Boron and nitrogen co-doped carbon dots for boosting electrocatalytic oxygen reduction
Source abstract
Abstract
Carbon dots (CDs) have become an emerging carbon nanomaterial for use in energy-conversion systems because of their large surface area and rapid electron transfer. Carbon dots (BN-CDs) doped with both boron and nitrogen were synthesized by a simple one-step electrochemical etching approach using low-cost petroleum coke as precursor. Compared with CDs doped with only B or N, BN-CDs showed an excellent four-electron oxygen reduction reaction (ORR) activity with a positive onset potential of 0.958 V and a large diffusion-limited current density of −4.32 mA cm−2. Furthermore, the long-term stability and methanol tolerance of BN-CDs were better than those of a commercial Pt/C catalyst. It was found by density functional theory (DFT) calculation that the co-doping of N and B promoted the adsorption of O2 molecules in the ORR process. This work provides new insight into the rational design of carbon nanomaterials and their use in energy conversion.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Carbon and Quantum Dots Applications · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (33)
Show source-provided references
1. Carbon-based metal-free ORR electrocatalysts for fuel cells: past, present, and future [J]10.1002/adma.201804799 ↗
2. The problem with platinum [J]10.1016/S1369-7021(08)70254-2 ↗
3. A review of graphene-based catalysts for oxygen reduction reaction [J]
4. 3D carbon materials for efficient oxygen and hydrogen electrocatalysis [J]
5. Metal-free catalysts for oxygen reduction reaction [J]10.1021/cr5003563 ↗
6. Metal-free heterogeneous catalysis for sustainable chemistry [J]10.1002/cssc.200900180 ↗
7. Improved oxygen reduction performance of a N, S co-doped graphene-like carbon prepared by a simple carbon bath method [J]10.1016/S1872-5805(20)60506-6 ↗
8. Can boron and nitrogen co-doping improve oxygen reduction reaction activity on carbon nanotubes [J]10.1021/ja310566z ↗
9. A review on the preparation and applications of coal-based fluorescent carbon dots [J]10.1016/S1872-5805(20)60520-0 ↗
10. Carbon quantum dots for advanced electrocatalysis [J]
11. Design and fabrication of carbon dots for energy conversion and storage [J]10.1039/C8CS00750K ↗
12. Coal-derived graphene quantum dots produced by ultrasonic physical tailoring and their capacity for Cu (II) detection [J]10.1021/acssuschemeng.8b06792 ↗
13. Nitrogen-doped carbon dots decorated on graphene: a novel all-carbon hybrid electrocatalyst for enhanced oxygen reduction reaction [J]10.1039/C4CC08735F ↗
14. Recent advances on graphene quantum dots: from chemistry and physics to applications [J]10.1002/adma.201808283 ↗
15. Iodine doped composite with biomass carbon dots and reduced graphene oxide: A versatile bifunctional electrode for energy storage and oxygen reduction reaction [J]10.1039/C9TA05559B ↗
16. Template-free synthesis of coral-like nitrogen-doped carbon dots/Ni3S2/Ni foam composites as highly efficient electrodes for water splitting [J]10.1016/j.carbon.2017.12.040 ↗
17. A consistent and accurate ab initio parametrization on density functional dispersion correction (DFT-D) for the 94 elements H-Pu [J]10.1063/1.3382344 ↗
18. Luminescent carbon nanodots: emergent nanolights [J]10.1002/anie.200906623 ↗
19. Carbon nanodots: synthesis, properties and applications [J]10.1039/c2jm34690g ↗
20. Preparation and oxygen reduction activity of BN-doped carbons [J]10.1016/j.carbon.2007.04.031 ↗
21. Nitrogen-doped colloidal graphene quantum dots and their size-dependent electrocatalytic activity for the oxygen reduction reaction [J]10.1021/ja309270h ↗
22. Chemically tailoring coal to fluorescent carbon dots with tuned size and their capacity for Cu (II) detection [J]10.1002/smll.201401328 ↗
23. Metal nanoparticle/carbon quantum dot composite as a photocatalyst for high-efficiency cyclohexane oxidation [J]10.1021/cs400913h ↗
24. Synergistically enhanced activity of nitrogen-doped carbon dots/graphene composites for oxygen reduction reaction [J]10.1016/j.apsusc.2017.06.225 ↗
25. Non-metal single/dual doped carbon quantum dots: A general flame synthetic method and electro-catalytic properties [J]10.1039/C4NR07116F ↗
26. Preparation of coal-based graphene quantum dots/α-Fe2O3 nanocomposites and their lithium-ion storage properties [J]10.1016/j.fuel.2018.12.030 ↗
27. Raman spectroscopy of boron-doped single-layer graphene [J]10.1021/nn301728j ↗
28. One-pot synthesis of fluorescent carbon nanoribbons, nanoparticles, and graphene by the exfoliation of graphite in ionic liquids [J]10.1021/nn900546b ↗
29. Electrochemical tuning of luminescent carbon nanodots: from preparation to luminescence mechanism [J]10.1002/adma.201102866 ↗
30. Mass production of tunable multicolor graphene quantum dots from an energy resource of coke by a one-step electrochemical exfoliation [J]10.1016/j.carbon.2018.08.067 ↗
31. Synthesis of B-doped graphene quantum dots as a metal-free electrocatalyst for the oxygen reduction reaction [J]10.1039/C7TA01485F ↗
32. Two-step boron and nitrogen doping in graphene for enhanced synergistic catalysis [J]10.1002/ange.201209548 ↗
33. Chemical state of surrounding iron species affects the activity of Fe-Nx for electrocatalytic oxygen reduction [J]10.1016/j.apcatb.2019.03.046 ↗