• 文献检索
  • 文档翻译
  • 深度研究
  • 学术资讯
  • Suppr Zotero 插件Zotero 插件
  • 邀请有礼
  • 套餐&价格
  • 历史记录
应用&插件
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
定价
高级版会员购买积分包购买API积分包
服务
文献检索文档翻译深度研究API 文档MCP 服务
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利：CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2026

文献检索

告别复杂PubMed语法，用中文像聊天一样搜索，搜遍4000万医学文献。AI智能推荐，让科研检索更轻松。

立即免费搜索

文件翻译

保留排版，准确专业，支持PDF/Word/PPT等文件格式，支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述，25分钟生成高质量综述，智能提取关键信息，辅助科研写作。

立即免费体验

铝取代作用下赤铁矿晶体形态变化的机制：铁和氧网状密度的改变

Mechanisms on the morphology variation of hematite crystals by Al substitution: The modification of Fe and O reticular densities.

作者信息

Li Wei, Liang Xiaoliang, An Pengfei, Feng Xionghan, Tan Wenfeng, Qiu Guohong, Yin Hui, Liu Fan

机构信息

Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtse River) Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, PR China.

CAS Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, PR China.

出版信息

Sci Rep. 2016 Oct 27;6:35960. doi: 10.1038/srep35960.

DOI:10.1038/srep35960
PMID:27786290
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5081525/
Abstract

Al substitution in hematite is ubiquitous in soils. With the increase of Al amount, the hematite morphology changes from rhombohedral crystals to disk-shaped ones, but the underlying mechanism is poorly understood. Herein, a series of Al-substituted hematite were synthesized and characterized by synchrotron X-ray diffraction (SXRD), field emission scanning electron microscopy (FESEM), high resolution electron transmission microscopy (HRTEM) and extended X-ray absorption fine structure (EXAFS) spectroscopy, to investigate the effects of Al substitution on the hematite structure and morphology. EXAFS and Rietveld structural refinement analyses find an increase in face-sharing (along c axis) Fe-Me (Me = Al, Fe) distances, edge-sharing (in a-b plane) Fe-Me (Me = Al, Fe) distances, and O-O average distances. Moreover, the face-sharing Fe-Me distances and O-O distances along c axis increase more significantly. This indicates a more apparent decrease in the reticular densities of Fe and O along the direction of c axis, which facilitates faster crystal growth along c axis and results in the evolution of morphology of Al-substituted hematite to disk-shaped crystals. The above results provide new insights into the morphology changes and environmental geochemistry behaviors of Al-contained hematite in soils, and are benefit for the control of crystal morphologies during its application as environmentally-friendly materials.

摘要

土壤中赤铁矿的铝替代现象普遍存在。随着铝含量的增加，赤铁矿的形态从菱面体晶体转变为盘状晶体，但其潜在机制尚不清楚。在此，合成了一系列铝替代赤铁矿，并通过同步辐射X射线衍射（SXRD）、场发射扫描电子显微镜（FESEM）、高分辨率电子透射显微镜（HRTEM）和扩展X射线吸收精细结构（EXAFS）光谱对其进行表征，以研究铝替代对赤铁矿结构和形态的影响。EXAFS和Rietveld结构精修分析发现，共面（沿c轴）的Fe-Me（Me = Al、Fe）距离、共边（在a-b平面）的Fe-Me（Me = Al、Fe）距离以及O-O平均距离均增加。此外，沿c轴的共面Fe-Me距离和O-O距离增加更为显著。这表明沿c轴方向Fe和O的网状密度明显降低，这有利于沿c轴更快地晶体生长，并导致铝替代赤铁矿形态演变为盘状晶体。上述结果为土壤中含铝赤铁矿的形态变化和环境地球化学行为提供了新的见解，有助于在其作为环境友好材料应用过程中控制晶体形态。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/4f7225f9a94e/srep35960-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/30b05c006e5f/srep35960-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/75a24a0aae48/srep35960-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/c0896f832e2f/srep35960-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/9e607bbec740/srep35960-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/0faa4215d9c1/srep35960-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/bf6f3a58d0e2/srep35960-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/e300cfbb7919/srep35960-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/4f7225f9a94e/srep35960-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/30b05c006e5f/srep35960-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/75a24a0aae48/srep35960-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/c0896f832e2f/srep35960-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/9e607bbec740/srep35960-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/0faa4215d9c1/srep35960-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/bf6f3a58d0e2/srep35960-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/e300cfbb7919/srep35960-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/041a/5081525/4f7225f9a94e/srep35960-f8.jpg

相似文献

1
Mechanisms on the morphology variation of hematite crystals by Al substitution: The modification of Fe and O reticular densities.铝取代作用下赤铁矿晶体形态变化的机制：铁和氧网状密度的改变
Sci Rep. 2016 Oct 27;6:35960. doi: 10.1038/srep35960.
2
Natural attenuation of arsenic in the environment by immobilization in nanostructured hematite.环境中砷的纳米结构赤铁矿固定化的自然衰减。
Chemosphere. 2015 Nov;138:340-7. doi: 10.1016/j.chemosphere.2015.05.101. Epub 2015 Jun 27.
3
Iron insertion and hematite segregation on Fe-doped TiO2 nanoparticles obtained from sol-gel and hydrothermal methods.溶胶-凝胶法和水热法制备的掺铁 TiO2 纳米粒子中铁的插入和赤铁矿的分离。
ACS Appl Mater Interfaces. 2012 Oct 24;4(10):5555-61. doi: 10.1021/am301444k. Epub 2012 Oct 10.
4
Effects of Al(3+) doping on the structure and properties of goethite and its adsorption behavior towards phosphate.三价铝掺杂对针铁矿结构和性能的影响及其对磷酸盐的吸附行为。
J Environ Sci (China). 2016 Jul;45:18-27. doi: 10.1016/j.jes.2015.12.013. Epub 2016 Feb 1.
5
Interaction of aqueous Zn(II) with hematite nanoparticles and microparticles. Part 1. EXAFS study of Zn(II) adsorption and precipitation.水相锌（II）与赤铁矿纳米颗粒和微粒的相互作用。第1部分。锌（II）吸附与沉淀的扩展X射线吸收精细结构研究。
Langmuir. 2009 May 19;25(10):5574-85. doi: 10.1021/la8028947.
6
Comparison of hematite/Fe(II) systems with cement/Fe(II) systems in reductively dechlorinating trichloroethylene.赤铁矿/亚铁系统与水泥/亚铁系统在三氯乙烯还原脱氯方面的比较。
Chemosphere. 2008 Oct;73(5):813-9. doi: 10.1016/j.chemosphere.2008.04.092. Epub 2008 Jul 1.
7
Bicrystalline hematite nanowires.双晶赤铁矿纳米线。
J Phys Chem B. 2005 Jun 30;109(25):12245-9. doi: 10.1021/jp051197q.
8
Hematite (alpha-Fe2O3) with various morphologies: ionic liquid-assisted synthesis, formation mechanism, and properties.具有各种形态的赤铁矿（α-Fe2O3）：离子液体辅助合成、形成机制和性质。
ACS Nano. 2009 Nov 24;3(11):3749-61. doi: 10.1021/nn900941e.
9
On the orbital anisotropy in hematite nanorod-based photoanodes.基于赤铁矿纳米棒的光阳极中的轨道各向异性。
Phys Chem Chem Phys. 2013 Aug 28;15(32):13483-8. doi: 10.1039/c3cp52527a.
10
Connecting observations of hematite (alpha-Fe2O3) growth catalyzed by Fe(II).连接由 Fe(II) 催化的赤铁矿 (alpha-Fe2O3) 生长的观察结果。
Environ Sci Technol. 2010 Jan 1;44(1):61-7. doi: 10.1021/es901882a.

引用本文的文献

1
A promising natural material for pollutants removal.一种用于去除污染物的有前景的天然材料。
Sci Rep. 2025 Jul 1;15(1):21456. doi: 10.1038/s41598-025-07580-8.
2
Unexpected structural isomers of AlFeO and AlCoO : vibrational spectroscopy and ion mobility combined with quantum chemistry.AlFeO和AlCoO的意外结构异构体：振动光谱和离子迁移率与量子化学相结合
Chem Sci. 2025 May 19. doi: 10.1039/d5sc02681d.
3
Atomic insights into the mechanisms of Al or Cr affecting ferrihydrite nucleation.铝或铬影响水铁矿成核机制的原子层面见解。

本文引用的文献

1
Incorporation of Uranium into Hematite during crystallization from ferrihydrite.在由水铁矿结晶过程中铀掺入赤铁矿的情况。
Environ Sci Technol. 2014 Apr 1;48(7):3724-31. doi: 10.1021/es500212a. Epub 2014 Mar 18.
2
Inhibition of trace element release during Fe(II)-activated recrystallization of Al-, Cr-, and Sn-substituted goethite and hematite.在 Fe(II)激活的 Al、Cr 和 Sn 取代针铁矿和赤铁矿再结晶过程中抑制微量元素释放。
Environ Sci Technol. 2012 Sep 18;46(18):10031-9. doi: 10.1021/es302137d. Epub 2012 Sep 6.
3
Technetium incorporation into hematite (alpha-Fe2O3).
RSC Adv. 2023 Sep 7;13(38):26861-26868. doi: 10.1039/d3ra02945j. eCollection 2023 Sep 4.
4
Formation of polymorphs and pores in small nanocrystalline iron oxide particles.小纳米晶氧化铁颗粒中多晶型物和孔隙的形成。
Sci Rep. 2022 Sep 12;12(1):15291. doi: 10.1038/s41598-022-19276-4.
锝掺入赤铁矿（α-Fe2O3）。
Environ Sci Technol. 2010 Aug 1;44(15):5855-61. doi: 10.1021/es100069x.
4
Interaction of aqueous Zn(II) with hematite nanoparticles and microparticles. Part 1. EXAFS study of Zn(II) adsorption and precipitation.水相锌（II）与赤铁矿纳米颗粒和微粒的相互作用。第1部分。锌（II）吸附与沉淀的扩展X射线吸收精细结构研究。
Langmuir. 2009 May 19;25(10):5574-85. doi: 10.1021/la8028947.
5
ATHENA, ARTEMIS, HEPHAESTUS: data analysis for X-ray absorption spectroscopy using IFEFFIT.雅典娜、阿尔忒弥斯、赫菲斯托斯：使用IFEFFIT进行X射线吸收光谱的数据分析。
J Synchrotron Radiat. 2005 Jul;12(Pt 4):537-41. doi: 10.1107/S0909049505012719. Epub 2005 Jun 15.
6
Synthesis of Monodisperse Al-Substituted Hematite Particles from Highly Condensed Metal Hydroxide Gels.由高度凝聚的金属氢氧化物凝胶合成单分散铝取代赤铁矿颗粒
J Colloid Interface Sci. 2000 Nov 15;231(2):401-403. doi: 10.1006/jcis.2000.7142.
7
High-order multiple-scattering calculations of x-ray-absorption fine structure.X射线吸收精细结构的高阶多重散射计算
Phys Rev Lett. 1992 Dec 7;69(23):3397-3400. doi: 10.1103/PhysRevLett.69.3397.