The crystalline structures of the g-C3N4/UiO-66-NH2/CdS photocatalysts were assessed by XRD using a Bruker D8-ADVANCE (Bruker AXS, Karlsruhe, Germany) with Cu Kα radiation over the 2θ range of 5–60°. FTIR spectra (KBr pellets as substrate) were recorded on a Nicolet 5700 spectrophotometer (Thermo Fisher Scientific, Waltham, MA, USA) in the range from 4000 to 400 cm−1. The morphologies of the photocatalysts were examined by TEM and SEM using a Tecnai G2 F20 S-TWIN (FEI, Hillsboro, OR, USA) and Sirion 200 (FEI, Hillsboro, OR, USA). Photoluminescence (PL) spectra were acquired using a fluorescence spectrophotometer (F-380, Hitachi, Tokyo, Japan). Ultraviolet-visible (UV-Vis) absorption spectroscopy and diffuse reflectance spectroscopy (DRS) were performed using a spectrophotometer (UV-3600, Shimadzu, Kyoto, Japan) over the range of 200–800 nm. An ESCALAB 250XI (Thermo Fisher Scientific, Waltham, MA, USA) with a He I (21.22 eV) lamp was employed to perform UV photoelectron spectroscopy (UPS) to ascertain the valence band positions and work functions of the samples. Electrochemical impedance spectroscopy (EIS) was conducted with an electrochemical workstation (CHI 760E, CH Instruments, Shanghai, China) using a standard three-electrode system. The pH values of the various samples were determined using a pH meter.
Nicolet 5700 spectrophotometer
Manufactured by Thermo Fisher Scientific
Sourced in United States
The Nicolet 5700 spectrophotometer is a laboratory instrument designed for absorption and transmission measurement in the mid-infrared spectral region. It is capable of analyzing a wide range of sample types and can be used for various applications in materials science, chemical analysis, and other research fields.
Automatically generated - may contain errors
Lab products found in correlation
Uv 3600, by Shimadzu (2 mentions)
Tecnai g2 f20 s twin, by Thermo Fisher Scientific (2 mentions)
Sirion 200, by Thermo Fisher Scientific (2 mentions)
Model 1515, by Waters Corporation (2 mentions)
Escalab 250xi, by Thermo Fisher Scientific (2 mentions)
D8 advance, by Bruker (2 mentions)
Chi760e, by CH Instruments (1 mentions)
Zetasizer nano zsp system, by Malvern Panalytical (1 mentions)
Talos f200, by Thermo Fisher Scientific (1 mentions)
Sta 449f3 thermogravimetric analyzer, by Netzsch (1 mentions)
Jsm 7001f, by JEOL (1 mentions)
Zetasizer nano z, by Malvern Panalytical (1 mentions)
Jem 2100, by JEOL (1 mentions)
Peakfit 4, by IBM (1 mentions)
Zetasizer instrument, by Malvern Panalytical (1 mentions)
Nicolet 5700, by Thermo Fisher Scientific (1 mentions)
Tg dta 8122, by Rigaku (1 mentions)
Av 400 spectrometer, by Bruker (1 mentions)
11 protocols using nicolet 5700 spectrophotometer
1
Structural Characterization of g-C3N4/UiO-66-NH2/CdS Photocatalysts
2
Characterization of Hybrid Nanomaterials
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Transmission electron microscopy (TEM; Talos F200S, Thermo Scientific, USA) was employed to determine the morphology and ultrastructure of HMS, PA@HMS, and E/PA@HMS. Scanning TEM equipped with energy dispersive spectroscopy (EDS) was used to examine the mapping patterns of elements. The crystallinity was identified by selected area electron diffraction (SAED). X-ray diffraction (XRD) analysis with small-angle and wide-angle patterns was performed using a PANalytical Empyrean diffractometer (the Netherlands). A Nicolet5700 spectrophotometer (Thermo Scientific, USA) with Fourier transform-infrared spectroscopy (FTIR) was conducted to detect typical functional groups. The pore size distribution and surface area calculated by the Brunauer–Emmett–Teller and Barrett–Joyner–Halenda (BET/BJH) methods were measured using an ASAP2020 analyzer (Micromeritics Corp., USA) with nitrogen adsorption–desorption. A Zetasizer Nano ZSP system (Malvern Instruments, UK) was used to monitor the size distribution and zeta potential. The loading efficiency was inspected using a STA449F3 thermogravimetric analyzer (NETZSCH, Germany) under an N2 environment at a heating rate of 10 °C/min by thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG).
3
Characterization of UCNP Hydrogel
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The morphological structure of UCNPs was studied by JEM-2100 transmission electron microscopy (TEM; JEOL, Tokyo, Japan). The particle size of UCNPs was detected by dynamic light-scattering assay with a Malvern Zetasizer NanoZS instrument. The morphological structure of UCNP/Chitosan/β-GP hydrogel was studied by JSM-7001F scanning electron microscopy (SEM; JEOL, Tokyo, Japan). Fourier transform infrared spectroscopy (FTIR) analysis was performed to analyze the intermolecular interactions among various components of UCNP/Chitosan/β-GP hydrogel with a scan range from 4000 to 650 cm−1 on a Nicolet 5700 spectrophotometer (Thermo Fisher Scientific, Waltham, MA, USA).
4
Characterization of Silk/Quantum Dot Hydrogels
5
FT-IR Analysis of Loaded Gelatins
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FT-IR analyses of loaded and unloaded gelatins HGel-B and HGel-C were done in the Attenuated Total Reflectance (ATR) mode using a Thermo Fisher Nicolet 5700 spectrophotometer equipped with a Smart Performer accessory (Rodano, Italy) mounting a ZnSe crystal for the analysis of solid samples.
6
Polymer Characterization by GPC, FT-IR, and NMR
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Gel permeation chromatography (GPC) (Waters Model 1515) was used to estimate the weight-average molecular weight (Mw) of the produced PPD. Tetrahydrofuran (THF) was used as the mobile phase at a flow rate of 1 mL/min and a temperature of 30 °C. Polystyrene was used as the standard. The Fourier transform infrared spectrometry (FT-IR) analyses were measured on a Nicolet 5700 spectrophotometer (Nicolet, Thermo Fisher, Waltham, MA, USA) in the range 400–4000 cm−1. 1H NMR and 13C NMR spectra were recorded on a 400 MHz (Bruker, Germany) instrument, and CDCl3 (7.26 ppm for 1H NMR, 77.16 ppm for 13C NMR) was used as a reference (Supplementary Materials ).
7
FTIR analysis of ion-exchange structures
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FTIR-spectra of the initial ion-exchange structures and the interpolymer system was obtained with using a NICOLET 5700 spectrophotometer (Thermo Fischer scientific, Waltham, MA, USA).
8
Polymer Characterization by GPC, FT-IR, and NMR
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Gel permeation chromatography (GPC) (Waters Model 1515) was used to estimate the weight-average molecular weight (Mw) of the produced PPD. Tetrahydrofuran (THF) was used as the mobile phase at a flow rate of 1 mL/min and a temperature of 30 °C. Polystyrene was used as the standard. The Fourier transform infrared spectrometry (FT-IR) analyses were measured on a Nicolet 5700 spectrophotometer (Nicolet, Thermo Fisher, Waltham, MA, USA) in the range 400–4000 cm−1. 1H NMR and 13C NMR spectra were recorded on a 400 MHz (Bruker, Germany) instrument, and CDCl3 (7.26 ppm for 1H NMR, 77.16 ppm for 13C NMR) was used as a reference (Supplementary Materials ).
9
Structural and Adsorptive Properties of ZIF-8-Loaded UiO-66-NH2
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Crystalline structures of ZIF-8-loaded UiO-66-NH2 and UiO-66-NH2 were examined by XRD using Bruker D8-ADVANCE (Bruker AXS, Karlsruhe, Germany) with Cu Kα radiation in the angular range, 2θ = 5–50°. FTIR spectrum (KBr pellets as substrate) were recorded on Nicolet 5700 spectrophotometer (Thermo Fisher Scientific, Waltham, MA, USA) in the range from 4000 to 400 cm−1. The morphology of the nanoparticles was measured on SEM, (Sirion 200, FEI, Hillsboro, OR, USA) and TEM (Tecnai G2 F20 S-TWIN, FEI, Hillsboro, OR, USA). N2 adsorption/desorption isotherms of the synthesized adsorbents was performed at 77 K with Quantachrome AUTOSORB IQ (Quantachrome, FL, USA). Zeta potential analysis of the synthesized adsorbents was performed at 25 °C with Malvern Zetasizer instrument (Nano ZS 90new, Malvern Panalytical, Malvern, UK). UV-Vis absorption spectra were measured on a UV-Vis spectrophotometer (UV-3600, Shimadzu, Kyoto, Japan) in the range from 800 to 200 nm. The pH values were detected by pH meter.
10
FTIR Analysis of Starch Samples
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The method of Sun et al. was employed for Fourier transform infrared spectra (FTIR) analysis [15 (link)]. In brief, KBr (150 mg) was added to 2 mg of each starch sample, and each sample was mixed and pressed to form thin slices. FTIR spectrometry was determined using Nicolet5700 spectrophotometer (Thermo Fisher Nicolet 5700, Waltham, MA, USA), scanning the whole spectrum (4000–500 cm−1). Three repetitions were carried out for each sample.
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