Co3O4/NiCo2O4 heterojunction as oxygen evolution reaction catalyst for efficient luminol anode electrochemiluminescence

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 659, P. 728 - 738

Published: Jan. 7, 2024

Language: Английский

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Bioinspired binary-site catalysts for novel urea-assisted Zn-air battery: A transfer station between renewable energy and hydrogen

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 354, P. 124115 - 124115

Published: April 23, 2024

Language: Английский

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Iodine intercalation-assisted alkali activation constructs coal-based porous carbon for high-performance supercapacitors

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 669, P. 518 - 528

Published: May 5, 2024

Language: Английский

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Nitrogen-Doped Carbon Nanosheets Supported Co for Efficient and Stable Electrocatalytic Oxygen Reduction

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(4), P. 4491 - 4500

Published: Feb. 14, 2024

Designing highly efficient non-noble metal electrocatalysts to replace state-of-the-art noble such as Pt is crucial for large-scale application of hydrogen fuel cells. In this paper, we proposed a facile synthetic strategy using metal–organic framework material template achieve evenly distributed Co nanoparticles (Co NPs) on the N-doped carbon nanosheets with high specific surface area and electrocatalytic activity toward oxygen reduction reaction (ORR). The presence pyrrolic N modulated electronic structure promote ORR catalytic while hindering NPs from aggregation. results show that nanosheet-supported have best at an optimal annealing temperature (900 °C). electrocatalyst exhibited onset potential (Eonset) 0.96 V vs. RHE half-wave (E1/2) 0.89 RHE, which outperformed commercial 20% Pt/C. At same time, it also showed better evolution zinc–air battery (ZAB) performance than RuO2 Therefore, work can provide guidance design synthesis multifunctional future ZAB applications.

Language: Английский

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N-Doped Carbon Nanotubes Nucleated through Cobalt Nanoparticles as Bifunctional Catalysts for Zinc–Air Batteries

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(7), P. 7865 - 7882

Published: April 1, 2024

We introduce an environmentally sustainable approach to create uniformly nitrogen-incapacitated carbon nanotubes nucleated through cobalt nanoparticles. A unique architecture involving shells on Co nanoparticles exists along with the surface morphology prompted by existence of various nitrogen moieties. The are covered graphitic and confined within a defective porous framework, enhancing area porosity exposing large active centers for catalytic activities. Our uses single-step in situ synthesis process, which yields these exceptionally good bifunctional electrocatalysts oxygen evolution reaction, reduction zinc–air battery applications. These massive pores provide advantage exceptional reaction (ORR) performance. samples Co-embedded optimal N-doping exhibit higher half-wave potential (E1/2) ∼0.882 V vs reversible hydrogen electrode (RHE) compared standard Pt/C (∼0.874 RHE) aqueous 0.1 M KOH solution, at same catalyst-mass loading. For batteries, our samples, as air-reducing catalysts, high open-circuit voltage 1.512 impressive peak power density (150.6 mW cm–2), surpasses commercial + RuO2 catalysts (92.4 well many reported electrocatalysts. Hence, candidates coherent depiction multifunctional, efficient, durable straightforward, inexpensive, scalable fabrication rechargeable batteries.

Language: Английский

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Modulation in work function of CoTe as bifunctional electrocatalyst for rechargeable zinc air battery

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 672, P. 170 - 178

Published: June 1, 2024

Language: Английский

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Atomically dispersed rare earth dysprosium-nitrogen-carbon for boosting oxygen reduction reaction

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 684, P. 87 - 96

Published: Jan. 6, 2025

Language: Английский

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Cheap and portable paper chip with terrific oxidase-like activity and SERS enhancement performance for SERS-colorimetric bimodal detection of intracellular glutathione

Biosensors and Bioelectronics, Journal Year: 2023, Volume and Issue: 244, P. 115817 - 115817

Published: Nov. 6, 2023

Language: Английский

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N, P, S Codoped Carbon Nanozymes with Enhanced Peroxidase-like Activity and Binding Affinity for Total Antioxidant Capacity Assay

ACS Applied Nano Materials, Journal Year: 2023, Volume and Issue: 6(24), P. 23303 - 23312

Published: Dec. 5, 2023

Developing peroxidase-like sensors with excellent catalytic activity to construct colorimetric has been an important challenge for a long time. The electronegativity of the doped nonmetallic atoms can change chemical environment carbon material and promote redistribution electrons, thus improving electron transfer channel between nanozyme reaction substrate further enhancing activity. Herein, nitrogen (N), phosphorus (P), sulfur (S) codoped (NPS-C) was successfully designed via one-step high-temperature pyrolysis. Compared N-doped nanozymes (N–C), N P (NP-C) have lower Michaelis–Menten constant, S (NS-C) higher rate. Therefore, based on synergy different atoms, NPS-C exhibited stronger binding affinity, which effectively activated H2O2 produce reactive oxygen intermediates oxidation capacity superoxide anion radical (•O2–) promoted TMB lose be oxidized oxTMB. Moreover, ascorbic acid (AA), as antioxidant model, rapidly consume species reduce linear relationship concentration AA inhibition degree activity, sensor constructed analyze total (TAC) in beverages.

Language: Английский

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Fe–N/P-co-Doped Three-Dimensional Graphene Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

ACS Applied Nano Materials, Journal Year: 2023, Volume and Issue: 6(18), P. 16662 - 16673

Published: Sept. 8, 2023

The evolution of highly active dual-functional catalysts is critical to zinc–air batteries (ZAB). Herein, three-dimensional Fe–N/P-co-doped graphene (3D Fe–N/P-G) materials with a high oxygen reduction reaction (ORR) and (OER) response are prepared by molten salt protection method KCl. 3D Fe–N/P-G exhibits large Brunauer–Emmett–Teller (BET) surface area dense network pores for improved mass transfer efficiency. addition P atoms able produce synergistic effect that improves the ORR catalytic activity catalyst. Regarding electrical efficiency, half-wave potential (E1/2) 0.860 V vs reversible hydrogen electrode (RHE) electron number 3.98 from 0.4 0.7 RHE. small overvoltage (ΔE = Ej 10 – E1/2) 0.77 V. Additionally, battery as trigger cathode has power density (170 mW cm–2), specific capacity (671 mAh g–1), charge/discharge polarization, outstanding prolonged stability. It suggested powerful bifunctional ZAB

Language: Английский

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