Katsamitros Andreas, Karamoschos Nikolaos, Sygellou Labrini, Andrikopoulos Konstantinos S, Tasis Dimitrios
Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
Foundation of Research and Technology Hellas, Institute of Chemical Engineering Sciences (ICE-HT), P.O. Box 1414, Rio, 26504 Patras, Greece.
Molecules. 2025 Mar 21;30(7):1409. doi: 10.3390/molecules30071409.
Herein, flower-like ZnInS (ZIS) crystallites were grown onto acorn leaf-like CdS assemblies via a two-step hydrothermal approach. Under visible light irradiation, the ZnInS-enriched heterostructures demonstrated an enhanced azo-dye degradation rate, with the majority of the organic analyte (Orange G) being degraded within 60 min. In contrast, the CdS-enriched hybrids showed poor photocatalytic performance. The optimized hybrid containing a nominal CdS content of 4 wt% was characterized by various physicochemical techniques, such as XRD, SEM, XPS and Raman. XPS analysis showed that the electron density around the Zn and In sites in ZnInS was slightly increased, implying a certain charge migration pattern. Complementary information from scavenging experiments suggested that hydroxy radicals were not the exclusive transient responsible for oxidative degradation of the organic azo-dye. This research provides new information about the development of metal chalcogenide-based heterostructures for efficient photocatalytic organic pollutant degradation.
在此，通过两步水热法在橡树叶状硫化镉（CdS）组件上生长出花状硫化锌铟（ZnInS，ZIS）微晶。在可见光照射下，富含ZnInS的异质结构表现出提高的偶氮染料降解速率，大部分有机分析物（橙黄G）在60分钟内被降解。相比之下，富含CdS的杂化物表现出较差的光催化性能。通过各种物理化学技术，如X射线衍射（XRD）、扫描电子显微镜（SEM）、X射线光电子能谱（XPS）和拉曼光谱，对标称CdS含量为4 wt%的优化杂化物进行了表征。XPS分析表明，ZnInS中Zn和In位点周围的电子密度略有增加，这意味着存在一定的电荷迁移模式。清除实验的补充信息表明，羟基自由基并非有机偶氮染料氧化降解的唯一瞬态物质。本研究为开发用于高效光催化有机污染物降解的金属硫族化物基异质结构提供了新信息。
