Highly efficient P uptake by Fe3O4 loaded amorphous Zr-La (carbonate) oxides: Electrostatic attraction, inner-sphere complexation and oxygen vacancies acceleration effect
文献类型：期刊论文
| 作者 | Liu, Chenyang; Wang, Yili; Li, Xiaolin; Li, Junyi ; Dong, Shuoxun; Hao, Haotian; Tong, Yao; Zhou, Yanqing
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| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2022 |
| 卷号 | 120页码:1-12 |
| 关键词 | Fe3O4 loaded amorphous Zr-La (carbonate) oxides Phosphate adsorption performance Regeneration Mechanism Real water treatment |
| ISSN号 | 1001-0742 |
| 英文摘要 | Bimetallic oxides composites have received an increasing attention as promising adsorbents for aqueous phosphate (P) removal in recent years. In this study, a novel magnetic compos-ite MZLCO was prepared by hybridizing amorphous Zr-La (carbonate) oxides (ZLCO) with nano-Fe3O4 through a one-pot solvothermal method for efficient phosphate adsorption. Our optimum sample of MZLCO-45 exhibited a high Langmuir maximum adsorption capacity of 96.16 mg P/g and performed well even at low phosphate concentration. The phosphate ad-sorption kinetics by MZLCO-45 fitted well with the pseudo-second-order model, and the adsorption capacity could reach 79% of the ultimate value within the first 60 min. The phosphate adsorption process was highly pH-dependent, and MZLCO-45 performed well over a wide pH range of 2.0-8.0. Moreover, MZLCO-45 showed a strong selectivity to phos-phate in the presence of competing ions (Cl-, NO3-, SO42-, HCO3-, Ca2+, and Mg2+) and a good reusability using the eluent of NaOH/NaCl mixture, then 64% adsorption capacity re-mained after ten recycles. The initial 2.0 mg P/L in municipal wastewater and surface water could be efficiently reduced to below 0.1mg P/L by 0.07 g/L MZLCO-45, and the phosphate re-moval efficiencies were 95.7% and 96.21%, respectively. Phosphate adsorption mechanisms by MZLCO-45 could be attributed to electrostatic attraction and the inner-sphere complex-ation via ligand exchange forming Zr/La-O-P,-OH and CO32- groups on MZLCO-45 surface played important roles in the ligand exchange process. The existence of oxygen vacancies could accelerate the phosphate absorption rate of the MZLCO-45 composites. (c) 2022 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48452]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 作者单位 | 1.Beijing Forestry University 2.Tsinghua University 3.Chinese Academy of Sciences 4.Research Center for Eco-Environmental Sciences (RCEES) |
| 推荐引用方式 GB/T 7714 | Liu, Chenyang,Wang, Yili,Li, Xiaolin,et al. Highly efficient P uptake by Fe3O4 loaded amorphous Zr-La (carbonate) oxides: Electrostatic attraction, inner-sphere complexation and oxygen vacancies acceleration effect[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2022,120:1-12. |
| APA | Liu, Chenyang.,Wang, Yili.,Li, Xiaolin.,Li, Junyi.,Dong, Shuoxun.,...&Zhou, Yanqing.(2022).Highly efficient P uptake by Fe3O4 loaded amorphous Zr-La (carbonate) oxides: Electrostatic attraction, inner-sphere complexation and oxygen vacancies acceleration effect.JOURNAL OF ENVIRONMENTAL SCIENCES,120,1-12. |
| MLA | Liu, Chenyang,et al."Highly efficient P uptake by Fe3O4 loaded amorphous Zr-La (carbonate) oxides: Electrostatic attraction, inner-sphere complexation and oxygen vacancies acceleration effect".JOURNAL OF ENVIRONMENTAL SCIENCES 120(2022):1-12. |
入库方式： OAI收割
来源：生态环境研究中心
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