Structural characterisation of a layered double hydroxide nanosheet

被引：37
|
作者：
Funnell, Nicholas P. [1 ]
Wang, Qiang [1 ,2 ]
Connor, Leigh [3 ]
Tucker, Matthew G. [3 ,4 ]
O'Hare, Dermot [1 ]
Goodwin, Andrew L. [1 ]
机构：
[1] Univ Oxford, Dept Chem, Inorgan Chem Lab, Oxford OX1 3QR, England
[2] Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China
[3] Diamond Light Source, Didcot OX11 0QX, Oxon, England
[4] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England
来源：
NANOSCALE | 2014年 / 6卷 / 14期
基金：
英国工程与自然科学研究理事会;
关键词：
PAIR DISTRIBUTION FUNCTION; REVERSE MONTE-CARLO; TOTAL SCATTERING; INTERCALATION; GRAPHENE; OXIDE;
D O I：
10.1039/c4nr01265h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report the atomic-scale structure of a Zn2Al-borate layered double hydroxide (LDH) nanosheet, as determined by reverse Monte Carlo (RMC) modelling of X-ray total scattering data. This study involves the extension of the RMC method to enable structural refinement of two-dimensional nanomaterials. The refined LDH models show the intra-layer geometry in this highly-exfoliated phase to be consistent with that observed in crystalline analogues, with the reciprocal-space scattering data suggesting a disordered arrangement of the Zn2+ and Al3+ cations within the nanosheet. The approach we develop is generalisable and so offers a method of characterising the structures of arbitrary nanosheet phases, including systems that support complex forms of disorder within the nanosheets themselves.
引用
收藏
页码：8032 / 8036
页数：5
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