One-Step Preparation of Nitrogen-Doped Platinum-Based Catalysts for Electrocatalytic Oxidation of Ethanol
Abstract
:1. Introduction
2. Results and Discussion
2.1. Preparation of Pt/Nx-GO Catalysts
2.2. Transmission Electron Microscopy (TEM) Characterization of the Catalysts
2.3. X-ray Diffraction (XRD) Characterization of the Catalysts
2.4. Raman Spectroscopy Characterization of the Catalysts
2.5. X-ray Photoelectron Spectroscopy (XPS) Characterization of the Catalysts
2.6. SEM and EDS Characterization of the Catalysts
2.7. Catalytic Performance Analysis
2.7.1. Electrochemical H Adsorption–Desorption Reaction of the Catalysts
2.7.2. Cyclic Voltammetry Characterization of the Catalysts in Ethanol Oxidation
2.7.3. Characterization of the Catalysts via I–t Curves
2.7.4. Variable-Temperature Cyclic Voltammetry Testing of the Catalysts and the Arrhenius Equation
2.7.5. Cyclic Voltammetry Analysis of Degradation of the Catalysts
3. Materials and Methods
3.1. Chemicals
3.2. Preparation of Working Electrode
3.3. Physical Characterization
3.4. Electrochemical Measurement Scheme
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Sample | Elemental Content (at%) | N-Containing Functional Groups (BE, eV) | |||||
---|---|---|---|---|---|---|---|
C | N | O | Pt | Pyridinic N (%) 398.3 | Amino N (%) 399.4 | Graphitic N (%) 401.1 | |
1#: Pt/GO | 83.44 | - | 14.88 | 1.67 | - | - | - |
2#: Pt/N25-O | 82.98 | 0.56 | 15.14 | 1.32 | 32.21 | 36.92 | 30.87 |
3#: Pt/N50-GO | 82.71 | 0.73 | 15.11 | 1.45 | 32.97 | 40.43 | 26.60 |
4#: Pt/N100-GO | 81.01 | 0.98 | 16.12 | 1.89 | 28.66 | 46.61 | 24.73 |
5#: Pt/N150-GO | 80.58 | 1.62 | 15.62 | 2.18 | 31.15 | 45.27 | 23.58 |
6#: Pt/N200-GO | 80.23 | 2.27 | 15.06 | 2.44 | 34.45 | 48.98 | 16.57 |
7#: Pt/N250-GO | 78.83 | 3.25 | 15.95 | 1.97 | 29.67 | 56.27 | 14.06 |
Pt species/(BE, eV) | |||||||
Pt0 4f7/2 (%) 71.4 | Pt0 4f5/2 (%) 74.6 | Pt2+ (%) 72.8 | Pt2+ (%) 76.3 | ||||
1#: Pt/GO | 30.79 | 28.98 | 19.55 | 20.68 | |||
2#: Pt/N25-GO | 34.27 | 28.55 | 21.56 | 15.62 | |||
3#: Pt/N50-GO | 33.07 | 32.14 | 19.87 | 14.92 | |||
4#: Pt/N100-GO | 35.51 | 34.99 | 15.90 | 13.60 | |||
5#: Pt/N150-GO | 37.47 | 34.74 | 12.71 | 15.08 | |||
6#: Pt/N200-GO | 39.79 | 33.84 | 16.02 | 10.35 | |||
7#: Pt/N250-GO | 35.58 | 27.96 | 20.88 | 15.58 |
Sample | SEA (m2/g) | Peak Current Density (A g‒1) | Steady-State Current Density (A g‒1) |
---|---|---|---|
Pt/C(JM) | 17.6 | 77.2 | 13.8 |
1#: Pt/GO | 25.2 | 142.2 | 43.3 |
2#: Pt/N25-GO | 27.69 | 240.5 | 45.7 |
3#: Pt/N50-GO | 34.91 | 302.3 | 80.2 |
4#: Pt/N100-GO | 37.81 | 343.1 | 98.8 |
5#: Pt/N150-GO | 40.91 | 378.3 | 105.7 |
6#: Pt/N200-GO | 45.97 | 445.1 | 119.1 |
7#: Pt/N250-GO | 30.12 | 283.7 | 72.1 |
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Guo, R.; An, N.; An, S.; Zhang, J.; Chou, K.; Guan, L.; Tian, X. One-Step Preparation of Nitrogen-Doped Platinum-Based Catalysts for Electrocatalytic Oxidation of Ethanol. Catalysts 2021, 11, 1264. https://doi.org/10.3390/catal11111264
Guo R, An N, An S, Zhang J, Chou K, Guan L, Tian X. One-Step Preparation of Nitrogen-Doped Platinum-Based Catalysts for Electrocatalytic Oxidation of Ethanol. Catalysts. 2021; 11(11):1264. https://doi.org/10.3390/catal11111264
Chicago/Turabian StyleGuo, Ruihua, Na An, Shengli An, Jieyu Zhang, Kuochih Chou, Lili Guan, and Xiao Tian. 2021. "One-Step Preparation of Nitrogen-Doped Platinum-Based Catalysts for Electrocatalytic Oxidation of Ethanol" Catalysts 11, no. 11: 1264. https://doi.org/10.3390/catal11111264