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dc.contributor.authorZhao, Cuijiao
dc.contributor.authorZhang, Shengbo
dc.contributor.authorSun, Na
dc.contributor.authorZhou, Hongjian
dc.contributor.authorWang, Guozhong
dc.contributor.authorZhang, Yunxia
dc.contributor.authorZhang, Haimin
dc.contributor.authorZhao, Huijun
dc.date.accessioned2019-10-14T02:40:18Z
dc.date.available2019-10-14T02:40:18Z
dc.date.issued2019
dc.identifier.issn2053-1400
dc.identifier.doi10.1039/c9ew00239a
dc.identifier.urihttp://hdl.handle.net/10072/388355
dc.description.abstractEggplant biomass was successfully converted into N, O-enriched hierarchical porous carbon materials as multifunctional electrodes for Zn–air battery-driven capacitive deionization via carbonization with potassium bicarbonate activation under a nitrogen atmosphere. The as-prepared N, O-enriched hierarchical porous carbon (NPC) electrode has a high N doping content (2.67 at%), oxygen-enriched chemical structure (surface oxygen content: 21.34 at%), hierarchical pore distribution (interconnected micro–meso–macropore system), high pore volume (0.72 cm3 g−1), and large specific surface area (1226 m2 g−1) as well as superior electroconductibility, which is advantageous for valid electrolyte approachability and rapid ion transmission to enhance the electrosorption capacity of carbon electrodes. These characteristics provided great salt adsorption capacity (SAC, 31.9 mg g−1) and excellent charge efficiency (CF, 60.3%) for capacitive deionization. Meanwhile, the NPC displays bifunctional electrocatalytic activities for the oxygen reduction reaction and oxygen evolution reaction, capable of constructing a rechargeable Zn–air battery with an open circuit voltage of 1.32 V. As a prototype integrated system, an NPC-800 constructed Zn–air battery was employed to power an NPC-800 symmetrical CDI device (denoted as a self-powered CDI system), showing comparable SAC and CF in the DC power driving mode. Furthermore, the self-powered CDI system also shows high removal efficiency for harmful heavy metal ions from water (99.1% for Pb2+ and 97.9% for Cd2+).
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherRoyal Society of Chemistry
dc.relation.ispartofpagefrom1054
dc.relation.ispartofpageto1063
dc.relation.ispartofissue6
dc.relation.ispartofjournalEnvironmental Science: Water Research & Technology
dc.relation.ispartofvolume5
dc.subject.fieldofresearchOther Chemical Sciences
dc.subject.fieldofresearchCivil Engineering
dc.subject.fieldofresearchEnvironmental Engineering
dc.subject.fieldofresearchcode0399
dc.subject.fieldofresearchcode0905
dc.subject.fieldofresearchcode0907
dc.subject.keywordsScience & Technology
dc.subject.keywordsTechnology
dc.subject.keywordsLife Sciences & Biomedicine
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsEngineering, Environmental
dc.titleConverting eggplant biomass into multifunctional porous carbon electrodes for self-powered capacitive deionization
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationZhao, C; Zhang, S; Sun, N; Zhou, H; Wang, G; Zhang, Y; Zhang, H; Zhao, H, Converting eggplant biomass into multifunctional porous carbon electrodes for self-powered capacitive deionization, Environmental Science: Water Research & Technology, 2019, 5 (6), pp. 1054-1063
dc.date.updated2019-10-14T02:36:46Z
gro.hasfulltextNo Full Text
gro.griffith.authorZhao, Huijun
gro.griffith.authorZhang, Haimin


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