Competitive arsenate and phosphate adsorption on alpha-FeOOH, LaOOH, and nano-TiO2: Two-dimensional correlation spectroscopy study
文献类型：期刊论文
| 作者 | Li, Xiaochen; Yan, Li; Zhong, Wen; Kersten, Michael; Jing, Chuanyong |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2021-07-15 |
| 卷号 | 414页码:- |
| ISSN号 | 0304-3894 |
| 关键词 | AsO43- PO43- Competitive adsorption ATR-FTIR 2D-COS |
| 英文摘要 | Competitive adsorption of arsenate (AsO43-) and phosphate (PO43-) on alpha-FeOOH, LaOOH, and nano-TiO2 was studied using batch adsorption experiments and in-situ flow cell ATR-FTIR coupled with two-dimensional correlation spectroscopy (2D-COS) for the first time. With a higher temporal resolution, our results found a highly dynamic adsorption sequence for AsO43- and PO43-. When AsO43- and PO(4)(3-)were simultaneously exposed to the adsorbents at the same concentrations, AsO(4)(3-)was preferentially adsorbed by alpha-FeOOH and TiO2, but PO43- adsorption was dominant on LaOOH. The results implied that the PO43- adsorbed on LaOOH had to be remobilized to allow for AsO43- adsorption, but that PO43- adsorption on alpha-FeOOH and TiO2 was hindered by faster AsO43- adsorption. Crystal orbital Hamilton population (COHP) analysis revealed that AsO43- complexes bonded more strongly on alpha-FeOOH and TiO2, whereas PO43- complexes were more stable on LaOOH. Different adsorption sequences and the stability of the complexes were attributed to the diverse geometric configurations of AsO43- and PO43- on metal oxides surfaces with specific bonding chemistry. The presence of Ca2+ did not affect AsO43- and PO43- adsorption sequence on alpha-FeOOH or LaOOH, but it reversed the adsorption sequence on TiO2 due to the formation of ternary surface complexes on TiO2 surfaces. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45690]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Johannes Gutenberg Univ Mainz, Geosci Inst, D-55099 Mainz, Germany 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiaochen,Yan, Li,Zhong, Wen,et al. Competitive arsenate and phosphate adsorption on alpha-FeOOH, LaOOH, and nano-TiO2: Two-dimensional correlation spectroscopy study[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,414:-. |
| APA | Li, Xiaochen,Yan, Li,Zhong, Wen,Kersten, Michael,&Jing, Chuanyong.(2021).Competitive arsenate and phosphate adsorption on alpha-FeOOH, LaOOH, and nano-TiO2: Two-dimensional correlation spectroscopy study.JOURNAL OF HAZARDOUS MATERIALS,414,-. |
| MLA | Li, Xiaochen,et al."Competitive arsenate and phosphate adsorption on alpha-FeOOH, LaOOH, and nano-TiO2: Two-dimensional correlation spectroscopy study".JOURNAL OF HAZARDOUS MATERIALS 414(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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