Bi-directional-bi-dimensionality alignment of self-supporting Mn3O4 nanorod and nanotube arrays with different bacteriostasis and magnetism

Self-supported Mn3O4 patterns of aligned nanorods and nanotubes were synthesized through a bi-directional-bi-dimensionality growth model by using sodium gluconate and urea as additives under mild hydrothermal conditions without the use of any substrates. In one direction, Mn3O4 grows to form one-dim...

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Bibliographic Details
Published in:Nanoscale 2013-12, Vol.5 (24), p.12231
Main Authors: Chen, Qun, Wei, Chengzhen, Gao, Feng, Pang, Huan, Lu, Qingyi
Format: Article
Language:English
Subjects:
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Bacillus subtilis - drug effects
Bacillus subtilis - growth & development
Enterobacter cloacae - drug effects
Enterobacter cloacae - growth & development
Enterococcus faecalis - drug effects
Enterococcus faecalis - growth & development
Magnets - chemistry
Magnets - microbiology
Manganese Compounds - chemistry
Manganese Compounds - pharmacology
Microbial Sensitivity Tests
Nanotubes - chemistry
Nanotubes - microbiology
Oxides - chemistry
Oxides - pharmacology
Pseudomonas aeruginosa - drug effects
Pseudomonas aeruginosa - growth & development
Semiconductors - microbiology
Staphylococcus aureus - drug effects
Staphylococcus aureus - growth & development
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Summary:Self-supported Mn3O4 patterns of aligned nanorods and nanotubes were synthesized through a bi-directional-bi-dimensionality growth model by using sodium gluconate and urea as additives under mild hydrothermal conditions without the use of any substrates. In one direction, Mn3O4 grows to form one-dimensional nanorods or nanotubes, while in the other direction Mn3O4 grows into two-dimensional nanoplates to support the nanorods or nanotubes to align into arrays. These two kinds of new nanostructures, a nanotube pattern and a nanorod pattern, show similar and good bacteriostasis for Gram positive bacteria, but for Gram negative bacteria the nanotube pattern shows much better bacterial restraint than the nanorod pattern. Magnetic studies show that the nanorod arrays display similar magnetic properties to the commercial Mn3O4, while the nanotube arrays show different ferromagnetic behaviors with enhanced remnant magnetization and saturation magnetization (Ms) at low temperature.
ISSN:2040-3364
2040-3372
DOI:10.1039/c3nr03453d