Contribution of pyrolytic gas medium to the fabrication of co-impregnated biochar
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cho, Dong-Wan | - |
dc.contributor.author | Kim, Sohyun | - |
dc.contributor.author | Tsang, Daniel C. W. | - |
dc.contributor.author | Bolan, Nanthi S. | - |
dc.contributor.author | Kim, Taejin | - |
dc.contributor.author | Kwon, Eilhann E. | - |
dc.contributor.author | Ok, Yong Sik | - |
dc.contributor.author | Song, Hocheol | - |
dc.date.accessioned | 2023-09-18T07:00:09Z | - |
dc.date.available | 2023-09-18T07:00:09Z | - |
dc.date.created | 2023-07-07 | - |
dc.date.issued | 2018-07 | - |
dc.identifier.issn | 2212-9820 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/190836 | - |
dc.description.abstract | Co-impregnated biochars were fabricated by pyrolysis of spent coffee grounds (SCG) or glucose as carbon (C) sources under N-2 and CO2. The formed biochar samples were characterized with FE-SEM, TEM/EDS, XRD, TGA, Raman, XPS, and BET, and further used as catalytic medium for the reduction of p-nitrophenol in the presence of NaBH4. The physicochemical characteristics of biochar significantly changed with the types of C precursor and flow gas stream. The biochar from pyrolysis of SCG under N-2 gas stream showed good dispersion of Co nanoparticles (10-20 nm) in carbon matrix as compared to that produced under CO2 stream, but BET surface area was very small (4.5 m(2) g(-1)) due to pore blockage by thermal degradation products. SCG-derived biochar formed in the presence of CO2 possessed highly porous structure due to CO2-assisted C volatilization. In contrast, for glucose-derived biochar, significant reduction in porosity of biochar occurred with excess devolatilization of C under CO2 conditions, while the pyrolysis under N-2 flow produced porous biochar. These contrasting results demonstrated the significance of structure crystallinity and thermal degradability of C precursors. The catalytic performance of biochar was better correlated with the external surface area rather than microporosity. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCI LTD | - |
dc.title | Contribution of pyrolytic gas medium to the fabrication of co-impregnated biochar | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kwon, Eilhann E. | - |
dc.contributor.affiliatedAuthor | Song, Hocheol | - |
dc.identifier.doi | 10.1016/j.jcou.2018.06.003 | - |
dc.identifier.scopusid | 2-s2.0-85048412386 | - |
dc.identifier.wosid | 000439069700049 | - |
dc.identifier.bibliographicCitation | Journal of CO2 Utilization, v.26, pp.476 - 486 | - |
dc.relation.isPartOf | Journal of CO2 Utilization | - |
dc.citation.title | Journal of CO2 Utilization | - |
dc.citation.volume | 26 | - |
dc.citation.startPage | 476 | - |
dc.citation.endPage | 486 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | NITROGEN-DOPED CARBON | - |
dc.subject.keywordPlus | SPENT COFFEE GROUNDS | - |
dc.subject.keywordPlus | OXYGEN REDUCTION | - |
dc.subject.keywordPlus | COBALT NANOPARTICLES | - |
dc.subject.keywordPlus | P-NITROPHENOL | - |
dc.subject.keywordPlus | EFFICIENT ELECTROCATALYSTS | - |
dc.subject.keywordPlus | HYDROGEN | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordAuthor | Biochar | - |
dc.subject.keywordAuthor | Cobalt | - |
dc.subject.keywordAuthor | Carbon dioxide | - |
dc.subject.keywordAuthor | Biomass | - |
dc.subject.keywordAuthor | Nitrophenol reduction | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S2212982018302920?via%3Dihub | - |
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