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

页码：8032 / 8036

页数：5

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