For optical characterization, UV–visible spectrophotometer (UV-1800, Shimadzu, Japan) was used. X-ray diffraction (XRD) analysis was conducted to determine the AgNPs' crystalline phase using Rigaku Ultima IV diffractometer with Cu-Kα (λ = 1.5406 Å) radiation at 0.2 min−1. Fourier Transform Infrared Spectrophotometer (FTIR) spectra were measured as KBr discs on an IR Prestige (Shimadzu) spectrometer to identify the presence of the functional group. Using Scanning Electron Microscope (SEM) (JSM-6490 L A), the surface morphology of AgNPs was investigated, while the average particle size and distribution were determined by Transmission Electron Microscope (TEM) (FEI, Bellaterra Spain). To check the elemental composition, the Energy-dispersive X-ray (EDX) was employed using a BRUKER system attached to the SEM.
Ir prestige
Manufactured by Shimadzu
The Shimadzu IR Prestige is a Fourier Transform Infrared (FTIR) spectrometer. It is designed to analyze the molecular composition and structure of a wide range of samples by measuring their infrared absorption spectrum.
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6 protocols using ir prestige
1
Physicochemical Characterization of Silver Nanoparticles
2
FTIR Analysis of Cadmium Adsorption
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The FTIR study was intended to provide a deeper insight into the interaction between the surface functional groups of the biosorbent and the cadmium ions. The biomass was first dried prior and after adsorption using a lyophilizator (Denmark) and was grounded into fine particles using mortar and pestle. Each sample was then mixed with potassium bromide (1 mg in 100 mg of KBr), compressed into a 0.25-mm thickness disk and stabilized under controlled relative humidity before acquiring the spectrum. The FTIR spectrophotometer (Bruker-Vector22) used to record spectra was a Shimadzu IRPrestige in the wave number range of 400 to 4,000 cm−1.
3
Characterization of Biogenic Silver Nanoparticles
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The absorption spectra of the prepared
nanoparticles mixture were
recorded by a PerkinElmer UV–visible spectrometer at regular
intervals by scanning the reacting mixture from 200 to 800 nm. The
Rigaku Ultima-III X-ray diffractometer was used to analyze the crystalline
nature of dried biogenic Ag nanoparticles. An IR-Prestige (Shimadzu)
Fourier transform infrared (FTIR) spectrometer was used to record
the FTIR spectra of biogenic Ag nanoparticles. For the transmission
electron microscopy (TEM) analysis, high-resolution JEOL-2010 TEM
(operating voltage is 200 kV) was used. The zeta potential of AgNPs
was recorded using water as a solvent and Zetasizer Nano S90 (Malvern)
at room temperature.
nanoparticles mixture were
recorded by a PerkinElmer UV–visible spectrometer at regular
intervals by scanning the reacting mixture from 200 to 800 nm. The
Rigaku Ultima-III X-ray diffractometer was used to analyze the crystalline
nature of dried biogenic Ag nanoparticles. An IR-Prestige (Shimadzu)
Fourier transform infrared (FTIR) spectrometer was used to record
the FTIR spectra of biogenic Ag nanoparticles. For the transmission
electron microscopy (TEM) analysis, high-resolution JEOL-2010 TEM
(operating voltage is 200 kV) was used. The zeta potential of AgNPs
was recorded using water as a solvent and Zetasizer Nano S90 (Malvern)
at room temperature.
4
Characterization of Babassu Mesocarp Microparticles
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The microparticles were reconstituted in double-distilled water for the measurement of the mean particle size by dynamic light scattering technique (DLS) and the zeta potential (Zeta Sizer Nano ZS-Malvern Instruments, UK). Data represented as mean size of multiple runs (n= 5).
For elementary analysis, the microparticles were visualized and images were acquired with an Inspect S50-FEI scanning electron microscope equipped with an energy-dispersive X-ray spectrometer (EDX). Briefly, MMP and CMP suspension samples were placed on a mesh carbon grid for microscope observation.
Fourier transform infrared (FTIR) spectroscopy was used to analyze the possible interactions between the mesocarp with the PLGA copolymer used in the microparticles. Briefly, samples of CMP, MMP, and Meso (free babassu mesocarp aqueous extract) were mixed with potassium bromide (1:100-KBr) discs and the spectra were obtained with an FTIR spectrophotometer (Shimadzu, IR-Prestige) in the wavelength range of 4000-400 cm−1.
For elementary analysis, the microparticles were visualized and images were acquired with an Inspect S50-FEI scanning electron microscope equipped with an energy-dispersive X-ray spectrometer (EDX). Briefly, MMP and CMP suspension samples were placed on a mesh carbon grid for microscope observation.
Fourier transform infrared (FTIR) spectroscopy was used to analyze the possible interactions between the mesocarp with the PLGA copolymer used in the microparticles. Briefly, samples of CMP, MMP, and Meso (free babassu mesocarp aqueous extract) were mixed with potassium bromide (1:100-KBr) discs and the spectra were obtained with an FTIR spectrophotometer (Shimadzu, IR-Prestige) in the wavelength range of 4000-400 cm−1.
5
Characterization of Synthesized Particles
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The synthesized
particles were characterized by Fourier transform infrared spectroscopy
(FTIR, IR Prestige, Shimadzu), ultraviolet-visible (UV–vis)
spectroscopy (JASCO V650), and transmission electron microscopy (TEM,
JEM2100, JEOL). The photoluminescence property was measured using
Model FL3-11, Horiba JobinYvon, Fluorolog-3, Nanolog. Time-correlated
single-photon counting (TCSPC) was done using the IBH fluorocube apparatus.
Decay profiles were collected using a Hamamatsu MCP photomultiplier
(R3809) with IBH DAS6 software. For TEM analysis, 5 mg of the sample
was dispersed into absolute ethanol for 5 min under sonication; this
was followed by the coating of the sample on a copper grid followed
by drying in air before analysis. For FTIR and TCSPC, a powder sample
was applied.
particles were characterized by Fourier transform infrared spectroscopy
(FTIR, IR Prestige, Shimadzu), ultraviolet-visible (UV–vis)
spectroscopy (JASCO V650), and transmission electron microscopy (TEM,
JEM2100, JEOL). The photoluminescence property was measured using
Model FL3-11, Horiba JobinYvon, Fluorolog-3, Nanolog. Time-correlated
single-photon counting (TCSPC) was done using the IBH fluorocube apparatus.
Decay profiles were collected using a Hamamatsu MCP photomultiplier
(R3809) with IBH DAS6 software. For TEM analysis, 5 mg of the sample
was dispersed into absolute ethanol for 5 min under sonication; this
was followed by the coating of the sample on a copper grid followed
by drying in air before analysis. For FTIR and TCSPC, a powder sample
was applied.
6
FT-IR Analysis of Samples
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FT-IR spectra were measured using a spectrometer Shimadzu IR Prestige with KBr pellets. The scans were acquired at a resolution of 4.0 cm−1 (from 450 to 4000 cm−1).
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