Kutorglo Edith Mawunya, Schwarze Michael, Nguyen Anh Dung, Tameu Simon Djoko, Huseyinova Shahana, Tasbihi Minoo, Görke Oliver, Primbs Matthias, Šoóš Miroslav, Schomäcker Reinhard
Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124, TC8 Berlin 10623 Germany
Bioengineering and Advanced Materials Laboratory, Department of Chemical Engineering, University of Chemistry and Technology Prague Prague 166 28 Czech Republic.
RSC Adv. 2023 Aug 10;13(34):24038-24052. doi: 10.1039/d3ra04049f. eCollection 2023 Aug 4.
The development of photocatalysts that can utilize the entire solar spectrum is crucial to achieving efficient solar energy conversion. The utility of the benchmark photocatalyst, TiO, is limited only to the UV region due to its large bandgap. Extending the light harvesting properties across the entire spectrum is paramount to enhancing solar photocatalytic performance. In this work, we developed low bandgap TiO/conjugated polymer nanostructures which exhibit full spectrum activity for efficient H production. The highly mesoporous structure of the nanostructures together with the photosensitizing properties of the conjugated polymer enabled efficient solar light activity. The mesoporous TiO nanostructures calcined at 550 °C exhibited a defect-free anatase crystalline phase with traces of brookite and high surface area, resulting in the best performance in hydrogen production (5.34 mmol g h) under sunlight simulation. This value is higher not only in comparison to other TiO-based catalysts but also to other semiconductor materials reported in the literature. Thus, this work provides an effective strategy for the construction of full spectrum active nanostructured catalysts for enhanced solar photocatalytic hydrogen production.
开发能够利用整个太阳光谱的光催化剂对于实现高效太阳能转换至关重要。基准光催化剂TiO由于其较大的带隙，其效用仅限于紫外区域。将光捕获特性扩展到整个光谱对于提高太阳能光催化性能至关重要。在这项工作中，我们开发了低带隙TiO/共轭聚合物纳米结构，其表现出用于高效产氢的全光谱活性。纳米结构的高度介孔结构与共轭聚合物的光敏特性实现了高效的太阳光活性。在550℃煅烧的介孔TiO纳米结构表现出无缺陷的锐钛矿晶相以及少量板钛矿和高表面积，从而在阳光模拟下产氢性能最佳（5.34 mmol g h）。该值不仅高于其他基于TiO的催化剂，也高于文献中报道的其他半导体材料。因此，这项工作为构建用于增强太阳能光催化产氢的全光谱活性纳米结构催化剂提供了一种有效策略。
