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Structural characterisation of a layered double hydroxide nanosheet

DOI: 10.1039/c4nr01265h DOI Help

Authors: Nicholas Funnell (University of Oxford) , Qiang Wang (University of Oxford) , Leigh Connor (Diamond Light Source) , Matthew G. Tucker (Diamond Light Source) , D O'hare (University of Oxford) , Andrew Goodwin (University of Oxford)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Nanoscale , VOL 6 (14)

State: Published (Approved)
Published: May 2014

Open Access Open Access

Abstract: 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.

Subject Areas: Chemistry

Instruments: I12-JEEP: Joint Engineering, Environmental and Processing

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