Scanning electron microscopy (SEM) measurements were performed on an SU8100 scanning electron microscope (Hitachi, Japan) with an accelerating voltage of 10 kV. X-photoelectron spectroscopy (XPS) data were obtained from a PHI5300 electron spectrometer (PE Ltd., Waltham, MA, USA) at 250 W, 14 kV and Mg Kα radiation. All electrochemical tests, including cyclic voltammetry (CV) and differential pulse voltammetry (DPV), were carried out on a PGSTAT302N Autolab electrochemical workstation (Metrohm, Herisau, Switzerland). The test adopted a conventional three-electrode system, including bare or modified GCE as the working electrode (the electrode’s size was 0.5 cm × 0.5 cm), a platinum sheet as the counter-electrode and an Ag/AgCl (saturated with KCl solution) electrode as the reference electrode. DPV test parameters were as follows: the step potential was 5 mV, the pulse amplitude was 25 mV, the pulse time was 0.05 s and the time interval was 0.2 s.
Autolab electrochemical workstation pgstat302n
Manufactured by Metrohm
Sourced in Switzerland
The Autolab electrochemical workstation (PGSTAT302N) is a laboratory instrument designed for electrochemical measurements. It provides a platform for conducting various electrochemical techniques, such as potentiometry, voltammetry, and impedance spectroscopy. The core function of this product is to enable the measurement and analysis of electrochemical processes.
Automatically generated - may contain errors
Lab products found in correlation
Potassium dichromate, by Xilong (3 mentions)
Zinc chloride, by Xilong (3 mentions)
Ht7700, by Hitachi (2 mentions)
Su8100 scanning electron microscope, by Hitachi (1 mentions)
Cadmium nitrate tetrahydrate cd no3 2 4h2o, by Merck Group (1 mentions)
Sodium acetate ch3coona, by Merck Group (1 mentions)
Iron 3 chloride hexahydrate fecl3 6h2o, by Merck Group (1 mentions)
Lead nitrate pb no3 2, by Merck Group (1 mentions)
Copper sulfate pentahydrate cuso4 5h2o, by Merck Group (1 mentions)
Acetic acid ch3cooh, by Merck Group (1 mentions)
Ultra 55, by Zeiss (1 mentions)
Jem 2100, by JEOL (1 mentions)
Ht7700 microscope, by Hitachi (1 mentions)
6 protocols using autolab electrochemical workstation pgstat302n
1
Electrochemical Characterization of Modified Electrodes
2
Synthesis and Characterization of Metal-Organic Frameworks
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2-Aminoterephthalic acid H2N-C6H3-1,4-(COOH)2 (NH2-TPA) (99 wt%), iron(iii ) chloride hexahydrate FeCl3·6H2O (99 wt%), methanol CH3OH (MeOH) (anhydrous, 99.8 v/v%), sodium acetate CH3COONa (99 wt%), acetic acid CH3COOH (99.5 wt%), cadmium nitrate tetrahydrate Cd(NO3)2·4H2O (99 wt%), lead nitrate Pb(NO3)2 (99 wt%), and copper sulfate pentahydrate CuSO4·5H2O (99 wt%.) were purchased from Sigma-Aldrich. Cobalt sulphate heptahydrate (CoSO4·7H2O 99.5 wt%), nickel sulphate hexahydrate (NiSO4·6H2O 98.5 wt%), potassium dichromate (K2Cr2O7 99.8 wt%), and zinc chloride (ZnCl2 98 wt%.) were supplied by Xilong Chemical Co., China. The appropriate amounts of sodium acetate and acetic acid were used to prepare acetate buffer solution 0.1 M (ABS) with pH 6.0. Dimethylformamide C3H7NO (DMF) (99.94 v/v%) was purchased from Fisher Chemical. Polyethylene glycol 2000 (H(OCH2CH2)nOH, PEG 2000) was supplied by Alfa Aesar.
A Siemens D5005 diffractometer (Cu Kα radiation, λ = 1.54056 Å), a NICOLET iS50FT-IR spectrometer, a Hitachi S4800 scanning electron microscope (SEM), and a TECNAI F20-G2 high-resolution transmission electron microscope (TEM) were used to perform X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), SEM, and TEM measurements, respectively. Electrochemical measurements were conducted using a PGSTAT302N AutoLab electrochemical workstation (Metrohm, Netherlands).
A Siemens D5005 diffractometer (Cu Kα radiation, λ = 1.54056 Å), a NICOLET iS50FT-IR spectrometer, a Hitachi S4800 scanning electron microscope (SEM), and a TECNAI F20-G2 high-resolution transmission electron microscope (TEM) were used to perform X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), SEM, and TEM measurements, respectively. Electrochemical measurements were conducted using a PGSTAT302N AutoLab electrochemical workstation (Metrohm, Netherlands).
3
Electrochemical Characterization of Bilayer Films
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All ECL and electrochemical tests were conducted using the conventional three-electrode system. Typically, ITO- or SNA-modified ITO served as the working electrode, a platinum wire or platinum foil served as the counter electrode, and silver/AgCl (with saturated KCl as the internal reference solution) served as the reference electrode. ECL tests were performed on the MPI-E II instrument (Xi’an Rui Mai Analytical Instrument Co., Ltd., Xi’an, China). Cyclic voltammetry (CV) was carried out using a three-electrode system on an Autolab electrochemical workstation (PGSTAT302N, Metrohm, Zofingen, Switzerland) with a scan rate of 50 mV/s. Morphological characterization was conducted through transmission electron microscopy (TEM, HT7700, Hitachi, Japan) and scanning electron microscopy (SEM, ULTRA 55, Carl Zeiss, Jena, Germany). To prepare TEM samples, the bilayer film was scraped off the electrode with a knife, placed in anhydrous ethanol, and sonicated for 2 h to ensure uniform dispersion. The dispersed solution was dropped onto a copper grid, air-dried naturally, and observed by TEM with an accelerating voltage of 200 kV. To obtain SEM samples, a knife was used to create a scratch on the back of the bp-SNA/ITO electrode, gently breaking it to expose a complete cross-section. After the gold coating, the sample was observed by SEM with an accelerating voltage of 5 kV.
4
Characterization of VMSF Nanostructure
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The pore structure and vertically ordered nanochannels of the VMSF were characterized by transmission electron microscopy (TEM). Images were obtained on a transmission electron microscope (HT7700, Hitachi, Japan). The accelerating voltage was 100 kV. VMSF was gently scraped from p-SPCE, then dispersed in ethanol. Before characterization, the VMSF dispersion was dropped onto a copper grid. All electrochemical experiments, including cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS), were performed using an Autolab electrochemical workstation (PGSTAT302N, Metrohm, Herisau, Switzerland). The CV scan rate was 50 mV/s. During the DPV test, the step potential was 0.005 V, the pulse amplitude was 0.05 V, the pulse time was 0.05 s and the interval time was 0.2 s. EIS measurement was performed in K3Fe(CN)6/K4Fe(CN)6 (2.5 mM) solution containing KCl (0.1 M) with a frequency range of 104 to 10−1 Hz.
5
Morphological Characterization of bp-SNA/ITO
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The morphology of bp-SNA/ITO was examined using a transmission electron microscope (TEM, JEM-2100, JEOL, Japan). To prepare TEM samples, the bp-SNA layer was carefully scraped from the ITO electrode using a scalpel and dispersed in a minimal amount of ethanol, followed by ultrasonication for 0.5 h. Subsequently, the resulting dispersion was dropped onto a copper grid, dried under an infrared lamp, and then subjected to TEM observation with an acceleration voltage set at 200 kV. Cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS) tests were conducted using the Autolab electrochemical workstation (PGSTAT302N, Metrohm, Switzerland). All electrochemical tests used the standard three-electrode system, with either bare or modified ITO electrodes serving as the working electrode, platinum wire or foil as the counter electrode, and an Ag/AgCl electrode (saturated KCl solution) as the reference electrode.
6
XPS and TEM Analysis of Functionalized SPCEs
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X-ray photoelectron spectroscopy (XPS) analysis of GO or ErGO-modified SPCEs was performed using Mg Kα irradiation at 250 W and 14 kV (PHI5300, PE Ltd., Boston, MA, USA). The morphology of NH2-VMSF was investigated by transmission electron microscopy (TEM) using an HT7700 microscope (Hitachi, Tokyo, Japan) with copper mesh as the support material. An accelerating voltage of 100 kV was applied. Before measurement, NH2-VMSF was carefully scraped from the electrode surface and sonicated in ethanol, to obtain the sample dispersion. All electrochemical experiments including cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV) were performed on an Autolab electrochemical workstation (PGSTAT302N, Metrohm, Heilissau, Switzerland). For EIS measurement, frequencies ranged from 0.1 Hz to 100 kHz with a perturbation amplitude of 5 mV.
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