Chns 932 analyzer

The Pd_np-nSTDP catalyst was synthesized by our reported method.^{47 (link)} Melting points were determined with a Stuart Scientific SMP2 apparatus. FT-IR spectra were recorded on a Nicolet-Impact 400D spectrophotometer. ¹H and ¹³C NMR (400 and 100 MHz) spectra were recorded on a Bruker Avance 400 MHz spectrometer using CDCl₃ or DMSO-d₆ as solvent. Elemental analysis was done on a LECO, CHNS-932 analyzer. The microwave system used in these experiments includes the following items: Micro-SYNTH labstation, equipped with a glass door, a dual magnetron system with pyramid shaped diffuser, 1000 W delivered power, exhaust system, magnetic stirrer, ‘quality pressure’ sensor for flammable organic solvents, and a ATCFO fiber optic system for automatic temperature control.

A Shimadzu XRD-6000 diffractometer (Shimadzu Corporation, Tokyo, Japan) was used for X-ray diffraction (XRD) analysis. Radiation using CuK_α at 30 KV and 30 mA was set for recording XRD patterns in the 2θ range of 2°–60°. A Perkin Elmer (Waltham, MA, USA) 100 series Fourier transform infrared (FTIR) spectrophotometer was used for detecting functional groups in the range of 400–4,000 cm⁻¹ by a direct sample method. A LECO model CHNS-932 analyzer (Saint Joseph, MI, USA) was used for the analysis of carbon, hydrogen, nitrogen, and sulfur. The thermal stability of the samples was evaluated with a Mettler Toledo thermogravimetric differential analyzer (Greifensee, Switzerland). The surface morphology of the nanocomposites was analyzed using a JEOL JSM-6,400 field-emission scanning electron microscope (Tokyo, Japan). A Shimadzu 1,650 UV PC-UV/Vis spectrophotometer (Shimadzu Corporation) was used for controlled drug release analysis, a kinetic study, and percentage loading of the drug. An Optima 2,000 DV inductively coupled plasma optical emission spectrometer (Perkin Elmer) was used for the quantification of metallic elements, namely magnesium and aluminum.

Melting points were determined using a Stuart Scientific SMP2 apparatus. ¹H and ¹³C (400 and 100 MHz) spectra were recorded in CDCl₃ solvent on a Bruker-Avance 400 spectrometer. Elemental analyses were done on a LECO, CHNS-932 analyzer. Thermogravimetric analyses (TGA) were carried out on a Mettler TG50 instrument under air flow at a uniform heating rate of 5 °C min⁻¹ in the range of 30–600 °C. The UV-vis diffuse reflectance spectra of the samples were recorded by a JASCO V-670 spectrophotometer. The X-ray photoelectron spectroscopy (XPS) measurements were performed using a Gammadata-Scienta ESCA200 hemispherical analyzer equipped with an Al (K = 1486.6 eV) X-ray source. The Pt content of the catalyst was measured by an inductively coupled plasma optical emission spectrometry (ICP-OES), using a Jarrell-Ash 1100 ICP analyzer. Scanning electron microscopy measurements were performed on a Hitachi S-4700 field emission-scanning electron microscope (FE-SEM). Transmission electron microscopy (TEM) was carried out on a Philips CM10 analyzer operating at 100 kV.

An assessment of X-ray diffraction was applied on a Bruker D8-advance in the range of 10–80° with monochromatic CuKα1 radiation (0.15406 nm). The LECO CHNS-932 analyzer was used for elemental analysis [10 (link)].