Synthesis of heteroatom-carbon nanosheets by solution plasma processing using N-methyl-2-pyrrolidone as precursor

RSC Advances ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 6990-6996 ◽  
Author(s):  
Koangyong Hyun ◽  
Tomonaga Ueno ◽  
Oi Lun Li ◽  
Nagahiro Saito
Keyword(s):  
Atmospheric Pressure ◽  
Room Temperature ◽  
Plasma Processing ◽  
Carbon Nanosheets ◽  
Layer Graphene ◽  
Solution Plasma Processing

Heteroatom-carbon nanosheets, composed of multi-layer graphene with turbostratic stacking, were successfully synthesized through a solution plasma processing (SPP) with N-methyl-2-pyrrolidone at room temperature and an atmospheric pressure.

scholarly journals Properties of Silicone Rubber-Based Composites Reinforced with Few-Layer Graphene and Iron Oxide or Titanium Dioxide

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1550
Author(s):  
Vineet Kumar ◽  
Anuj Kumar ◽  
Minseok Song ◽  
Dong-Joo Lee ◽  
Sung-Soo Han ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Titanium Dioxide ◽  
Iron Oxide ◽  
Stress Relaxation ◽  
Silicone Rubber ◽  
Room Temperature ◽  
Relaxation Rates ◽  
Layer Graphene ◽  
Few Layer Graphene ◽  
Mechanical Actuation

The increasing demand for polymer composites with novel or improved properties requires novel fillers. To meet the challenges posed, nanofillers such as graphene, carbon nanotubes, and titanium dioxide (TiO2) have been used. In the present work, few-layer graphene (FLG) and iron oxide (Fe3O4) or TiO2 were used as fillers in a room-temperature-vulcanized (RTV) silicone rubber (SR) matrix. Composites were prepared by mixing RTV-SR with nanofillers and then kept for vulcanization at room temperature for 24 h. The RTV-SR composites obtained were characterized with respect to their mechanical, actuation, and magnetic properties. Fourier-transform infrared spectroscopy (FTIR) analysis was performed to investigate the composite raw materials and finished composites, and X-ray photoelectron spectroscopy (XPS) analysis was used to study composite surface elemental compositions. Results showed that mechanical properties were improved by adding fillers, and actuation displacements were dependent on the type of nanofiller used and the applied voltage. Magnetic stress-relaxation also increased with filler amount and stress-relaxation rates decreased when a magnetic field was applied parallel to the deformation axes. Thus, this study showed that the inclusion of iron oxide (Fe3O4) or TiO2 fillers in RTV-SR improves mechanical, actuation, and magnetic properties.

scholarly journals Cat-CrNP as new material with catalytic properties for 2-chloro-2-propen-1-ol and ethylene oligomerizations

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jacek Malinowski ◽  
Dagmara Jacewicz ◽  
Artur Sikorski ◽  
Mariusz Urbaniak ◽  
Przemysław Rybiński ◽  
...  
Keyword(s):  
Complex Compound ◽  
Atmospheric Pressure ◽  
Room Temperature ◽  
Organometallic Compounds ◽  
Ethylene Oligomerization ◽  
High Catalytic Activity ◽  
New Material ◽  
Activity Requirement ◽  
Olefin Oligomerization ◽  
Xrd Method

AbstractThe contemporary search for new catalysts for olefin oligomerization and polymerization is based on the study of coordinating compounds and/or organometallic compounds as post-metallocene catalysts. However known catalysts are suffered by many flaws, among others unsatisfactory activity, requirement of high pressure or instability at high temperatures. In this paper, we present a new catalyst i.e. the crystalline complex compound possesing high catalytic activity in the oligomerization of olefins, such as 2-chloro-2-propen-1-ol and ethylene under very mild conditions (room temperature, 0.12 bar for ethylene oligomerization, atmospheric pressure for 2-chloro-2-propen-1-ol oligomerization). New material—Cat-CrNP ([nitrilotriacetato-1,10-phenanthroline]chromium(III) tetrahydrate) has been obtained as crystalline form of the nitrilotriacetate complex compound of chromium(III) with 1,10-phenanthroline and characterized in terms of its crystal structure by the XRD method and by multi-analytical investigations towards its physicochemical propeties The yield of catalytic oligomerization over Cat-CrNP reached to 213.92 g · mmol−1 · h−1· bar−1 and 3232 g · mmol−1 · h−1 · bar−1 for the 2-chloro-2-propen-1-ol and ethylene, respectively. Furthemore, the synthesis of Cat-CrNP is cheap, easy to perform and solvents used during preparation are environmentally friendly.

Microstructural characterization of gold nanoparticles synthesized by solution plasma processing

2011 ◽  
Vol 22 (45) ◽  
pp. 455701 ◽  
Author(s):  
Sung-Pyo Cho ◽  
Maria Antoaneta Bratescu ◽  
Nagahiro Saito ◽  
Osamu Takai
Keyword(s):  
Gold Nanoparticles ◽  
Plasma Processing ◽  
Microstructural Characterization ◽  
Solution Plasma Processing

scholarly journals Room-Temperature Gating of Molecular Junctions Using Few-Layer Graphene Nanogap Electrodes

Nano Letters ◽  
2011 ◽  
Vol 11 (11) ◽  
pp. 4607-4611 ◽  
Author(s):  
Ferry Prins ◽  
Amelia Barreiro ◽  
Justus W. Ruitenberg ◽  
Johannes S. Seldenthuis ◽  
Núria Aliaga-Alcalde ◽  
...  
Keyword(s):  
Room Temperature ◽  
Molecular Junctions ◽  
Layer Graphene ◽  
Nanogap Electrodes ◽  
Few Layer Graphene

Proliferation assay of mouse embryonic stem (ES) cells exposed to atmospheric-pressure plasmas at room temperature

2014 ◽  
Vol 47 (44) ◽  
pp. 445402 ◽  
Author(s):  
Taichi Miura ◽  
Ayumi Ando ◽  
Kazumi Hirano ◽  
Chika Ogura ◽  
Tatsuya Kanazawa ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Room Temperature ◽  
Es Cells ◽  
Embryonic Stem ◽  
Proliferation Assay ◽  
Atmospheric Pressure Plasmas
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