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Watching Mesoporous Metal Films Grow During Templated Electrodeposition with In Situ SAXS

DOI: 10.1039/C7NR03321D DOI Help

Authors: Samuel J. Richardson (University of Reading) , Matthew R. Burton (University of Southampton) , Xiatong Luo (University of Reading) , Paul A. Staniec (Diamond Light Source) , Iris S. Nandhakumar (University of Southampton) , Nick J. Terrill (Diamond Light Source) , Joanne M. Elliott (University of Reading) , Adam M. Squires (University of Reading)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Nanoscale

State: Published (Approved)
Published: June 2017
Diamond Proposal Number(s): 10330

Abstract: In this paper, we monitor real-time growth of mesoporous platinum during electrodeposition using small-angle X-ray scattering (SAXS). Previously we have demonstrated that platinum films featuring ‘single diamond’ (Fd3m) morphology can be produced from ‘double diamond’ (Pn3m) lipid cubic phase templates; the difference in symmetry provides additional scattering signals unique to the metal. Taking advantage of this, we present simultaneous in situ SAXS / electrochemical measurement as the platinum nanostructures grow within the lipid template. This measurement allows us to correlate the nanostructure appearance with the deposition current density and to monitor the evolution of orientational and lateral ordering of the lipid and platinum during deposition and after template removal. In other periodic metal nanomaterials deposited within any of the normal topology liquid crystal, mesoporous silica or block copolymer templates previously published, the template and emerging metal have the same symmetry, so such a study has not previously been possible.

Subject Areas: Chemistry, Materials

Instruments: I07-Surface & interface diffraction