Liu Yisheng, Lv Xinpeng, Zhong Yong, Wang Gaoyang, Liu Shuanghong, Chen Sudi, Qi Cai, He Mu, Shangguan Ping, Luo Zhengqun, Li Xi, Guo Jincheng, Sun Jiajie, Bai Feng, Wang Jiefei
Academy for Advanced Interdisciplinary Studies, Henan Key Laboratory of Brain Targeted Bio-Nanomedicine, School of Life Sciences, Henan University, Kaifeng 475004, China.
Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Nanoscience and Materials Engineering, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China.
Molecules. 2024 Aug 15;29(16):3872. doi: 10.3390/molecules29163872.
Photoactive artificial nanocatalysts that mimic natural photoenergy systems can yield clean and renewable energy. However, their poor photoabsorption capability and disfavored photogenic electron-hole recombination hinder their production. Herein, we designed two nanocatalysts with various microstructures by combining the tailored self-assembly of the meso-tetra(p-hydroxyphenyl) porphine photosensitizer with the growth of titanium dioxide (TiO). The porphyrin photoabsorption antenna efficiently extended the absorption range of TiO in the visible region, while anatase TiO promoted the efficient electron-hole separation of porphyrin. The photo-induced electrons were transferred to the surface of the Pt co-catalyst for the generation of hydrogen via water splitting, and the hole was utilized for the decomposition of methyl orange dye. The hybrid structure showed greatly increased photocatalytic performance compared to the core@shell structure due to massive active sites and increased photo-generated electron output. This controlled assembly regulation provides a new approach for the fabrication of advanced, structure-dependent photocatalysts.
模仿自然光能系统的光活性人工纳米催化剂能够产生清洁的可再生能源。然而，其较差的光吸收能力以及不利的光生电子 - 空穴复合阻碍了它们的生产。在此，我们通过将中 - 四（对羟基苯基）卟啉光敏剂的定制自组装与二氧化钛（TiO₂）的生长相结合，设计了两种具有不同微观结构的纳米催化剂。卟啉光吸收天线有效地扩展了TiO₂在可见光区域的吸收范围，而锐钛矿型TiO₂促进了卟啉的有效电子 - 空穴分离。光生电子转移到Pt助催化剂表面以通过水分解产生氢气，空穴则用于分解甲基橙染料。与核壳结构相比，这种杂化结构由于大量的活性位点和增加的光生电子输出而表现出大大提高的光催化性能。这种可控的组装调控为制备先进的、结构依赖型光催化剂提供了一种新方法。
