Department of Chemistry, Faculty of Science, Imam Khomeini International University, P.O. Box 288, Qazvin, Iran.
Faculty of Chemistry, Kharazmi University, Tehran, Islamic Republic of Iran.
Environ Sci Pollut Res Int. 2020 Apr;27(11):12047-12054. doi: 10.1007/s11356-020-07816-2. Epub 2020 Jan 25.
Preparation of Ce(MoO) 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 Ce(MoO) 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 Ce(MoO) 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.
通过微乳液法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，制备了 Ce(MoO)纳米粒子。微乳液体系中产生的水相作为纳米反应器，用于铈（3+）和钼酸盐离子反应生成 Ce(MoO)纳米粒子。采用傅里叶变换红外（FT-IR）光谱、能谱（EDX）、紫外-可见光谱（UV-Vis）、X 射线衍射（XRD）、热重分析（TGA-DTA）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对产物的结构和形态进行了表征。所制备的 Ce(MoO)纳米粒子成功用作光催化剂，用于在可见光照射下 5 小时内从水溶液中去除结晶紫，最大染料降解率约为 89%。此外，光催化降解的动力学研究表明，拟二级动力学模型最适合描述反应动力学。
