Air-stable superparamagnetic metal nanoparticles entrapped in graphene oxide matrix

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43901892" target="_blank" >RIV/60461373:22310/16:43901892 - isvavai.cz</a>

Alternative codes found

RIV/68081731:_____/16:00466384

Result on the web

<a href="http://www.nature.com/articles/ncomms12879" target="_blank" >http://www.nature.com/articles/ncomms12879</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/ncomms12879" target="_blank" >10.1038/ncomms12879</a>

Result language

angličtina

Original language name

Air-stable superparamagnetic metal nanoparticles entrapped in graphene oxide matrix

Original language description

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 Am-2 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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CA - Inorganic chemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

NATURE COMMUNICATIONS

ISSN

2041-1723

e-ISSN

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Volume of the periodical

7

Issue of the periodical within the volume

SEP 2016

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

12879

UT code for WoS article

000385384100013

EID of the result in the Scopus database

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