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DOI | 10.1073/pnas.1902473116 |
Photoelectric conversion on Earth's surface via widespread Fe- and Mn-mineral coatings | |
Lu, Anhuai1,2,3; Li, Yan1,2; Ding, Hongrui1,2; Xu, Xiaoming1,2; Li, Yanzhang1,2; Ren, Guiping1,2; Liang, Jing4; Liu, Yuwei1,2; Hong, Hao4; Chen, Ning5; Chu, Shengqi6; Liu, Feifei1,2; Wang, Haoran1,2; Ding, Cong1,2; Wang, Changqiu1,2; Lai, Yong1,2; Liu, Juan1,7; Dick, Jeffrey3; Liu, Kaihui4; Hochella, Michael F., Jr.8,9 | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2019 |
卷号 | 116期号:20页码:9741-9746 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Canada; USA |
英文摘要 | Sunlight drives photosynthesis and associated biological processes, and also influences inorganic processes that shape Earth's climate and geochemistry. Bacterial solar-to-chemical energy conversion on this planet evolved to use an intricate intracellular process of phototrophy. However, a natural nonbiological counterpart to phototrophy has yet to be recognized. In this work, we reveal the inherent "phototrophic-like" behavior of vast expanses of natural rock/soil surfaces from deserts, red soils, and karst environments, all of which can drive photon-to-electron conversions. Using scanning electron microscopy, transmission electron microscopy, micro-Raman spectroscopy, and X-ray absorption spectroscopy, Fe and Mn (oxyhydr)oxide-rich coatings were found in rock varnishes, as were Fe (oxyhydr)oxides on red soil surfaces and minute amounts of Mn oxides on karst rock surfaces. By directly fabricating a photoelectric detection device on the thin section of a rock varnish sample, we have recorded an in situ photocurrent micromapping of the coatings, which behave as highly sensitive and stable photoelectric systems. Additional measurements of red soil and powder separated from the outermost surface of karst rocks yielded photocurrents that are also sensitive to irradiation. The prominent solarresponsive capability of the phototrophic-like rocks/soils is ascribed to the semiconducting Fe-and Mn (oxyhydr)oxide-mineral coatings. The native semiconducting Fe/Mn-rich coatings may play a role similar, in part, to photosynthetic systems and thus provide a distinctive driving force for redox (bio)geochemistry on Earth's surfaces. |
英文关键词 | phototrophic mineral coatings birnessite solar energy redox (bio)geochemistry |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000467804000014 |
WOS关键词 | ROCK-VARNISH ; DESERT VARNISH ; OXIDATION ; SEAWATER ; SPECTROSCOPY ; REDUCTION ; EVOLUTION ; BACTERIA ; DIOXIDE ; ORIGIN |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/205109 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Peking Univ, Beijing Key Lab Mineral Environm Funct, Sch Earth & Space Sci, Beijing 100871, Peoples R China; 2.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China; 3.Cent S Univ, Sch Geosci & Infophys, Key Lab Metallogen Predict Nonferrous Met & Geol, Changsha 410083, Hunan, Peoples R China; 4.Peking Univ, Sch Phys, Collaborat Innovat Ctr Quantum Matter, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China; 5.Canadian Light Source, Hard Xray MicroAnal HXMA Beamline, Saskatoon, SK S7N 2V3, Canada; 6.Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100039, Peoples R China; 7.Peking Univ, Sch Environm Sci & Engn, Beijing 100871, Peoples R China; 8.Virginia Inst Technol, Dept Geosci, Blacksburg, VA 24061 USA; 9.Pacific Northwest Natl Lab, Subsurface Sci & Technol Grp, Energy & Environm Directorate, Richland, WA 99352 USA |
推荐引用方式 GB/T 7714 | Lu, Anhuai,Li, Yan,Ding, Hongrui,et al. Photoelectric conversion on Earth's surface via widespread Fe- and Mn-mineral coatings[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(20):9741-9746. |
APA | Lu, Anhuai.,Li, Yan.,Ding, Hongrui.,Xu, Xiaoming.,Li, Yanzhang.,...&Hochella, Michael F., Jr..(2019).Photoelectric conversion on Earth's surface via widespread Fe- and Mn-mineral coatings.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(20),9741-9746. |
MLA | Lu, Anhuai,et al."Photoelectric conversion on Earth's surface via widespread Fe- and Mn-mineral coatings".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.20(2019):9741-9746. |
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