Air- and Water-stable and Photocatalytically Active Germanium-based 2D Perovskites by Organic Spacer Engineering

Overview

Journal Cell Rep Phys Sci

Publisher Cell Press

Date 2023 Jun 9

PMID 37292086

Authors

Lidia Romani

Andrea Speltini

Rossella Chiara

Marta Morana

Clarissa Coccia

Costanza Tedesco

Vincenza Armenise

Silvia Colella

Antonella Milella

Andrea Listorti

Antonella Profumo

Francesco Ambrosio

Edoardo Mosconi

Riccardo Pau

Federico Pitzalis

Angelica Simbula

Damiano Ricciarelli

Michele Saba

Maria Medina-Llamas

Filippo De Angelis

Lorenzo Malavasi

Affiliations

Soon will be listed here.

Abstract

There is increasing interest in the role of metal halide perovskites for heterogeneous catalysis. Here, we report a Ge-based 2D perovskite material that shows intrinsic water stability realized through organic cation engineering. Incorporating 4-phenylbenzilammonium (PhBz) we demonstrate, by means of extended experimental and computational results, that PhBzGeBr and PhBzGeI can achieve relevant air and water stability. The creation of composites embedding graphitic carbon nitride (g-CN) allows a proof of concept for light-induced hydrogen evolution in an aqueous environment by 2D Ge-based perovskites thanks to the effective charge transfer at the heterojunction between the two semiconductors.

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