Nanosecond Pulsed Laser‐Heated Nanocrystals Inside a Metal‐Organic Framework Matrix

verfasst von

Max Niemeyer, Patrick Michael Bessel, Pascal Rusch, Rasmus Himstedt, Daniel Kranz, Hadir Mahmoud Abdelghaffar Moustafa Borg, Nadja-Carola Bigall, Dirk Dorfs

Abstract

Investigations on gold and gold-zinc oxide nanocrystals encapsulated in a matrix of a metal-organic framework (ZIF-8) upon plasmonic heating with nanosecond laser pulses are presented. Irradiation of Au@ZIF-8 composite particles leads to heating of the gold core and decomposition of surrounding matrix acting as temperature probe. Cavities inside the ZIF-8 matrix are found on TEM images after irradiation. Their size is determined dependent on laser energy density and the generated heat at the gold core after absorption of a laser pulse approximated. The surrounding of the gold cores can be heated up to ZIF-8 decomposition over a distance up to 60 nm. This represents a method to visualize heat transfer from the gold cores to the ZIF-8 matrix in three dimensions. Studies on ZIF-8 encapsulated Au@ZnO dot-rod particles give insight in heat transfer between the particle components and show the applicability of the method to different, more complex systems.

Organisationseinheit(en)

Institut für Physikalische Chemie und Elektrochemie
Hannover School for Nanotechnology

Typ

Artikel

Journal

CHEMNANOMAT

Band

8

ISSN

2199-692X

Publikationsdatum

08.06.2022

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Biomaterialien, Erneuerbare Energien, Nachhaltigkeit und Umwelt, Energieanlagenbau und Kraftwerkstechnik, Werkstoffchemie

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Elektronische Version(en)

https://doi.org/10.1002/cnma.202200169 (Zugang: Offen)