Efficient interfacial charge transfer and robust interface interactions are crucial to achieve superior spatial separation of carriers and develop advanced heterogeneous photocatalysts. This study describes the synthesis of a novel S-scheme heterojunction of ZnO/InS, with S−O covalent bonds, achieved through a hydrothermal method. The optimized heterojunction shows exceptional photocatalytic activity, achieving a H generation rate of 2488 μmol g h and a degradation efficiency of 86 % for tetracycline hydrochloride (TCH) within 2 h. These values surpass those of InS alone by 35 and 1.4 times, respectively. Various techniques, including electron spin resonance, X-ray photoelectron spectroscopy, Kelvin probe force microscopy and density functional theory calculations confirm the S-scheme heterojunction. The establishment of a chemical S−O bond between InS and ZnO facilitates an atomic level interfacial pathway, enabling efficient transportation of interfacial electrons.

中文翻译：

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具有 S−O 共价键的 S 型 ZnO/In2S3 光催化剂的协同界面工程：盐酸四环素降解和析氢的双功能进展


高效的界面电荷转移和强大的界面相互作用对于实现载流子的卓越空间分离和开发先进的异质光催化剂至关重要。本研究描述了通过水热法合成具有 S−O 共价键的新型 S 型 ZnO/InS 异质结。优化后的异质结表现出优异的光催化活性，在2小时内实现了2488 μmol g·h的H生成率和86%的盐酸四环素（TCH）降解效率。这些值分别超过 InS 的 35 倍和 1.4 倍。各种技术，包括电子自旋共振、X射线光电子能谱、开尔文探针力显微镜和密度泛函理论计算证实了S型异质结。 InS和ZnO之间化学S−O键的建立促进了原子级界面路径，实现了界面电子的有效传输。