Effects of Gas Composition on Highly Efficient Surface Modification of Multi-Walled Carbon Nanotubes by Cation Treatment
High incident energy hydrogen and/or oxygen cations are generated by electron cyclotron resonance system, and then used to highly efficiently modify multi-walled carbon nanotubes (MWCNTs). The effects of various H₂/O₂ gas compositions on the modification process are studied. A systematic characteriz...
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| Veröffentlicht in: | Nanoscale research letters 2008-12, Vol.4 (3), p.234-239, Article 234 |
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| description | High incident energy hydrogen and/or oxygen cations are generated by electron cyclotron resonance system, and then used to highly efficiently modify multi-walled carbon nanotubes (MWCNTs). The effects of various H₂/O₂ gas compositions on the modification process are studied. A systematic characterization method utilizing a combination of X-ray photoelectron spectroscopy (XPS), scanning electron microscopy, Raman spectroscopy, and thermogravimetric analysis (TGA) is used to evaluate the effects of various H₂/O₂ gas compositions on MWCNT functionalization. The Raman results show that the I D/I G ratio is directly affected by H₂ concentration in gas mixture, and the treatment applying a H₂/O₂ gas mixture with ratio of 40/10 (sccm/sccm) can yield the nanotubes with the highest I D/I G ratio (1.27). The XPS results suggest that the gas mixture with ratio of 25/25 (sccm/sccm) is most effective in introducing oxygen-containing functional groups and reducing amorphous carbon. The TGA suggests that the structural change of the treated nanotubes is marginal by this method with any gas condition. |
| doi_str_mv | 10.1007/s11671-008-9231-4 |
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The effects of various H₂/O₂ gas compositions on the modification process are studied. A systematic characterization method utilizing a combination of X-ray photoelectron spectroscopy (XPS), scanning electron microscopy, Raman spectroscopy, and thermogravimetric analysis (TGA) is used to evaluate the effects of various H₂/O₂ gas compositions on MWCNT functionalization. The Raman results show that the I D/I G ratio is directly affected by H₂ concentration in gas mixture, and the treatment applying a H₂/O₂ gas mixture with ratio of 40/10 (sccm/sccm) can yield the nanotubes with the highest I D/I G ratio (1.27). The XPS results suggest that the gas mixture with ratio of 25/25 (sccm/sccm) is most effective in introducing oxygen-containing functional groups and reducing amorphous carbon. The TGA suggests that the structural change of the treated nanotubes is marginal by this method with any gas condition.</description><identifier>ISSN: 1931-7573</identifier><identifier>ISSN: 1556-276X</identifier><identifier>EISSN: 1556-276X</identifier><identifier>DOI: 10.1007/s11671-008-9231-4</identifier><identifier>PMID: 20596368</identifier><language>eng</language><publisher>New York: New York : Springer-Verlag</publisher><subject>Carbon ; Cations ; Chemistry and Materials Science ; Cyclotron resonance ; Electron cyclotron resonance ; Functional groups ; Gas composition ; Gas mixtures ; Immunoglobulins ; Ions ; Materials Science ; Molecular Medicine ; Multi wall carbon nanotubes ; Nano Express ; Nanochemistry ; Nanoscale Science and Technology ; Nanotechnology ; Nanotechnology and Microengineering ; Nanotubes ; Oxygen ; Photoelectron spectroscopy ; Photoelectrons ; Raman spectroscopy ; Scanning electron microscopy ; Spectroscopy ; Spectrum analysis ; Thermogravimetric analysis ; X ray photoelectron spectroscopy</subject><ispartof>Nanoscale research letters, 2008-12, Vol.4 (3), p.234-239, Article 234</ispartof><rights>to the authors 2008</rights><rights>to the authors 2008. This work is published under http://creativecommons.org/licenses/by/2/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>Copyright ©2008 to the authors 2008 to the authors</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c559t-11e6fa76468c59fcef0dde5a806bc38768ea812f4d388dd514275053f85d62d03</citedby><cites>FETCH-LOGICAL-c559t-11e6fa76468c59fcef0dde5a806bc38768ea812f4d388dd514275053f85d62d03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC2894237/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC2894237/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,27901,27902,53766,53768</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20596368$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Tseng, Wen-Shou</creatorcontrib><creatorcontrib>Tseng, Chyuan-Yow</creatorcontrib><creatorcontrib>Kuo, Cheng-Tzu</creatorcontrib><title>Effects of Gas Composition on Highly Efficient Surface Modification of Multi-Walled Carbon Nanotubes by Cation Treatment</title><title>Nanoscale research letters</title><addtitle>Nanoscale Res Lett</addtitle><addtitle>Nanoscale Res Lett</addtitle><description>High incident energy hydrogen and/or oxygen cations are generated by electron cyclotron resonance system, and then used to highly efficiently modify multi-walled carbon nanotubes (MWCNTs). The effects of various H₂/O₂ gas compositions on the modification process are studied. A systematic characterization method utilizing a combination of X-ray photoelectron spectroscopy (XPS), scanning electron microscopy, Raman spectroscopy, and thermogravimetric analysis (TGA) is used to evaluate the effects of various H₂/O₂ gas compositions on MWCNT functionalization. The Raman results show that the I D/I G ratio is directly affected by H₂ concentration in gas mixture, and the treatment applying a H₂/O₂ gas mixture with ratio of 40/10 (sccm/sccm) can yield the nanotubes with the highest I D/I G ratio (1.27). The XPS results suggest that the gas mixture with ratio of 25/25 (sccm/sccm) is most effective in introducing oxygen-containing functional groups and reducing amorphous carbon. The TGA suggests that the structural change of the treated nanotubes is marginal by this method with any gas condition.</description><subject>Carbon</subject><subject>Cations</subject><subject>Chemistry and Materials Science</subject><subject>Cyclotron resonance</subject><subject>Electron cyclotron resonance</subject><subject>Functional groups</subject><subject>Gas composition</subject><subject>Gas mixtures</subject><subject>Immunoglobulins</subject><subject>Ions</subject><subject>Materials Science</subject><subject>Molecular Medicine</subject><subject>Multi wall carbon nanotubes</subject><subject>Nano Express</subject><subject>Nanochemistry</subject><subject>Nanoscale Science and Technology</subject><subject>Nanotechnology</subject><subject>Nanotechnology and Microengineering</subject><subject>Nanotubes</subject><subject>Oxygen</subject><subject>Photoelectron spectroscopy</subject><subject>Photoelectrons</subject><subject>Raman spectroscopy</subject><subject>Scanning electron microscopy</subject><subject>Spectroscopy</subject><subject>Spectrum analysis</subject><subject>Thermogravimetric analysis</subject><subject>X ray photoelectron 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Surface Modification of Multi-Walled Carbon Nanotubes by Cation Treatment</atitle><jtitle>Nanoscale research letters</jtitle><stitle>Nanoscale Res Lett</stitle><addtitle>Nanoscale Res Lett</addtitle><date>2008-12-16</date><risdate>2008</risdate><volume>4</volume><issue>3</issue><spage>234</spage><epage>239</epage><pages>234-239</pages><artnum>234</artnum><issn>1931-7573</issn><issn>1556-276X</issn><eissn>1556-276X</eissn><abstract>High incident energy hydrogen and/or oxygen cations are generated by electron cyclotron resonance system, and then used to highly efficiently modify multi-walled carbon nanotubes (MWCNTs). The effects of various H₂/O₂ gas compositions on the modification process are studied. A systematic characterization method utilizing a combination of X-ray photoelectron spectroscopy (XPS), scanning electron microscopy, Raman spectroscopy, and thermogravimetric analysis (TGA) is used to evaluate the effects of various H₂/O₂ gas compositions on MWCNT functionalization. The Raman results show that the I D/I G ratio is directly affected by H₂ concentration in gas mixture, and the treatment applying a H₂/O₂ gas mixture with ratio of 40/10 (sccm/sccm) can yield the nanotubes with the highest I D/I G ratio (1.27). The XPS results suggest that the gas mixture with ratio of 25/25 (sccm/sccm) is most effective in introducing oxygen-containing functional groups and reducing amorphous carbon. The TGA suggests that the structural change of the treated nanotubes is marginal by this method with any gas condition.</abstract><cop>New York</cop><pub>New York : Springer-Verlag</pub><pmid>20596368</pmid><doi>10.1007/s11671-008-9231-4</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Carbon Cations Chemistry and Materials Science Cyclotron resonance Electron cyclotron resonance Functional groups Gas composition Gas mixtures Immunoglobulins Ions Materials Science Molecular Medicine Multi wall carbon nanotubes Nano Express Nanochemistry Nanoscale Science and Technology Nanotechnology Nanotechnology and Microengineering Nanotubes Oxygen Photoelectron spectroscopy Photoelectrons Raman spectroscopy Scanning electron microscopy Spectroscopy Spectrum analysis Thermogravimetric analysis X ray photoelectron spectroscopy |
| title | Effects of Gas Composition on Highly Efficient Surface Modification of Multi-Walled Carbon Nanotubes by Cation Treatment |
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