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Photoreductive Dissolution of Iron (Hydr)oxides and Its Geochemical Significance

  • Ying Lv
    Ying Lv
    CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou 510640, China
    University of Chinese Academy of Sciences, Beijing 100049, China
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  • Jing Liu
    Jing Liu
    CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou 510640, China
    University of Chinese Academy of Sciences, Beijing 100049, China
    Macau University of Science and Technology, State Key Laboratory of Lunar and Planetary Sciences, Avenida Wai Long, Taipa, Macau 999078, China
    More by Jing Liu
  • Runliang Zhu*
    Runliang Zhu
    CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou 510640, China
    University of Chinese Academy of Sciences, Beijing 100049, China
    *Email: [email protected]. Phone: 86-020-85297603 Fax: 86-020-85297603.
    More by Runliang Zhu
  • Jianxi Zhu
    Jianxi Zhu
    CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou 510640, China
    University of Chinese Academy of Sciences, Beijing 100049, China
    More by Jianxi Zhu
  • Qingze Chen
    Qingze Chen
    CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou 510640, China
    University of Chinese Academy of Sciences, Beijing 100049, China
    More by Qingze Chen
  • Xiaoliang Liang
    Xiaoliang Liang
    CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou 510640, China
    University of Chinese Academy of Sciences, Beijing 100049, China
  • , and 
  • Hongping He
    Hongping He
    CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou 510640, China
    University of Chinese Academy of Sciences, Beijing 100049, China
    More by Hongping He
Cite this: ACS Earth Space Chem. 2022, 6, 4, 811–829
Publication Date (Web):March 10, 2022
https://doi.org/10.1021/acsearthspacechem.1c00334
Copyright © 2022 American Chemical Society

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    Abstract

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    Iron (hydr)oxides are the most abundant metal oxides, which are widespread on Earth’s surface in the major form of micro/nanoparticles. Dissolution of iron (hydr)oxides significantly controls their compositions on Earth’s surface and is a critical step for the global Fe cycling. Photoreductive dissolution of iron (hydr)oxides is recognized as one of the most important process for generating Fe2+ in surface water and is also a common pathway for transforming solar energy into chemical energy. This review article dissects the main characteristics of photoreductive dissolution of iron (hydr)oxides and discusses its geochemical and environmental significance. We categorize the mechanisms for photoreduction of iron (hydr)oxides into three types: reduction by intrinsic photogenerated electrons, reduction by ligand to metal electron transfer (LMCT), and reduction by direct injection of exogenous photoelectrons. The efficiency of photoreductive dissolution is constrained by both the structure of iron (hydr)oxides (e.g., crystal structure and particle size) and environmental conditions (e.g., light, pH, and concurrent chemicals). Therefore, different iron (hydr)oxides may exhibit quite distinctive photoreductive dissolution characteristics because of their unique crystal structures and physicochemical properties. Iron (hydr)oxides with low crystallinity (e.g., ferrihydrite, lepidocrocite) are subject to direct photoreductive dissolution, while those with high crystallinity (e.g., goethite, hematite) generally need ligands to proceed with photoreductive dissolution. The photoreductive dissolution of iron (hydr)oxides is involved in many important geochemical and environmental processes, such as the Fe availability to primary producers, the generation of reactive oxygen species, the transportation and fate of contaminants, and the phase transformation of iron (hydr)oxides. Given the ubiquitous occurrence of photoreductive dissolution of iron (hydr)oxides, this review will advance our understanding of the role of this process in Earth’s surface environments.

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    Cited By

    This article is cited by 5 publications.

    1. Zehong Zhang, Jia Ren, Jun Liang, Xiaoyun Xu, Ling Zhao, Hao Qiu, Hao Li, Xinde Cao. New Insight into the Natural Detoxification of Cr(VI) in Fe-Rich Surface Soil: Crucial Role of Photogenerated Silicate-Bound Fe(II). Environmental Science & Technology 2023, 57 (50) , 21370-21381. https://doi.org/10.1021/acs.est.3c05767
    2. Shaofu Huang, Keyan Chen, Xiangyu Chen, Hanpeng Liao, Raymond Jianxiong Zeng, Shungui Zhou, Man Chen. Sunlight Significantly Enhances Soil Denitrification via an Interfacial Biophotoelectrochemical Pathway. Environmental Science & Technology 2023, 57 (20) , 7733-7742. https://doi.org/10.1021/acs.est.3c00236
    3. Nadine Kabengi, (Guest Editor)Udo Becker, (Guest Editor)Gordon E. Brown, Jr. (Guest Editor). Virtual Special Issue of ACS Earth and Space Chemistry in Honor of Prof. Michael F. Hochella, Jr.. ACS Earth and Space Chemistry 2022, 6 (9) , 2115-2117. https://doi.org/10.1021/acsearthspacechem.2c00250
    4. Jinwen Qiu, Xiaokang Hou, Yuan Ren, Chengshuai Liu, Fangyuan Meng, Jyh-Fu Lee, Yu-Jung Lin, Ziyuan Huang, Huanxin Ma, Zhenqing Shi, Chunhua Feng. Photoinduced transformation of ferrihydrite in the presence of aqueous sulfite and its influence on the repartitioning of Cd. Water Research 2023, 231 , 119607. https://doi.org/10.1016/j.watres.2023.119607
    5. Christopher P. West, Ana C. Morales, Jackson Ryan, Maria V. Misovich, Anusha P. S. Hettiyadura, Felipe Rivera-Adorno, Jay M. Tomlin, Andrew Darmody, Brittany N. Linn, Peng Lin, Alexander Laskin. Molecular investigation of the multi-phase photochemistry of Fe( iii )–citrate in aqueous solution. Environmental Science: Processes & Impacts 2023, 25 (2) , 190-213. https://doi.org/10.1039/D1EM00503K

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