Sujubili Narzary, Sanat Das, P. P. Gohain, K. Chakraborty, M. G. Choudhury, Samrat Paul
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引用次数: 0
摘要
为了在环境和能源应用中更好地利用太阳能,人们付出了巨大的努力。创造环境友好、经济可行、化学效率高的工艺是当今化学界面临的主要挑战。本研究的主要目标是合成并确认无铅卤化物包晶石在可见光照射下光催化降解水溶液中有机染料(即曙红 B 和曙红 Y)的可行性。利用溶液法成功合成了无铅卤化铯钛 Cs2TiX6(X=Cl,Br)双包晶化合物。各种光学、形态和结构表征技术,如 X 射线衍射 (XRD)、紫外可见分光光度计、光致发光光谱 (PL)、Zeta 电位、扫描电子显微镜 (SEM) 和透射电子显微镜 (TEM),证实了包晶石光催化剂的有效合成。Cs2TiCl6 和 Cs2TiBr6 包晶光催化剂对曙红 B 的光降解效率分别为 59.12% 和 48.77%,对曙红 Y 的光降解效率分别为 72.35% 和 89.94%。
Synthesis and characterization of Cs2TiX6(X=Cl, Br) double perovskites forphotocatalytic dye degradation
Massive efforts have been undertaken for better utilization of solar energy in environmental and energy applications. The creation of environmentally friendly, economically viable, and chemically efficient processes is today's key chemistry challenge. The primary goal of this study is to synthesize and confirm the viability of lead-free halide perovskite for photocatalytic efficiency in the degradation of organic dyes namely, Eosin B and Eosin Y in water solutions when exposed to visible light. Lead-free Cesium Titanium halide Cs2TiX6 (X=Cl, Br) double perovskite compound was successfully synthesized by solution process method. The effective synthesis of perovskite photocatalysts was confirmed by various optical, morphological, and structural characterization techniques such as X-ray diffraction (XRD), UV-visible spectrophotometer, Photoluminescence spectroscopy (PL), Zeta potential, Scanning Electron Microscope (SEM), and Transmission Electron Microscope (TEM).Positive zeta values reveal that the generated photocatalyst is functional with the adsorption of anionic dyes. The photodegradation efficiency of Eosin Y by the synthesized perovskite photocatalysts was substantially higher than that of Eosin B.The photocatalytic degradation efficiency of Cs2TiCl6 and Cs2TiBr6 perovskite photocatalysts for Eosin B is 59.12% and 48.77%, respectively, and 72.35% and 89.94% for Eosin Y.