We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
"Sea Anemone"-like CeFe Oxides for High-Efficient Phosphate Removal.
- Authors
Tan, Xiaoying; Dong, Pingping; Min, Hongping; Luo, Jinxue; Huang, Wenhai; Wang, Xiaodong; Li, Qingqing; Fang, Qile
- Abstract
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.
- Subjects
PHOSPHATE removal (Water purification); SEA anemones; PHOSPHATES; ADSORPTION capacity; OXIDES; ALGAL blooms
- Publication
Water (20734441), 2022, Vol 14, Issue 15, p2445
- ISSN
2073-4441
- Publication type
Article
- DOI
10.3390/w14152445