Trapping shape-controlled nanoparticle nucleation and growth stages via continuous-flow chemistry

Alec P LaGrow; Tabot M D Besong; Noktan M AlYami; Khabiboulakh Katsiev; Dalaver H Anjum; Ahmed Abdelkader; Pedro M F J Costa; Victor M Burlakov; Alain Goriely; Osman M Bakr

doi:10.1039/c6cc08369b

Trapping shape-controlled nanoparticle nucleation and growth stages via continuous-flow chemistry

Chem Commun (Camb). 2017 Feb 21;53(16):2495-2498. doi: 10.1039/c6cc08369b.

Affiliations

¹ King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering (PSE), Thuwal 23955-6900, Saudi Arabia. osman.bakr@kaust.edu.sa and York Nanocentre, University of York, Heslington, York YO10 5DD, UK. alec.lagrow@york.ac.uk.
² King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering (PSE), Thuwal 23955-6900, Saudi Arabia. osman.bakr@kaust.edu.sa.
³ King Abdullah University of Science and Technology (KAUST), SABIC Corporate Research and Innovation Center, Thuwal, 23955-6900, Saudi Arabia.
⁴ King Abdullah University of Science and Technology (KAUST), Imaging and Characterization Lab, Thuwal 23955-6900, Saudi Arabia.
⁵ Mathematical Institute, University of Oxford, Oxford, OX2 6GG, UK.

PMID: 28184392
DOI: 10.1039/c6cc08369b

Abstract

Continuous flow chemistry is used to trap the nucleation and growth stages of platinum-nickel nano-octahedra with second time resolution and high throughputs to probe their properties ex situ. The growth starts from poorly crystalline particles (nucleation) at 5 seconds, to crystalline 1.5 nm particles bounded by the {111}-facets at 7.5 seconds, followed by truncation and further growth to octahedral nanoparticles at 20 seconds.