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Article: Dual-porosity carbon templated from monosize mesoporous silica nanoparticles

TitleDual-porosity carbon templated from monosize mesoporous silica nanoparticles
Authors
Issue Date2007
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/cm
Citation
Chemistry Of Materials, 2007, v. 19 n. 11, p. 2786-2795 How to Cite?
AbstractA mesoporous carbon structure was template-synthesized from small nanoparticles of silica with internal M41S type mesopores. The silica template was synthesized according to Suzuki et al. using an ionic surfactant to create the internal mesopores 1.8-3.5 nm diameter and a nonionic surfactant to limit the overall size of the particle. Larger mesopores in the silica are needed for carbonization to a better structure. This was achieved by the use of a swelling agent, trimethylbenzene (TMB). Characterization by transmission electron microscopy (TEM), X-ray diffraction (XRD), and nitrogen sorption analysis showed a mesocellular foamlike carbon structure composed of porous cells with internal hexagonally arranged channels. In addition to the 3 nm internal channels, there were larger mesopores connecting the cellular domains. These larger mesopores were formed in the interparticle voids created during carbonization. The dual porosity network structure had a high surface area (> 1000 m 2/g) and large pore volume (> 1.2 mL/g). When loaded with Pt-Ru nanoparticles, the PtRu/carbon became a good electrocatalyst and gave the highest activity for methanol oxidation among several PtRu electrocatalysts including commercial electrocatalysts. © 2007 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/70217
ISSN
2015 Impact Factor: 9.407
2015 SCImago Journal Rankings: 4.232
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorRen, Jen_HK
dc.contributor.authorDing, Jen_HK
dc.contributor.authorChan, KYen_HK
dc.contributor.authorWang, Hen_HK
dc.date.accessioned2010-09-06T06:20:49Z-
dc.date.available2010-09-06T06:20:49Z-
dc.date.issued2007en_HK
dc.identifier.citationChemistry Of Materials, 2007, v. 19 n. 11, p. 2786-2795en_HK
dc.identifier.issn0897-4756en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70217-
dc.description.abstractA mesoporous carbon structure was template-synthesized from small nanoparticles of silica with internal M41S type mesopores. The silica template was synthesized according to Suzuki et al. using an ionic surfactant to create the internal mesopores 1.8-3.5 nm diameter and a nonionic surfactant to limit the overall size of the particle. Larger mesopores in the silica are needed for carbonization to a better structure. This was achieved by the use of a swelling agent, trimethylbenzene (TMB). Characterization by transmission electron microscopy (TEM), X-ray diffraction (XRD), and nitrogen sorption analysis showed a mesocellular foamlike carbon structure composed of porous cells with internal hexagonally arranged channels. In addition to the 3 nm internal channels, there were larger mesopores connecting the cellular domains. These larger mesopores were formed in the interparticle voids created during carbonization. The dual porosity network structure had a high surface area (> 1000 m 2/g) and large pore volume (> 1.2 mL/g). When loaded with Pt-Ru nanoparticles, the PtRu/carbon became a good electrocatalyst and gave the highest activity for methanol oxidation among several PtRu electrocatalysts including commercial electrocatalysts. © 2007 American Chemical Society.en_HK
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/cmen_HK
dc.relation.ispartofChemistry of Materialsen_HK
dc.titleDual-porosity carbon templated from monosize mesoporous silica nanoparticlesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0897-4756&volume=19&spage=2786&epage=2795&date=2007&atitle=Dual-Porosity+Carbon+Templated+from+Monosize+Mesoporous+Silica+Nanoparticles+en_HK
dc.identifier.emailChan, KY:hrsccky@hku.hken_HK
dc.identifier.authorityChan, KY=rp00662en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/cm0621545en_HK
dc.identifier.scopuseid_2-s2.0-34250191852en_HK
dc.identifier.hkuros136148en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34250191852&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume19en_HK
dc.identifier.issue11en_HK
dc.identifier.spage2786en_HK
dc.identifier.epage2795en_HK
dc.identifier.eissn1520-5002-
dc.identifier.isiWOS:000246645100017-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridRen, J=35254633000en_HK
dc.identifier.scopusauthoridDing, J=55244057600en_HK
dc.identifier.scopusauthoridChan, KY=7406034142en_HK
dc.identifier.scopusauthoridWang, H=8393378100en_HK

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