Li Chunxue, Liu Xiaoteng, Ding Guixiang, Huo Pengwei, Yan Yan, Yan Yongsheng, Liao Guangfu
Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China.
Inorg Chem. 2022 Mar 21;61(11):4681-4689. doi: 10.1021/acs.inorgchem.1c03936. Epub 2022 Mar 8.
Interior and surface synergistic modifications can endow the photocatalytic reaction with tuned photogenerated carrier flow at the atomic level. Herein, a new class of 2D/2D SnNbO/Ni-doped ZnInS (SNO/Ni-ZIS) S-scheme heterojunctions is synthesized by a simple hydrothermal strategy, which was used to evaluate the synergy between interior and surface modifications. Theoretical calculations show that the S-scheme heterojunction boosts the desorption of H atoms for rapid H evolution. As a result, 25% SNO/Ni-ZIS exhibits significantly improved PHE activity under visible light, roughly 4.49 and 2.00 times stronger than that of single ZIS and Ni-ZIS, respectively. In addition, 25% SNO/Ni-ZIS also shows superior structural stability. This work provides advanced insight for developing high-performance S-scheme systems from photocatalyst design to mechanistic insight.
内部和表面协同修饰能够在原子水平上赋予光催化反应以调控的光生载流子流动。在此，通过一种简单的水热策略合成了一类新型的二维/二维SnNbO/Ni掺杂的ZnInS（SNO/Ni-ZIS）S型异质结，用于评估内部和表面修饰之间的协同作用。理论计算表明，S型异质结促进了H原子的脱附以实现快速析氢。结果，25%的SNO/Ni-ZIS在可见光下表现出显著提高的光催化析氢活性，分别约为单一ZIS和Ni-ZIS的4.49倍和2.00倍。此外，25%的SNO/Ni-ZIS还表现出优异的结构稳定性。这项工作为从光催化剂设计到机理洞察开发高性能S型体系提供了深入的见解。
