Dynamic light scattering (DLS) measurement was performed on a Zetasizer (BIC Omni) to determine the zeta potential of synthesized GO in the solution. The surface morphology of the deposited sample was observed by scanning electron microscopy (SEM, MIRA3 TESCA). The X-ray photoelectron spectra (XPS) were obtained on Nexsa ThermoFisher scientific using a focused monochromatic aluminium Kα X-ray (1486.6 eV) source and a spherical section analyzer. The X-ray beam used was 150 W and the sample area was 300 μm × 700 μm. Wide-scan data were collected using a pass energy of 160 eV. The infrared spectrum was performed using iN10 MX (Thermo Fisher) and GO film was tested by ATR-FTIR (Zr single crystal). Raman spectrum was obtained with a confocal Raman microscope (Renishaw inVia Qontor, England). Materials were irradiated with light from a solid-state laser at 532 nm and the power of the excitation laser is 10 mW to avoid lase-induced heating. The surface roughness was measured by atomic force microscope (AFM, FastScan Bio Bruker America tip is AC240, 160). Contact angle test was performed by using diluted GO colloidal to detect the change of surface affinity by digital camera. Finally, the square resistance was measured by a multifunction digital four-probe tester (ST2258C, Suzhou Jingge, China). Detailed steps are listed in the ESI.†
In10 mx
Manufactured by Thermo Fisher Scientific
Sourced in United States
The IN10 MX is a compact infrared microscope designed for the analysis of small samples. It provides high-quality infrared spectroscopic imaging capabilities for a variety of applications.
Automatically generated - may contain errors
Lab products found in correlation
5 protocols using in10 mx
1
Characterization of Synthesized Graphene Oxide
2
FTIR Mapping of Organic Molecules
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FTIR measurements were carried out at the Institut de Physique du Globe de Paris, France with a Thermo Scientific iN10 MX® (Ever-Glo infrared source) equipped with a ×15 objective (NA = 0.7) and a liquid nitrogen cooled MCT-A detector in transmission and reflection mode. We acquired spectra in the range 4000–710 cm-1 by mapping over areas of several mm2 with individual spot sizes of 30×30 μm and steps of 30 μm. Each spectrum corresponded to 128 summed scans collected with a spectral resolution of 4 cm-1. The raw data was converted into–ASCII files with the Omnic Atlus® imaging software by Thermo ScientificTM and afterwards normalized and background-reduced using the ChemoSpec package for the software R [38 ].
The vibrational bands summarized inTable 1 were considered as indicative of bonds or functional groups in organic molecules, which potentially originate from biological material [39 ;40 (link)].
The vibrational bands summarized in
3
Quantifying PCBs in Microplastics
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Polyethylene (PE, green
fluorescent UVPMS-BG,
spherical, diameter 10–180 μm, density 0.94 kg/L)24 (link) was used in the bioassay. PE polymer identity
was confirmed by FTIR (ThermoFisher, iN10 MX). For microscope images
and particle size distributions of the PE the reader is referred to
the publication by Velzeboer et al.24 (link) Polyoxymethylene
sheets (POM, 76 μm thickness) were employed as passive samplers.23 (link),24 (link),29 (link) The selected PCB congeners were
28, 31, 44, 52, 101, 118, 138, 153, 170, and 180. Further details
are provided in theSupporting Information (SI) .
fluorescent UVPMS-BG,
spherical, diameter 10–180 μm, density 0.94 kg/L)24 (link) was used in the bioassay. PE polymer identity
was confirmed by FTIR (ThermoFisher, iN10 MX). For microscope images
and particle size distributions of the PE the reader is referred to
the publication by Velzeboer et al.24 (link) Polyoxymethylene
sheets (POM, 76 μm thickness) were employed as passive samplers.23 (link),24 (link),29 (link) The selected PCB congeners were
28, 31, 44, 52, 101, 118, 138, 153, 170, and 180. Further details
are provided in the
4
Spectroscopic Analysis of Compound 1
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The mid infrared spectral information of Compound 1 was collected by a microscopic imaging infrared spectrometer (iN10 MX, Thermo, USA) with the spectral range of 4000-450 cm−1. The spectral data of 1H-NMR, 13C-NMR, 1H-1H shift correlation spectroscopy (COSY), heteronuclear single quantum coherence (HSQC) and heteronuclear multiple bond connectivity (HMBC) were obtained by a 700MHz nuclear magnetic resonance spectrometer (AVANCE NEO, Bruker, Billerica, MA, USA) with the scanning range 1H: −1–13 ppm, 13C: −12–230 ppm.
5
FTIR Analysis of Avian Amyloid Fibrils
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A FTIR microscope iN10MX (Thermo Scientific, Waltham, MA, USA) was used for the analysis. Molecular structures were identified by infrared absorption bands. The spectra obtained from five analyzed areas (50 x 50 μm) of the AAF were compiled and compared with each other. The analyses were carried out at room temperature directly on the sample surface using the reflection technique at the spectral range 650–4000 cm-1 with a resolution of 4 cm-1.
The FTIR spectra of the AAF and egg white lysozyme (Fluka) were compared using a FTIR Nicolet 8700A spectrometer (Thermo Scientific, Waltham, MA, USA). The analyses were carried out at room temperature directly on the surface of the sample by ATR with a diamond crystal at a spectral range of 400–4000 cm-1 with a resolution of 4 cm-1.
The FTIR spectra of the AAF and egg white lysozyme (Fluka) were compared using a FTIR Nicolet 8700A spectrometer (Thermo Scientific, Waltham, MA, USA). The analyses were carried out at room temperature directly on the surface of the sample by ATR with a diamond crystal at a spectral range of 400–4000 cm-1 with a resolution of 4 cm-1.
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