Fabrication of CaCO3 Microcubes and Mechanistic Study for Efficient Removal of Pb from Aqueous Solution
文献类型：期刊论文
| 作者 | Naseer, Ufra2,3; Mushtaq, Asim3; Ali, Muhammad3; Ali, Moazzam3; Ahmad, Atif1; Yousaf, Muhammad3; Yue, Tianxiang2 |
| 刊名 | MATERIALS
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 17期号:22页码:5523 |
| 关键词 | CaCO3 Pb(II) contamination adsorbent adsorption ion-exchange reaction |
| DOI | 10.3390/ma17225523 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Pb(II) contamination in aquatic environments has adverse effects on humans even at a low concentration, so the efficient removal of Pb at a low cost is vital for achieving an environmentally friendly, sustainable, and healthy society. A variety of CaCO3-based functional adsorbents have been synthesized to remove Pb, but the adsorption capacity is still unsatisfactory. Herein, calcite CaCO3 microcubes/parallelepipeds are synthesized via simple precipitation and a hydrothermal approach and found to outperform previously reported nano-adsorbents considerably. The CaCO3 achieves a high removal efficiency for Pb(II) (>99%) at a very low dosage (0.04-0.1 g/L) and an initial Pb(II) concentration of 100 mg/L. The CaCO3 presents an excellent adsorption capacity of 4018 mg/g for Pb(II) removal and depicts good stability over a wide range of pH 6-11. The maximum adsorption kinetics are fitted well by the pseudo-second-order kinetic model, whereas the Freundlich isotherm delineates the adsorption data at equilibrium well, indicating a multilayer adsorption process. The ex situ study confirms that the Pb(II) adsorption mechanism by CaCO3 can be attributed to the rapid metal-ion-exchange reaction between Pb(II) and Ca2+. Furthermore, a red shift in the Fourier Transform Infrared (FTIR) spectroscopy peak from 1386 cm(-1) to 1374 cm(-1) of CaCO3 after Pb removal indicates the adsorption of Pb onto the surface. This adsorbent provides an opportunity to treat wastewater and can be extended to remove other toxic heavy metals. |
| WOS关键词 | HEAVY-METAL IONS ; CALCIUM-CARBONATE ; ADSORPTION ; LEAD ; IRON ; RECOVERY ; WATER |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| WOS记录号 | WOS:001366765000001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/210471]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 通讯作者 | Yousaf, Muhammad; Yue, Tianxiang |
| 作者单位 | 1.Univ Bologna, Dept Biol Geol & Environm Sci, I-40126 Bologna, Italy 2.Chinese Acad Sci, Inst Geog Sci, State Key Lab Resources & Environm Informat Syst, Beijing 100871, Peoples R China 3.Zhejiang Univ, ZJU Hangzhou Global Sci & Technol Innovat Ctr, Hangzhou 311200, Peoples R China |
| 推荐引用方式 GB/T 7714 | Naseer, Ufra,Mushtaq, Asim,Ali, Muhammad,et al. Fabrication of CaCO3 Microcubes and Mechanistic Study for Efficient Removal of Pb from Aqueous Solution[J]. MATERIALS,2024,17(22):5523. |
| APA | Naseer, Ufra.,Mushtaq, Asim.,Ali, Muhammad.,Ali, Moazzam.,Ahmad, Atif.,...&Yue, Tianxiang.(2024).Fabrication of CaCO3 Microcubes and Mechanistic Study for Efficient Removal of Pb from Aqueous Solution.MATERIALS,17(22),5523. |
| MLA | Naseer, Ufra,et al."Fabrication of CaCO3 Microcubes and Mechanistic Study for Efficient Removal of Pb from Aqueous Solution".MATERIALS 17.22(2024):5523. |
入库方式： OAI收割
来源：地理科学与资源研究所
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