Srinivas Billakanti, Pandit Manzoor Ahmad, Muralidharan Krishnamurthi
School of Chemistry, University of Hyderabad, Hyderabad 500046, India.
ACS Omega. 2019 Sep 4;4(12):14970-14980. doi: 10.1021/acsomega.9b01766. eCollection 2019 Sep 17.
The focus of the work is the synthesis of SnS nanomaterials with () and without () the involvement of the organic template and the comparative study of their catalytic activities. The synthesis of these materials was achieved in a single-step procedure aided by hexamethyldisilazane (HMDS). These nanoparticles were subjected to X-ray diffraction, transmission electron microscopy, scanning electron microscopy, Raman spectroscopy, and UV-vis spectroscopy analyses to investigate their structural, topographical, surface, and optical properties. The present work suggests that the surfactant-free SnS nanoring () catalyst has lower surface area compared to the poly(ethylene glycol)-stabilized SnS nanoflower () catalyst but shows high activity under visible light for the photoreduction of Cr(VI) and the photocatalytic degradation of organic dyes. The work exposed the importance of the clean surfaces on the catalyst and is expected to have a high impact on the photocatalytic activity of the SnS nanomaterial. The study also endorses the utility of the HMDS-assisted synthetic method for the production of multifunctional semiconductor tin disulfide nanomaterials with multiple potential applications.
这项工作的重点是在有无有机模板参与的情况下合成硫化锡纳米材料，并对其催化活性进行比较研究。这些材料的合成是在六甲基二硅氮烷（HMDS）辅助下通过一步法实现的。对这些纳米颗粒进行了X射线衍射、透射电子显微镜、扫描电子显微镜、拉曼光谱和紫外可见光谱分析，以研究其结构、形貌、表面和光学性质。目前的工作表明，与聚乙二醇稳定的硫化锡纳米花催化剂相比，无表面活性剂的硫化锡纳米环催化剂的表面积较低，但在可见光下对Cr(VI)的光还原和有机染料的光催化降解表现出高活性。这项工作揭示了催化剂表面清洁的重要性，预计对硫化锡纳米材料的光催化活性有很大影响。该研究还认可了HMDS辅助合成方法在生产具有多种潜在应用的多功能半导体二硫化锡纳米材料方面的实用性。
