Gonuguntla Spandana, Sk Saddam, Tripathi Anjana, Thapa Ranjit, Jonnalagadda Gopinath, Nayak Chandrani, Bhattacharyya Dibyendu, Jha S N, Sesha Sainath Annadanam V, Perupogu Vijayanand, Pal Ujjwal
Department of Energy & Environmental Engineering, CSIR-Indian Institute of Chemical Technology, Hyderabad-, 500007, India.
Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-, 201002, India.
Commun Chem. 2022 Dec 3;5(1):165. doi: 10.1038/s42004-022-00763-8.
Conjugated polymers and titanium-based metal-organic framework (Ti-MOF) photocatalysts have demonstrated promising features for visible-light-driven hydrogen production. We report herein a strategy of anisotropic phenanthroline-based ruthenium polymers (PPDARs) over Ti-MOF, a tunable platform for efficient visible-light-driven photocatalytic hydrogen evolution reaction (HER). Several analytical methods including X-ray absorption spectroscopy (XAS) revealed the judicious integration of the surface-active polymer over the Ti-MOF reinforcing the catalytic activity over the broad chemical space. PPDAR-4 polyacrylate achitecture led to a substantial increase in the H evolution rate of 2438 µmolgh (AQY: 5.33%) compared to pristine Ti-MOF (238 µmol g h). The separation of photogenerated charge carriers at the PPDAR-4/Ti-MOF interface was confirmed by the optical and electrochemical investigations. The experimental, as well as theoretical data, revealed their physical and chemical properties which are positively correlated with the H generation rate. This offers a new avenue in creating polymer-based MOF robust photocatalysts for sustainable energy.
共轭聚合物和钛基金属有机框架（Ti-MOF）光催化剂在可见光驱动的制氢方面已展现出有前景的特性。我们在此报告一种基于菲咯啉的钌聚合物（PPDARs）在Ti-MOF上的各向异性策略，Ti-MOF是一个用于高效可见光驱动光催化析氢反应（HER）的可调平台。包括X射线吸收光谱（XAS）在内的几种分析方法表明，表面活性聚合物在Ti-MOF上的明智整合增强了在广泛化学空间中的催化活性。与原始Ti-MOF（238 µmol g h）相比，PPDAR-4聚丙烯酸酯结构使析氢速率大幅提高至2438 µmol g h（AQY：5.33%）。通过光学和电化学研究证实了PPDAR-4/Ti-MOF界面处光生电荷载流子的分离。实验数据以及理论数据揭示了它们的物理和化学性质与产氢速率呈正相关。这为创建用于可持续能源的基于聚合物的MOF稳健光催化剂提供了一条新途径。
