Thin MoS2 nanosheets grafted MOFs-derived porous Co–N–C flakes grown on electrospun carbon nanofibers as self-supported bifunctional catalysts for overall water splitting

2017 ◽  
Vol 5 (45) ◽  
pp. 23898-23908 ◽  
Author(s):  
Dongxiao Ji ◽  
Shengjie Peng ◽  
Li Fan ◽  
Linlin Li ◽  
Xiaohong Qin ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Water Splitting ◽  
Carbon Nanofibers ◽  
Carbon Nanofiber ◽  
Bifunctional Catalysts ◽  
Mos2 Nanosheets ◽  
Overall Water Splitting ◽  
Nanofiber Film

A thin MoS2 nanosheets grafted MOF derived Co–N–C flake grown on electrospun carbon nanofiber film was designed and mass-produced. The material exhibited superior bifunctional catalytic activity for overall water splitting.

scholarly journals Electrospun Carbon Nanofibers with Embedded Co-Ceria Nanoparticles for Efficient Hydrogen Evolution and Overall Water Splitting

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 856 ◽  
Author(s):  
Seongwon Woo ◽  
Jooyoung Lee ◽  
Dong Sub Lee ◽  
Jung Kyu Kim ◽  
Byungkwon Lim
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Carbon Nanofibers ◽  
High Efficiency ◽  
Carbon Nanofiber ◽  
Ceria Nanoparticles ◽  
Overall Water Splitting ◽  
Lower Overpotential

In this study, simple electrospinning combined with pyrolysis were used to fabricate transition-metal-based-nanoparticle-incorporated carbon nanofiber (CNF) electrocatalysts for a high-efficiency hydrogen evolution reaction (HER) and overall water splitting. Co-CeO2 nanoparticle-incorporated carbon nanofibers (Co-CeO2@CNF) exhibit an outstanding electrocatalytic HER performance with an overpotential and Tafel slope of 92 mV and 54 mV/dec, respectively. For the counterpart, electrolysis, we incorporate the widely used Ni2Fe catalyst with a high oxygen evolution reaction (OER) activity into the carbon nanofiber (Ni2Fe@CNF). To evaluate their electrochemical properties for the overall water splitting, Co-CeO2@CNF and Ni2Fe@CNF were used as the HER and OER electrocatalysts in an alkaline electrolyzer. With the paired Co-CeO2@CNF and Ni2Fe@CNF electrodes, an overall water splitting current density of 10 mA/cm2 was achieved by applying 1.587 V across the electrodes with a remarkably lower overpotential of 257 mV compared to that of an electrolyzer comprised of Pt/C and IrO2 electrodes (400 mV). Owing to the conformal incorporation of nanoparticles into the CNF, the electrocatalysts exhibit significant long-term durability over 70 h of overall water splitting. This study provides rational designs of catalysts with high electrochemical catalytic activity and durability to achieve overall water splitting.

Design and synthesis of porous channel-rich carbon nanofibers for self-standing oxygen reduction reaction and hydrogen evolution reaction bifunctional catalysts in alkaline medium

2017 ◽  
Vol 5 (16) ◽  
pp. 7507-7515 ◽  
Author(s):  
Dongxiao Ji ◽  
Shengjie Peng ◽  
Jia Lu ◽  
Linlin Li ◽  
Shengyuan Yang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Hydrogen Evolution ◽  
Carbon Nanofibers ◽  
Hydrogen Evolution Reaction ◽  
Carbon Nanofiber ◽  
Reduction Reaction ◽  
Bifunctional Catalysts ◽  
Free Standing ◽  
Design And Synthesis

Free-standing Fe3C embedded Fe/N doped carbon nanofiber films are prepared based on electrospinning and demonstrate efficient ORR/HER catalytic activity and superior stability.

Construction of hierarchical IrTe nanotubes with assembled nanosheets for overall water splitting electrocatalysis

2021 ◽  
Author(s):  
Ziqiang Wang ◽  
Peng Wang ◽  
Hugang Zhang ◽  
Wenjing Tian ◽  
You Xu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Bifunctional Catalysts ◽  
Overall Water Splitting ◽  
Electrochemical Water Splitting

The design of efficient bifunctional catalysts for hydrogen and oxygen evolution reactions is significant for electrochemical water splitting. Here, hierarchical IrTe nanotubes (NTs) with assembled nanosheets have been prepared through...

Self-supported molybdenum doping Ni3S2 nanoneedles as efficient bifunctional catalysts for overall water splitting

2020 ◽  
Vol 44 (20) ◽  
pp. 8578-8586
Author(s):  
Jinhui Li ◽  
Zhi Yang ◽  
Yu Lin ◽  
Jinlei Wang ◽  
Feixiang Jiao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Bifunctional Catalysts ◽  
Overall Water Splitting ◽  
Electrocatalytic Performance ◽  
Molybdenum Doping

The as-obtained grass-like Ni3S2/NF-3 nanoneedle electrode exhibited superior electrocatalytic performance and extraordinary durability for the OER, the HER, and overall water splitting.

Directly grown TiO2 nanotubes on carbon nanofibers for photoelectrochemical water splitting

MRS Advances ◽  
2016 ◽  
Vol 1 (46) ◽  
pp. 3145-3150 ◽  
Author(s):  
Hyungkyu Han ◽  
Stepan Kment ◽  
Anandarup Goswami ◽  
Ondrej Haderka ◽  
Radek Zboril
Keyword(s):  
Water Splitting ◽  
Carbon Nanofibers ◽  
Carbon Nanostructures ◽  
Carbon Nanofiber ◽  
Anatase Phase ◽  
Photoelectrochemical Cells ◽  
High Electron ◽  
Electrospinning Technique ◽  
Intimate Contact ◽  
Electron Hole Pair

ABSTRACTA variety of Titanium dioxide (TiO2) phases and nanostructures have been explored for their applications in photoelectrochemical cells (PECs) for solar-driven water splitting. In this case, anatase phase and TiO2 nanotubes offer significant advantages especially for PEC-based applications. Though, significant efforts have already been engaged to combine the advantages from both the fields, poor activation and the high electron-hole pair recombination rate of TiO2 electrodes, originating from intrinsic physicochemical properties, limits its practical use. As an alternative, we report directly grown TiO2 nanotubes (synthesized on Fluorine doped Tin Oxide (FTO) via facile electrospinning technique) on carbon nanofibers, using hydrothermal method. The hierarchical branch type configuration has an intimate contact between the TiO2 nanotube and carbon nanofiber backbone and offers higher photocatalytic activity than their respective individual components (namely TiO2 nanotubes and carbon nanostructures).

Molybdenum Carbide‐Embedded Multichannel Hollow Carbon Nanofibers as Bifunctional Catalysts for Water Splitting

2020 ◽  
Vol 15 (13) ◽  
pp. 1957-1962 ◽  
Author(s):  
Changchun Ji ◽  
Guang Yang ◽  
P. Robert Ilango ◽  
Junnan Song ◽  
Deshuang Yu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Carbon Nanofibers ◽  
Molybdenum Carbide ◽  
Bifunctional Catalysts ◽  
Hollow Carbon

Design of high-performance MoS2 edge supported single-metal atom bifunctional catalysts for overall water splitting via a simple equation

Nanoscale ◽  
2019 ◽  
Vol 11 (42) ◽  
pp. 20228-20237 ◽  
Author(s):  
Xiaopei Xu ◽  
Haoxiang Xu ◽  
Daojian Cheng
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Metal Atom ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Simple Equation ◽  
Bifunctional Catalysts ◽  
Overall Water Splitting

MoS2 edges exhibit good hydrogen evolution reaction (HER) activity but poor oxygen evolution reaction (OER) activity.

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