Issue 33, 2023

Achieving photostability in dye-sensitized upconverting nanoparticles and their use in Fenton type photocatalysis

Abstract

Dye sensitization is a promising approach to enhance the luminescence of lanthanide-doped upconverting nanoparticles. However, the poor photostability of near-infrared dyes hampers their use in practical applications. To address this, commercial IR820 was modified for improved photostability and covalently bonded to amine-functionalized silica-coated LnUCNPs. Two methods of covalent linking were investigated: linking the dye to the surface of the silica shell, and embedding the dye within the silica shell. The photostability of the dyes when embedded in the silica shell exhibited upconversion emissions from NaGdF4:Er3+,Yb3+/NaGdF4:Yb3+ nanoparticles for over four hours of continuous excitation with no change in intensity. To highlight this improvement, the photostable dye-embedded system was successfully utilized for Fenton-type photocatalysis, emphasizing its potential for practical applications. Overall, this study presents a facile strategy to circumvent the overlooked limitations associated with photodegradation, opening up new possibilities for the use of dye-sensitized lanthanide-doped upconverting nanoparticles in a range of fields.

Graphical abstract: Achieving photostability in dye-sensitized upconverting nanoparticles and their use in Fenton type photocatalysis

Supplementary files

Article information

Article type
Paper
Submitted
14 iyn 2023
Accepted
02 avq 2023
First published
03 avq 2023

Nanoscale, 2023,15, 13583-13594

Achieving photostability in dye-sensitized upconverting nanoparticles and their use in Fenton type photocatalysis

M. Kaur, S. L. Maurizio, G. A. Mandl and J. A. Capobianco, Nanoscale, 2023, 15, 13583 DOI: 10.1039/D3NR02845C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements