An in situ grown amorphous ZrO2 layer on zeolite for enhanced phosphate adsorption. Issue 26 (6th June 2022)

• Record Type: Journal Article
• Authors: Tao, Ying; Liu, Shaojia; Dong, Shizhi; Wang, Chengguo; Qu, Tao; Li, Sinan; Li, Lingling; Ma, Zhuang
• Is Part Of: RSC advances. Volume 12:Issue 26(2022)
• Page Start: 16751
• Page End: 16762
• Publication Date: 2022-06-06
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra01967a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Zeolite supported amorphous zirconia layer with high specific surface area, abundant adsorption sites and excellent reusability hold a bright prospect in phosphate adsorption, yet it is proven to be still challenging to precisely regulate its synthesis. Abstract : Zeolite supported amorphous metal oxide nanolayers with high specific surface area, abundant adsorption sites, and excellent reusability hold a bright prospect in the efficient removal of contaminants, yet it is proven to be still challenging to precisely regulate and control their synthesis. Herein, we reported a facile synthetic strategy for rational design and achieving the uniform and firm in situ growth of an amorphous ZrO2 layer decorated on the surface of zeolite (ZEO@AZ) for enhanced phosphate adsorption. The Langmuir isotherm model and pseudo-second order kinetic equation well described the adsorption process towards phosphate solution, and the synthetized ZEO@AZ exhibited an excellent maximum adsorption amount of 24.98 mgP g −1 . Furthermore, the adsorption of phosphates on ZEO@AZ was confirmed to be chemisorption, endothermic and spontaneous. This approach for fabricating amorphous metal oxide nanolayers on a robust matrix may provide a new route for constructing composites with superb phosphate adsorption performance.