Preparation of Ce2(MoO4)3 nanoparticles is reported via the microemulsion method by using two different surfactants, i.e., cationic surfactant, cetyltrimethylammonium bromide (CTAB), and nonionic surfactant, Triton X-100. The water pools produced in the microemulsion systems behave as nanoreactors for reaction of the cerium (3+) and molybdate ions to produce Ce2(MoO4)3 nanoparticles. The structure and morphology of the products were characterized by using Fourier-transform infrared (FT-IR) spectroscopy, energy-dispersive X-ray analysis (EDX), UV-Vis spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis (TGA-DTA), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The prepared Ce2(MoO4)3 nanoparticles were successfully utilized as photocatalysts to remove crystal violet from aqueous solution in which the maximum percentage of dye degradation was about 89% after 5 h under the visible light irradiation. Also, kinetic study of the photocatalytic degradation revealed that pseudo-second order model is the best one for describing kinetic of the reaction.

中文翻译：

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微乳液介导的Ce2（MoO4）3纳米粒子的制备，用于水溶液中结晶紫的光催化降解。

通过使用两种不同的表面活性剂，即阳离子表面活性剂，十六烷基三甲基溴化铵（CTAB）和非离子表面活性剂Triton X-100，通过微乳液法报道了Ce2（MoO4）3纳米颗粒的制备。在微乳液系统中产生的水池充当纳米反应器，用于铈（3+）和钼酸根离子的反应以生成Ce2（MoO4）3纳米粒子。通过傅立叶变换红外（FT-IR）光谱，能量色散X射线分析（EDX），紫外-可见光谱，X射线衍射（XRD），热重分析（TGA）对产品的结构和形态进行表征-DTA），扫描电子显微镜（SEM）和透射电子显微镜（TEM）。制备的Ce2（MoO4）3纳米粒子被成功地用作光催化剂，从可见光照射5 h后，染料的最大降解率约为89％，从水溶液中去除结晶紫。另外，对光催化降解的动力学研究表明，伪二级模型是描述反应动力学的最佳模型。