(Invited) Extending the Success of Halide Perovskites to Photoelectrochemical and Photocatalytic Solar Fuel Production
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-11-22 |
| Journal | ECS Meeting Abstracts |
| Authors | Salvador Eslava |
Abstract
Section titled āAbstractāTo address the pressing global energy demands with clean and sustainable methods, solar-powered photoelectrochemical and photocatalytic transformations of water and carbon dioxide present viable solutions. Achieving this requires the development of cost-effective photoelectrodes and photocatalysts capable of efficiently harnessing solar light and promoting charge transfer to drive water and carbon dioxide reactions. In this presentation, I will outline the advances my team has made in the field, focusing on novel halide perovskites like CsPbBr 3 , Cs 2 AgBiBr 3 , and Cs 3 Bi 2 Br 9 and bulk heterojunctions of organic semiconductors. These materials exhibit high solar light absorption and outstanding optoelectronic properties, making them excellent candidates for photoelectrochemical and photocatalytic uses. We have developed innovative approaches to enhance their stability in aqueous environments, such as encapsulating halide perovskites and organic bulk heterojunctions within carbon layers modified with Ni nanopyramids and NiFeOOH, a water-oxidation catalyst. This approach exploits different carbon allotropes, from mesoporous carbon to graphite, glassy carbon and boron-doped diamond, in order of chemical and mechanical stability. The use of layers and sheets of these carbon allotropes has led to the creation of photoanodes with low onset potentials and high photocurrents, efficiently translating excellent photocurrents and photovoltages from solar cells to photoelectrodes. For example, organic bulk heterojunction devices result in 25 mA/cm2 photocurrents in three-electrode systems and unassisted 5% solar to hydrogen in two-electrode systems Our approaches significantly extend the lifespan of photoanodes, maintaining for example a projected operation of months with CsPbBr 3 . In the field of photocatalysts, we have employed mechanochemical synthesis and antisolvent crystallization to create innovative composites like CsPbBr 3 /Cu-RGO, Cs 2 AgBiBr 3 /Cu-RGO, Cs 2 AgBiBr 3 /bismuthene, and Cs 3 Bi 2 Br 9 /RGO/g-C 3 N 4 , demonstrating efficient activity in converting CO 2 into CO and CH 4 . Through thorough material characterization, we have shed light on their structural and charge-transfer properties, laying a solid foundation for their ongoing development and practical application. Daboczi, M.; Eisner, F.; Luke, J.; Yuan, S.W.; Al Lawati, N.; MĆ¼ller, J.S.; Kim, J.S. Nelson, J.; Eslava, S. under review Zhu, Daboczi, Chen, Xuan, Liu and Eslava, Nat. Commun. 2024, 2791. Daboczi, M.; Cui, J.; Temerov, F.; Eslava, S. Adv. Mater . 2023, 2304350 Baghdadi, Y.; Temerov, F.; Cui, J. Daboczi, M.; Rattner, E.; Sena, M.S.; Eslava, S. Chem. Mate r. 2023, 35, 20, 8607 Sena, M.S.; Cui, J.; Baghdadi, Y.; Rattner, E.; Daboczi, M.; Lopes-Moriyama, A.L.; dos Santos, A.G.; Eslava, S. ACS Appl. Energy Mater. 2023, 6, 10193. Kumar, S.; Hassan, I.; Regue, M.; Gonzalez-Carrero, S.; Rattner, E.; Isaacs, M.A.; Eslava, S . J. Mater. Chem. A 2021, 9, 12179