Surface-dependent generation of reactive oxygen species at pyrite-water interface
文献类型：期刊论文
| 作者 | Xian, Haiyang2; Yang, Yiping2; Zhu, Jianxi1,2; Lin, Xiaoju2; Liang, Xiaoliang2 ; Zhu, Runliang2; He, Hongping2
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| 刊名 | AIP ADVANCES
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 13期号:11页码:5 |
| DOI | 10.1063/5.0174263 |
| 英文摘要 | The generation of reactive oxygen species (ROS) at the pyrite-water interface is an important discovery for both early Earth's and present environments in the past two decades. In these revealed reactions, pyrite can oxidize water to ROS and reduce O-2 and ROS to water. However, the two types of reactions are controversial. The underlying physical theory responsible for the reactions has yet to be elucidated. In this study, we established a surface structure-dependent model of oxidation and reduction potentials (ORP) for semiconductors. Surface atomic structure-dependent electronic structures were adopted to estimate the ORP of pyrite. We apply this model to gain insights into the generation of ROS at the pyrite-water interface. The results demonstrate that the surface structure of pyrite controls its ORP, and ROS production can only occur on certain pyrite facets. The {210} and {111} facets with certain defects (e.g., 210-2S ' and 111-3S, respectively) could oxidize either H2O or OH- to O-2, and ROS form during the oxidation of pyrite surfaces by O-2. This suggests that surface effects play a crucial role in governing the ORP of semiconducting minerals. Accurately calculating surface ORP could potentially be used to better understand redox reactions and develop more efficient catalysts. |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001124144200001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/75982]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Zhu, Jianxi |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, 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 |
| 推荐引用方式 GB/T 7714 | Xian, Haiyang,Yang, Yiping,Zhu, Jianxi,et al. Surface-dependent generation of reactive oxygen species at pyrite-water interface[J]. AIP ADVANCES,2023,13(11):5. |
| APA | Xian, Haiyang.,Yang, Yiping.,Zhu, Jianxi.,Lin, Xiaoju.,Liang, Xiaoliang.,...&He, Hongping.(2023).Surface-dependent generation of reactive oxygen species at pyrite-water interface.AIP ADVANCES,13(11),5. |
| MLA | Xian, Haiyang,et al."Surface-dependent generation of reactive oxygen species at pyrite-water interface".AIP ADVANCES 13.11(2023):5. |
入库方式： OAI收割
来源：广州地球化学研究所
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