Investigating the voltammetric reduction of methylviologen at gold and carbon based electrode materials. Evidence for a surface bound adsorption mechanism leading to electrode ‘protection’ using multi-walled carbon nanotubes

2008 ◽  
Vol 32 (9) ◽  
pp. 1628 ◽  
Author(s):  
Lei Xiao ◽  
Gregory G. Wildgoose ◽  
Richard G. Compton
Keyword(s):  
Carbon Nanotubes ◽  
Adsorption Mechanism ◽  
Electrode Materials ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Carbon Based

Electrochemical Synthesis Partially Unzipped Multi-Walled Carbon Nanotubes as Electrode Materials for Fuel Cells

2019 ◽  
Vol 95 (1) ◽  
pp. 273-282
Author(s):  
Michail Olegovich Danilov ◽  
Igor A Rusetskii ◽  
Galina I Dovbeshko ◽  
Andrii Nikolenko ◽  
Sergii Fomanyuk ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Electrochemical Synthesis ◽  
Electrode Materials ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

scholarly journals Assessing the colloidal properties of engineered nanoparticles in water: case studies from fullerene C60 nanoparticles and carbon nanotubes

2010 ◽  
Vol 7 (1) ◽  
pp. 10 ◽  
Author(s):  
Kai Loon Chen ◽  
Billy A. Smith ◽  
William P. Ball ◽  
D. Howard Fairbrother
Keyword(s):  
Carbon Nanotubes ◽  
Physicochemical Properties ◽  
Case Studies ◽  
Fullerene C60 ◽  
Engineered Nanoparticles ◽  
Aquatic Systems ◽  
Colloidal Properties ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Carbon Based

Environmental context. The fate and bioavailability of engineered nanoparticles in natural aquatic systems are strongly influenced by their ability to remain dispersed in water. Consequently, understanding the colloidal properties of engineered nanoparticles through rigorous characterisation of physicochemical properties and measurements of particle stability will allow for a more accurate prediction of their environmental, health, and safety effects in aquatic systems. This review highlights some important techniques suitable for the assessment of the colloidal properties of engineered nanoparticles and discusses some recent findings obtained by using these techniques on two popular carbon-based nanoparticles, fullerene C60 and multi-walled carbon nanotubes. Abstract. The colloidal properties of engineered nanoparticles directly affect their use in a wide variety of applications and also control their environmental fate and mobility. The colloidal stability of engineered nanoparticles depends on their physicochemical properties within the given aqueous medium and is ultimately reflected in the particles’ aggregation and deposition behaviour. This review presents some of the key experimental methods that are currently used to probe colloidal properties and quantify engineered nanoparticle stability in water. Case studies from fullerene C60 nanoparticles and multi-walled carbon nanotubes illustrate how the characterisation and measurement methods are used to understand and predict nanoparticle fate in aquatic systems. Consideration of the comparisons between these two classes of carbon-based nanoparticles provides useful insights into some major current knowledge gaps while also revealing clues about needed future developments. Key issues to be resolved relate to the nature of near-range surface forces and the origins of surface charge, particularly for the reportedly unmodified or ‘pure’ carbon-based nanoparticles.

Multi-walled carbon nanotubes as electrode material for microbial fuel cells

2012 ◽  
Vol 65 (7) ◽  
pp. 1208-1214 ◽  
Author(s):  
N. Thepsuparungsikul ◽  
N. Phonthamachai ◽  
H. Y. Ng
Keyword(s):  
Carbon Nanotubes ◽  
Surface Area ◽  
Microbial Fuel Cells ◽  
Electricity Generation ◽  
Electrode Materials ◽  
Innovative Technology ◽  
Carbon Paper ◽  
Carbon Cloth ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The microbial fuel cell (MFC) is a novel and innovative technology that could allow direct harvesting of energy from wastewater through microbial activity with simultaneous oxidation of organic matter in wastewater. Among all MFC parts, electrode materials play a crucial role in electricity generation. A variety of electrode materials have been used, including plain graphite, carbon paper and carbon cloth. However, these electrode materials generated only limited electricity or power. Recently, many research studies have been conducted on carbon nanotubes (CNTs) because of their unique physical and chemical properties that include high conductivity, high surface area, corrosion resistance, and electrochemical stability. These properties make them extremely attractive for fabricating electrodes and catalyst supports. In this study, CNT-based electrodes had been developed to improve MFC performance in terms of electricity generation and treatment efficiency. Multi-walled carbon nanotubes (MWCNTs) with carboxyl groups have been employed to fabricate electrodes for single-chamber air-cathode MFCs. The quality of the prepared MWCNTs-based electrodes was evaluated by morphology, electrical conductivity and specific surface area using a field emission scanning electron microscope, four-probe method and Brunauer–Emmerr–Teller method, respectively. The performance of MFCs equipped with MWCNT-based electrodes was evaluated by chemical analysis and electrical monitoring and calculation. In addition, the performance of these MFCs, using MWCNTs as electrodes, was compared against that using commercial carbon cloth.

H 2 adsorption mechanism in Mg modified multi-walled carbon nanotubes for hydrogen storage

2012 ◽  
Vol 37 (2) ◽  
pp. 1919-1926 ◽  
Author(s):  
Ali Reyhani ◽  
Seyedeh Zahra Mortazavi ◽  
Soghra Mirershadi ◽  
Ahmad Nozad Golikand ◽  
Alireaza Z. Moshfegh
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Storage ◽  
Adsorption Mechanism ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes
Sign in / Sign up

Export Citation Format

Share Document