# Crystallization of RE2(OH)2CO3SO4.nH2O as a new family of layered hydroxides (RE = Gd−Lu lanthanides and Y), derivation of RE2O2SO4, photoluminescence and optical thermometry

https://mdr.nims.go.jp/datasets/f3053af1-af7e-49bd-8210-b5f209138112

## Files

- [JORE.pdf](https://mdr.nims.go.jp/filesets/6f2d2a03-6d9c-4003-9fce-edfe112e26a2/download) ([Detail](https://mdr.nims.go.jp/filesets/6f2d2a03-6d9c-4003-9fce-edfe112e26a2.md))

## Id

f3053af1-af7e-49bd-8210-b5f209138112

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-07-25T06:38:24.910183Z

## Updated at

2025-07-12T23:30:21.026886Z

## Published at

2025-07-12T23:15:48.426935Z

## Doi

https://doi.org/10.48505/nims.4605

## First published url

https://doi.org/10.1016/j.jre.2023.07.008

## Date published

2023-07-13

## Recorded date published

2024-8

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Crystallization of RE2(OH)2CO3SO4.nH2O as a new family of layered hydroxides
    (RE = Gd−Lu lanthanides and Y), derivation of RE2O2SO4, photoluminescence and
    optical thermometry
  title_type: original
  lang: en

## Description

- description: 'Layered rare-earth hydroxides (LREHs) draw wide research interest
    because of their peculiar crystal structure, rich interlayer chemistry and abundant
    functionality of the RE element, but are limited to the two categories of RE2(OH)5A·nH2O
    (A: typical of Cl- or NO3-) and RE2(OH)4SO4·nH2O. On the other hand, RE2O2SO4
    attracted attention for large-capacity oxygen storage, low-temperature magnetism
    and luminescence, whose preparation mostly involves toxic SOx gases and/or complicated
    procedures. This study produced RE2(OH)2CO3SO4·nH2O as a new family of LREHs (RE
    = Gd-Lu lanthanides and Y) via hydrothermal reaction, from which phase-pure RE2O2SO4
    was derived via subsequent annealing at 800 °C in air without the involvement
    of SOx. The compounds were thoroughly characterized to reveal the intrinsic influence
    of lanthanide contraction (RE3+ radius) on crystal structure, thermal behavior
    (dehydroxylation/decarbonation/desulfurization), vibrational property and crystallite
    morphology. Analyzing the photoluminescence of Eu3+ and Sm3+ in the Gd2O2SO4 typical
    host found that the 617 nm (Eu3+, λex = 275 nm) and 608 nm (Sm3+, λex = 407 nm)
    main emissions can retain as high as ~79.6 and 85.5% of their room-temperature
    intensities at 423 K, with activation energies of ~0.19 and 0.21 eV for thermal
    quenching, respectively. Application also indicated that both the phosphors have
    the potential for optical temperature sensing via the fluorescence intensity ratio
    (FIR) technology, whose maximum relative sensitivity reached ~2.70% K−1 for Eu3+
    and 1.73% K−1 for Sm3+ at 298 K.'
  description_type: abstract
  lang: eng

## Creator

- name: Fan Li
  role: author
  organization: Northeastern University
- name: Zhenqi Song
  role: author
  organization: Northeastern University
- name: Zhiyuan Pan
  role: author
  organization: Northeastern University
- name: Sihan Feng
  role: author
  organization: Northeastern University
- name: Qi Zhu
  role: author
  organization: Northeastern University
- name: Ji-Guang Li
  role: author
  orcid: https://orcid.org/0000-0002-5625-7361
  organization: National Institute for Materials Science
  department: Research Center for Electronic and Optical Materials/Optical Materials
    Field/Polycrystalline Optical Material Group
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier

## Managing organization



## Keyword

- subject: Layered hydroxide
  schema: not_defined
- subject: RE2O2SO4
  schema: not_defined
- subject: " Luminescence"
  schema: not_defined
- subject: " Optical temperature sensing"
  schema: not_defined
- subject: " Rare earths"
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2023-07-13
end_date: 2025-07-13

## Journal

- title: JOURNAL OF RARE EARTHS
  issn: '10020721'
  volume: '42'
  issue: '8'
  start_page: 1496
  end_page: 1506

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## Specimen



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## Fileset

- id: 6f2d2a03-6d9c-4003-9fce-edfe112e26a2
  filename: JORE.pdf
  content_type: application/pdf
  size: 1889648
  md5: f4789a7e7a7fdb594d7be52cd8001277

## Thumbnail

fileset_id: 6f2d2a03-6d9c-4003-9fce-edfe112e26a2
filename: JORE.pdf