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Galvanic Replacement Reactions in Metal Oxide Nanocrystals.

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Title: Galvanic Replacement Reactions in Metal Oxide Nanocrystals.
Authors: Myoung Hwan Oh, Taekyung Yu, Yu, Seung-Ho, Byungkwon Lim, Ko, Kyung-Tae, Willinger, Marc-Georg, Seo, Dong-Hwa, Byung Hyo Kim, Min Gee Cho, Park, Jae-Hoon, Kisuk Kang, Sung, Yung-Eun, Pinna, Nicola, Taeghwan Hyeon
Source: Science (pre-March 2025). 5/24/2013, Vol. 340 Issue 6135, p964-968. 5p.
Subjects: Nanocrystals, Manganese oxides, Electrochemistry, Substitution reactions, Perchlorates, Anodes, Lithium-ion batteries, Metallic oxides, Crystallography
Abstract: Galvanic replacement reactions provide a simple and versatile route for producing hollow nanostructures with controllable pore structures and compositions. However, these reactions have previously been limited to the chemical transformation of metallic nanostructures. We demonstrated galvanic replacement reactions in metal oxide nanocrystals as well. When manganese oxide (Mn3O4) nanocrystals were reacted with iron(ll) perchlorate, hollow box-shaped nanocrystals of Mn3O4/ɣ-Fe3O4 ("nanoboxes") were produced. These nanoboxes ultimately transformed into hollow cagelike nanocrystals of ɣ-Fe3O4 ("nanocages"). Because of their nonequilibrium compositions and hollow structures, these nanoboxes and nanocages exhibited good performance as anode materials for lithium ion batteries. The generality of this approach was demonstrated with other metal pairs, including Co3O4/SnO2 and Mn3O4/SnO2. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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PubType: Academic Journal
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  Data: Galvanic Replacement Reactions in Metal Oxide Nanocrystals.
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  Data: <searchLink fieldCode="AR" term="%22Myoung+Hwan+Oh%22">Myoung Hwan Oh</searchLink><br /><searchLink fieldCode="AR" term="%22Taekyung+Yu%22">Taekyung Yu</searchLink><br /><searchLink fieldCode="AR" term="%22Yu%2C+Seung-Ho%22">Yu, Seung-Ho</searchLink><br /><searchLink fieldCode="AR" term="%22Byungkwon+Lim%22">Byungkwon Lim</searchLink><br /><searchLink fieldCode="AR" term="%22Ko%2C+Kyung-Tae%22">Ko, Kyung-Tae</searchLink><br /><searchLink fieldCode="AR" term="%22Willinger%2C+Marc-Georg%22">Willinger, Marc-Georg</searchLink><br /><searchLink fieldCode="AR" term="%22Seo%2C+Dong-Hwa%22">Seo, Dong-Hwa</searchLink><br /><searchLink fieldCode="AR" term="%22Byung+Hyo+Kim%22">Byung Hyo Kim</searchLink><br /><searchLink fieldCode="AR" term="%22Min+Gee+Cho%22">Min Gee Cho</searchLink><br /><searchLink fieldCode="AR" term="%22Park%2C+Jae-Hoon%22">Park, Jae-Hoon</searchLink><br /><searchLink fieldCode="AR" term="%22Kisuk+Kang%22">Kisuk Kang</searchLink><br /><searchLink fieldCode="AR" term="%22Sung%2C+Yung-Eun%22">Sung, Yung-Eun</searchLink><br /><searchLink fieldCode="AR" term="%22Pinna%2C+Nicola%22">Pinna, Nicola</searchLink><br /><searchLink fieldCode="AR" term="%22Taeghwan+Hyeon%22">Taeghwan Hyeon</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 5/24/2013, Vol. 340 Issue 6135, p964-968. 5p.
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  Data: <searchLink fieldCode="DE" term="%22Nanocrystals%22">Nanocrystals</searchLink><br /><searchLink fieldCode="DE" term="%22Manganese+oxides%22">Manganese oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemistry%22">Electrochemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Substitution+reactions%22">Substitution reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Perchlorates%22">Perchlorates</searchLink><br /><searchLink fieldCode="DE" term="%22Anodes%22">Anodes</searchLink><br /><searchLink fieldCode="DE" term="%22Lithium-ion+batteries%22">Lithium-ion batteries</searchLink><br /><searchLink fieldCode="DE" term="%22Metallic+oxides%22">Metallic oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Crystallography%22">Crystallography</searchLink>
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  Data: Galvanic replacement reactions provide a simple and versatile route for producing hollow nanostructures with controllable pore structures and compositions. However, these reactions have previously been limited to the chemical transformation of metallic nanostructures. We demonstrated galvanic replacement reactions in metal oxide nanocrystals as well. When manganese oxide (Mn3O4) nanocrystals were reacted with iron(ll) perchlorate, hollow box-shaped nanocrystals of Mn3O4/ɣ-Fe3O4 ("nanoboxes") were produced. These nanoboxes ultimately transformed into hollow cagelike nanocrystals of ɣ-Fe3O4 ("nanocages"). Because of their nonequilibrium compositions and hollow structures, these nanoboxes and nanocages exhibited good performance as anode materials for lithium ion batteries. The generality of this approach was demonstrated with other metal pairs, including Co3O4/SnO2 and Mn3O4/SnO2. [ABSTRACT FROM AUTHOR]
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  Group: Ab
  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=87932933
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        Value: 10.1126/science.1234751
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        Text: English
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      – SubjectFull: Manganese oxides
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      – SubjectFull: Electrochemistry
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      – SubjectFull: Substitution reactions
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      – SubjectFull: Perchlorates
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      – SubjectFull: Anodes
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      – SubjectFull: Lithium-ion batteries
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      – SubjectFull: Metallic oxides
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              Text: 5/24/2013
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