Fe, Co, N-functionalized carbon nanotubes in situ grown on 3D porous N-doped carbon foams as a noble metal-free catalyst for oxygen reduction

2015 ◽  
Vol 3 (7) ◽  
pp. 3559-3567 ◽  
Author(s):  
Ruizhong Zhang ◽  
Shuijian He ◽  
Yizhong Lu ◽  
Wei Chen
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction ◽  
Noble Metal ◽  
Carbon Foam ◽  
Functionalized Carbon Nanotubes ◽  
Metal Free ◽  
Electrocatalytic Performance ◽  
Carbon Foams

3D Fe, Co, N-functionalized carbon nanotubes grown on carbon foam were fabricated and the hybrid exhibited high ORR electrocatalytic performance.

Ionic liquid in situ functionalized carbon nanotubes as metal-free catalyst for efficient electrocatalytic hydrogen evolution reaction

Nanoscale ◽  
2021 ◽  
Author(s):  
Tianhao Li ◽  
Yanping Chen ◽  
Weihua Hu ◽  
Weiyong Yuan ◽  
Qichao Zhao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Transfer ◽  
Ionic Liquid ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Hydrogen Adsorption ◽  
Electron Acceptors ◽  
Functionalized Carbon Nanotubes ◽  
Metal Free

IL-functionalized CNTs are synthesized as efficient metal-free electrocatalyst, in which ILs regarding as electron acceptors facilitates the electron transfer and hydrogen adsorption, thereby enhancing the HER performance.

Electrostatically regulated ternary-doped carbon foams with exposed active sites as metal-free oxygen reduction electrocatalysts

Nanoscale ◽  
2018 ◽  
Vol 10 (41) ◽  
pp. 19498-19508 ◽  
Author(s):  
Md. Selim Arif Sher Shah ◽  
Jooyoung Lee ◽  
Ali Rauf ◽  
Jong Hyeok Park ◽  
Byungkwon Lim ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Active Sites ◽  
State Of The Art ◽  
Carbon Foam ◽  
The State ◽  
Viable Alternative ◽  
Free Oxygen ◽  
Metal Free ◽  
Carbon Foams ◽  
Co Doped

N, P and S co-doped carbon foam having exposed active sites can be a viable alternative to the state-of-the-art ORR electrocatalyst Pt, which suffers from high cost and stability.

scholarly journals Converting copper sulfide to copper with surface sulfur for electrocatalytic alkyne semi-hydrogenation with water

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yongmeng Wu ◽  
Cuibo Liu ◽  
Changhong Wang ◽  
Yifu Yu ◽  
Yanmei Shi ◽  
...  
Keyword(s):  
Binding Energy ◽  
Noble Metal ◽  
Atomic Hydrogen ◽  
Copper Sulfide ◽  
Low Cost ◽  
Water Electrolysis ◽  
Metal Free ◽  
Copper Nanowire

AbstractElectrocatalytic alkyne semi-hydrogenation to alkenes with water as the hydrogen source using a low-cost noble-metal-free catalyst is highly desirable but challenging because of their over-hydrogenation to undesired alkanes. Here, we propose that an ideal catalyst should have the appropriate binding energy with active atomic hydrogen (H*) from water electrolysis and a weaker adsorption with an alkene, thus promoting alkyne semi-hydrogenation and avoiding over-hydrogenation. So, surface sulfur-doped and -adsorbed low-coordinated copper nanowire sponges are designedly synthesized via in situ electroreduction of copper sulfide and enable electrocatalytic alkyne semi-hydrogenation with over 99% selectivity using water as the hydrogen source, outperforming a copper counterpart without surface sulfur. Sulfur anion-hydrated cation (S2−-K+(H2O)n) networks between the surface adsorbed S2− and K+ in the KOH electrolyte boost the production of active H* from water electrolysis. And the trace doping of sulfur weakens the alkene adsorption, avoiding over-hydrogenation. Our catalyst also shows wide substrate scopes, up to 99% alkenes selectivity, good reducible groups compatibility, and easily synthesized deuterated alkenes, highlighting the promising potential of this method.

Amine-functionalized multi-walled carbon nanotubes (EDA-MWCNTs) for electrochemical water splitting reactions

2021 ◽  
Author(s):  
Shankar S. Narwade ◽  
Shivsharan M. Mali ◽  
Bhaskar R. Sathe
Keyword(s):  
Carbon Nanotubes ◽  
Water Splitting ◽  
Metal Free ◽  
Overall Water Splitting ◽  
Amine Functionalized ◽  
Multi Walled Carbon Nanotubes ◽  
Electrochemical Water Splitting ◽  
Walled Carbon Nanotubes

A study on the in situ decoration of ethylenediamine (EDA) on acid functionalized multi-walled carbon nanotubes (O-MWCNTs) for overall water splitting reactions at all pH as an efficient and inexpensive metal-free multifunctional electrocatalyst.

scholarly journals In situ synthesis of metal embedded nitrogen doped carbon nanotubes as an electrocatalyst for the oxygen reduction reaction with high activity and stability

RSC Advances ◽  
2018 ◽  
Vol 8 (44) ◽  
pp. 25051-25056 ◽  
Author(s):  
Yanhong Yin ◽  
Hengbo Zhang ◽  
Rongzhen Gao ◽  
Aili Wang ◽  
Xinxin Mao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Activity ◽  
Reduction Reaction ◽  
In Situ Synthesis ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

In this work, a Co–N doped carbon nanotube (CNT) catalyst was fabricated via a simple pyrolysis approach.

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