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dc.contributor.author고민재-
dc.date.accessioned2021-02-16T02:06:34Z-
dc.date.available2021-02-16T02:06:34Z-
dc.date.issued2019-12-
dc.identifier.citationJOURNAL OF COLLOID AND INTERFACE SCIENCE, v. 557, page. 174-184en_US
dc.identifier.issn0021-9797-
dc.identifier.issn1095-7103-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0021979719310598?via%3Dihub-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/158288-
dc.description.abstractNitrogen-doped graphene quantum dots (NGQDs) are a diverse organic catalyst, competitive with other metallic catalysts due to their low cost, high stability, biocompatibility, and eco-friendliness. Highly functional multi-edge surfaces of NGQDs play a key role in imparting superb photocatalytic and electrocatalytic activity. However, when coating NGQDs by conventional techniques, such surfaces are not exposed for catalysis, due to the unwanted overlap of NGQDs sheets. To avoid this issue, here we propose a facile technique to orient NGQDs in a three-dimensional (3D) self-assembled foam-like structure, over reduced graphene oxide coated woven carbon fabric. This 3D assembled structure provides highly exposed active surfaces, which are readily available for catalytic reactions: however, in the conventional uniformly coated NGQDs layer, catalytic activity was limited by complex diffusion. The superb catalytic activity of the assembled NGQDs was utilized for the degradation of organic pollutant (methylene blue dye) from water. Additionally, the proposed electrode revealed much higher electrocatalytic activity than the rare Pt catalyst, owing to the easy diffusion of electrolyte and fast quenching of charges through the porous structure. The assembled NGQDs showed 50% higher photocatalytic degradation compared to uniformly coated NGQDs, which was further accelerated (50%) by application of the biased potential of 2 V; i.e. photo-electrocatalysis. The novel photo-electrocatalytic electrode offers high conductivity, stability, and flexibility, which make this complete carbon electrode highly attractive for other catalytic applications such as fuel cells, supercapacitors, and water splitting. (C) 2019 Published by Elsevier Inc.en_US
dc.description.sponsorshipThis work was supported by the Frontier R&D Program on Center for Multiscale Energy System Research (No. 2012M3A6A7054856), Technology Development Program to Solve Climate Change (2017M1A2A2087353), and Research Program (2018R1A2B2006708) funded by the National Research Foundation under the Ministry of Science and ICT, Republic of Korea. This work is also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea (No. 20173010013200 and No. 2018201010636A).en_US
dc.language.isoenen_US
dc.publisherACADEMIC PRESS INC ELSEVIER SCIENCEen_US
dc.subjectThree-dimensional self-assemblyen_US
dc.subjectNitrogen-doped graphene quantum dotsen_US
dc.subjectReduced graphene oxideen_US
dc.subjectStable electrodeen_US
dc.subjectPhoto-electrocatalysisen_US
dc.titleHighly porous self-assembly of nitrogen-doped graphene quantum dots over reduced graphene sheets for photo-electrocatalytic electrodeen_US
dc.typeArticleen_US
dc.relation.volume557-
dc.identifier.doi10.1016/j.jcis.2019.09.028-
dc.relation.page174-184-
dc.relation.journalJOURNAL OF COLLOID AND INTERFACE SCIENCE-
dc.contributor.googleauthorRiaz, Rabia-
dc.contributor.googleauthorAli, Mumtaz-
dc.contributor.googleauthorAnwer, Hassan-
dc.contributor.googleauthorKo, Min Jae-
dc.contributor.googleauthorJeong, Sung Hoon-
dc.relation.code2019002479-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF CHEMICAL ENGINEERING-
dc.identifier.pidmjko-
dc.identifier.researcherIDAAC-4459-2020-
dc.identifier.orcidhttps://orcid.org/0000-0002-4842-3235-
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COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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