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Experimental Strategy and Mechanistic View to Boost the Photocatalytic Activity of Cs3Bi2Br9 Lead-Free Perovskite Derivative by g-C3N4 Composite Engineering |
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| Authors: | Lidia Romani Andrea Speltini Carlo Nazareno Dibenedetto Andrea Listorti Francesco Ambrosio Edoardo Mosconi Angelica Simbula Michele Saba Antonella Profumo Paolo Quadrelli Filippo De Angelis Lorenzo Malavasi |
| Affiliation: | 1. Department of Chemistry and INSTM, University of Pavia, Via Taramelli 16, Pavia, 27100 Italy;2. Department of Drug Sciences, University of Pavia, Via Taramelli 12, Pavia, 27100 Italy;3. Department of Chemistry, University of Bari “Aldo Moro”, via Orabona 4, Bari, 70126 Italy Istituto per i Processi Chimico Fisici del CNR (IPCF-CNR), c/o Dipartimento di Chimica, Università degli Studi di Bari “Aldo Moro”, via Orabona 4, Bari, 70126 Italy;4. Department of Chemistry, University of Bari “Aldo Moro”, via Orabona 4, Bari, 70126 Italy;5. Computational Laboratory for Hybrid/Organic Photovoltaics (CLHYO), Istituto CNR di Scienze e Tecnologie Chimiche “Giulio Natta” (CNR-SCITEC), Via Elce di Sotto 8, Perugia, 06123 Italy;6. Dipartimento di Fisica, Università di Cagliari, Monserrato, 09042 Italy;7. Computational Laboratory for Hybrid/Organic Photovoltaics (CLHYO), Istituto CNR di Scienze e Tecnologie Chimiche “Giulio Natta” (CNR-SCITEC), Via Elce di Sotto 8, Perugia, 06123 Italy Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, Perugia, 06123 Italy |
| Abstract: | The rational design of heterojunctions based on metal halide perovskites (MHPs) is an effective route to create novel photocatalysts to run relevant solar-driven reactions. In this work, an experimental and computational study on the synergic coupling between a lead-free Cs3Bi2Br9 perovskite derivative and g-C3N4 is presented. A relevant boost of the hydrogen photogeneration by more than one order of magnitude is recorded when going from pure g-C3N4 to the Cs3Bi2Br9/g-C3N4 system. Effective catalytic activity is also achieved in the degradation of the organic pollutant with methylene blue as a model molecule. Based upon complementary experimental outputs and advanced computational modeling, a rationale is provided to understand the heterojunction functionality as well as the trend of hydrogen production as a function of perovskite loading. This work adds further solid evidence for the possible application of MHPs in photocatalysis, which is emerging as an extremely appealing and promising field of application of these superior semiconductors. |
| Keywords: | computational modellings hydrogen photogenerations lead-free perovskites metal halide perovskites photocatalysts |