Simultaneous Hydrogen and Oxygen Evolution Reactions using Free-Standing Nitrogen-Doped-Carbon-Co/CoOx Nanofiber Electrodes Decorated with Palladium Nanoparticles

2021 ◽  
Author(s):  
Ahmed Barhoum ◽  
Heba Hassan El-Maghrabi ◽  
Amr Ahmed Nada ◽  
Syreina SAYEGH ◽  
stephanie roualdes-boutevin ◽  
...  
Keyword(s):  
Palladium Nanoparticles ◽  
Electrode Materials ◽  
Carbon Nanofiber ◽  
Hydrogen Fuel ◽  
Fuel Production ◽  
Free Standing ◽  
Nitrogen Doped ◽  
Electrochemical Water Splitting ◽  
Nitrogen Doped Carbon ◽  
Critical Challenge

Designing efficient electrode materials for electrochemical water splitting is the most critical challenge for next-generation hydrogen fuel production. This study describes the development of free-standing nitrogen-doped carbon nanofiber (N-CNF) electrodes...

(Z)-Selective Partial Hydrogenation of Internal Alkynes by Using Palladium Nanoparticles Supported on Nitrogen-Doped Carbon Nanofiber

ChemCatChem ◽  
2012 ◽  
Vol 4 (6) ◽  
pp. 778-781 ◽  
Author(s):  
Youngjin Lee ◽  
Yukihiro Motoyama ◽  
Keita Tsuji ◽  
Seong-Ho Yoon ◽  
Isao Mochida ◽  
...  
Keyword(s):  
Palladium Nanoparticles ◽  
Carbon Nanofiber ◽  
Partial Hydrogenation ◽  
Nitrogen Doped ◽  
Internal Alkynes ◽  
Nitrogen Doped Carbon

scholarly journals 3D Self-Supported Nitrogen-Doped Carbon Nanofiber Electrodes Incorporated Co/CoOx Nanoparticles: Application to Dyes Degradation by Electro-Fenton-Based Process

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2686
Author(s):  
Ahmed Barhoum ◽  
Therese Favre ◽  
Syreina Sayegh ◽  
Fida Tanos ◽  
Emerson Coy ◽  
...  
Keyword(s):  
Carbon Nanofiber ◽  
Cobalt Acetate ◽  
Electrochemical Analysis ◽  
Nitrogen Atmosphere ◽  
Acetate Solution ◽  
Acid Orange 7 ◽  
Free Standing ◽  
Nitrogen Doped ◽  
Toc Removal ◽  
Nitrogen Doped Carbon

We developed free-standing nitrogen-doped carbon nanofiber (CNF) electrodes incorporating Co/CoOx nanoparticles (NPs) as a new cathode material for removing Acid Orange 7 (AO7; a dye for wool) from wastewater by the heterogeneous electro-Fenton reaction. We produced the free-standing N-doped CNF electrodes by electrospinning a polyacrylonitrile (PAN) and cobalt acetate solution followed by thermal carbonation of the cobalt acetate/PAN nanofibers under a nitrogen atmosphere. We then investigated electro-Fenton-based removal of AO7 from wastewater with the free-standing N-doped-CNFs-Co/CoOx electrodes, in the presence or not of Fe2+ ions as a co-catalyst. The electrochemical analysis showed the high stability of the prepared N-doped-CNF-Co/CoOx electrodes in electrochemical oxidation experiments with excellent degradation of AO7 (20 mM) at acidic to near neutral pH values (3 and 6). Electro-Fenton oxidation at 10 mA/cm2 direct current for 40 min using the N-doped-CNF-Co/CoOx electrodes loaded with 25 wt% of Co/CoOx NPs led to complete AO7 solution decolorization with total organic carbon (TOC) removal values of 92.4% at pH 3 and 93.3% at pH 6. The newly developed N-doped-CNF-Co/CoOx electrodes are an effective alternative technique for wastewater pre-treatment before the biological treatment.

Free-standing nitrogen-doped carbon nanofiber films as highly efficient electrocatalysts for oxygen reduction

Nanoscale ◽  
2013 ◽  
Vol 5 (20) ◽  
pp. 9528 ◽  
Author(s):  
Dong Liu ◽  
Xueping Zhang ◽  
Zaicheng Sun ◽  
Tianyan You
Keyword(s):  
Oxygen Reduction ◽  
Carbon Nanofiber ◽  
Free Standing ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Nitrogen Doped Carbon

scholarly journals Boosting the electrochemical performance of carbon cloth negative electrodes by constructing hierarchically porous nitrogen-doped carbon nanofiber layers for all-solid-state asymmetric supercapacitors

2019 ◽  
Vol 3 (1) ◽  
pp. 25-31 ◽  
Author(s):  
Ya-Nan Liu ◽  
Jia-Nan Zhang ◽  
Hai-Tao Wang ◽  
Xiao-Hui Kang ◽  
Shao-Wei Bian
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Electrode Materials ◽  
Carbon Nanofiber ◽  
Fiber Surface ◽  
Carbon Cloth ◽  
Asymmetric Supercapacitors ◽  
Nitrogen Doped ◽  
Negative Electrodes ◽  
Nitrogen Doped Carbon

Rationally functionalizing a carbon cloth fiber surface with 3D porous nitrogen-doped carbon nanofiber layers can significantly enhance the electrochemical performance of carbon cloth electrode materials.

scholarly journals A Review of Electrospun Carbon Nanofiber-Based Negative Electrode Materials for Supercapacitors

Electrochem ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 236-250
Author(s):  
Arjun Prasad Tiwari ◽  
Tanka Mukhiya ◽  
Alagan Muthurasu ◽  
Kisan Chhetri ◽  
Minju Lee ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrode Materials ◽  
Carbon Nanofiber ◽  
Negative Electrode ◽  
Smart Devices ◽  
Potential Candidate ◽  
Free Standing ◽  
High Capacitance ◽  
Negative Electrode Materials ◽  
Carbon Based

The development of smart negative electrode materials with high capacitance for the uses in supercapacitors remains challenging. Although several types of electrode materials with high capacitance in energy storage have been reported, carbon-based materials are the most reliable electrodes due to their high conductivity, high power density, and excellent stability. The most common complaint about general carbon materials is that these electrode materials can hardly ever be used as free-standing electrodes. Free-standing carbon-based electrodes are in high demand and are a passionate topic of energy storage research. Electrospun nanofibers are a potential candidate to fill this gap. However, the as-spun carbon nanofibers (ECNFs) have low capacitance and low energy density on their own. To overcome the limitations of pure CNFs, increasing surface area, heteroatom doping and metal doping have been chosen. In this review, we introduce the negative electrode materials that have been developed so far. Moreover, this review focuses on the advances of electrospun nanofiber-based negative electrode materials and their limitations. We put forth a future perspective on how these limitations can be overcome to meet the demands of next-generation smart devices.

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