Liao Yifan, Gu Huajun, Huang Yamei, Wang Xinglin, Meng Jiayi, Zhou Quanmei, Wei Yuchen, Dai Wei-Lin
Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, P. R. China.
Chem Asian J. 2025 May 15;20(10):e202401772. doi: 10.1002/asia.202401772. Epub 2025 Jan 24.
Traditional photocatalysts often have limited efficiency due to the high recombination rate of photogenerated electron-hole pairs. In this work, we synthesized 3D/2D ZnSe-MXene Schottky heterojunctions by an in situ electrostatic self-assembly method. Notably, the 3 % MXene-ZnSe composite exhibited an optimized photocatalytic hydrogen production rate of 765.0 μmol g h, about 1.6 times higher than that of pristine ZnSe. MXene's high conductivity and large surface area enhance catalytic performance by providing more active sites and efficient electron transfer pathways from ZnSe to MXene. This accelerates the separation and movement of photogenerated carriers, significantly reducing recombination. We have investigated the photocatalytic hydrogen production mechanism of the ZnSe-MXene composites using various characterization techniques. Our findings provide favourable insights into the synergistic effects within the heterojunction, offering valuable guidance for the design and development of advanced photocatalytic materials.
传统的光催化剂由于光生电子-空穴对的高复合率，其效率往往有限。在这项工作中，我们通过原位静电自组装方法合成了3D/2D ZnSe-MXene肖特基异质结。值得注意的是，3%的MXene-ZnSe复合材料表现出优化的光催化产氢速率，为765.0 μmol g⁻¹ h⁻¹，比原始ZnSe高出约1.6倍。MXene的高导电性和大表面积通过提供更多活性位点以及从ZnSe到MXene的有效电子转移途径来提高催化性能。这加速了光生载流子的分离和移动，显著减少了复合。我们使用各种表征技术研究了ZnSe-MXene复合材料的光催化产氢机理。我们的研究结果为异质结内的协同效应提供了有益的见解，为先进光催化材料的设计和开发提供了有价值的指导。
