期刊
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
卷 150, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2020.109684
关键词
Pd; Graphene; Glucose electrooxidation density functional theory
资金
- Scientific and Technological Research Council of Turkey TUBITAK project [116M004]
Few layer graphene (G) and nitrogen-doped few layer graphene (N-doped G) are prepared on Cu foil via chemical vapor deposition (CVD), then transferred to indium tin oxide (ITO) substrate to obtain electrodes. Pd metal is electrodeposited onto the N-doped G/ITO electrode, which is characterized by Raman spectroscopy and SEM-EDX. Analysis shows the successful formation of G and N structures, with the best glucose electrooxidation activity observed on the P-N-doped G/ITO electrode. Density functional theory (DFT) calculations are performed to study the molecular interactions on Pd-modified G and Pd-modified N-doped G surfaces.
At present, few layer graphene (G) and nitrogen doped few layer graphene (N doped-G) are firstly coated on Cu foil via chemical vapor deposition (CVD) method and G and N doped-G coated Cu foil is transferred to the indium tin oxide (ITO) substrate surface to obtain electrodes. Pd metal is electrodeposited onto the N doped-G/ITO electrode (Pd-N doped-G/ITO). Pd-N doped-G/ITO electrode are characterized with advanced surface characterization methods such as Raman spectroscopy and SEM-EDX. Characterization results reveal that G and N structures are succesfully obtained and the presence of Pd on Pd-N doped-G/ITO is confirmed with SEM-EDX mapping. The cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS) are employed to examine glucose electrooxidation of G/ITO, N-doped G/ITO, and Pd-N-doped G/ITO electrodes. P-N-dopedG/ITO electrode exhibits the best glucose electrooxidation activity with 2 mA/cm(2) specific activity. Density functional theory (DFT) calculations are also carried out to better understand the interaction of the molecules on Pd modified G (Pd-G) and Pd modified N-doped G (Pd-3NG) surfaces.
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