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Title
Japanese: 
English:Surface Defect Healing in Annealing from Nanoporous Carbons to Nanoporous Graphenes 
Author
Japanese: 山崎 馨, 後藤駿輔, 吉野 隼矢, グバレビッチアンナ, 吉田克己, 加藤英樹, 山本雅納.  
English: Kaoru Yamazaki, Shunsuke Goto, Shunya Yoshino, Anna Gubarevich, Katsumi Yoshida, Hideki Kato, Masanori Yamamoto.  
Language English 
Journal/Book name
Japanese: 
English:Physical Chemistry Chemical Physics 
Volume, Number, Page 25        32972‒32978
Published date Nov. 16, 2023 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
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DOI https://doi.org/10.1039/D3CP04921C
Abstract Nanoporous graphene (NPG) materials have the pronounced electrochemical stability of the seamless graphene structures developed over the 3D space. We revisited the Raman spectra of nanoporous carbons (NPCs) synthesized using θ-/γ-Al2O3 templates and NPGs converted from NPCs by annealing at 1800 ºC to identify the type and density of defects. We found that both the NPCs and NPGs mostly consist of single-layered graphene with a few single vacancies and Stone‒Wales defects. The density of vacancy defect per hexagon in the graphene sheet is estimated to be 10^‒2 for NPCs, while the annealing reduced the value to 10^‒3‒10^-4 for NPGs. This supports the outstanding chemical and electrochemical stability of the novel porous carbon materials

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