D2 phaser instrument

Measurements were performed on a Bruker D2Phaser instrument using CuKα radiation (λ = 1.54178 Å).

Samples were prepared using spark plasma sintering39 40 41 42 , described previously34 35 . Briefly, the samples were prepared by consolidating SAM2X5 metallic glass powders inside a graphite die that produces cylindrical samples with diameters of 19 mm. The model for the spark plasma sintering unit is the HP D25 from FCT Systeme. Sample SAM2X5-600 was heated to a temperature of 873 K (600 °C) with no hold time at temperature. Sample SAM2X5-630 was heated to a temperature of 903 K (630 °C) with no hold time at temperature. The heating rate from room temperature to the sintering temperature was 500 K/min for both types of samples.
All BMG samples were characterized for density using the Archimedean method using an Ohaus Solids Density Determination Kit, Vickers hardness on a Leco LM100 system using a 300 gram-force held for 10 seconds, X-ray diffraction on a Bruker D2 Phaser instrument using Cu Kα radiation, and longitudinal and shear sound speed measurements using ultrasonic transducers and the pulse-echo technique using an Olympus 38DI Plus Ultrasonic Thickness Gauge.

A sonication bath (Digital Ultrasonic Cleaner PS-10A, Meizhou, China) was used during the development process. A Benchmark “my Fuge” mini centrifuge (Benchmark Scientific, Sayreville, NJ, USA). HPLC analysis was performed using an Agilent 1100 Liquid Chromatography series equipped with a quaternary pump (G1311A), degasser (G1322A), diode array detector (G1315B) and manual injector (G1328B) with a Phenomenex^® Kinetex^® column (2.6 μm C18, 100 Å, 150 × 4.6 mm i.d.). Samples were freeze-dried using a LABCONCO FreeZone^® 6 Liter Benchtop Freeze-Dry system (Kansas City, MO, USA). A PerkinElmer Spectrum 100 FT-IR Spectrometer was used to record IR spectra and a TA DSC 250 instrument was used for thermal analysis. The material crystallinity was assessed using an XRD D8 Discover or D2 Phaser Instrument (Bruker, Billerica, MA, USA). A Zetasizer nano ZEN–3600 MAL1043132 from Malvern Instruments (Malvern, UK) was used to determine the particle size, polydispersity index and zeta potential of the materials. Particles’ shape was analyzed using a Zeiss Libra-120KV TEM instrument (Oberkochen, Germany). The elemental composition of the developed materials was evaluated by using an INCA PENTA FET coupled to VAGA TESCAM energy-dispersive X-ray spectroscopy (Brno, Czech Republic).

The IL
loading in the composite was determined by a measurement for which
the IL/MOF composite was washed with acetone solvent to extract all
the IL present in the composite. The infrared (IR) analysis of the
composite was performed before and after washing the sample with acetone.
The washed [MPPyr][DCA]/MIL-101(Cr) composite was then dried in an
oven at 65 °C and weighed, and IL loading was determined. X-ray
diffraction (XRD) analysis of the as-received MIL-101(Cr) and its
composite with [MPPyr][DCA] was performed on a Bruker D2 Phaser instrument.
IR spectra of the samples were collected in transmittance mode at
a spectral resolution of 2 cm^–1 in the range of
400 to 4000 cm^–1 using a Bruker Vertex 80v spectrometer.
IR peaks were deconvoluted by employing Fityk software using the Voigt
function.^{37 (link)} N₂ adsorption isotherms
were measured at −196 °C, from 10^–6 to
1 bar, by using a Micromeritics ASAP 2020 accelerated surface area
and porosity analyzer. Prior to these measurements, the as-received
MIL-101(Cr) and its composite with [MPPyr][DCA] were degassed at 150
°C under vacuum for 12 h. Scanning electron microscopy (SEM)
images of the samples were obtained by using a Zeiss Evo LS 15 electron
microscope. Thermogravimetric analysis (TGA) was done on a TA Instruments
Q500 analyzer. The details of these measurements can be found in our
previous report.^{38 (link)}