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“Sea Anemone”-like CeFe Oxides for High-Efficient Phosphate Removal

Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai 519087, China
China Construction Third Bureau Green Industry Investment Co., Ltd., Wuhan 430074, China
Author to whom correspondence should be addressed.
Academic Editor: Xuliang Zhuang
Water 2022, 14(15), 2445;
Received: 30 June 2022 / Revised: 4 August 2022 / Accepted: 5 August 2022 / Published: 7 August 2022
(This article belongs to the Special Issue Carbon Neutrality and Wastewater Treatment)
The excessive release of phosphorus is a prime culprit for eutrophication and algal bloom in the aquatic environment, and there is always an urgent need to develop effective methods to deal with phosphorus pollution. Ce-based oxide is a type of compelling adsorbent for phosphate removal, and a self-templating strategy is used to construct high-performance Ce-based oxides for phosphate adsorption in this study. A “sea anemone”-like CeFe cyanometallate (CM) with a 3D microstructure is fabricated to provide a precursor for synthesizing CeFe-based oxides (CeFe-CM-T) by high-temperature pyrolysis. The as-prepared CeFe-CM-T maintains the “sea anemone” morphology well and has abundant micropores/mesopores, which render its superior phosphate adsorption capacity 1~2 orders of magnitude higher than that of the commercial CeO2 and Fe3O4 materials. Moreover, CeFe-CM-T shows high selectivity for phosphate removal when it co-exists with other anions and natural organic matter and exhibits excellent recycling performance. It demonstrates that both Ce3+ and Ce4+ are reserved in the oxides, where Ce3+ serves as the main active site for phosphate capture, which forms stable Ce-PO4 compounds via a ligand-exchange mechanism. Thus, the self-templating strategy using CM as a precursor is a potential method for synthesizing porous Ce-based oxides for phosphate removal. View Full-Text
Keywords: Ce-based oxides; self-templating strategy; cyanometallates; phosphate removal Ce-based oxides; self-templating strategy; cyanometallates; phosphate removal
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MDPI and ACS Style

Tan, X.; Dong, P.; Min, H.; Luo, J.; Huang, W.; Wang, X.; Li, Q.; Fang, Q. “Sea Anemone”-like CeFe Oxides for High-Efficient Phosphate Removal. Water 2022, 14, 2445.

AMA Style

Tan X, Dong P, Min H, Luo J, Huang W, Wang X, Li Q, Fang Q. “Sea Anemone”-like CeFe Oxides for High-Efficient Phosphate Removal. Water. 2022; 14(15):2445.

Chicago/Turabian Style

Tan, Xiaoying, Pingping Dong, Hongping Min, Jinxue Luo, Wenhai Huang, Xiaodong Wang, Qingqing Li, and Qile Fang. 2022. "“Sea Anemone”-like CeFe Oxides for High-Efficient Phosphate Removal" Water 14, no. 15: 2445.

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