2025-08-15 パシフィック・ノースウェスト国立研究所（PNNL）
＜関連情報＞
- https://www.pnnl.gov/publications/controlling-speciation-n-doped-carbon-materials
- https://pubs.rsc.org/en/content/articlelanding/2025/lf/d5lf00064e
N添加炭素材料の溶液合成におけるNの種分化制御 Controlling N speciation in solution synthesis of N-doped carbon materials
Mi Yeon Byun, Lili Liu, Daniel Mejía-Rodríguez, Eric D. Walter, Zihua Zhu, Niri Govind, Tom Autrey and Maria L. Sushko
RSC Applied Interfaces Published:11 Jun 2025
DOI:https://doi.org/10.1039/D5LF00064E
Abstract
Carbon-based materials, such as graphite and its functionalized/doped derivatives, are promising lightweight layered materials for hydrogen activation and storage. Their propensity to control the thermodynamics of hydrogen binding and the kinetics of hydrogen mobility strongly depends on the speciation and the arrangement of dopants. In this study, we demonstrate precise control over dopant speciation and clustering in nitrogen-containing layered carbon materials during hydrothermal synthesis. Through extensive spectroscopic characterization and first principles simulations, we demonstrate that the formation of N-motifs can be controlled by the choice of precursor and synthesis temperature. The distinct three-dimensional architecture and porosity in graphene oxide and carbon nitride-derived materials furnish a synthetic pathway for precise control over the local and global structure of nitrogen-doped carbon materials and their activity toward the activation of molecular hydrogen.
