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An in situ grown amorphous ZrO2 layer on zeolite for enhanced phosphate adsorption.

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.

SUBMITTER: Tao Y 

PROVIDER: S-EPMC9170381 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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An <i>in situ</i> grown amorphous ZrO<sub>2</sub> layer on zeolite for enhanced phosphate adsorption.

Tao Ying Y   Liu Shaojia S   Dong Shizhi S   Wang Chengguo C   Qu Tao T   Li Sinan S   Li Lingling L   Ma Zhuang Z  

RSC advances 20220606 26

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 <i>in situ</i> growth of an amorphous ZrO<sub>2</sub> layer decorated on the surface of zeolite (ZEO@AZ  ...[more]

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