cpy_131_repro_calc

Type: Sample

ObjectId: 29160

Created: 8/8/2025 9:51:43 AM by A09) Leppin Christian [christian.leppin@rub.de]

Updated: 8/13/2025 5:47:18 PM by A09) Leppin Christian [christian.leppin@rub.de]

Access: Public Sort Code (asc): 0

Description: The nanoparticles were provided from the Schulz-Group. Synthesis description: For the synthesis of spherical Co3O4 nanoparticles, 1.164 g Co(NO3)2·6 H2O (4.0 mmol) was dissolved in 200 mL water in an open reactor vessel. Subsequently, 3.24 mL of ammonium hydroxide solution and 240 µL of H2O2 were added. The black reaction mixture was then heated to 60 °C for 15 minutes. A solution containing 0.58 g Co(NO3)2·6 H2O (2 mmol) dissolved in 80 mL water was added and the reaction temperature was maintained at 60 °C for 3 hours. After cooling to room temperature, the nanoparticles were collected by centrifugation at 3000 rpm, washed with water and acetone and dried in air. The particles were then heated at a rate of 4.5 °C min-1 to 300 °C, where the temperature was maintained for 15 minutes before cooling to room temperature.

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: Co-O

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Associated Objects

  • PXRD_cpy_131_repro_calc
    XRD Integ. Raw ZIP (xy)

    PXRD of Co3O4 kindly provided by Dr. Georg Bendt. The PXRD patterns were recorded on a Bruker D8 Advance powder diffractometer using Bragg-Brentano geometry at room temperature with Cu Kα radiation (λ = 1.5418 Å, 40 kV, and 40 mA). The powder samples were examined in the range between 5 ° and 90 ° (2θ) with a step size of 0.01 ° (2θ).

    PXRD_cpy_131_repro_calc.xy

Referenced Objects (Reverse Association)

  • #10_Co3O4_Nanoparticle_Electrode
    Sample

    ElabID: CL250528_001_Co3O4_QCM#10, Preparation Procedure: The Co3O4 nanoparticle electrodes with a small catalyst loading were fabricated by spin-casting (Laurell WS-400BX-6NPP/LITE) 20 µL of Co3O4 ink at 4000 rpm for 5 min onto a gold-coated quartz crystal microbalance (QCM, BeamTech) resonator, which served as the current collector. The ink was prepared by dispersing Co3O4 nanoparticles (cpy_131_repro_calc) in Milli-Q water to achieve a concentration of 0.1 mg mL⁻¹. The exact catalyst loading cannot be directly derived from the dispersion’s concentration and cast volume. It is, however, approximated to be 1.7 µg cm⁻² at the maximum, as excess solution is expelled from the substrate during spinning.

  • #11_Co3O4_Nanoparticle_Electrode
    Sample

    Elab Identifier: CL250528_001_Co3O4_QCM#11, Preparation Procedure: The Co3O4 nanoparticle electrodes with a small catalyst loading were fabricated by spin-casting (Laurell WS-400BX-6NPP/LITE) 20 µL of Co3O4 ink at 4000 rpm for 5 min onto a gold-coated quartz crystal microbalance (QCM, BeamTech) resonator, which served as the current collector. The ink was prepared by dispersing Co3O4 nanoparticles (cpy_131_repro_calc) in Milli-Q water to achieve a concentration of 0.1 mg mL⁻¹. The exact catalyst loading cannot be directly derived from the dispersion’s concentration and cast volume. It is, however, approximated to be 1.7 µg cm⁻² at the maximum, as excess solution is expelled from the substrate during spinning.

  • #43_Co3O4_Nanoparticle_Electrode
    Sample

    ElabID: CL20250726_001_Co3O4#43, Preparation Procedure: The Co3O4 nanoparticle electrodes with a high catalyst loading (42.7 µg cm-2) were fabricated by drop-casting 100 µL of Co3O4 ink onto a gold-coated quartz crystal microbalance (QCM) resonator, which served as the substrate. The ink was prepared by dispersing Co3O4 nanoparticles in Milli-Q water to achieve a concentration of 0.5 mg mL⁻¹.

  • #48_Co3O4
    Sample

    Elab Identifier: , Preparation Procedure: The Co3O4 nanoparticle electrodes with a high catalyst loading (42.7 µg cm-2) were fabricated by drop-casting 100 µL of Co3O4 ink onto a gold-coated quartz crystal microbalance (QCM) resonator, which served as the substrate. The ink was prepared by dispersing Co3O4 nanoparticles in Milli-Q water to achieve a concentration of 0.5 mg mL⁻¹.

  • #21_Co3O4_Nanoparticle_Electrode
    Sample

    ELabID: ,Preparation Procedure: The Co3O4 nanoparticle electrodes with a small catalyst loading were fabricated by spin-casting (Laurell WS-400BX-6NPP/LITE) 20 µL of Co3O4 ink at 4000 rpm for 5 min onto a gold-coated quartz crystal microbalance (QCM, BeamTech) resonator, which served as the current collector. The ink was prepared by dispersing Co3O4 nanoparticles (cpy_131_repro_calc) in Milli-Q water to achieve a concentration of 0.1 mg mL⁻¹. The exact catalyst loading cannot be directly derived from the dispersion’s concentration and cast volume. It is, however, approximated to be 1.7 µg cm⁻² at the maximum, as excess solution is expelled from the substrate during spinning.

All properties (except table)

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Type Name Value Comment
Int Type 0 Type of the physical sample --//required
Int Wafer ID 0 as engraved on the wafer (0 - no id) --//required & validationSchema=https://wafervalidation.matinf.pro/wafervalidation

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