Continuous 3D Titanium Nitride Nanoshell Structure for Solar-Driven Unbiased Biocatalytic CO2 Reduction

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dc.contributor.authorKuk, Su Keunko
dc.contributor.authorHam, Youngjinko
dc.contributor.authorGopinath, Krishnasamyko
dc.contributor.authorBoonmongkolras, Passarutko
dc.contributor.authorLee, Youngjunko
dc.contributor.authorLee, Yang Wooko
dc.contributor.authorKondaveeti, Sanathko
dc.contributor.authorAhn, Changuiko
dc.contributor.authorShin, Byunghako
dc.contributor.authorLee, Jung-Kulko
dc.contributor.authorJeon, Seokwooko
dc.contributor.authorPark, Chan Beumko
dc.date.accessioned2019-08-22T05:20:13Z-
dc.date.available2019-08-22T05:20:13Z-
dc.date.created2019-08-19-
dc.date.created2019-08-19-
dc.date.created2019-08-19-
dc.date.issued2019-07-
dc.identifier.citationADVANCED ENERGY MATERIALS, v.9, no.25-
dc.identifier.issn1614-6832-
dc.identifier.urihttp://hdl.handle.net/10203/264896-
dc.description.abstractZ-scheme-inspired tandem photoelectrochemical (PEC) cells have received attention as a sustainable platform for solar-driven CO2 reduction. Here, continuously 3D-structured, electrically conductive titanium nitride nanoshells (3D TiN) for biocatalytic CO2-to-formate conversion in a bias-free tandem PEC system are reported. The 3D TiN exhibits a periodically porous network with high porosity (92.1%) and conductivity (6.72 x 10(4) S m(-1)), which allows for high enzyme loading and direct electron transfer (DET) to the immobilized enzyme. It is found that the W-containing formate dehydrogenase from Clostridium ljungdahlii (ClFDH) on the 3D TiN nanoshell is electrically activated through DET for CO2 reduction. At a low overpotential of 40 mV, the 3D TiN-ClFDH stably converts CO2 to formate at a rate of 0.34 mu mol h(-1) cm(-2) and a faradaic efficiency (FE) of 93.5%. Compared to a flat TiN-ClFDH, the 3D TiN-ClFDH shows a 58 times higher formate production rate (1.74 mu mol h(-1) cm(-2)) at 240 mV of overpotential. Lastly, a bias-free biocatalytic tandem PEC cell that converted CO2 to formate at an average rate of 0.78 mu mol h(-1) and an FE of 77.3% only using solar energy and water is successfully assembled.-
dc.languageEnglish-
dc.publisherWILEY-V C H VERLAG GMBH-
dc.titleContinuous 3D Titanium Nitride Nanoshell Structure for Solar-Driven Unbiased Biocatalytic CO2 Reduction-
dc.typeArticle-
dc.identifier.wosid000477778400009-
dc.identifier.scopusid2-s2.0-85066051727-
dc.type.rimsART-
dc.citation.volume9-
dc.citation.issue25-
dc.citation.publicationnameADVANCED ENERGY MATERIALS-
dc.identifier.doi10.1002/aenm.201900029-
dc.contributor.localauthorShin, Byungha-
dc.contributor.localauthorJeon, Seokwoo-
dc.contributor.localauthorPark, Chan Beum-
dc.contributor.nonIdAuthorGopinath, Krishnasamy-
dc.contributor.nonIdAuthorLee, Youngjun-
dc.contributor.nonIdAuthorKondaveeti, Sanath-
dc.contributor.nonIdAuthorAhn, Changui-
dc.contributor.nonIdAuthorLee, Jung-Kul-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorphotobiocatalysis-
dc.subject.keywordAuthorphotoelectrochemical cells-
dc.subject.keywordAuthorphotovoltaics-
dc.subject.keywordAuthorsolar CO2 reduction-
dc.subject.keywordAuthortitanium nitride-
dc.subject.keywordPlusSELECTIVE ELECTROCHEMICAL REDUCTION-
dc.subject.keywordPlusCARBON-DIOXIDE-
dc.subject.keywordPlusPHOTOELECTROCHEMICAL REDUCTION-
dc.subject.keywordPlusFORMATE-
dc.subject.keywordPlusPERFORMANCE-
dc.subject.keywordPlusLAYER-
dc.subject.keywordPlusPHOTOCATALYST-
dc.subject.keywordPlusELECTRODES-
dc.subject.keywordPlusEFFICIENCY-
dc.subject.keywordPlusCONVERSION-
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