Coupled effects of iron (hydr)oxides and clay minerals on the heterogeneous oxidation of aqueous Mn(II) and crystallization of manganese (hydr)oxides
文献类型：期刊论文
| 作者 | Yang, Yixuan2,3,4; Chen, Qingze2,3,4; Liu, Jing1,5; Xing, Jieqi2,3,4; Yang, Yiping2,3,4; Zhu, Runliang2,3,4 ; He, Hongping2,3,4; Hochella, Michael F.6
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| 刊名 | GEOCHIMICA ET COSMOCHIMICA ACTA
 |
| 出版日期 | 2025 |
| 卷号 | 388页码:167-181 |
| 关键词 | Nanominerals and mineral nanoparticles Crystallization by particle attachment Mineral heteroaggregates Manganese (hydr)oxides Iron (hydr)oxides Clay minerals |
| ISSN号 | 0016-7037 |
| DOI | 10.1016/j.gca.2024.09.034 |
| 英文摘要 | The formation of nanominerals and mineral nanoparticles (NMMNs) has drawn broad attention due to their high reactivity and omnipresence in the environment. While the heterogeneous formation of NMMNs on surfaces of various minerals has been extensively studied, there is limited understanding of how mineral heteroaggregates influence this process. In this study, we investigated how heteroaggregates of iron (hydr)oxides and clay minerals affect the heterogeneous oxidation of aqueous Mn(II) and crystallization of manganese (hydr)oxides (MnOx). Our results revealed that iron (hydr)oxides (ferrihydrite) and clay minerals (kaolinite or montmorillonite) in heteroaggregates exerted coupled effects on these processes, dictating the distribution of Mn and the morphology of MnOx. Specifically, ferrihydrite catalyzed gradual oxidative removal of Mn(II) and triggered MnOx nucleation; in contrast, kaolinite/montmorillonite rapidly adsorbed Mn(II) but hardly catalyzed its oxidation. These reactions collectively resulted in fast adsorption and gradual oxidation of Mn(II) on the heteroaggregates. Further, MnOx nanoparticles formed on ferrihydrite surfaces migrated to kaolinite/montmorillonite surfaces, leading to interactions between MnOx and various component minerals within the heteroaggregates. This significantly altered the subsequent growth pathways and the eventual morphology of MnOx. Consequently, while MnOx nanoparticles in the ferrihydrite-only system aggregated freely and formed well-extended nanowires, those in the ferrihydrite-kaolinite system predominantly became short nanorods due to the immobilization by kaolinite surfaces; in the ferrihydrite-montmorillonite system, considerable MnOx nanoparticles attached to montmorillonite surfaces due to strong electrostatic attraction, and subsequently grew into blocky particles via particle attachment. These findings illustrate that surface reactivities of heteroaggregated ferrihydrite and kaolinite/ montmorillonite are coupled when they interact with aqueous Mn(II) or MnOx. Our work exemplifies, for the first time, the cooperation between surfaces of various minerals during the heterogeneous formation of NMMNs. Findings from this study also enhance our understanding of MnOx formation on surfaces with diverse atomic structures, and contribute to the knowledge of Mn cycling in the environment. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001385658800001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81869]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Zhu, Runliang |
| 作者单位 | 1.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Macau 999078, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 3.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.CNSA Macau Ctr Space Explorat & Sci, Taipa, Macao, Peoples R China 6.Virginia Tech, Dept Geosci, Blacksburg, VA 24061 USA |
| 推荐引用方式 GB/T 7714 | Yang, Yixuan,Chen, Qingze,Liu, Jing,et al. Coupled effects of iron (hydr)oxides and clay minerals on the heterogeneous oxidation of aqueous Mn(II) and crystallization of manganese (hydr)oxides[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2025,388:167-181. |
| APA | Yang, Yixuan.,Chen, Qingze.,Liu, Jing.,Xing, Jieqi.,Yang, Yiping.,...&Hochella, Michael F..(2025).Coupled effects of iron (hydr)oxides and clay minerals on the heterogeneous oxidation of aqueous Mn(II) and crystallization of manganese (hydr)oxides.GEOCHIMICA ET COSMOCHIMICA ACTA,388,167-181. |
| MLA | Yang, Yixuan,et al."Coupled effects of iron (hydr)oxides and clay minerals on the heterogeneous oxidation of aqueous Mn(II) and crystallization of manganese (hydr)oxides".GEOCHIMICA ET COSMOCHIMICA ACTA 388(2025):167-181. |
入库方式： OAI收割
来源：广州地球化学研究所
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