一种用于从水溶液中去除茜素染料的SnO/CeO纳米复合催化剂。

A SnO/CeO Nano-Composite Catalyst for Alizarin Dye Removal from Aqueous Solutions.

作者信息

Hassan Saad S M, Kamel Ayman H, Hassan Amr A, Amr Abd El-Galil E, El-Naby Heba Abd, Elsayed Elsayed A

机构信息

Chemistry Department, Faculty of Science, Ain Shams University, Abbasia 11566, Cairo, Egypt.

Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284, USA.

出版信息

Nanomaterials (Basel). 2020 Feb 1;10(2):254. doi: 10.3390/nano10020254.

A new SnO/CeO nano-composite catalyst was synthesized, characterized and used for the removal of alizarin dyes from aqueous solutions. The composite material was prepared using a precipitation method. X-ray powder diffractometry (XRD), high resolution transmission electron microscopy (HR-TEM), Brunauer-Emmett-Teller methodology (BET) and Fourier Transform Infrared Spectrometry (ATR-FTIR) were utilized for the characterization of the prepared composite. The prepared nano-composite revealed high affinity for the adsorption and decomposition of alizarin dyes. The adsorption capacity under different experimental conditions (adsorbate concentration, contact time, adsorbent dose and pH) was examined. Under optimized experimental conditions, the removal of alizarin yellow, alizarin red and alizarin-3-methylimino-diacetic acid dyes from aqueous solutions was about 96.4%,87.8% and 97.3%, respectively. The adsorption isotherms agreed with the models of Langmuir, Freundlich and Temkin isotherms.

合成了一种新型的SnO/CeO纳米复合催化剂，对其进行了表征，并用于从水溶液中去除茜素染料。该复合材料采用沉淀法制备。利用X射线粉末衍射仪（XRD）、高分辨率透射电子显微镜（HR-TEM）、布鲁诺尔-埃米特-泰勒方法（BET）和傅里叶变换红外光谱仪（ATR-FTIR）对制备的复合材料进行了表征。制备的纳米复合材料对茜素染料的吸附和分解表现出高亲和力。考察了不同实验条件（吸附质浓度、接触时间、吸附剂剂量和pH值）下的吸附容量。在优化的实验条件下，从水溶液中去除茜素黄、茜素红和茜素-3-甲基亚氨基二乙酸染料的去除率分别约为96.4%、87.8%和97.3%。吸附等温线符合朗缪尔、弗伦德利希和坦金等温线模型。