Research Data supporting the work "Manipulating Morphology and Composition in Colloidal Heterometallic Nanopods and Nanodendrites"

Research data supporting the full paper entitled "Manipulating morphology and composition in colloidal heterometallic nanopods and nanodendrites " by Ming and Wheatley published in Nanoscale, 2023, DOI: 10.1039/d3nr00461a. A series of PtFe and PtNi nanoparticulate pseudospheres, nanopods and nanodendrites were prepared under a range of chemically reductive conditions. Products were analysed for composition, morphology and particle size. The following supporting data are deposited: For transmission electron microscopy (TEM) analysis, products dispersed in hexane were sonicated then drop-cast onto a lacey carbon 300 mesh copper grid (Agar Scientific). The grid was plasma cleaned using a Fischione Model 1070 Nanoclean. Analysis was performed using a Thermo Scientific (FEI) Talos F200X G2 TEM operating at 200 kV. Images were acquired using a Ceta 4k x 4k CMOS camera. Energy dispersive X-ray (EDX) analysis used scanning TEM (STEM) mode. Images were acquired with a high-angle annular dark field (HAADF) detector and EDX spectra/maps were collected using a Super-X detector system with 4 windowless silicon drift detectors. Inductively-coupled plasma-optical emission spectroscopy (ICP-OES) analysis for Fe and Pt was performed on a Thermo Fisher Scientific iCAP 7400 ICP-OES spectrometer against a standard curve (0.01-10 ppm). Standards were prepared by diluting a commercial ICP-OES standard (Sigma-Aldrich) with 2% HNO3. The standards used for the curve were 0.01, 0.05, 0.1, 0.5, 1, 2.5, 5, 7.5 and 10 ppm. Powder X-ray diffraction (XRD) patterns were measured on a PANalytical Empyrean diffractometer fitted with an X’celerator detector and a Cu-Kα1 (λ = 1.5406 Å) source, with a step size of 0.002° and scanning speed of 0.022° s−1 at 40 kV and 40 mA.