Template dissolution with NaOH-HCl in the synthesis of zeolite-templated carbons: Effects on oxygen functionalization and electrical energy storage characteristics

Cited 4 time in webofscience Cited 0 time in scopus
  • Hit : 133
  • Download : 0
DC FieldValueLanguage
dc.contributor.authorPark, Hongjunko
dc.contributor.authorTerhorst, Steven K.ko
dc.contributor.authorBera, Raj Kumarko
dc.contributor.authorRyoo, Ryongko
dc.date.accessioned2019-11-04T05:20:11Z-
dc.date.available2019-11-04T05:20:11Z-
dc.date.created2019-11-04-
dc.date.created2019-11-04-
dc.date.created2019-11-04-
dc.date.issued2019-12-
dc.identifier.citationCARBON, v.155, pp.570 - 579-
dc.identifier.issn0008-6223-
dc.identifier.urihttp://hdl.handle.net/10203/268188-
dc.description.abstractZeolite-templated synthesis is a versatile route to ordered microporous carbons built with single-walled sp(2) framework of various structures, but the use of hazardous HF to dissolve the zeolite template is still a critical safety issue. We investigated the template-removal process using NaOH and HCl, which are safer than HF. The results indicated that the residual ash content in the carbon could be lowered to less than 5 wt% when the template was removed by consecutive treatments using NaOH and HCl in a proper sequence depending on the zeolite framework type. The carbon obtained in this manner exhibited a rather increased supercapacitance in aqueous media at high current density, as compared to carbons from HF-washing. In the case of the non-aqueous supercapacitor, however, the washing with NaOH-HCl resulted in low capacitance. This was due to the effect of NaOH to generate oxygen-functional groups, which could lead to an increase in the hydrophilicity, and a decrease in the electrical conductivity. Furthermore, the oxygen-functional groups could serve as a base to graft organic amines. When the carbon was heated in H-2, the oxygen content decreased to a similar level to that of the HF-washed carbon, restoring the conductivity and electrochemical energy storage characteristics. (C) 2019 Elsevier Ltd. All rights reserved.-
dc.languageEnglish-
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD-
dc.titleTemplate dissolution with NaOH-HCl in the synthesis of zeolite-templated carbons: Effects on oxygen functionalization and electrical energy storage characteristics-
dc.typeArticle-
dc.identifier.wosid000491864400066-
dc.identifier.scopusid2-s2.0-85072189691-
dc.type.rimsART-
dc.citation.volume155-
dc.citation.beginningpage570-
dc.citation.endingpage579-
dc.citation.publicationnameCARBON-
dc.identifier.doi10.1016/j.carbon.2019.09.020-
dc.contributor.localauthorRyoo, Ryong-
dc.contributor.nonIdAuthorTerhorst, Steven K.-
dc.contributor.nonIdAuthorBera, Raj Kumar-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordPlusDOUBLE-LAYER CAPACITANCE-
dc.subject.keywordPlusMICROPOROUS CARBON-
dc.subject.keywordPlusNANOPOROUS CARBON-
dc.subject.keywordPlusACTIVATED CARBONS-
dc.subject.keywordPlusPOROUS CARBON-
dc.subject.keywordPlusGRAPHENE-
dc.subject.keywordPlusOXIDATION-
dc.subject.keywordPlusDEALUMINATION-
dc.subject.keywordPlusCARBONIZATION-
dc.subject.keywordPlusDESILICATION-
Appears in Collection
CH-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 4 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0