scholarly journals Structural rearrangements of Ru nanoparticles supported on carbon nanotubes under microwave irradiation

2011 ◽  
Vol 47 (38) ◽  
pp. 10716 ◽  
Author(s):  
Bingsen Zhang ◽  
Xiaojuan Ni ◽  
Wei Zhang ◽  
Lidong Shao ◽  
Qiang Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Microwave Irradiation ◽  
Structural Rearrangements ◽  
Ru Nanoparticles

Functionalization of Single-Walled Carbon Nanotubes through 1,3-Cyclo­addition of Carbonyl Ylides under Microwave Irradiation

Synlett ◽  
2012 ◽  
Vol 23 (10) ◽  
pp. 1459-1462 ◽  
Author(s):  
Giancarlo Cravotto ◽  
Silvia Tagliapietra ◽  
Emanuela Gaudino ◽  
Sonja Visentin ◽  
Valentina Mussi
Keyword(s):  
Carbon Nanotubes ◽  
Microwave Irradiation ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Ionic liquids plus microwave irradiation: a general methodology for the retro-functionalization of single-walled carbon nanotubes

Nanoscale ◽  
2018 ◽  
Vol 10 (33) ◽  
pp. 15782-15787 ◽  
Author(s):  
Myriam Barrejón ◽  
Zois Syrgiannis ◽  
Maurizio Prato
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquids ◽  
Microwave Irradiation ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
General Methodology ◽  
Walled Carbon Nanotubes

Tunable functionalization of SWCNTs through the use of ionic liquids under microwave irradiation.

Carbon Nanotube Reinforced Fused Deposition Modeling Using Microwave Irradiation

2016 ◽  
Author(s):  
Meng Zhang ◽  
Xiaoxu Song ◽  
Weston Grove ◽  
Emmett Hull ◽  
Z. J. Pei ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Additive Manufacturing ◽  
Microwave Irradiation ◽  
Computer Aided Design ◽  
Fused Deposition Modeling ◽  
Layer By Layer ◽  
Sem Images ◽  
Fused Deposition ◽  
Deposition Modeling

Additive manufacturing (AM) is a class of manufacturing processes where material is deposited in a layer-by-layer fashion to fabricate a three-dimensional part directly from a computer-aided design model. With a current market share of 44%, thermoplastic-based additive manufacturing such as fused deposition modeling (FDM) is a prevailing technology. A key challenge for AM parts (especially for parts made by FDM) in engineering applications is the weak inter-layer adhesion. The lack of bonding between filaments usually results in delamination and mechanical failure. To address this challenge, this study embedded carbon nanotubes into acrylonitrile butadiene styrene (ABS) thermoplastics via a filament extrusion process. The vigorous response of carbon nanotubes to microwave irradiation, leading to the release of a large amount of heat, is used to melt the ABS thermoplastic matrix adjacent to carbon nanotubes within a very short time period. This treatment is found to enhance the inter-layer adhesion without bulk heating to deform the 3D printed parts. Tensile and flexural tests were performed to evaluation the effects of microwave irradiation on mechanical properties of the specimens made by FDM. Scanning electron microscopic (SEM) images were taken to characterize the fracture surfaces of tensile test specimens. The actual carbon nanotube contents in the filaments were measured by conducting thermogravimetric analysis (TGA). The effects of microwave irradiation on the electrical resistivity of the filament were also reported.

Improvement of lithium anode deterioration for ameliorating cyclabilities of non-aqueous Li–CO2 batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (15) ◽  
pp. 8385-8396 ◽  
Author(s):  
Chih-Jung Chen ◽  
Jun-Jie Yang ◽  
Chien-Hung Chen ◽  
Da-Hua Wei ◽  
Shu-Fen Hu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Anode ◽  
Ru Nanoparticles

Herein, ruthenium (Ru) nanoparticles were anchored on carbon nanotubes (Ru/CNTs) functionalized as catalyst cathodes for non-aqueous Li–CO2 cells.

An Integrated Sonication Technique for Electrodeposition of Platinum and Ruthenium on Carbon Nanotubes for Methanol Oxidation

2012 ◽  
Vol 9 (4) ◽  
Author(s):  
Tsung-Kuang Yeh ◽  
Yu-Ming Chang ◽  
Chuen-Horng Tsai ◽  
Ming-Chi Tsai ◽  
Mei-Ya Wang
Keyword(s):  
Carbon Nanotubes ◽  
Sulfuric Acid ◽  
Methanol Oxidation ◽  
Cyclic Voltammogram ◽  
Electrochemical Characteristics ◽  
H2so4 Solution ◽  
Peak Current Density ◽  
Surface Distribution ◽  
Ru Nanoparticles ◽  
Sonication Technique

An electrodeposition technique that could significantly improve the deposition of platinum-ruthenium (Pt-Ru) nanoparticles onto carbon nanotubes (CNTs) directly grown on carbon cloths was adopted in this study. Integrated sonication (IS) was activated during the electrodeposition process conducted in a sulfuric acid (H2SO4) solution containing Pt and Ru precursor chemicals of hexachloroplatinic acid and ruthenium trichloride, respectively, and ethylene glycol (EG) as a dispersing agent. In comparison with our earlier work, this new technique would further reduce the size of Pt-Ru particles from 4-6 nm to 2-3 nm and lead to a more even and higher surface distribution of these nanoparticles on the CNTs. In addition, the loadings of Pt and Ru on the CNTs were both markedly increased. Electrochemical characteristics of methanol oxidation on specimens bearing these catalysts (Pt-Ru/CNTs) were investigated via cyclic voltammetry analysis in mixed 1 M methanol and 0.5 M sulfuric acid solutions. It was found that the peak current density of methanol oxidation obtained from the cyclic voltammogram on the new Pt-Ru/CNTs specimen was nearly three times of that on the specimen prepared with EG in the absence of IS. The outcome signified better catalyst morphology and distribution and a significantly improved methanol oxidation efficiency of the new specimen prepared in the mixed EG and H2SO4 solution by electrodeposition in the presence of IS.

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