New Insight of Fe Valence State Change Using Leaves: A Combined Experimental and Theoretical Study
Fe 2+ is of considerable importance in plant growth and crop production. However, most Fe elements in nature favor existing in the trivalent state, which often causes the deficiency of Fe 2+ in plants. Here, we report the Fe valence state change from Fe 3+ to Fe 2+ by using leaves. This valence stat...
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Published in | Chinese physics letters Vol. 39; no. 10; pp. 108201 - 59 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Chinese Physical Society and IOP Publishing Ltd
01.10.2022
University of Chinese Academy of Sciences,Beijing 100049,China%School of Physics,East China University of Science and Technology,Shanghai 200237,China%School of Physical Science and Technology,Ningbo University,Ningbo 315211,China%School of Physical Science and Technology,Ningbo University,Ningbo 315211,China Department of Optical Engineering,Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass,Zhejiang A & F University,Hangzhou 311300,China Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China |
Online Access | Get full text |
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Summary: | Fe
2+
is of considerable importance in plant growth and crop production. However, most Fe elements in nature favor existing in the trivalent state, which often causes the deficiency of Fe
2+
in plants. Here, we report the Fe valence state change from Fe
3+
to Fe
2+
by using leaves. This valence state change was confirmed by x-ray photoelectron spectroscopy in Fe-Cl@leaves. Fourier transform infrared and ultraviolet-visible spectroscopy demonstrated that aromatic ring groups were included in leaves, and cation-
π
interactions between Fe cations and the components containing aromatic rings in leaves were measured. Further, density functional theory calculations revealed that the most stable adsorption site for hydrated Fe
3+
cation was the region where hydroxyl groups and aromatic rings coexist. Moreover, molecular orbital and charge decomposition analysis revealed that the aromatic rings took the major part (59%) of the whole net charge transfer between leaves and Fe cations. This work provides a high-efficiency and eco-friendly way to transform the Fe valence state from Fe
3+
to Fe
2+
, and affords a new insight into the valance change between plant organisms with cations. |
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ISSN: | 0256-307X 1741-3540 |
DOI: | 10.1088/0256-307X/39/10/108201 |