Fourier transform infra-red spectroscopy (FT-IR) was carried out by using Tensor 27 instrument with addition of platinum stand on which a very small amount of spinel oxides sample was placed (Bruker, USA). The particle size and morphology of MnCo2O4 powder was observed by scanninig electron microscope (SEM) JEOL JSM-6390 LV. The X-ray diffractograms of the MnCo2O4 samples were obtained by means of Philips PW-1050 automatic diffractometer with a Cu K□1,2 line of 0.15418 nm. All electrochemical measurements were performed using a CHI 800C workstation (CH Instruments, USA). A three electrode system consisted of the glassy carbon working electrode (GCE; bare or modified), (CH instruments, USA; model CHI104), 3 mm in diameter. As reference electrode was used Ag/AgCl (CH Instruments, USA; CHI111) and platinum wire as auxiliary electrode.
Chi 800c workstation
Manufactured by CH Instruments
Sourced in United States
The CHI 800C workstation is a versatile electrochemical instrument designed for a wide range of electroanalytical applications. It features a high-performance potentiostat/galvanostat with advanced capabilities, including support for various electrochemical techniques and measurement modes.
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2 protocols using chi 800c workstation
1
Structural and Electrochemical Analysis of MnCo2O4 Oxide
2
Electrochemical and Graphite Furnace AAS Analysis
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Electrochemical measurements were performed using the CHI 800C workstation (CH Instruments, USA). The three electrode system consisted of the glassy carbon electrode (CH Instruments, Model CHI104, 3 mm in diameter), a reference electrode (Ag/AgCl, CH Instruments, Model CHI111) and a platinum wire (0.5 mm) as auxiliary electrode.
A Perkin-Elmer 2380 atomic absorption spectrophotometer with electrothermal atomization unit Model HGA-400 with background correction with deuterium lamp was used for GF-AAS (graphite furnace) measurements. As a source of radiation, hollow cathode lamps were used. Copper was measured at 324.8 nm and lead at 217 nm wavelength. The argon flow rate was 220 cm 3 min -1 . Graphite cuvettes made of pyrollitic graphite were used. The volume of working solution was 20 μL. Working programs of the graphite furnace (GF) for investigated metals are presented in Table 2.
A Perkin-Elmer 2380 atomic absorption spectrophotometer with electrothermal atomization unit Model HGA-400 with background correction with deuterium lamp was used for GF-AAS (graphite furnace) measurements. As a source of radiation, hollow cathode lamps were used. Copper was measured at 324.8 nm and lead at 217 nm wavelength. The argon flow rate was 220 cm 3 min -1 . Graphite cuvettes made of pyrollitic graphite were used. The volume of working solution was 20 μL. Working programs of the graphite furnace (GF) for investigated metals are presented in Table 2.
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