# Adsorption of Cs Ions in Hydroxy-Al Interlayered Clay Minerals and the Aging Mechanism

https://mdr.nims.go.jp/datasets/4fc6c445-e0de-4ed4-92a5-e484fc557c3f

## File

- [2026_Sakuma-et-al_Langmuir.pdf](https://mdr.nims.go.jp/filesets/80bcd4ec-4a14-4cb7-a16f-a86a6e113d7c/download) ([Detail](https://mdr.nims.go.jp/filesets/80bcd4ec-4a14-4cb7-a16f-a86a6e113d7c.md))

## Id

4fc6c445-e0de-4ed4-92a5-e484fc557c3f

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-03-04T23:48:56.855368Z

## Updated at

2026-03-05T07:30:12.186167Z

## Published at

2026-03-05T04:42:52.982920Z

## Doi



## First published url

https://doi.org/10.1021/acs.langmuir.5c05291

## Date published

2026-03-03

## Recorded date published

2026-3-3

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Adsorption of Cs Ions in Hydroxy-Al Interlayered Clay Minerals and the Aging
    Mechanism
  title_type: original
  lang: en

## Description

- description: 'A decrease in the desorption rate of Cs+ from natural sediment was
    observed with increasing Cs+ sorption time. This aging effect poses a serious
    issue as it hinders the removal of radioactive cesium ions from natural sediments.
    In this study, adsorption and desorption experiments and molecular simulations
    were conducted on artificially weathered hydroxy-Al-interlayered clay minerals
    to elucidate the mechanism underlying this aging effect. The proposed aging mechanism
    of Cs+ in hydroxy-Al-interlayered clay minerals involves two steps: (1) Cs+ penetrates
    the interlayer space, which is expanded by the presence of hydroxy-Al segments,
    and (2a) it gradually migrates into the collapsed zone or (2b) into the inner
    hydroxy-Al layers. The structure of the (2b) model can explain the presence of
    five-fold coordination of Al, and the stability of Cs+ in the hydroxy-Al sheets
    was evaluated using density functional theory calculations.'
  description_type: abstract
  lang: und

## Creator

- name: Hiroshi Sakuma
  role: author
  orcid: https://orcid.org/0000-0002-6522-0704
  organization: National Institute for Materials Science
- name: Kenji Tamura
  role: author
  orcid: https://orcid.org/0000-0001-6578-0923
  organization: National Institute for Materials Science
- name: Shigeru Suehara
  role: author
  orcid: https://orcid.org/0000-0001-7423-2830
  organization: National Institute for Materials Science
- name: Kenjiro Hashi
  role: author
  orcid: https://orcid.org/0000-0002-0320-4768
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: Cesium
  schema: not_defined
- subject: phlogopite
  schema: not_defined
- subject: vermiculite
  schema: not_defined
- subject: NMR
  schema: not_defined
- subject: molecular dynamics
  schema: not_defined
- subject: DFT
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2026-02-21

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: LANGMUIR
  issn: '15205827'
  volume: '42'
  issue: '8'
  start_page: 6081
  end_page: 6090

## Conference



## Related item



## Funding

- identifier: JP22K05204
  funder_name: Japan Society for the Promotion of Science
- identifier: JPMEERF20191006
  funder_name: Environmental Restoration and Conservation Agency

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 80bcd4ec-4a14-4cb7-a16f-a86a6e113d7c
  filename: 2026_Sakuma-et-al_Langmuir.pdf
  content_type: application/pdf
  size: 6137055
  md5: 3477a41521f97398e2a8a1c99ac7d938

## Thumbnail

fileset_id: 80bcd4ec-4a14-4cb7-a16f-a86a6e113d7c
filename: 2026_Sakuma-et-al_Langmuir.pdf