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thin film x ray diffractometer  (Bruker Corporation)


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    Bruker Corporation thin film x ray diffractometer
    a Surface charge density of GO and MXene flakes at different pH, calculated using potentiometric titration. b Schematic diagram of the pH-programmed self-assembly process, where uncharged protonated flakes (gray) deposit first, followed by charged deprotonated flakes (brown). c Thermal actuation performance of GO and MXene at 100 °C. The actuators prepared at different pH. <t>d</t> <t>X-ray</t> photoelectron spectroscopy (XPS) of O1s analysis of GO membranes. The O1s spectrum further supports these observations. At pH2, the relative atomic concentrations of the functional groups are as follows: -OH (2.37 at%), C-O (55.18 at%), C=O (42.45 at%). At pH6, the concentrations are -OH (16.45 at%), C-O (66.55 at%), 531.03 eV C = O (16.99 at%). At pH10, the concentrations are C=O (44.28 at%), C-O (53.47 at%) and -OH (2.25 at%). e XPS of O1s analysis of MXene membranes. At pH2, the relative atomic concentrations of the functional groups are as follows: C-Ti-OH (38.45 at%), C-Ti-O (39.65 at.%), Ti-O (21.90 at%). At pH 6, the concentrations are C-Ti-OH (35.85 at%), C-Ti-O (39.92 at%), Ti-O (24.23 at%). At pH 10, the concentrations are Ti-H 2 O (2.57 at%), C-Ti-OH (32.10 at%), C-Ti-O (41.18 at%), Ti-O (24.15 at%). f Differential FTIR spectra of GO and MXene membranes at various pH, highlighting the C=O band at 1600–1700 cm −1 . The set-up for in-situ FTIR experiments before and after infrared irradiation is shown in Supplementary Fig. . The spectra were obtained by subtracting the room-temperature data from those after 3 min of infrared light irradiation. After infrared irradiation, a decrease in C=O band intensity is observed. Additionally, pH-dependent peak shifts are evident: under acidic conditions (pH 2), the C=O peak exhibits a red shift compared to alkaline conditions (pH 10), indicating protonation of carbonyl groups. g Thermal actuating performance of pH-programmed GO and MXene multilayers with different pH. The pH 2 GO membrane remains thermally unresponsive, while the pH 6 membrane exhibits the largest curvature. The pH 10 membrane bends under heating, but with a smaller curvature compared to pH 6, reflecting reduced thermal asymmetry. Actuator dimensions: 4 ×20 mm. Source data are provided as a file.
    Thin Film X Ray Diffractometer, supplied by Bruker Corporation, used in various techniques. Bioz Stars score: 99/100, based on 181609 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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    Images

    1) Product Images from "Protonation and deprotonation of edges in graphene oxide and MXenes as a driving force for actuation in responsive 2D membranes"

    Article Title: Protonation and deprotonation of edges in graphene oxide and MXenes as a driving force for actuation in responsive 2D membranes

    Journal: Nature Communications

    doi: 10.1038/s41467-025-63800-9

    a Surface charge density of GO and MXene flakes at different pH, calculated using potentiometric titration. b Schematic diagram of the pH-programmed self-assembly process, where uncharged protonated flakes (gray) deposit first, followed by charged deprotonated flakes (brown). c Thermal actuation performance of GO and MXene at 100 °C. The actuators prepared at different pH. d X-ray photoelectron spectroscopy (XPS) of O1s analysis of GO membranes. The O1s spectrum further supports these observations. At pH2, the relative atomic concentrations of the functional groups are as follows: -OH (2.37 at%), C-O (55.18 at%), C=O (42.45 at%). At pH6, the concentrations are -OH (16.45 at%), C-O (66.55 at%), 531.03 eV C = O (16.99 at%). At pH10, the concentrations are C=O (44.28 at%), C-O (53.47 at%) and -OH (2.25 at%). e XPS of O1s analysis of MXene membranes. At pH2, the relative atomic concentrations of the functional groups are as follows: C-Ti-OH (38.45 at%), C-Ti-O (39.65 at.%), Ti-O (21.90 at%). At pH 6, the concentrations are C-Ti-OH (35.85 at%), C-Ti-O (39.92 at%), Ti-O (24.23 at%). At pH 10, the concentrations are Ti-H 2 O (2.57 at%), C-Ti-OH (32.10 at%), C-Ti-O (41.18 at%), Ti-O (24.15 at%). f Differential FTIR spectra of GO and MXene membranes at various pH, highlighting the C=O band at 1600–1700 cm −1 . The set-up for in-situ FTIR experiments before and after infrared irradiation is shown in Supplementary Fig. . The spectra were obtained by subtracting the room-temperature data from those after 3 min of infrared light irradiation. After infrared irradiation, a decrease in C=O band intensity is observed. Additionally, pH-dependent peak shifts are evident: under acidic conditions (pH 2), the C=O peak exhibits a red shift compared to alkaline conditions (pH 10), indicating protonation of carbonyl groups. g Thermal actuating performance of pH-programmed GO and MXene multilayers with different pH. The pH 2 GO membrane remains thermally unresponsive, while the pH 6 membrane exhibits the largest curvature. The pH 10 membrane bends under heating, but with a smaller curvature compared to pH 6, reflecting reduced thermal asymmetry. Actuator dimensions: 4 ×20 mm. Source data are provided as a file.
    Figure Legend Snippet: a Surface charge density of GO and MXene flakes at different pH, calculated using potentiometric titration. b Schematic diagram of the pH-programmed self-assembly process, where uncharged protonated flakes (gray) deposit first, followed by charged deprotonated flakes (brown). c Thermal actuation performance of GO and MXene at 100 °C. The actuators prepared at different pH. d X-ray photoelectron spectroscopy (XPS) of O1s analysis of GO membranes. The O1s spectrum further supports these observations. At pH2, the relative atomic concentrations of the functional groups are as follows: -OH (2.37 at%), C-O (55.18 at%), C=O (42.45 at%). At pH6, the concentrations are -OH (16.45 at%), C-O (66.55 at%), 531.03 eV C = O (16.99 at%). At pH10, the concentrations are C=O (44.28 at%), C-O (53.47 at%) and -OH (2.25 at%). e XPS of O1s analysis of MXene membranes. At pH2, the relative atomic concentrations of the functional groups are as follows: C-Ti-OH (38.45 at%), C-Ti-O (39.65 at.%), Ti-O (21.90 at%). At pH 6, the concentrations are C-Ti-OH (35.85 at%), C-Ti-O (39.92 at%), Ti-O (24.23 at%). At pH 10, the concentrations are Ti-H 2 O (2.57 at%), C-Ti-OH (32.10 at%), C-Ti-O (41.18 at%), Ti-O (24.15 at%). f Differential FTIR spectra of GO and MXene membranes at various pH, highlighting the C=O band at 1600–1700 cm −1 . The set-up for in-situ FTIR experiments before and after infrared irradiation is shown in Supplementary Fig. . The spectra were obtained by subtracting the room-temperature data from those after 3 min of infrared light irradiation. After infrared irradiation, a decrease in C=O band intensity is observed. Additionally, pH-dependent peak shifts are evident: under acidic conditions (pH 2), the C=O peak exhibits a red shift compared to alkaline conditions (pH 10), indicating protonation of carbonyl groups. g Thermal actuating performance of pH-programmed GO and MXene multilayers with different pH. The pH 2 GO membrane remains thermally unresponsive, while the pH 6 membrane exhibits the largest curvature. The pH 10 membrane bends under heating, but with a smaller curvature compared to pH 6, reflecting reduced thermal asymmetry. Actuator dimensions: 4 ×20 mm. Source data are provided as a file.

    Techniques Used: Titration, Spectroscopy, Functional Assay, In Situ, Irradiation, Membrane

    Related Articles

    other:

    Article Title: Deposition order dependent magnetization reversal in pressure graded Co/Pd films
    Article Snippet: Downloaded to IP: 139.184.14.159 On: Thu, 20 Aug 2015 19:14:14 arrive at the substrate with sufficient kinetic energy and mobility, leading to relatively pristine layer structures with smooth interfaces;28 at higher pressures, the sputtered atoms have much less kinetic energy, resulting in rougher interfaces29 and more disorders (e.g., distinct grain boundary phase formation).30 Structural characterization was performed by low angle x-ray reflectometry (XRR) and high angle XRD using a Bruker D8 thin film x-ray diffractometer with Cu Ka radiation.

    Article Title: Effect of Copper Dopant Ions on the Redox Properties of Electrochemically Prepared Cerium Dioxide Thin Films.
    Article Snippet: XRD patterns of copper (I) oxide and ceria-containing films were recorded using a Bruker thin film x-ray diffractometer using Cu-Kα radiation of wavelength 1.5406 Å. Scanning electron microscopy (SEM) images were obtained via the following method: FTO glass substrates with electrodeposited films were mounted onto carbon tape and placed onto a standard SEM stub, before being coated with gold at 20 μA for 1 min. SEM images were obtained using a Jeol JSM-6700F instrument operating under near vacuum (3 × 10−4 Pa) and a voltage of 5 kV.



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    a Surface charge density of GO and MXene flakes at different pH, calculated using potentiometric titration. b Schematic diagram of the pH-programmed self-assembly process, where uncharged protonated flakes (gray) deposit first, followed by charged deprotonated flakes (brown). c Thermal actuation performance of GO and MXene at 100 °C. The actuators prepared at different pH. <t>d</t> <t>X-ray</t> photoelectron spectroscopy (XPS) of O1s analysis of GO membranes. The O1s spectrum further supports these observations. At pH2, the relative atomic concentrations of the functional groups are as follows: -OH (2.37 at%), C-O (55.18 at%), C=O (42.45 at%). At pH6, the concentrations are -OH (16.45 at%), C-O (66.55 at%), 531.03 eV C = O (16.99 at%). At pH10, the concentrations are C=O (44.28 at%), C-O (53.47 at%) and -OH (2.25 at%). e XPS of O1s analysis of MXene membranes. At pH2, the relative atomic concentrations of the functional groups are as follows: C-Ti-OH (38.45 at%), C-Ti-O (39.65 at.%), Ti-O (21.90 at%). At pH 6, the concentrations are C-Ti-OH (35.85 at%), C-Ti-O (39.92 at%), Ti-O (24.23 at%). At pH 10, the concentrations are Ti-H 2 O (2.57 at%), C-Ti-OH (32.10 at%), C-Ti-O (41.18 at%), Ti-O (24.15 at%). f Differential FTIR spectra of GO and MXene membranes at various pH, highlighting the C=O band at 1600–1700 cm −1 . The set-up for in-situ FTIR experiments before and after infrared irradiation is shown in Supplementary Fig. . The spectra were obtained by subtracting the room-temperature data from those after 3 min of infrared light irradiation. After infrared irradiation, a decrease in C=O band intensity is observed. Additionally, pH-dependent peak shifts are evident: under acidic conditions (pH 2), the C=O peak exhibits a red shift compared to alkaline conditions (pH 10), indicating protonation of carbonyl groups. g Thermal actuating performance of pH-programmed GO and MXene multilayers with different pH. The pH 2 GO membrane remains thermally unresponsive, while the pH 6 membrane exhibits the largest curvature. The pH 10 membrane bends under heating, but with a smaller curvature compared to pH 6, reflecting reduced thermal asymmetry. Actuator dimensions: 4 ×20 mm. Source data are provided as a file.
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    a Surface charge density of GO and MXene flakes at different pH, calculated using potentiometric titration. b Schematic diagram of the pH-programmed self-assembly process, where uncharged protonated flakes (gray) deposit first, followed by charged deprotonated flakes (brown). c Thermal actuation performance of GO and MXene at 100 °C. The actuators prepared at different pH. <t>d</t> <t>X-ray</t> photoelectron spectroscopy (XPS) of O1s analysis of GO membranes. The O1s spectrum further supports these observations. At pH2, the relative atomic concentrations of the functional groups are as follows: -OH (2.37 at%), C-O (55.18 at%), C=O (42.45 at%). At pH6, the concentrations are -OH (16.45 at%), C-O (66.55 at%), 531.03 eV C = O (16.99 at%). At pH10, the concentrations are C=O (44.28 at%), C-O (53.47 at%) and -OH (2.25 at%). e XPS of O1s analysis of MXene membranes. At pH2, the relative atomic concentrations of the functional groups are as follows: C-Ti-OH (38.45 at%), C-Ti-O (39.65 at.%), Ti-O (21.90 at%). At pH 6, the concentrations are C-Ti-OH (35.85 at%), C-Ti-O (39.92 at%), Ti-O (24.23 at%). At pH 10, the concentrations are Ti-H 2 O (2.57 at%), C-Ti-OH (32.10 at%), C-Ti-O (41.18 at%), Ti-O (24.15 at%). f Differential FTIR spectra of GO and MXene membranes at various pH, highlighting the C=O band at 1600–1700 cm −1 . The set-up for in-situ FTIR experiments before and after infrared irradiation is shown in Supplementary Fig. . The spectra were obtained by subtracting the room-temperature data from those after 3 min of infrared light irradiation. After infrared irradiation, a decrease in C=O band intensity is observed. Additionally, pH-dependent peak shifts are evident: under acidic conditions (pH 2), the C=O peak exhibits a red shift compared to alkaline conditions (pH 10), indicating protonation of carbonyl groups. g Thermal actuating performance of pH-programmed GO and MXene multilayers with different pH. The pH 2 GO membrane remains thermally unresponsive, while the pH 6 membrane exhibits the largest curvature. The pH 10 membrane bends under heating, but with a smaller curvature compared to pH 6, reflecting reduced thermal asymmetry. Actuator dimensions: 4 ×20 mm. Source data are provided as a file.
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    Image Search Results


    a Surface charge density of GO and MXene flakes at different pH, calculated using potentiometric titration. b Schematic diagram of the pH-programmed self-assembly process, where uncharged protonated flakes (gray) deposit first, followed by charged deprotonated flakes (brown). c Thermal actuation performance of GO and MXene at 100 °C. The actuators prepared at different pH. d X-ray photoelectron spectroscopy (XPS) of O1s analysis of GO membranes. The O1s spectrum further supports these observations. At pH2, the relative atomic concentrations of the functional groups are as follows: -OH (2.37 at%), C-O (55.18 at%), C=O (42.45 at%). At pH6, the concentrations are -OH (16.45 at%), C-O (66.55 at%), 531.03 eV C = O (16.99 at%). At pH10, the concentrations are C=O (44.28 at%), C-O (53.47 at%) and -OH (2.25 at%). e XPS of O1s analysis of MXene membranes. At pH2, the relative atomic concentrations of the functional groups are as follows: C-Ti-OH (38.45 at%), C-Ti-O (39.65 at.%), Ti-O (21.90 at%). At pH 6, the concentrations are C-Ti-OH (35.85 at%), C-Ti-O (39.92 at%), Ti-O (24.23 at%). At pH 10, the concentrations are Ti-H 2 O (2.57 at%), C-Ti-OH (32.10 at%), C-Ti-O (41.18 at%), Ti-O (24.15 at%). f Differential FTIR spectra of GO and MXene membranes at various pH, highlighting the C=O band at 1600–1700 cm −1 . The set-up for in-situ FTIR experiments before and after infrared irradiation is shown in Supplementary Fig. . The spectra were obtained by subtracting the room-temperature data from those after 3 min of infrared light irradiation. After infrared irradiation, a decrease in C=O band intensity is observed. Additionally, pH-dependent peak shifts are evident: under acidic conditions (pH 2), the C=O peak exhibits a red shift compared to alkaline conditions (pH 10), indicating protonation of carbonyl groups. g Thermal actuating performance of pH-programmed GO and MXene multilayers with different pH. The pH 2 GO membrane remains thermally unresponsive, while the pH 6 membrane exhibits the largest curvature. The pH 10 membrane bends under heating, but with a smaller curvature compared to pH 6, reflecting reduced thermal asymmetry. Actuator dimensions: 4 ×20 mm. Source data are provided as a file.

    Journal: Nature Communications

    Article Title: Protonation and deprotonation of edges in graphene oxide and MXenes as a driving force for actuation in responsive 2D membranes

    doi: 10.1038/s41467-025-63800-9

    Figure Lengend Snippet: a Surface charge density of GO and MXene flakes at different pH, calculated using potentiometric titration. b Schematic diagram of the pH-programmed self-assembly process, where uncharged protonated flakes (gray) deposit first, followed by charged deprotonated flakes (brown). c Thermal actuation performance of GO and MXene at 100 °C. The actuators prepared at different pH. d X-ray photoelectron spectroscopy (XPS) of O1s analysis of GO membranes. The O1s spectrum further supports these observations. At pH2, the relative atomic concentrations of the functional groups are as follows: -OH (2.37 at%), C-O (55.18 at%), C=O (42.45 at%). At pH6, the concentrations are -OH (16.45 at%), C-O (66.55 at%), 531.03 eV C = O (16.99 at%). At pH10, the concentrations are C=O (44.28 at%), C-O (53.47 at%) and -OH (2.25 at%). e XPS of O1s analysis of MXene membranes. At pH2, the relative atomic concentrations of the functional groups are as follows: C-Ti-OH (38.45 at%), C-Ti-O (39.65 at.%), Ti-O (21.90 at%). At pH 6, the concentrations are C-Ti-OH (35.85 at%), C-Ti-O (39.92 at%), Ti-O (24.23 at%). At pH 10, the concentrations are Ti-H 2 O (2.57 at%), C-Ti-OH (32.10 at%), C-Ti-O (41.18 at%), Ti-O (24.15 at%). f Differential FTIR spectra of GO and MXene membranes at various pH, highlighting the C=O band at 1600–1700 cm −1 . The set-up for in-situ FTIR experiments before and after infrared irradiation is shown in Supplementary Fig. . The spectra were obtained by subtracting the room-temperature data from those after 3 min of infrared light irradiation. After infrared irradiation, a decrease in C=O band intensity is observed. Additionally, pH-dependent peak shifts are evident: under acidic conditions (pH 2), the C=O peak exhibits a red shift compared to alkaline conditions (pH 10), indicating protonation of carbonyl groups. g Thermal actuating performance of pH-programmed GO and MXene multilayers with different pH. The pH 2 GO membrane remains thermally unresponsive, while the pH 6 membrane exhibits the largest curvature. The pH 10 membrane bends under heating, but with a smaller curvature compared to pH 6, reflecting reduced thermal asymmetry. Actuator dimensions: 4 ×20 mm. Source data are provided as a file.

    Article Snippet: The XRD patterns were obtained by a thin-film X-ray diffractometer (TF-XRD, Bruker D8 Advance).

    Techniques: Titration, Spectroscopy, Functional Assay, In Situ, Irradiation, Membrane