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나노물질 및 화학반응 연구단
나노물질 및 화학반응 연구단
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Nanohole-Structured and Palladium-Embedded 3D Porous Graphene for Ultrahigh Hydrogen Storage and CO Oxidation Multifunctionalities

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Title
Nanohole-Structured and Palladium-Embedded 3D Porous Graphene for Ultrahigh Hydrogen Storage and CO Oxidation Multifunctionalities
Author(s)
Kumar, R; Oh, JH; Kim, HJ; Jung, JH; Chan-Ho Jung; Hong, WG; Kim, HJ; Jeong-Young Park; Oh, IK
Publication Date
2015-07
Journal
ACS NANO, v.9, no.7, pp.7343 - 7351
Publisher
AMER CHEMICAL SOC
Abstract
Atomic-scale defects on carbon nanostructures have been considered as detrimental factors and critical problems to be eliminated in order to fully utilize their intrinsic material properties such as ultrahigh mechanical stiffness and electrical conductivity. However, defects that can be intentionally controlled through chemical and physical treatments are reasonably expected to bring benefits in various practical engineering applications such as desalination thin membranes, photochemical catalysts, and energy storage materials. Herein, we report a defect-engineered self-assembly procedure to produce a three-dimensionally nanohole-structured and palladium-embedded porous graphene hetero-nanostructure having ultrahigh hydrogen storage and CO oxidation multifunctionalities. Under multistep microwave reactions, agglomerated palladium nanoparticles having diameters of similar to 10 nm produce physical nanoholes in the basal-plane structure of graphene sheets, while much smaller palladium nanoparticles are readily impregnated inside graphene layers and bonded on graphene surfaces. The present results show that the defect-engineered hetero-nanostructure has a similar to 5.4 wt % hydrogen storage capacity under 7.5 MPa and CO oxidation catalytic activity at 190 degrees C The defect-laden graphene can be highly functionalized for multipurpose applications such as molecule absorption, electrochemical energy storage, and catalytic activity, resulting in a pathway to nanoengineering based on underlying atomic scale and physical defects
URI
https://pr.ibs.re.kr/handle/8788114/1981
ISSN
1936-0851
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
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