Plasma-assisted nitrogen doping in Ni–Co–P hollow nanocubes for efficient hydrogen evolution electrocatalysis

Nanoscale ◽  
2020 ◽  
Vol 12 (25) ◽  
pp. 13708-13718
Author(s):  
Qiaomei Luo ◽  
Yiwei Zhao ◽  
Yuyang Qi ◽  
Hongqiang Xin ◽  
Chen Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Nitrogen Doping ◽  
Synergistic Effects ◽  
Hollow Structure ◽  
Experimental Results ◽  
Nitrogen Doped ◽  
N Doping

Plasma-assisted nitrogen doped Ni–Co–P hollow nanocubes were fabricated. Both theoretical and experimental results proved the enhancement of catalytic activity for HER, owing to the synergistic effects of versatile hollow structure and N doping.

An MOF-derived copper@nitrogen-doped carbon composite: the synergistic effects of N-types and copper on selective CO2 electroreduction

2019 ◽  
Vol 9 (20) ◽  
pp. 5668-5675 ◽  
Author(s):  
Yuan-Sheng Cheng ◽  
Xin-Ping Chu ◽  
Min Ling ◽  
Na Li ◽  
Kong-Lin Wu ◽  
...  
Keyword(s):  
Synergistic Effects ◽  
Carbon Composite ◽  
Nitrogen Doped ◽  
Co2 Electroreduction ◽  
N Doping ◽  
Nitrogen Doped Carbon

N-doping carbon and copper derived from benzimidazole-modified Cu-BTC MOFs have synergistic effects on selective CO2 electroreduction.

Mo2C quantum dot embedded chitosan-derived nitrogen-doped carbon for efficient hydrogen evolution in a broad pH range

2016 ◽  
Vol 52 (86) ◽  
pp. 12753-12756 ◽  
Author(s):  
Zonghua Pu ◽  
Min Wang ◽  
Zongkui Kou ◽  
Ibrahim Saana Amiinu ◽  
Shichun Mu
Keyword(s):  
Catalytic Activity ◽  
Quantum Dot ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Catalytic Activity ◽  
Nitrogen Doped ◽  
Ph Range ◽  
Nitrogen Doped Carbon

Mo2C QDs/NGCLs exhibit high catalytic activity and durability for the hydrogen evolution reaction in a broad pH range.

scholarly journals Biopolymer-Inspired N-Doped Nanocarbon Using Carbonized Polydopamine: A High-Performance Electrocatalyst for Hydrogen-Evolution Reaction

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 912
Author(s):  
Duong Nguyen Nguyen ◽  
Uk Sim ◽  
Jung Kyu Kim
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Performance ◽  
Nitrogen Doping ◽  
Cost Effective ◽  
Excellent Performance ◽  
Carbon Nanosheets ◽  
Nitrogen Doped ◽  
Production Of Hydrogen ◽  
Energy Conversion And Storage

Hydrogen-evolution reaction (HER) is a promising technology for renewable energy conversion and storage. Electrochemical HER can provide a cost-effective method for the clean production of hydrogen. In this study, a biomimetic eco-friendly approach to fabricate nitrogen-doped carbon nanosheets, exhibiting a high HER performance, and using a carbonized polydopamine (C-PDA), is described. As a biopolymer, polydopamine (PDA) exhibits high biocompatibility and can be easily obtained by an environmentally benign green synthesis with dopamine. Inspired by the polymerization of dopamine, we have devised the facile synthesis of nitrogen-doped nanocarbons using a carbonized polydopamine for the HER in acidic media. The N-doped nanocarbons exhibit excellent performance for H2 generation. The required overpotential at 5 mA/cm2 is 130 mV, and the Tafel slope is 45 mV/decade. Experimental characterizations confirm that the excellent performance of the N-doped nanocarbons can be attributed to the multisite nitrogen doping, while theoretical computations indicate the promotion effect of tertiary/aromatic nitrogen doping in enhancing the spin density of the doped samples and consequently in forming highly electroactive sites for HER applications.

scholarly journals Copper on carbon materials: stabilization by nitrogen doping

2017 ◽  
Vol 5 (21) ◽  
pp. 10574-10583 ◽  
Author(s):  
Dmitri A. Bulushev ◽  
Andrey L. Chuvilin ◽  
Vladimir I. Sobolev ◽  
Svetlana G. Stolyarova ◽  
Yury V. Shubin ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Formic Acid ◽  
Nitrogen Doping ◽  
Carbon Materials ◽  
Carbon Support ◽  
High Catalytic Activity ◽  
N Doping

N-doping of carbon support prevents sintering of Cu and provides its high catalytic activity in H2 formation from formic acid.

Enhancement of Pt-Based Catalysts via N-Doped Carbon Supports

2008 ◽  
Author(s):  
Ryan O’Hayre ◽  
Yingke Zhou ◽  
Robert Pasquarelli ◽  
Joe Berry ◽  
David Ginley
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction ◽  
Methanol Oxidation ◽  
Nitrogen Doping ◽  
Ion Beam ◽  
Catalyst Activity ◽  
Pt Catalyst ◽  
Activity Measurement ◽  
Pt Nanoparticle ◽  
N Doping

This study experimentally examines the enhancement of carbon supported Pt-based catalysts systems via nitrogen doping. It has been reported that nitrogen-containing carbons promote significant enhancement in Pt/C catalyst activity and durability with respect to the methanol oxidation and oxygen reduction reactions. In order to systematically investigate the effect of N-doping, in this work we have developed geometrically well-defined model catalytic systems consisting of tunable assemblies of Pt catalyst nanoparticles deposited onto both N-doped and undoped highly-oriented pyrolytic graphite (HOPG) substrates. N-doping was achieved via ion beam implantation, and Pt was electrodeposited from solutions of H2PtCl6 in aqueous HClO4. Morphology from scanning electron microscopy (SEM) and catalytic activity measurement from aqueous electrochemical analysis were utilized to examine the N-doping effects. The results strongly support the theory that doping nitrogen into a graphite support significantly affects both the morphology and behavior of the overlying Pt nanoparticles. In particular, nitrogen-doping was observed to cause a significant decrease in the average Pt nanoparticle size, an increase in the Pt nanoparticle dispersion, and a significant increase in catalytic activity for both methanol oxidation and oxygen reduction.

The controllable synthesis of substitutional and interstitial nitrogen-doped manganese dioxide: the effects of doping sites on enhancing the catalytic activity

2020 ◽  
Vol 8 (17) ◽  
pp. 8383-8396 ◽  
Author(s):  
Taohong He ◽  
Xiaoshan Zeng ◽  
Shaopeng Rong
Keyword(s):  
Catalytic Activity ◽  
Manganese Dioxide ◽  
Deep Insight ◽  
Controllable Synthesis ◽  
Nitrogen Doped ◽  
N Doping ◽  
Interstitial Nitrogen ◽  
A Site ◽  
Site Selective ◽  
Insight Into

N atoms were selectively doped at substitutional or interstitial sites in the MnO2 lattice using N2 plasma. This research provides a site-selective N-doping method and a deep insight into the different effects of doping sites.

scholarly journals Solid-state synthesis of few-layer cobalt-doped MoS2 with CoMoS phase on nitrogen-doped graphene driven by microwave irradiation for hydrogen electrocatalysis

RSC Advances ◽  
2020 ◽  
Vol 10 (56) ◽  
pp. 34323-34332
Author(s):  
Junpeng Fan ◽  
Joakim Ekspong ◽  
Anumol Ashok ◽  
Sergey Koroidov ◽  
Eduardo Gracia-Espino
Keyword(s):  
Catalytic Activity ◽  
Solid State ◽  
Microwave Irradiation ◽  
Hydrogen Evolution ◽  
Solid State Synthesis ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Production of nanostructured cobalt-doped MoS2 flakes with the CoMoS phase by microwave irradiation with improved catalytic activity towards hydrogen evolution.

scholarly journals Synthesis of amorphous and graphitized porous nitrogen-doped carbon spheres as oxygen reduction reaction catalysts

2020 ◽  
Vol 11 ◽  
pp. 1-15 ◽  
Author(s):  
Maximilian Wassner ◽  
Markus Eckardt ◽  
Andreas Reyer ◽  
Thomas Diemant ◽  
Michael S Elsaesser ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Nitrogen Content ◽  
Oxygen Reduction ◽  
Nitrogen Doping ◽  
Reduction Reaction ◽  
Model Systems ◽  
Carbon Sphere ◽  
Carbon Spheres ◽  
Nitrogen Doped ◽  
N Doping

Amorphous and graphitized nitrogen-doped (N-doped) carbon spheres are investigated as structurally well-defined model systems to gain a deeper understanding of the relationship between synthesis, structure, and their activity in the oxygen reduction reaction (ORR). N-doped carbon spheres were synthesized by hydrothermal treatment of a glucose solution yielding carbon spheres with sizes of 330 ± 50 nm, followed by nitrogen doping via heat treatment in ammonia atmosphere. The influence of a) varying the nitrogen doping temperature (550–1000 °C) and b) of a catalytic graphitization prior to nitrogen doping on the carbon sphere morphology, structure, elemental composition, N bonding configuration as well as porosity is investigated in detail. For the N-doped carbon spheres, the maximum nitrogen content was found at a doping temperature of 700 °C, with a decrease of the N content for higher temperatures. The overall nitrogen content of the graphitized N-doped carbon spheres is lower than that of the amorphous carbon spheres, however, also the microporosity decreases strongly with graphitization. Comparison with the electrocatalytic behavior in the ORR shows that in addition to the N-doping, the microporosity of the materials is critical for an efficient ORR.

Synergistic Effects of Nitrogen Doping on MXene for Enhancement of Hydrogen Evolution Reaction

2019 ◽  
Vol 7 (19) ◽  
pp. 16879-16888 ◽  
Author(s):  
Thi Anh Le ◽  
Quoc Viet Bui ◽  
Ngoc Quang Tran ◽  
Yunhee Cho ◽  
Yeseul Hong ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nitrogen Doping ◽  
Synergistic Effects

scholarly journals Nitrogen-doped RuS2 nanoparticles containing in situ reduced Ru as an efficient electrocatalyst for hydrogen evolution

RSC Advances ◽  
2020 ◽  
Vol 10 (30) ◽  
pp. 17862-17868 ◽  
Author(s):  
Yan Xu ◽  
Xiaoping Gao ◽  
Jingyan Zhang ◽  
Daqiang Gao
Keyword(s):  
Hydrogen Evolution ◽  
Nitrogen Doped ◽  
N Doping

The reasonable design that N-doping and in situ reduced Ru metal enhances the performance of N-RuS2/Ru for HER.

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