干旱区生态环境知识资源中心(Arid): Photoelectric conversion on Earth's surface via widespread Fe- and Mn-mineral coatings

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DOI	10.1073/pnas.1902473116
	Photoelectric conversion on Earth's surface via widespread Fe- and Mn-mineral coatings
	Lu, Anhuai 1,2,3; Li, Yan1,2 ; Ding, Hongrui 1,2; Xu, Xiaoming 1,2; Li, Yanzhang 1,2; Ren, Guiping 1,2; Liang, Jing 4; Liu, Yuwei 1,2; Hong, Hao 4; Chen, Ning 5; Chu, Shengqi 6; Liu, Feifei 1,2; Wang, Haoran 1,2; Ding, Cong 1,2; Wang, Changqiu 1,2; Lai, Yong 1,2; Liu, Juan 1,7; Dick, Jeffrey 3; Liu, Kaihui 4; Hochella, Michael F., Jr.8,9
通讯作者	Lu, Anhuai ; Liu, Kaihui ; Hochella, Michael F., Jr.
来源期刊	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
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
类型	Article
语种	英语
国家	Peoples R China ; Canada ; USA
开放获取类型	Green Published, Bronze
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
来源机构	北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218177
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]. 北京大学,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.