Fuel cells and metal-air batteries will only become widely available in everyday life when the expensive platinum-based electrocatalysts used for the oxygen reduction reactions are replaced by other efficient, low-cost and stable catalysts. We report here the use of nitrogen-doped graphdiyne as a metal-free electrode with a comparable electrocatalytic activity to commercial Pt/C catalysts for the oxygen reduction reaction in alkaline fuel cells. Nitrogen-doped graphdiyne has a better stability and increased tolerance to the cross-over effect than conventional Pt/C catalysts.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/c4nr03185g | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Magnetoresistance effect of nitrogen doped graphdiyne.
RSC Adv
November 2024
College of Physics and Energy, Fujian Normal University, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials Fuzhou 350117 China
This investigation elucidates the influence of nitrogen doping (N-doping) on the magnetoresistance (MR) characteristics of graphdiyne (GDY) by methodically adjusting the levels of N-doping. Through exhaustive experimental analyses, encompassing SEM, XPS, and magneto-transport measurements, we demonstrate that N-doping markedly augments carrier concentration, thereby inducing distinct MR behaviors. Specifically, N-GDY manifests negative magnetoresistance (NMR) attributable to weak localization phenomena, whereas N-GDY and N-GDY exhibit positive magnetoresistance (PMR) characterized by significant resistance enhancements.
View Article and Find Full Text PDFBuilt-in potential-regulated and exogenous excited electrochemiluminescence sensor based on dual-monomers molecularly imprinted polymer for the biomimetic detection of thiabendazole.
Food Chem
February 2025
State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China. Electronic address:
Thiabendazole (TBZ) residues in food pose a serious threat to public health. Herein, an ultrasensitive molecularly imprinted electrochemiluminescence sensor (MIECLS) was developed to detect TBZ, using electron autoregulation in nitrogen-doped graphdiyne‑copper nanowires (NGDY-CuNWs) composite luminophore and cyclic amplification strategy of tin disulfide nanosheets (SnSNSs). NGDY-CuNWs composite luminophores were formed by spontaneous chemisorption to provide electrochemiluminescence signals, and the charge redistribution in it resulted in a built-in potential that improved the electron transfer and redox reaction rate.
View Article and Find Full Text PDFDual-source signal amplification electrochemiluminescence sensor combined with molecularly imprinted polymers for the imidacloprid detection.
Sci Total Environ
May 2024
State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China. Electronic address:
A novel lanthanide metal-organic-gel (MOG)-derived material/nitrogen-doped graphdiyne (Tb-Ru-MOG/CeO/N-GDY) composite with a dual-source signal amplification strategy was prepared and used to construct a molecularly imprinted sensor based on bifunctional monomers for the detection of imidacloprid (IMI) using electrochemiluminescence (ECL). In a green reaction environment, terbium (III) (Tb) can undergo multiple coordination reactions with 4'-(4-carboxyphenyl)-2,2':6',2″-terpyridine (Hcptpy) and tris(4,4'-dicarboxylicacid-2,2'-bipyridyl) ruthenium (II) dichloride (Ru(dcbpy)), and combine with ceria nanoparticles (CeO NPs) to form Tb-Ru-MOG/CeO. Within the Tb-Ru-MOG/CeO framework, energy transfer from the double ligands can sensitize the central Tb, triggering a distinct antenna effect and energy-transfer, and its polyporous configuration offered a nanoconfined space for Ce/Ce to effectively catalyze coreactant radicals (SO), leading to in-situ endogenous activation ECL reactions.
View Article and Find Full Text PDFTransition metals anchored on nitrogen-doped graphdiyne for an efficient oxygen reduction reaction: a DFT study.
Phys Chem Chem Phys
January 2024
College of Carbon Neutrality Future Technology, China University of Petroleum (Beijing), Beijing 102249, China.
Article Synopsis
- The study focuses on finding cost-effective single-atom catalysts for the oxygen reduction reaction (ORR) to improve fuel cells, particularly using transition metals anchored on nitrogen-doped graphdiyne (GDY).
- Researchers examined various transition metal-carbon-nitrogen complexes (TMCN), finding 18 stable options but identified that strong *OH adsorption was limiting their performance compared to platinum.
- By modifying the OH ligand to create TMCN-OH, the adsorption of *OH and other intermediates was weakened, resulting in improved ORR activity for several complexes, with specific catalysts like MnCN-OH showing promising performance metrics.
Graphdiyne and Nitrogen-Doped Graphdiyne Nanotubes as Highly Efficient Electrocatalysts for Oxygen Reduction Reaction.
Int J Mol Sci
November 2023
School of Science, China University of Geosciences (Beijing), Beijing 100083, China.
Electrocatalysts with high efficiency and low cost are always urgently needed for oxygen reduction reaction (ORR). As a new carbon allotrope, graphdiyne (GDY) has received much attention due to its unique chemical structure containing sp- and sp-hybridized carbons, and intrinsic electrochemical activity ascribed to its inherent conductivity. Herein, we prepared two graphdiyne materials named GDY nanotube and nitrogen-doped GDY (NGDY) nanotube via cross-coupling reactions on the surface of Cu nanowires.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!