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