The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Ondřej Tomanec - One of the best experts on this subject based on the ideXlab platform.
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air stable superparamagnetic metal nanoparticles entrapped in graphene Oxide Matrix
Nature Communications, 2016Co-Authors: Jiři Tucek, Zdeněk Sofer, Daniel Bousa, Martin Pumera, Kateřina Hola, Aneta Mala, Kateřina Polakova, Marketa Havrdova, Klara Cepe, Ondřej TomanecAbstract:Zero-valent metallic nanoparticles can exhibit superparamagnetism, due to quantum effects in magnetic nanomaterials, but their syntheses can be hindered by chemical instability. Here, the authors prepare air-stable superparamagnetic nanoparticles trapped between thermally reduced graphene Oxide nanosheets.
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retraction note air stable superparamagnetic metal nanoparticles entrapped in graphene Oxide Matrix
Nature Communications, 2016Co-Authors: Jiři Tucek, Zdeněk Sofer, Daniel Bousa, Martin Pumera, Kateřina Hola, Aneta Mala, Kateřina Polakova, Marketa Havrdova, Klara Cepe, Ondřej TomanecAbstract:Superparamagnetism is a phenomenon caused by quantum effects in magnetic nanomaterials. Zero-valent metals with diameters below 5 nm have been suggested as superior alternatives to superparamagnetic metal Oxides, having greater superspin magnitudes and lower levels of magnetic disorder. However, synthesis of such nanometals has been hindered by their chemical instability. Here we present a method for preparing air-stable superparamagnetic iron nanoparticles trapped between thermally reduced graphene Oxide nanosheets and exhibiting ring-like or core-shell morphologies depending on iron concentration. Importantly, these hybrids show superparamagnetism at room temperature and retain it even at 5 K. The corrected saturation magnetization of 185 Am2 kg–1 is among the highest values reported for iron-based superparamagnets. The synthetic concept is generalized exploiting functional groups of graphene Oxide to stabilize and entrap cobalt, nickel and gold nanoparticles, potentially opening doors for targeted delivery, magnetic separation and imaging applications. Zero-valent metallic nanoparticles can exhibit superparamagnetism, due to quantum effects in magnetic nanomaterials, but their syntheses can be hindered by chemical instability. Here, the authors prepare air-stable superparamagnetic nanoparticles trapped between thermally reduced graphene Oxide nanosheets.
Jiři Tucek - One of the best experts on this subject based on the ideXlab platform.
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air stable superparamagnetic metal nanoparticles entrapped in graphene Oxide Matrix
Nature Communications, 2016Co-Authors: Jiři Tucek, Zdeněk Sofer, Daniel Bousa, Martin Pumera, Kateřina Hola, Aneta Mala, Kateřina Polakova, Marketa Havrdova, Klara Cepe, Ondřej TomanecAbstract:Zero-valent metallic nanoparticles can exhibit superparamagnetism, due to quantum effects in magnetic nanomaterials, but their syntheses can be hindered by chemical instability. Here, the authors prepare air-stable superparamagnetic nanoparticles trapped between thermally reduced graphene Oxide nanosheets.
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retraction note air stable superparamagnetic metal nanoparticles entrapped in graphene Oxide Matrix
Nature Communications, 2016Co-Authors: Jiři Tucek, Zdeněk Sofer, Daniel Bousa, Martin Pumera, Kateřina Hola, Aneta Mala, Kateřina Polakova, Marketa Havrdova, Klara Cepe, Ondřej TomanecAbstract:Superparamagnetism is a phenomenon caused by quantum effects in magnetic nanomaterials. Zero-valent metals with diameters below 5 nm have been suggested as superior alternatives to superparamagnetic metal Oxides, having greater superspin magnitudes and lower levels of magnetic disorder. However, synthesis of such nanometals has been hindered by their chemical instability. Here we present a method for preparing air-stable superparamagnetic iron nanoparticles trapped between thermally reduced graphene Oxide nanosheets and exhibiting ring-like or core-shell morphologies depending on iron concentration. Importantly, these hybrids show superparamagnetism at room temperature and retain it even at 5 K. The corrected saturation magnetization of 185 Am2 kg–1 is among the highest values reported for iron-based superparamagnets. The synthetic concept is generalized exploiting functional groups of graphene Oxide to stabilize and entrap cobalt, nickel and gold nanoparticles, potentially opening doors for targeted delivery, magnetic separation and imaging applications. Zero-valent metallic nanoparticles can exhibit superparamagnetism, due to quantum effects in magnetic nanomaterials, but their syntheses can be hindered by chemical instability. Here, the authors prepare air-stable superparamagnetic nanoparticles trapped between thermally reduced graphene Oxide nanosheets.
Klara Cepe - One of the best experts on this subject based on the ideXlab platform.
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air stable superparamagnetic metal nanoparticles entrapped in graphene Oxide Matrix
Nature Communications, 2016Co-Authors: Jiři Tucek, Zdeněk Sofer, Daniel Bousa, Martin Pumera, Kateřina Hola, Aneta Mala, Kateřina Polakova, Marketa Havrdova, Klara Cepe, Ondřej TomanecAbstract:Zero-valent metallic nanoparticles can exhibit superparamagnetism, due to quantum effects in magnetic nanomaterials, but their syntheses can be hindered by chemical instability. Here, the authors prepare air-stable superparamagnetic nanoparticles trapped between thermally reduced graphene Oxide nanosheets.
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retraction note air stable superparamagnetic metal nanoparticles entrapped in graphene Oxide Matrix
Nature Communications, 2016Co-Authors: Jiři Tucek, Zdeněk Sofer, Daniel Bousa, Martin Pumera, Kateřina Hola, Aneta Mala, Kateřina Polakova, Marketa Havrdova, Klara Cepe, Ondřej TomanecAbstract:Superparamagnetism is a phenomenon caused by quantum effects in magnetic nanomaterials. Zero-valent metals with diameters below 5 nm have been suggested as superior alternatives to superparamagnetic metal Oxides, having greater superspin magnitudes and lower levels of magnetic disorder. However, synthesis of such nanometals has been hindered by their chemical instability. Here we present a method for preparing air-stable superparamagnetic iron nanoparticles trapped between thermally reduced graphene Oxide nanosheets and exhibiting ring-like or core-shell morphologies depending on iron concentration. Importantly, these hybrids show superparamagnetism at room temperature and retain it even at 5 K. The corrected saturation magnetization of 185 Am2 kg–1 is among the highest values reported for iron-based superparamagnets. The synthetic concept is generalized exploiting functional groups of graphene Oxide to stabilize and entrap cobalt, nickel and gold nanoparticles, potentially opening doors for targeted delivery, magnetic separation and imaging applications. Zero-valent metallic nanoparticles can exhibit superparamagnetism, due to quantum effects in magnetic nanomaterials, but their syntheses can be hindered by chemical instability. Here, the authors prepare air-stable superparamagnetic nanoparticles trapped between thermally reduced graphene Oxide nanosheets.
Kateřina Polakova - One of the best experts on this subject based on the ideXlab platform.
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air stable superparamagnetic metal nanoparticles entrapped in graphene Oxide Matrix
Nature Communications, 2016Co-Authors: Jiři Tucek, Zdeněk Sofer, Daniel Bousa, Martin Pumera, Kateřina Hola, Aneta Mala, Kateřina Polakova, Marketa Havrdova, Klara Cepe, Ondřej TomanecAbstract:Zero-valent metallic nanoparticles can exhibit superparamagnetism, due to quantum effects in magnetic nanomaterials, but their syntheses can be hindered by chemical instability. Here, the authors prepare air-stable superparamagnetic nanoparticles trapped between thermally reduced graphene Oxide nanosheets.
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retraction note air stable superparamagnetic metal nanoparticles entrapped in graphene Oxide Matrix
Nature Communications, 2016Co-Authors: Jiři Tucek, Zdeněk Sofer, Daniel Bousa, Martin Pumera, Kateřina Hola, Aneta Mala, Kateřina Polakova, Marketa Havrdova, Klara Cepe, Ondřej TomanecAbstract:Superparamagnetism is a phenomenon caused by quantum effects in magnetic nanomaterials. Zero-valent metals with diameters below 5 nm have been suggested as superior alternatives to superparamagnetic metal Oxides, having greater superspin magnitudes and lower levels of magnetic disorder. However, synthesis of such nanometals has been hindered by their chemical instability. Here we present a method for preparing air-stable superparamagnetic iron nanoparticles trapped between thermally reduced graphene Oxide nanosheets and exhibiting ring-like or core-shell morphologies depending on iron concentration. Importantly, these hybrids show superparamagnetism at room temperature and retain it even at 5 K. The corrected saturation magnetization of 185 Am2 kg–1 is among the highest values reported for iron-based superparamagnets. The synthetic concept is generalized exploiting functional groups of graphene Oxide to stabilize and entrap cobalt, nickel and gold nanoparticles, potentially opening doors for targeted delivery, magnetic separation and imaging applications. Zero-valent metallic nanoparticles can exhibit superparamagnetism, due to quantum effects in magnetic nanomaterials, but their syntheses can be hindered by chemical instability. Here, the authors prepare air-stable superparamagnetic nanoparticles trapped between thermally reduced graphene Oxide nanosheets.
Aneta Mala - One of the best experts on this subject based on the ideXlab platform.
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air stable superparamagnetic metal nanoparticles entrapped in graphene Oxide Matrix
Nature Communications, 2016Co-Authors: Jiři Tucek, Zdeněk Sofer, Daniel Bousa, Martin Pumera, Kateřina Hola, Aneta Mala, Kateřina Polakova, Marketa Havrdova, Klara Cepe, Ondřej TomanecAbstract:Zero-valent metallic nanoparticles can exhibit superparamagnetism, due to quantum effects in magnetic nanomaterials, but their syntheses can be hindered by chemical instability. Here, the authors prepare air-stable superparamagnetic nanoparticles trapped between thermally reduced graphene Oxide nanosheets.
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retraction note air stable superparamagnetic metal nanoparticles entrapped in graphene Oxide Matrix
Nature Communications, 2016Co-Authors: Jiři Tucek, Zdeněk Sofer, Daniel Bousa, Martin Pumera, Kateřina Hola, Aneta Mala, Kateřina Polakova, Marketa Havrdova, Klara Cepe, Ondřej TomanecAbstract:Superparamagnetism is a phenomenon caused by quantum effects in magnetic nanomaterials. Zero-valent metals with diameters below 5 nm have been suggested as superior alternatives to superparamagnetic metal Oxides, having greater superspin magnitudes and lower levels of magnetic disorder. However, synthesis of such nanometals has been hindered by their chemical instability. Here we present a method for preparing air-stable superparamagnetic iron nanoparticles trapped between thermally reduced graphene Oxide nanosheets and exhibiting ring-like or core-shell morphologies depending on iron concentration. Importantly, these hybrids show superparamagnetism at room temperature and retain it even at 5 K. The corrected saturation magnetization of 185 Am2 kg–1 is among the highest values reported for iron-based superparamagnets. The synthetic concept is generalized exploiting functional groups of graphene Oxide to stabilize and entrap cobalt, nickel and gold nanoparticles, potentially opening doors for targeted delivery, magnetic separation and imaging applications. Zero-valent metallic nanoparticles can exhibit superparamagnetism, due to quantum effects in magnetic nanomaterials, but their syntheses can be hindered by chemical instability. Here, the authors prepare air-stable superparamagnetic nanoparticles trapped between thermally reduced graphene Oxide nanosheets.
