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Showing 1-30 of 77 results for "496588" within Papers
Antoine Allanore et al.
Nature, 497(7449), 353-356 (2013-05-10)
Molten oxide electrolysis (MOE) is an electrometallurgical technique that enables the direct production of metal in the liquid state from oxide feedstock, and compared with traditional methods of extractive metallurgy offers both a substantial simplification of the process and a
Li Wu et al.
Nucleic acids research, 42(21), doi:10-doi:10 (2014-09-25)
Nucleic acids have become a powerful tool in nanotechnology because of their controllable diverse conformational transitions and adaptable higher-order nanostructure. Using single-stranded DNA probes as the pore-caps for various target recognition, here we present an ultrasensitive universal electrochemical detection system
Hatef Sadeghi
Journal of nanoscience and nanotechnology, 14(6), 4178-4184 (2014-04-18)
The analytical electrical transport model of the Silicene, a single layer of sp3 bonded silicon atoms in the honeycomb lattice structure as a channel in the field effect transistor configuration is presented in this paper. Although the carrier concentration of
Raffaello Mazzaro et al.
ChemistryOpen, 4(3), 268-273 (2015-08-08)
Graphene-metal composites have potential as novel catalysts due to their unique electrical properties. Here, we report the synthesis of a composite material comprised of monodispersed platinum nanoparticles on high-quality graphene obtained by using two different exfoliation techniques. The material, prepared
Sunhye Yang et al.
Journal of nanoscience and nanotechnology, 13(5), 3747-3751 (2013-07-19)
The structure of needle coke was changed to graphite oxide structure after oxidation treatment with 70 wt.% of nitric acid and sodium chlorate (NaClO3), and the inter-layer distance of the oxidized needle coke was expanded to 6.9 angstroms. The first
PingHeng Tan et al.
Philosophical transactions. Series A, Mathematical, physical, and engineering sciences, 362(1824), 2289-2310 (2004-10-16)
Planar graphite has been extensively studied by Raman scattering for years. A comparative Raman study of several different and less common non-planar graphitic materials is given here. New kinds of graphite whiskers and tubular graphite cones (synthetic and natural) have
Jungsoo Kim et al.
Journal of nanoscience and nanotechnology, 13(5), 3387-3391 (2013-07-19)
Graphene was coated on low carbon steel (SS400) by electro spray coating method to improve its properties of corrosion resistance and contact resistance. Exfoliated graphite was made of the graphite by chemical treatment (Chemically Converted Graphene, CCG). CCG is distributed
Jong-Jun Baek et al.
Journal of nanoscience and nanotechnology, 13(11), 7418-7423 (2013-11-20)
Graphene has recently been the focus of a great deal of attention owing to its outstanding properties, which include high mobility, high thermal conductivity and high structural stability. In this study, a few layer graphene was successfully synthesized from methane
Anuj Girdhar et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(42), 16748-16753 (2013-10-02)
By using the nonequilibrium Green's function technique, we show that the shape of the edge, the carrier concentration, and the position and size of a nanopore in graphene nanoribbons can strongly affect its electronic conductance as well as its sensitivity
Rajneesh Mohan et al.
Journal of nanoscience and nanotechnology, 13(5), 3573-3576 (2013-07-19)
Here we report the fabrication and characteristics of graphene oxide (GO) field effect transistor gated with piezopotential of ZnO fine wires on a flexible substrate. The FET device consists of GO thin film on the bottom and ZnO piezoelectric fine
Jae-Hun Yang et al.
Journal of nanoscience and nanotechnology, 13(11), 7487-7492 (2013-11-20)
Recently, graphitic carbon nitride (g-C3N4) materials have received a great attention from many researchers due to their various roles as a visible light harvesting photocatalyst, metal-free catalyst, reactive template, nitrogen source of nitridation reaction, etc. g-C3N4 could be prepared by
Huimin Bao et al.
Journal of chromatography. A, 1310, 74-81 (2013-09-04)
In this report, trypsin was covalently immobilized in the graphene oxide (GO)-silica composite coating on the channel wall of poly(methyl methacrylate) (PMMA) microchips to fabricate microfluidic bioreactors for highly efficient proteolysis. A mixture solution containing GO nanosheets and silica gel
Gunasekaran Venugopal et al.
Journal of nanoscience and nanotechnology, 13(5), 3515-3518 (2013-07-19)
In this article, we attempted a study on field effect transport characteristics of graphene flakes. These graphene flakes were exfoliated by mechanical peeling-off technique and the electrical contacts were patterned by photo-lithographic method. Graphene devices have shown better transfer characteristics
Xun Gong et al.
Small (Weinheim an der Bergstrasse, Germany), 15(37), e1901468-e1901468 (2019-07-25)
Colloidal dispersions of nanomaterials are often polydisperse in size, significantly complicating their characterization. This is particularly true for materials early in their historical development due to synthetic control, dispersion efficiency, and instability during storage. Because a wide range of system
Niranjanmurthi Lingappan et al.
Journal of nanoscience and nanotechnology, 13(5), 3719-3722 (2013-07-19)
Graphene nanosheets functionalized with poly(p-phenylenediamine) (PPDA) were prepared via the in-situ chemical oxidative polymerization using potassium persulphate as a catalyst. Graphene nanosheets were previously prepared by chemical reduction of exfoliated graphite oxide. The structure and morphology of the composite material
Shibin Li et al.
Chemosphere, 112, 62-69 (2014-07-23)
With a dramatic rise in complexity, needs of nanotoxicology research go beyond simple forms of nanomaterials. This study compared the phototoxicity of nano-TiO2 and graphene-TiO2 nanocomposite (GNP). GNP was synthesized based on a hydrothermal method, which simultaneously performed the reduction
Yiru Qin et al.
Toxicology, 327, 62-76 (2014-12-03)
The biomedical application of graphene quantum dots (GQDs) is a new emerging area. However, their safety data are still in scarcity to date. Particularly, the effect of GQDs on the immune system remains unknown. This study aimed to elucidate the
Li-Ping Xu et al.
Journal of nanoscience and nanotechnology, 13(2), 1226-1231 (2013-05-08)
In this paper, to elucidate the hydrogen bond effect on the assembly behavior, we studied the assembly structures of two carboxylic substituted thiophene derivatives on highly oriented pyrolytic graphite (HOPG) by scanning tunneling microscopy. Here thiophene-2-carboxylic acid (TCA) and thiophene-2,5-dicarboxylic
Chuan-Qi Zhao et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 67(10), 2307-2313 (2013-05-17)
In the current study, graphene oxide (GO)-modified polypropylene non-woven fabric (PP-NWF) membranes were prepared via inkjet printing and immersion coating methods. Scanning electron microscopy, Fourier transform infrared spectroscopy, contact angle measurements, pure water permeation (JPWP) and protein adsorption were tested
Stephanie Reich et al.
Philosophical transactions. Series A, Mathematical, physical, and engineering sciences, 362(1824), 2271-2288 (2004-10-16)
We present a review of the Raman spectra of graphite from an experimental and theoretical point of view. The disorder-induced Raman bands in this material have been a puzzling Raman problem for almost 30 years. Double-resonant Raman scattering explains their
Xueque You et al.
Journal of nanoscience and nanotechnology, 13(11), 7349-7357 (2013-11-20)
We have reported the preparation and characterization of a novel, freestanding, paper-like graphene (G)-poly(diallyldimethylammoniumchloride) (PDDA)-Fe3O4 nanoparticles (NPs) composite. This G-based flexible buckypaper (BP) composed of stacked G-PDDA-NP platelets exhibited excellent mechanical properties, superior electrical properties, and enzyme mimetic activity, making
Jin-Gang Yu et al.
The Science of the total environment, 502, 70-79 (2014-09-23)
Due to their high adsorption capacities, carbon-based nanomaterials such as carbon nanotubes, activated carbons, fullerene and graphene are widely used as the currently most promising functional materials. Since its discovery in 2004, graphene has exhibited great potential in many technological
Xianglei Kong et al.
Journal of nanoscience and nanotechnology, 14(7), 4719-4732 (2014-04-25)
This paper reviews the up-to-date research about the applications of graphene and its related materials in the field of mass spectrometry (MS). Due to its large surface area, delocalized pi-electrons, thermal conductivity, stability and rich interaction chemistry, graphene has been
Seung Tae Jungo et al.
Journal of nanoscience and nanotechnology, 13(11), 7358-7364 (2013-11-20)
In order to overcome the difficulty of dispersion and low conductivity in composite containing graphene, graphene oxide (GO) has been used instead of neat graphene. And the GO treated by radiation, could give improved conductivity of the GO-containing polymer composite.
Yoon Jae Lee et al.
Journal of nanoscience and nanotechnology, 13(12), 7944-7949 (2013-11-26)
Graphene-containing carbon aerogel was prepared by a polycondensation of resorcinol with formaldehyde using chemically exfoliated graphene oxide in ambient conditions, and its electrochemical performance as an electrode for supercapacitor was examined. The effect of pH in the preparation of RFGO
Dong Ju Han et al.
Journal of nanoscience and nanotechnology, 13(12), 8154-8161 (2013-11-26)
Graphene nanomaterial has been reported as a chemical mechanism based surface-enhanced Raman scattering (SERS) substrate which has advantages of accuracy in the peak assignment with less peak shift and broader choice in the laser sources. Here we present a systematic
M A Pimenta et al.
Physical chemistry chemical physics : PCCP, 9(11), 1276-1291 (2007-03-10)
Raman spectroscopy has historically played an important role in the structural characterization of graphitic materials, in particular providing valuable information about defects, stacking of the graphene layers and the finite sizes of the crystallites parallel and perpendicular to the hexagonal
Wenshuo Wang et al.
Journal of nanoscience and nanotechnology, 14(5), 3412-3416 (2014-04-17)
Single sheets of functionalized graphene oxide are derived through chemical exfoliation of natural flake graphite. We present an effective synthetic method of graphene-gold nanoparticles hybrid nanocomposites. AFM (Atomic Force Microscope) was used to measure the thickness of the individual GO
Maryam Ghanbarian et al.
Journal of AOAC International, 96(4), 880-886 (2013-09-05)
A new displacement-dispersive liquid-liquid microextraction method based on the solidification of floating organic drop was developed for separation and preconcentration of Pd(ll) in road dust and aqueous samples. This method involves two steps of dispersive liquid-liquid microextraction based on solidification.
Tobias Lammel et al.
Aquatic toxicology (Amsterdam, Netherlands), 150, 55-65 (2014-03-20)
Graphene and graphene derivatives constitute a novel class of carbon-based nanomaterials being increasingly produced and used in technical and consumer applications. Release of graphene nanoplatelets during the life cycle of these applications may result in human and environmental exposure calling
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