Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang, 110036, China.
School of Materials Science and Engineering, Nankai University, Tianjin, 300353, China.
Angew Chem Int Ed Engl. 2018 Mar 12;57(12):3222-3227. doi: 10.1002/anie.201712925. Epub 2018 Feb 22.
Photocatalytic hydrogen production is crucial for solar-to-chemical conversion process, wherein high-efficiency photocatalysts lie in the heart of this area. A photocatalyst of hierarchically mesoporous titanium phosphonate based metal-organic frameworks, featuring well-structured spheres, a periodic mesostructure, and large secondary mesoporosity, are rationally designed with the complex of polyelectrolyte and cathodic surfactant serving as the template. The well-structured hierarchical porosity and homogeneously incorporated phosphonate groups can favor the mass transfer and strong optical absorption during the photocatalytic reactions. Correspondingly, the titanium phosphonates exhibit significantly improved photocatalytic hydrogen evolution rate along with impressive stability. This work can provide more insights into designing advanced photocatalysts for energy conversion and render a tunable platform in photoelectrochemistry.
光催化制氢对于太阳能转化为化学能的过程至关重要，而高效的光催化剂则是该领域的核心。本文设计了一种具有规整球形结构、周期性介孔结构和大的二次介孔的层状介孔钛磷酸金属有机骨架光催化剂，采用聚电解质和阴极表面活性剂的复合物作为模板。规整的层状多孔结构和均匀掺入的磷酸根基团有利于光催化反应过程中的传质和强光学吸收。相应地，钛磷酸化合物表现出显著提高的光催化析氢速率和令人印象深刻的稳定性。这项工作可以为设计用于能量转换的先进光催化剂提供更多的见解，并为光电化学提供一个可调谐的平台。
