用于高效全解水的BiFeO@COF Z型异质结构中的压电-光催化协同作用
Piezo-Photocatalytic Synergy in BiFeO @COF Z-Scheme Heterostructures for High-Efficiency Overall Water Splitting.
作者信息
Xu Mei-Ling, Lu Meng, Qin Guan-Ying, Wu Xiu-Mei, Yu Ting, Zhang Li-Na, Li Kui, Cheng Xin, Lan Ya-Qian
机构信息
School of Materials Science and Engineering, University of Jinan, Jinan, 250022, P. R. China.
Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan, 250022, P. R. China.
出版信息
Angew Chem Int Ed Engl. 2022 Nov 2;61(44):e202210700. doi: 10.1002/anie.202210700. Epub 2022 Oct 5.
Solar-driven overall water splitting is an ideal way to generate renewable energy while still challenging. For the first time, this work combined covalent organic frameworks (COFs) and piezoelectric material by covalent linkages to form Z-scheme core@shell heterostructure for overall water splitting. Benefiting from the synergistic effect between the polarized electric field and photo-generated charges, as well as the precise adjustment of shell thickness, the carrier separation and utilization efficiency is greatly improved. The optimal BiFeO @TpPa-1-COF photocatalyst revealed hydrogen (H ) and oxygen (O ) production rates of 1416.4 and 708.2 μmol h g under the excitation of ultrasonication coupled with light irradiation, which is the best performance among various piezo- and COF-based photocatalysts. This provides a new sight for the practical application of highly efficient photocatalytic overall water splitting.
太阳能驱动的全分解水是一种产生可再生能源的理想方式，但仍具有挑战性。这项工作首次通过共价键将共价有机框架（COF）与压电材料结合，形成用于全分解水的Z型核壳异质结构。受益于极化电场与光生电荷之间的协同效应以及壳层厚度的精确调节，载流子的分离和利用效率得到了极大提高。优化后的BiFeO@TpPa-1-COF光催化剂在超声耦合光照射激发下，析氢（H）和析氧（O）速率分别为1416.4和708.2 μmol h g，这是各种基于压电材料和COF的光催化剂中表现最佳的。这为高效光催化全分解水的实际应用提供了新的视角。
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