College of Chemistry and Materials Engineering , Anhui Science and Technology University , Bengbu , Anhui 233030 , P. R. China.
Key Lab of Clean Energy and Green Circulation , Huaibei Normal University , Huaibei , Anhui 235000 , P. R. China.
ACS Appl Mater Interfaces. 2019 Dec 18;11(50):46735-46745. doi: 10.1021/acsami.9b14450. Epub 2019 Dec 6.
A series of novel CdS/CdInS composite materials were prepared via a one-pot solvothermal process. The as-obtained photocatalysts were characterized by several techniques and the photocatalytic properties of CdS/CdInS photocatalysts were studied by photocascade synthesis of Schiff base compounds in a photocatalytic reaction system of aromatic alcohols and nitrobenzene irradiated with visible light. The results reveal that the resulting CdS/CdInS heterostructure samples show outstanding photocatalytic activities toward the photocascade production of Schiff base compounds in an aromatic alcohols and nitrobenzene reaction system irradiated with visible light. An optimized 50.0% CdS/CdInS heterostructure sample shows the highest Schiff base yield of 42.0% irradiated with visible light for 4 h, which is approximately 19.1 and 1.54 times higher than those of sole CdS and CdInS samples, respectively. The fabrication of heterogeneous structure improves the spatial separation and migration of photoinduced electron-hole pairs, thus contributing to the enhancement of photocatalytic properties. We foresee that this finding can offer a strategy to develop heterostructure composites for efficient synthesis of organics by photocatalysis under mild conditions.
通过一锅溶剂热法制备了一系列新型的 CdS/CdInS 复合材料。通过多种技术对所获得的光催化剂进行了表征，并通过在可见光照射下的芳香醇和硝基苯的光催化反应体系中光级联合成希夫碱化合物研究了 CdS/CdInS 光催化剂的光催化性能。结果表明，所得的 CdS/CdInS 异质结构样品在可见光照射下的芳香醇和硝基苯反应体系中对希夫碱化合物的光级联生产表现出优异的光催化活性。优化的 50.0%CdS/CdInS 异质结构样品在可见光照射 4 小时后显示出最高的希夫碱产率为 42.0%，分别比单独的 CdS 和 CdInS 样品高约 19.1 和 1.54 倍。异质结构的构建提高了光生电子-空穴对的空间分离和迁移，从而提高了光催化性能。我们预计，这一发现可以为在温和条件下通过光催化高效合成有机化合物提供一种开发异质结构复合材料的策略。
