scholarly journals A ruthenium-based catalyst on carbon electrodes for electrochemical water splitting

2021 ◽  
Author(s):  
Lin Li ◽  
Biswanath Das ◽  
Ahibur Rahaman ◽  
Andrey Shatskiy ◽  
Fei Ye ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
State Of The Art ◽  
Cost Effective ◽  
Molecular Catalyst ◽  
Electrolysis Cells ◽  
Multi Walled Carbon Nanotubes ◽  
Energy Economy ◽  
Electrochemical Water Splitting ◽  
Walled Carbon Nanotubes

Electrochemical water splitting constitutes one of the most promising strategies for converting water into hydrogen-based fuels, and this technology is predicted to play a key role in our transition towards a carbon-neutral energy economy. To enable the design of cost-effective electrolysis cells based on this technology, new and more efficient anodes with augmented water splitting activity and stability will be required. Herein, we report an active molecular Ru-based catalyst for electrochemically-driven water oxidation and two simple methods for preparing anodes by attaching this catalyst onto multi-walled carbon nanotubes. The anodes modified with the molecular catalyst were characterized by a broad toolbox of microscopy and spectroscope techniques, and interestingly no RuO2 formation was detected during electrocatalysis over 4 h. These results demonstrate that the herein presented strategy can be used to prepare anodes that rival the performance of state-of-the-art metal oxide anodes.

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.

Rational design of cobalt–chromium layered double hydroxide as a highly efficient electrocatalyst for water oxidation

2016 ◽  
Vol 4 (29) ◽  
pp. 11292-11298 ◽  
Author(s):  
Chenlong Dong ◽  
Xiaotao Yuan ◽  
Xin Wang ◽  
Xiangye Liu ◽  
Wujie Dong ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Water Oxidation ◽  
High Performance ◽  
Rational Design ◽  
Cost Effective ◽  
Cobalt Chromium ◽  
Electrochemical Water Splitting ◽  
Double Hydroxide

The design of a high performance, stable and cost-effective electrocatalyst for oxygen evolution is crucial for H2 production from electrochemical water splitting.

scholarly journals Free-base Porphyrin Polymer for Bifunctional Electrochemical Water Splitting

2021 ◽  
Author(s):  
Yulu Ge ◽  
Zhenhua Lyu ◽  
Mariana Marcos Hernandez ◽  
Dino Villagran
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Precious Metals ◽  
Cost Effective ◽  
Economic Feasibility ◽  
Free Base ◽  
Bifunctional Electrocatalyst ◽  
Energy Demands ◽  
Production Of Hydrogen ◽  
Electrochemical Water Splitting

Projected future global energy demands require sustainable energy sources as alternatives to the current world dependence on hydrocarbon fuels. The production of hydrogen and oxygen gas from water is a promising approach. Currently, water-splitting electrolyzers require precious metals as electrocalysts because they are active and stable. Yet, replacement of these precious metals by cost-effective alternatives is necessary for the economic feasibility of this approach. Here, we describe a molecular based polymeric approach that effectively removes the need to use any metal to electrochemically split water. The incorporation of free-base porphyrin units into a 2D network structure yields a stable and efficient bifunctional electrocatalyst for water oxidation and water reduction that can operate for days at competitive overpotentials comparable to metal based ones. <br><br><br>

scholarly journals Free-base Porphyrin Polymer for Bifunctional Electrochemical Water Splitting

2021 ◽  
Author(s):  
Yulu Ge ◽  
Zhenhua Lyu ◽  
Mariana Marcos Hernandez ◽  
Dino Villagran
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Precious Metals ◽  
Cost Effective ◽  
Economic Feasibility ◽  
Free Base ◽  
Bifunctional Electrocatalyst ◽  
Energy Demands ◽  
Production Of Hydrogen ◽  
Electrochemical Water Splitting

Projected future global energy demands require sustainable energy sources as alternatives to the current world dependence on hydrocarbon fuels. The production of hydrogen and oxygen gas from water is a promising approach. Currently, water-splitting electrolyzers require precious metals as electrocalysts because they are active and stable. Yet, replacement of these precious metals by cost-effective alternatives is necessary for the economic feasibility of this approach. Here, we describe a molecular based polymeric approach that effectively removes the need to use any metal to electrochemically split water. The incorporation of free-base porphyrin units into a 2D network structure yields a stable and efficient bifunctional electrocatalyst for water oxidation and water reduction that can operate for days at competitive overpotentials comparable to metal based ones. <br><br><br>

One-step synthesis of multi-walled carbon nanotubes/ultra-thin Ni(OH)2 nanoplate composite as efficient catalysts for water oxidation

2014 ◽  
Vol 2 (30) ◽  
pp. 11799-11806 ◽  
Author(s):  
Xuemei Zhou ◽  
Zhaoming Xia ◽  
Zhiyun Zhang ◽  
Yuanyuan Ma ◽  
Yongquan Qu
Keyword(s):  
Carbon Nanotubes ◽  
Hydrothermal Synthesis ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Highly Efficient ◽  
Multi Walled Carbon Nanotubes ◽  
One Step ◽  
Walled Carbon Nanotubes

One-step hydrothermal synthesis of ultra-thin β-Ni(OH)2 nanoplates (1.5–3.0 nm thickness) and their composite with multi-walled carbon nanotubes in the absence of surfactants function as highly efficient and stable electrocatalysts for oxygen evolution reaction.

Zinc-telluride nanospheres as an efficient water oxidation electrocatalyst displaying a low overpotential for oxygen evolution

2019 ◽  
Vol 7 (46) ◽  
pp. 26410-26420 ◽  
Author(s):  
Maira Sadaqat ◽  
Laraib Nisar ◽  
Noor-Ul-Ain Babar ◽  
Fayyaz Hussain ◽  
Muhammad Naeem Ashiq ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Zinc Telluride ◽  
Low Overpotential ◽  
Electrochemical Water Splitting ◽  
Kinetics Of

Electrochemical water splitting is economically unviable due to the sluggish kinetics of the anodically uphill oxygen evolution reaction (OER).

Dye functionalized carbon nanotubes for photoelectrochemical water splitting – role of inner tubes

2016 ◽  
Vol 4 (7) ◽  
pp. 2473-2483 ◽  
Author(s):  
Yi Cheng ◽  
Amir Memar ◽  
Martin Saunders ◽  
Jian Pan ◽  
Chang Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Water Splitting ◽  
Water Oxidation ◽  
Photoelectrochemical Water Splitting ◽  
Oxidation Catalysts ◽  
Functionalized Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Dye functionalized double- and triple-walled carbon nanotubes are effective photoanodes for water splitting without the attachment of semiconductor and water oxidation catalysts.

Triple hierarchy and double synergies of NiFe/Co9S8/carbon cloth: a new and efficient electrocatalyst for the oxygen evolution reaction

Nanoscale ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 3378-3385 ◽  
Author(s):  
Changhong Zhan ◽  
Zheng Liu ◽  
Yang Zhou ◽  
Mingliang Guo ◽  
Xiaolin Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Oxidation Catalyst ◽  
Carbon Cloth ◽  
Electrochemical Water Splitting

Electrochemical water splitting requires an efficient water oxidation catalyst to accelerate the oxygen evolution reaction (OER).

scholarly journals Fabrication and Characterization of Polylactic Acid Electrospun Scaffolds Modified with Multi-Walled Carbon Nanotubes and Hydroxyapatite Nanoparticles

Biomimetics ◽  
2020 ◽  
Vol 5 (3) ◽  
pp. 43
Author(s):  
Athanasios Kotrotsos ◽  
Prokopis Yiallouros ◽  
Vassilis Kostopoulos
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Polylactic Acid ◽  
Physical And Mechanical Properties ◽  
Polymeric Materials ◽  
Cost Effective ◽  
Electrospinning Process ◽  
Wide Range ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The solution electrospinning process (SEP) is a cost-effective technique in which a wide range of polymeric materials can be electrospun. Electrospun materials can also be easily modified during the solution preparation process (prior SEP). Based on this, the aim of the current work is the fabrication and nanomodification of scaffolds using SEP, and the investigation of their porosity and physical and mechanical properties. In this study, polylactic acid (PLA) was selected for scaffold fabrication, and further modified with multi-walled carbon nanotubes (MWCNTs) and hydroxyapatite (HAP) nanoparticles. After fabrication, porosity calculation and physical and mechanical characterization for all scaffold types were conducted. More precisely, the morphology of the fibers (in terms of fiber diameter), the surface properties (in terms of contact angle) and the mechanical properties under the tensile mode of the fabricated scaffolds have been investigated and further compared against pristine PLA scaffolds (without nanofillers). Finally, the scaffold with the optimal properties was proposed as the candidate material for potential future cell culturing.

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