文献类型：期刊文献

英文题名：New Insight of Fe Valence State Change Using Leaves: A Combined Experimental and Theoretical Study

作者：Zhang, Zejun[1,2];Yang, Yizhou[3];Jiang, Jie[4];Chen, Liang[4,5];Liang, Shanshan[3];Fang, Haiping[3]

机构：[1]Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China;[2]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[3]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[4]Ningbo Univ, Sch Phys Sci & Technol, Ningbo 315211, Peoples R China;[5]Zhejiang A&F Univ, Zhejiang Prov Key Lab Chem Utilizat Forestry Biom, Dept Opt Engn, Hangzhou 311300, Peoples R China

年份：2022

卷号：39

期号：10

外文期刊名：CHINESE PHYSICS LETTERS

收录：;EI(收录号：20224212968229);WOS:【SCI-EXPANDED(收录号:WOS:000863778300001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant Nos. 11974366, 12004110, and 12147169), and the Fundamental Research Funds for the Center Universities.

语种：英文

外文关键词：Aromatic compounds - Aromatization - Charge transfer - Cultivation - Density functional theory - Plants (botany) - Positive ions - Ultraviolet visible spectroscopy - X ray photoelectron spectroscopy

摘要：Fe2+ 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 Fe2+ in plants. Here, we report the Fe valence state change from Fe3+ to Fe2+ 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-pi 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 Fe3+ 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 Fe3+ to Fe2+, and affords a new insight into the valance change between plant organisms with cations.