Phul Ruby, Jia Guobin, Utku Sekercileroglu Emir, Carstensen Yves, De Ratnadip, Dellith Andrea, Dellith Jan, Plentz Jonathan, Karadaş Ferdi, Dietzek-Ivanšić Benjamin
Department of Chemistry, Science Faculty, Bilkent University, Main Campus, Bilkent, Çankaya, Ankara, 06800, Türkiye.
Leibniz Institute of Photonic Technology (Leibniz-IPHT), Albert-Einstein-Str. 9, 07745, Jena, Germany.
Chemphyschem. 2025 Mar 15;26(6):e202400817. doi: 10.1002/cphc.202400817. Epub 2025 Jan 29.
The design and development of particulate photocatalysts have been an attractive strategy to incorporate earth-abundant metal ions to water splitting devices. Herein, we synthesized CoFe-Prussian blue (PB) coated ZnO origami core-shell nanostructures (PB@ZnO) with different massratios of PB components and investigated their photocatalytic water oxidation activities in the presence of an electron scavenger. Photocatalytic experiments reveal that the integration of PB on ZnO boosts the oxygen evolution rate by a factor of ~2.4 compared to bare ZnO origami. We ascribe this increased photocatalytic rate to an improved charge carrier separation and transfer due to the formation of heterojunction at the interface between PB and ZnO. Long-term photocatalytic experiments indicate that the activity and stability of the catalyst was preserved up to 9 h. Our results indicate that the core-shell PB@ZnO particles possess a proper band energy alignment for the photocatalytic water oxidation process.
设计和开发颗粒状光催化剂一直是一种将储量丰富的金属离子引入水分解装置的有吸引力的策略。在此，我们合成了具有不同PB组分质量比的CoFe-普鲁士蓝（PB）包覆的ZnO折纸核壳纳米结构（PB@ZnO），并研究了它们在电子清除剂存在下的光催化水氧化活性。光催化实验表明，与裸露的ZnO折纸相比，PB在ZnO上的整合使析氧速率提高了约2.4倍。我们将这种光催化速率的提高归因于PB和ZnO界面处形成异质结，从而改善了电荷载流子的分离和转移。长期光催化实验表明，催化剂的活性和稳定性在长达9小时内得以保持。我们的结果表明，核壳PB@ZnO颗粒在光催化水氧化过程中具有合适的能带能量排列。
