AUTHOR=Pirabul Kritin , Pan Zheng-Ze , Nishihara Hirotomo 

TITLE=Structural control of nanoporous frameworks consisting of minimally stacked graphene walls

JOURNAL=Frontiers in Materials

VOLUME=10

YEAR=2024

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2023.1345592

DOI=10.3389/fmats.2023.1345592

ISSN=2296-8016

ABSTRACT=<p>This mini-review provides an in-depth analysis of the formation and post-processing of nanoporous graphene materials <italic>via</italic> methane chemical vapor deposition (CH<sub>4</sub>-CVD) using nanostructured metal oxide templates, including Al<sub>2</sub>O<sub>3</sub>, MgO, and SiO<sub>2</sub>. Initially, the formation of graphene sheets is discussed in terms of the role of CH<sub>4</sub>-CVD, the influence of templates, and the underlying mechanism for tailoring the structures of the graphene-based materials. Following this, the discussion extends to the post-graphene formation process. We focus on key steps, including template removal and graphene repair <italic>via</italic> zipping reactions at high temperatures. Additionally, we evaluate the conditions to prevent undesired structural transformations. The correlation between the structural features and transformations occurring during post-processing is also examined. The materials fabricated through these methods exhibit impressive properties of high porosity, minimal edge sites, superior oxidation resistance, and elasticity, positioning them as promising materials in various applications.</p>