Hydration structure of magnesium ion at graphene interface
Abstract Aqueous solutions near interfaces exhibit altered properties, impacting ion selectivity, reaction pathways, and nucleation. This study investigates unsaturated MgCl2 and Mg(NO3)2 solutions at reduced graphene oxide interface using X-ray diffraction. The results demonstrate limited crystallization, with distinct interfacial crystal behaviors observed for Mg2+ in comparison to Ca2+. Molecular analysis reveals the mechanism that the stable hydration layer of Mg2+ blocks electron migration from graphene. These findings provide insights for preparing carbon-based nanomaterials for ion separation in brine.
Authors
- Yongquan Zhou (ORCID: https://orcid.org/0000-0001-6945-4922)
- Fayan Zhu (ORCID: https://orcid.org/0000-0001-9473-0386)
- Min Wang (ORCID: https://orcid.org/0000-0001-7336-2502)
- Yunxia Wang
- Xu Zhao (ORCID: https://orcid.org/0000-0002-7548-3022)
- Yifa Du
- Yanan Wu (ORCID: https://orcid.org/0000-0002-4531-923X)
- Guosheng Shi
Institutions
- Shanghai University (CN)
- Chinese Academy of Sciences (CN)
- China National Salt Industry Corporation (China) (CN)
- Shanghai Institute of Applied Physics (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Chemistry Letters
- Published
- 2025-03-07
- DOI
- https://doi.org/10.1093/chemle/upaf048
- Primary Topic
- Iron oxide chemistry and applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00