituto de Física
[4] CP 15015,undefined
[5] UFRGS,undefined
[6] CP 15051,undefined
来源:
Journal of Sol-Gel Science and Technology
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2019年
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89卷
关键词:
Core shell;
Magnetic composite;
Spherical metal nanoparticles;
Hybrid structure;
SiO;
/TiO;
mixed oxide;
D O I:
暂无
中图分类号:
学科分类号:
摘要:
The sol-gel method is an excellent choice to produce composite materials with enhanced performance by efficiently combining the individual features of their components. In this work, chitosan-stabilized gold nanoparticles (ChAuNPs) were immobilized onto a SiO2/TiO2 magnetic xerogel, which was synthesized through hetero-condensation of silica and titania precursors in the presence of magnetite particles covered with a silica shell. This system allies the antimicrobial capacity of ChAuNP, the surface reactivity of titania, porous structure of silica, and magnetic response of the magnetite particles. The magnetite phase was characterized by X-ray diffraction and the shape and size of the particles were observed by scanning and transmission electron microscopy. ChAuNPs were obtained in spherical shape with size below 10 nm, as characterized by UV–Vis spectroscopy and transmission electron microscopy. SiO2/TiO2 magnetic xerogel containing the ChAuNP was also characterized by thermogravimetric and textural analysis, transmission electron microscopy, and magnetism. The ChAuNP-SiO2/TiO2 magnetic xerogel is mesoporous with facile magnetic recovering and its performance as antimicrobial agent was assessed against the pathogen E. coli. The ChAuNP-SiO2/TiO2 magnetic xerogel presented inhibitory effect against the tested bacteria, even with such low gold content. After the magnetic recovering, the material was reused and maintained its antibacterial activity.
机构:
Prince Songkla Univ, Ctr Excellence Innovat Chem, Hat Yai 90110, Thailand
Prince Songkla Univ, Fac Sci, Div Phys Sci, Hat Yai 90110, Thailand
Prince Songkla Univ, Fac Sci & Technol, Div Sci, Analyt Chem & Environm Res Unit, Pattani 94000, ThailandPrince Songkla Univ, Ctr Excellence Innovat Chem, Hat Yai 90110, Thailand
Kuno, Asmah
Hama, Nuryanee
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机构:
Prince Songkla Univ, Ctr Excellence Innovat Chem, Hat Yai 90110, Thailand
Prince Songkla Univ, Fac Sci, Div Phys Sci, Hat Yai 90110, Thailand
Prince Songkla Univ, Fac Sci & Technol, Div Sci, Analyt Chem & Environm Res Unit, Pattani 94000, ThailandPrince Songkla Univ, Ctr Excellence Innovat Chem, Hat Yai 90110, Thailand
Hama, Nuryanee
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机构:
Wattanasin, Panwadee
Rujiralai, Thitima
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h-index: 0
机构:
Prince Songkla Univ, Ctr Excellence Innovat Chem, Hat Yai 90110, Thailand
Prince Songkla Univ, Fac Sci, Div Phys Sci, Hat Yai 90110, Thailand
Prince Songkla Univ, Fac Sci & Technol, Div Sci, Analyt Chem & Environm Res Unit, Pattani 94000, ThailandPrince Songkla Univ, Ctr Excellence Innovat Chem, Hat Yai 90110, Thailand
机构:
Chang Gung Univ, Dept Med Biotechnol & Lab Sci, Tao Yuan, Taiwan
Chang Gung Mem Hosp, Mol Imaging Ctr, Tao Yuan, TaiwanMing Chi Univ Technol, Dept Chem Engn, New Taipei, Taiwan
Shen, Chia-Rui
Wu, Shu-Ting
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机构:
Chang Gung Univ, Dept Med Biotechnol & Lab Sci, Tao Yuan, TaiwanMing Chi Univ Technol, Dept Chem Engn, New Taipei, Taiwan
Wu, Shu-Ting
Tsai, Zei-Tsan
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机构:
Chang Gung Mem Hosp, Mol Imaging Ctr, Tao Yuan, TaiwanMing Chi Univ Technol, Dept Chem Engn, New Taipei, Taiwan
Tsai, Zei-Tsan
Wang, Jiun-Jie
论文数: 0引用数: 0
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机构:
Chang Gung Mem Hosp, Mol Imaging Ctr, Tao Yuan, Taiwan
Chang Gung Univ, Dept Med Imaging & Radiol Sci, Tao Yuan, TaiwanMing Chi Univ Technol, Dept Chem Engn, New Taipei, Taiwan
Wang, Jiun-Jie
Yen, Tzu-Chen
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机构:
Chang Gung Mem Hosp, Mol Imaging Ctr, Tao Yuan, Taiwan
Chang Gung Univ, Dept Med Imaging & Radiol Sci, Tao Yuan, TaiwanMing Chi Univ Technol, Dept Chem Engn, New Taipei, Taiwan
Yen, Tzu-Chen
Tsai, Jin-Sheng
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机构:
Natl Synchrotron Radiat Res Ctr, Hsinchu, TaiwanMing Chi Univ Technol, Dept Chem Engn, New Taipei, Taiwan
Tsai, Jin-Sheng
Shih, Mei-Fen
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机构:
Chia Nan Univ Pharm & Sci, Dept Pharm, Tainan, TaiwanMing Chi Univ Technol, Dept Chem Engn, New Taipei, Taiwan
Shih, Mei-Fen
Liu, Chao-Lin
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机构:
Ming Chi Univ Technol, Dept Chem Engn, New Taipei, Taiwan
Ming Chi Univ Technol, Grad Sch Biochem Engn, New Taipei, TaiwanMing Chi Univ Technol, Dept Chem Engn, New Taipei, Taiwan