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ZnSe nanoparticles prepared by coprecipitation method for photocatalytic applications
Materials Letters ( IF 3 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.matlet.2020.128702
A. Sanchez-Martinez , J.P. Ortiz-Beas , A.M. Huerta-Flores , Edgar R. López-Mena , J. Pérez-Álvarez , O. Ceballos-Sanchez

Abstract A simple coprecipitation method was used to synthetize pure zinc selenide (ZnSe) nanoparticles (NP’s) and ZnSe NP’s with traces of elemental selenium (ZnSe:Se). The physicochemical properties of ZnSe and ZnSe:Se NP’s were analyzed and correlated with their photocatalytic activity for hydrogen production and rhodamine B (RhB) degradation under ultraviolet (UV) light irradiation. The X-ray diffraction (XRD) analysis indicated the formation of a zinc blende-type ZnSe with the presence of elemental Se and a crystallite size of ~6 nm. The scanning (SEM) and transmission (TEM) electron microscopies showed ZnSe NP’s with a spherical morphology. A red shift of absorption edge was observed when Se traces are present in ZnSe-NP’s. The improved photocatalytic activity of ZnSe:Se NP’s for hydrogen (H2) production via water splitting and RhB degradation was related to the fact that elemental Se acts as a co-catalyst to separate the photogenerated charge carriers.

中文翻译:

通过共沉淀法制备的用于光催化应用的 ZnSe 纳米粒子

摘要 使用简单的共沉淀法合成纯硒化锌 (ZnSe) 纳米粒子 (NP's) 和含有痕量元素硒 (ZnSe:Se) 的 ZnSe NP's。分析了 ZnSe 和 ZnSe:Se NP 的理化性质,并将其与它们在紫外 (UV) 光照射下产生氢和罗丹明 B (RhB) 降解的光催化活性相关联。X 射线衍射 (XRD) 分析表明形成了闪锌矿型 ZnSe,其中存在元素 Se,微晶尺寸约为 6 nm。扫描 (SEM) 和透射 (TEM) 电子显微镜显示具有球形形态的 ZnSe NP。当 ZnSe-NP 中存在 Se 痕量时,观察到吸收边缘的红移。ZnSe 提高的光催化活性:
更新日期:2021-01-01
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