# Tunable slow photon effect and local surface plasmon in Ag-immobilized TiO<sub>2</sub> inverse opal films for enhancing pollutant photodegradation

https://mdr.nims.go.jp/datasets/a27b169b-4814-4324-9e22-f16571331784

## File

- [Draft AgTiO IO_Accepted manuscript.docx](https://mdr.nims.go.jp/filesets/25b043dd-eb36-46e3-ade2-b3b96f3d46c5/download) ([Detail](https://mdr.nims.go.jp/filesets/25b043dd-eb36-46e3-ade2-b3b96f3d46c5.md))

## Id

a27b169b-4814-4324-9e22-f16571331784

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-05T03:06:02.521797Z

## Updated at

2024-12-16T07:30:54.780909Z

## Published at

2024-12-16T07:30:54.845815Z

## Doi

https://doi.org/10.48505/nims.5158

## First published url

https://doi.org/10.1039/d4ma00807c

## Date published

2024-09-26

## Recorded date published

2024-10-28

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Tunable slow photon effect and local surface plasmon in Ag-immobilized TiO<sub>2</sub>
    inverse opal films for enhancing pollutant photodegradation
  title_type: original
  lang: en

## Description

- description: Plasmonic silver-decorated TiO2 inverse opal has shown an interesting
    potential for photocatalysis owing to its physically tunable optical absorbance,
    highly active area, and flexible fabrication. In this study, electrophoretic deposition
    was used as a key technique to overcome the disadvantages of traditional inverse
    opal (IO)-fabricating methods, resulting in high reproducibility, chemical stability,
    and periodic area. The use of IO structural engineering, beneficially delocalizing
    and enhancing absorbed visible light, accounted for 46% of the total solar light,
    leading to the enhancement of the localized surface plasmonic resonance (LSPR)
    hot electrons of Ag NPs and an enhanced local electromagnetic (EM) field for the
    formation of photogenerated electrons on TiO2. These enhancements in Ag-deposited
    TiO2 IO promoted the excellent photocatalytic kinetic constant of methylene blue
    degradation around 17 × 10−3 min−1, responding to tunable optical absorption at
    the stopband edge of TiO2 IO containing 288-nm sized pores and low absorbance
    of Ag in the overlapped band. The explanation for the enhanced photocatalytic
    mechanism was studied based on high Ag deposition density, decrease in photocurrent,
    increase in electron lifetime in electrolytes, and the contribution of a slow
    photon effect to these characteristics. The proposed photocatalysis mechanism
    concerned the enhancement of EM-generated electrons on TiO2 that immigrate to
    the Ag surface for photoreduction while photooxidation occurred at the TiO2 surface
    by the holes. This study provides an interesting strategy to improve the photocatalysis
    of semiconductor–metal composite systems.
  description_type: abstract
  lang: und

## Creator

- name: Thi Kim Ngan Nguyen
  role: author
  orcid: https://orcid.org/0000-0001-8935-1306
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Fabien Grasset
  role: author
- name: Satoshi Ishii
  role: author
  orcid: https://orcid.org/0000-0003-0731-8428
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Hiroshi Fudouzi
  role: author
  orcid: https://orcid.org/0000-0003-1442-4667
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Tetsuo Uchikoshi
  role: author
  orcid: https://orcid.org/0000-0003-3847-4781
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Royal Society of Chemistry (RSC)

## Managing organization



## Keyword

- subject: inverse opal photonic crystal
  schema: not_defined
- subject: photocatalytic activity
  schema: not_defined
- subject: silver-decorated TiO2
  schema: not_defined
- subject: electrophoretic deposition
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Materials Advances
  issn: '26335409'
  volume: '5'
  issue: '21'
  start_page: 8615
  end_page: 8628

## Conference



## Related item



## Funding

- identifier: JPMXP1224NM5061
  funder_name: Ministry of Education, Culture, Sports, Science and Technology

## 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: 25b043dd-eb36-46e3-ade2-b3b96f3d46c5
  filename: Draft AgTiO IO_Accepted manuscript.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 3415002
  md5: d503cbd7642f7b20399ccb6d3ffd4f05

## Thumbnail

fileset_id: 25b043dd-eb36-46e3-ade2-b3b96f3d46c5
filename: Draft AgTiO IO_Accepted manuscript.docx