Manganese ferrite graphene nanocomposite synthesis and the investigation of its antibacterial properties for water treatment purposes
The main objective of this study was to synthesize a nanocomposite using graphene and manganese ferrite nanoparticles (MnFe2O4-G) and to evaluate its antibacterial activity for water treatment purposes. Its morphological characteristics were evaluated by instrumental techniques, such as scanning ele...
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| Published in: | Revista ambiente & água Vol. 15; no. 4; pp. 1 - 12 |
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| Format: | Journal Article |
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Taubaté
Instituto de Pesquisas Ambientais em Bacias Hidrográficas
2020
Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHi) |
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| Abstract | The main objective of this study was to synthesize a nanocomposite using graphene and manganese ferrite nanoparticles (MnFe2O4-G) and to evaluate its antibacterial activity for water treatment purposes. Its morphological characteristics were evaluated by instrumental techniques, such as scanning electron microscopy and transmission electron microscopy. The characterization results indicated that the nanocomposite presented nanoparticles of approximately 25 nm well dispersed in transparent and large (14 μm) graphene nanosheets. The antibacterial activity was evaluated in a batch experiment using a concentration of 40 μg mL-1 of nanocomposite (MnFe2O4-G, bare MnFe2O4 nanoparticles or graphene oxide), 1x105 CFU mL-1 of Escherichia coli, and 8 h of contact time at room temperature. The highest antibacterial capacity was observed for the hybrid nanocomposite (91.91%), due to the synergic effect of graphene and MnFe2O4 nanoparticles. Various mechanisms were proposed to explain the effective antibacterial activity of MnFe2O4-G, such as wrapping, oxidative stress, sharp-edge cutting effect, among others. The results showed that MnFe2O4-G is a potential alternative in water treatment processes as an antibacterial agent. |
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| AbstractList | The main objective of this study was to synthesize a nanocomposite using graphene and manganese ferrite nanoparticles (MnFe2O4-G) and to evaluate its antibacterial activity for water treatment purposes. Its morphological characteristics were evaluated by instrumental techniques, such as scanning electron microscopy and transmission electron microscopy. The characterization results indicated that the nanocomposite presented nanoparticles of approximately 25 nm well dispersed in transparent and large (14 μm) graphene nanosheets. The antibacterial activity was evaluated in a batch experiment using a concentration of 40 μg mL-1 of nanocomposite (MnFe2O4-G, bare MnFe2O4 nanoparticles or graphene oxide), 1x105 CFU mL-1 of Escherichia coli, and 8 h of contact time at room temperature. The highest antibacterial capacity was observed for the hybrid nanocomposite (91.91%), due to the synergic effect of graphene and MnFe2O4 nanoparticles. Various mechanisms were proposed to explain the effective antibacterial activity of MnFe2O4-G, such as wrapping, oxidative stress, sharp-edge cutting effect, among others. The results showed that MnFe2O4-G is a potential alternative in water treatment processes as an antibacterial agent. The main objective of this study was to synthesize a nanocomposite using graphene and manganese ferrite nanoparticles (MnFe2Ö4-G) and to evaluate its antibacterial activity for water treatment purposes. Its morphological characteristics were evaluated by instrumental techniques, such as scanning electron microscopy and transmission electron microscopy. The characterization results indicated that the nanocomposite presented nanoparticles of approximately 25 nm well dispersed in transparent and large (14 pm) graphene nanosheets. The antibacterial activity was evaluated in a batch experiment using a concentration of 40 pg mL-1 of nanocomposite (MnFe2Ö4-G, bare MnFe2Ö4 nanoparticles or graphene oxide), 1x105 CFU mL-1 of Escherichia coli, and 8 h of contact time at room temperature. The highest antibacterial capacity was observed for the hybrid nanocomposite (91.91%), due to the synergic effect of graphene and MnFe2Ö4 nanoparticles. Various mechanisms were proposed to explain the effective antibacterial activity of MnFe2Ö4-G, such as wrapping, oxidative stress, sharp-edge cutting effect, among others. The results showed that MnFe2Ö4-G is a potential alternative in water treatment processes as an antibacterial agent. Abstract The main objective of this study was to synthesize a nanocomposite using graphene and manganese ferrite nanoparticles (MnFe2O4-G) and to evaluate its antibacterial activity for water treatment purposes. Its morphological characteristics were evaluated by instrumental techniques, such as scanning electron microscopy and transmission electron microscopy. The characterization results indicated that the nanocomposite presented nanoparticles of approximately 25 nm well dispersed in transparent and large (14 μm) graphene nanosheets. The antibacterial activity was evaluated in a batch experiment using a concentration of 40 μg mL-1 of nanocomposite (MnFe2O4-G, bare MnFe2O4 nanoparticles or graphene oxide), 1x105 CFU mL-1 of Escherichia coli, and 8 h of contact time at room temperature. The highest antibacterial capacity was observed for the hybrid nanocomposite (91.91%), due to the synergic effect of graphene and MnFe2O4 nanoparticles. Various mechanisms were proposed to explain the effective antibacterial activity of MnFe2O4-G, such as wrapping, oxidative stress, sharp-edge cutting effect, among others. The results showed that MnFe2O4-G is a potential alternative in water treatment processes as an antibacterial agent. |
| Author | Ferreira, Maria Eliana Camargo Kassada, Alex Toshio Abreu Filho, Benício Alves de Soletti, Lara De Souza Yamaguchi, Natália Ueda Bergamasco, Rosangela |
| AuthorAffiliation | Universidade Cesumar Universidade Estadual de Maringá |
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| Copyright | 2020. This work is published under https://creativecommons.org/licenses/by/4.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. This work is licensed under a Creative Commons Attribution 4.0 International License. |
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| Keywords | antimicrobial magnetic nanoparticle magnético nanopartícula antimicrobiano |
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| Snippet | The main objective of this study was to synthesize a nanocomposite using graphene and manganese ferrite nanoparticles (MnFe2O4-G) and to evaluate its... The main objective of this study was to synthesize a nanocomposite using graphene and manganese ferrite nanoparticles (MnFe2Ö4-G) and to evaluate its... Abstract The main objective of this study was to synthesize a nanocomposite using graphene and manganese ferrite nanoparticles (MnFe2O4-G) and to evaluate its... |
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| SubjectTerms | Antibacterial activity Antibiotics antimicrobial Cytotoxicity Dispersion Drinking water E coli Electron microscopy ENGINEERING, ENVIRONMENTAL Escherichia coli Ferrites Graphene magnetic Manganese Nanocomposites Nanomaterials nanoparticle Nanoparticles Oxidative stress Pathogens Physical characteristics Room temperature Scanning electron microscopy Transmission electron microscopy Water treatment |
| Title | Manganese ferrite graphene nanocomposite synthesis and the investigation of its antibacterial properties for water treatment purposes |
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