The morphology of the particles was observed under a Tecnai G2 20 S-TWIN transmission electron microscope (TEM; FEI, Hillsboro, USA), and the elements were assessed using an equipped energy dispersive X-ray spectrometer (EDX). The size distribution of hFe3O4 was determined from 103 particles randomly selected from the TEM images with ImageJ (Version 1.51s, National Institutes of Health, USA). The pore size of the as-synthesized nanoparticles was assessed from the nitrogen (N2) adsorption–desorption isotherms at around 77 K by using an ASAP 2020M system (Micromeritics, Norcross, GA, USA). The X-ray diffraction (XRD) patterns of the nanoparticles were measured with a Bruker D8 Advance X-ray diffractometer, and the data were retrieved from an X'Pert-Philips X-ray diffractometer having monochromatized CuKα radiation (1.5406 Å, 55 kV and 40 mA). The surface functional groups of the modified or GSH-treated nanoparticles were analyzed by using a Nicolet Magna 550 Series II Fourier transform infrared spectrometer (FT-IR, Nicolet Instrument, Madison, US), while the surface modification was examined by using a TGA-6 thermogravimetric analyzer (TGA; PerkinElmer, Waltham, USA). Elemental analyses (O, N, and S) were performed using X-ray photoelectron spectroscopy (XPS) by using an SKL-12 spectrometer modified with a VG CLAM 4 multichannel hemispherical analyzer.
Tga 6 thermogravimetric analyzer
Manufactured by PerkinElmer
Sourced in United States
The TGA 6 thermogravimetric analyzer is a laboratory instrument used to measure the change in mass of a sample as a function of temperature or time. It provides data on the thermal stability and composition of materials.
Automatically generated - may contain errors
Lab products found in correlation
Tecnai g2 20s twin transmission electron microscope, by Thermo Fisher Scientific (1 mentions)
D8 advance, by Bruker (1 mentions)
Asap 2020m system, by Micromeritics (1 mentions)
Titan g2 60 300 microscope, by Thermo Fisher Scientific (1 mentions)
Tecnai spirit microscope, by Thermo Fisher Scientific (1 mentions)
Iraffinity 1s spectrophotometer, by Shimadzu (1 mentions)
Ac 400 nmr spectrometer, by Bruker (1 mentions)
Qm4 spectrofluorometer, by Horiba (1 mentions)
Cary 100 scan uv vis spectrophotometer, by Agilent Technologies (1 mentions)
Autoflex, by Bruker (1 mentions)
3 protocols using tga 6 thermogravimetric analyzer
1
Comprehensive Nanoparticle Characterization
2
Characterization of NBP@TiO2 Nanostructures
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The transmission electron microscopy (TEM) images of the NBP@TiO2 nanostructures were captured on an FEI Tecnai Spirit microscope operated at 120 kV. High-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) characterization and elemental mapping were performed on an FEI Titan G2 60-300 microscope. The extinction spectra were measured on a Lambda 950 ultraviolet/visible/NIR spectrophotometer. The Au mass concentrations in the solution samples were measured on an Agilent 7500a inductively coupled plasma atomic emission spectrometry (ICP-AES) system. Fourier transform infrared spectroscopy (FTIR) analysis was performed on a Shimadzu IRAffinity-1S spectrophotometer. Thermogravimetric analysis (TGA) was carried out on a Perkin Elmer TGA 6 thermogravimetric analyzer, using a heating rate of 1 °C min−1. The hydrodynamic size of the CA4P-loaded NBP@TiO2 nanostructures was measured by a Malvern Zetasizer Nano ZS90 size analyzer.
3
Characterization of AuNC Nanoparticles
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High-resolution transmission electron microscopy (HRTEM) measurements were recorded on a JEOL 2010 transmission electron microscope (Tokyo, Japan) operating at an accelerating voltage of 200 kV. Proton nuclear magnetic resonance (1H NMR) spectra were performed on a Bruker AC 400 NMR spectrometer (Rheinstetten, Karlsruhe, Germany) in concentrated D2O solutions. At the same time, the fractions were investigated by a matrix-assisted laser desorption ionization time-of-flight mass spectrometer (MALDI-TOF MS) (Autoflex, Bruker, Germany). X-ray photoelectron spectroscopy (XPS) measurements were conducted with a Leybold Heraeus SKL-12 X-ray photoelectron spectrometer (Shenyang, China) modified with a VG CLAM 4 multichannel hemispherical analyzer using a Mg Kα excitation source at 1253.6 eV (10 kV, 20 mA). Thermogravimetric analysis (TGA) measurements were conducted with a Perkin-Elmer TGA 6 thermogravimetric analyzer (Waltham, MA, USA). In addition, the UV–vis absorption spectra of the crude AuNC product and the AuNC fractions were recorded on a Cary 100 Scan UV–vis spectrophotometer (Varian, Palo Alto, CA, USA). The PL properties of the samples were acquired on a QM4 spectrofluorometer (Photon Technology International, Lawrenceville, NJ, USA).
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