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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 PhBz2GeBr4 and PhBz2GeI4 can achieve relevant air and water stability. The creation of composites embedding graphitic carbon nitride (g-C3N4) 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.
Cell Press
Publication date: 
5 Jan 2023

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

Biblio References: 
Pages: 101214
Cell Reports Physical Science