Retention and release of black phosphorus nanoparticles in porous media under various physicochemical conditions
文献类型：期刊论文
| 作者 | Liang, Yan3; Liu, Jinxing3; Dong, Pengcheng3; Qin, Yan3 ; Zhang, Rupin2; Bradford, Scott A.1
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| 刊名 | Chemosphere
 |
| 出版日期 | 2023 |
| 卷号 | 339页码:139604 |
| ISSN号 | 0045-6535 |
| DOI | 10.1016/j.chemosphere.2023.139604 |
| 英文摘要 | Black phosphorus nanosheets/nanoparticles (BPNs) are widely applied in many fields. However, the transport of BPNs in the subsurface still has not yet been reported and there is increasing concern about potential adverse impacts on ecosystems. Roles of median grain size and surface roughness, BPN concentration, and solution chemistries (pH, ionic strength, and cation types) on the retention and release of BPNs in column experiments were therefore investigated. The mobility of BPNs significantly increased with increasing grain size and decreasing surface roughness due to their influence on the mass transfer rate, number of deposition sites and retention capacity, and straining processes. Transport of BPNs was enhanced with an increase in pH and a decrease in ionic strength because of surface deprotonation and stronger repulsion that tends to reduce aggregation. The BPN transport was significantly sensitive to ionic strength, compared with other engineered nanoparticles. Additionally, charge heterogeneity and cation-bridging played a critical role in the retention of BPNs in the presence of divalent cations. Higher input concentrations increased the retention of BPNs, probably because collisions, aggregation at pore throat locations, and hydrodynamic bridging were more pronounced. Small fractions of BPNs can be released under decreasing IS and increasing pH due to the expansion of the electrical double layer and increased repulsion at convex roughness locations. A mathematical model that includes provisions for advective dispersive transport and time-dependent retention with blocking or ripening terms well described the retention and release of BPNs. These findings provide fundamental information that helps to understand the transport of BPNs in the subsurface environments. ? 2023 Elsevier Ltd |
| 语种 | 英语 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80269]  |
| 专题 | 有机地球化学国家重点实验室 |
| 作者单位 | 1.USDA, ARS, SAWS Unit, Davis; CA; 95616, United States 2.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou; 510640, China 3.School of Resources, Environment and Materials, Guangxi University, Nanning; 530004, China |
| 推荐引用方式 GB/T 7714 | Liang, Yan,Liu, Jinxing,Dong, Pengcheng,et al. Retention and release of black phosphorus nanoparticles in porous media under various physicochemical conditions[J]. Chemosphere,2023,339:139604. |
| APA | Liang, Yan,Liu, Jinxing,Dong, Pengcheng,Qin, Yan,Zhang, Rupin,&Bradford, Scott A..(2023).Retention and release of black phosphorus nanoparticles in porous media under various physicochemical conditions.Chemosphere,339,139604. |
| MLA | Liang, Yan,et al."Retention and release of black phosphorus nanoparticles in porous media under various physicochemical conditions".Chemosphere 339(2023):139604. |
入库方式： OAI收割
来源：广州地球化学研究所
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