eprintid: 10192154 rev_number: 7 eprint_status: archive userid: 699 dir: disk0/10/19/21/54 datestamp: 2024-05-13 15:20:37 lastmod: 2024-05-13 15:20:37 status_changed: 2024-05-13 15:20:37 type: article metadata_visibility: show sword_depositor: 699 creators_name: Pirabul, Kritin creators_name: Zhao, Qi creators_name: Sunahiro, Shogo creators_name: Pan, Zheng-Ze creators_name: Yoshii, Takeharu creators_name: Hayasaka, Yuichiro creators_name: Hoi-Sing Pang, Eddie creators_name: Crespo-Otero, Rachel creators_name: Di Tommaso, Devis creators_name: Kyotani, Takashi creators_name: Nishihara, Hirotomo title: A thermodynamically favorable route to the synthesis of nanoporous graphene templated on CaO via chemical vapor deposition ispublished: pub divisions: UCL divisions: B04 divisions: C06 divisions: F56 note: This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. abstract: Template-assisted chemical vapor deposition (CVD) is a promising approach for fabricating nanoporous materials based on graphene walls. Among conventional metal oxide templates, CaO, produced through the thermal decomposition of CaCO3, offers improved environmental sustainability and lower production costs, thereby potentially making it a viable candidate for green template materials. Nevertheless, the underlying reaction mechanisms of the interaction on the CaO surface during the CVD process remain indeterminate, giving rise to challenges in regulating graphene formation and obtaining high-quality materials. In this work, a comprehensive experimental-theoretical investigation has unveiled the CVD mechanism on CaO. CaO exhibits efficient catalytic activity in the dissociation of CH4, thereby facilitating a thermodynamically favorable conversion of CH4 to graphene. These findings highlight the potential of using CaO as a substrate for graphene growth, combining both sustainability and cost-effectiveness. When the shell-like graphene layer deposited on CaO particles is released through the dissolution of CaO with HCl, the resulting nanoporous graphene-based materials can be readily compacted by the capillary force of the liquid upon drying. The folded surfaces, however, can become available for electric double-layer capacitance via electrochemical exfoliation under a low applied potential (<1.2 V vs. Ag/AgClO4). date: 2024-04-11 date_type: published publisher: ROYAL SOC CHEMISTRY official_url: https://doi.org/10.1039/D4GC00116H oa_status: green full_text_type: pub language: eng primo: open primo_central: open_green article_type_text: / verified: verified_manual elements_id: 2273990 doi: 10.1039/d4gc00116h lyricists_name: Crespo Otero, Rachel lyricists_id: RCRES48 actors_name: Flynn, Bernadette actors_id: BFFLY94 actors_role: owner funding_acknowledgements: 23H00227 [Japan Society for the Promotion of Science]; JPMJSC2112 [JSPS KAKENHI]; IEC\R3\193106 [JST SICORP]; [UK's Royal Society International Exchanges Cost Share]; [Shiraishi Kogyo Kaisha, Ltd]; EP/P020194/1 [China Scholarship Council]; EP/L000202 [UK Materials and Molecular Modelling Hub - EPSRC]; [EPSRC]; [QMUL Research-IT] full_text_status: public publication: Green Chemistry pages: 12 issn: 1463-9262 citation: Pirabul, Kritin; Zhao, Qi; Sunahiro, Shogo; Pan, Zheng-Ze; Yoshii, Takeharu; Hayasaka, Yuichiro; Hoi-Sing Pang, Eddie; ... Nishihara, Hirotomo; + view all <#> Pirabul, Kritin; Zhao, Qi; Sunahiro, Shogo; Pan, Zheng-Ze; Yoshii, Takeharu; Hayasaka, Yuichiro; Hoi-Sing Pang, Eddie; Crespo-Otero, Rachel; Di Tommaso, Devis; Kyotani, Takashi; Nishihara, Hirotomo; - view fewer <#> (2024) A thermodynamically favorable route to the synthesis of nanoporous graphene templated on CaO via chemical vapor deposition. Green Chemistry 10.1039/d4gc00116h <https://doi.org/10.1039/d4gc00116h>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10192154/1/d4gc00116h.pdf