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Showing 1-30 of 70 results for "377996" within Papers
Kwan Wee Tan et al.
ACS nano, 8(5), 4730-4739 (2014-04-02)
Structure control in solution-processed hybrid perovskites is crucial to design and fabricate highly efficient solar cells. Here, we utilize in situ grazing incidence wide-angle X-ray scattering and scanning electron microscopy to investigate the structural evolution and film morphologies of methylammonium
Sibing Wang et al.
Chirality, 27(8), 543-550 (2015-05-23)
Single-handed twisted titania tubular nanoribbons were prepared through sol-gel transcription using a pair of enantiomers. Handedness was controlled by that of the template. The obtained samples were characterized using field-emission electron microscopy, transmission electron microscopy, diffuse reflectance circular dichroism (DRCD)
Catalytic asymmetric aryl transfer reactions to aldehydes with Grignard reagents as the aryl source.
Yusuke Muramatsu et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 14(34), 10560-10563 (2008-10-31)
Noushin Nasiri et al.
Nanoscale, 7(21), 9859-9867 (2015-05-13)
The self-assembly of nanomaterials into three-dimensional hierarchical structures is a fundamental step impacting a large number of synthetic and natural processes. These range from the scalable fabrication of nano-devices such as batteries, sensors and third generation solar cells to the
Tina Harifi et al.
Ultrasonics sonochemistry, 27, 543-551 (2015-04-23)
High intensity ultrasound was used for the synthesis and simultaneous deposition of TiO2:Fe3O4:Ag nanocomposites on polyester surface providing a feasible route for imparting magnetic and enhanced antibacterial and self-cleaning activities with controllable hydrophilicity/hydrophobicity at low temperature. Synergistic impact of sonochemistry
Afef Mehri et al.
Journal of colloid and interface science, 369(1), 309-316 (2011-12-28)
One-pot deposition of Pd onto TiO(2) has been achieved through directly contacting palladium(II) salt with nanosized functionalized TiO(2) support initially obtained by sol-gel process using titanium isopropoxide and citric acid. Citrate groups act as functional moieties able to directly reduce
Formation of TiO2 thin films by a modified sol-gel route and characterization of structural, optical and electrochromic properties
Fatma Pinar Gokdemir, et al.
Advanced Materials Letters, 5, 367-371 (2014)
Manas K Panda et al.
Dalton transactions (Cambridge, England : 2003), 39(9), 2428-2440 (2010-02-18)
Controlled oxidation of organic sulfides to sulfoxides under ambient conditions has been achieved by a series of titanium isopropoxide complexes that use environmentally benign H(2)O(2) as a primary oxidant. Specifically, the [N,N'-bis(2-oxo-3-R(1)-5-R(2)-phenylmethyl)-N,N'-bis(methylene-R(3))-ethylenediamine]Ti(O(i)Pr)(2) [R(1) = t-Bu, R(2) = Me, R(3) =
C Adán et al.
Journal of nanoscience and nanotechnology, 15(9), 6651-6662 (2015-12-31)
Titanium dioxide coatings were deposited on the surface of titanium foils by Thermal Plasma Spray (TPS) process. Three different TiO2 coatings were prepared using the commercial TiO2-P25 nanopowder and titanium isopropoxide precursor solution as feed-stocks. Structure and morphology of the
Asima Siddiqa et al.
Journal of environmental sciences (China), 37, 100-109 (2015-11-18)
Various compositions of cobalt and sulfur co-doped titania nano-photocatalyst are synthesized via sol-gel method. A number of techniques including X-ray diffraction (XRD), ultraviolet-visible (UV-Vis), Rutherford backscattering spectrometry (RBS), thermal gravimetric analysis (TGA), Raman, N2 sorption, electron microscopy are used to
Armin de Meijere et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 16(46), 13862-13875 (2010-10-15)
Thirty-three different N,N-dialkyl- and N-alkyl-N-phosphorylalkyl-substituted carboxamides 9-17 were treated with unsubstituted as well as with 2-alkyl-, 2,2-dialkyl-, and 3-alkenyl-substituted ethylmagnesium bromides 6 in the presence of stoichiometric amounts of titanium tetraisopropoxide or methyltitanium triisopropoxide to furnish substituted cyclopropylamines 20-25 in
António G B Castro et al.
Nanotechnology, 25(36), 365701-365701 (2014-08-21)
Metallic implants and devices are widely used in the orthopedic and orthodontic clinical areas. However, several problems regarding their adhesion with the living tissues and inflammatory responses due to the release of metallic ions to the medium have been reported.
Xingshu Li et al.
Chirality, 19(8), 638-641 (2007-06-08)
A series of sulfonamides (2-4) were prepared from natural amino acids and used as additives in the BINOL-Ti(OiPr)(4) catalyzed enantioselective alkynylation of aldehydes. The reactions proceeded smoothly with good yields and very high ee's (up to 99%) in most cases.
Farzad Foroutan et al.
Biomedical materials (Bristol, England), 10(4), 045025-045025 (2015-08-27)
In the present study, we report a new and facile sol-gel synthesis of phosphate-based glasses with the general formula of (P2O5)55-(CaO)25-(Na2O)(20-x)-(TiO2) x , where x = 0, 5, 10 or 15, for bone tissue engineering applications. The sol-gel synthesis method
Akshai Kumar et al.
Chemistry, an Asian journal, 5(8), 1830-1837 (2010-06-22)
The reactivity of Grignard reagents towards imines in the presence of catalytic and stoichiometric amounts of titanium alkoxides is reported. Alkylation, reduction, and coupling of imines take place. Whereas reductive coupling is the major reaction in stoichiometric reactions, alkylation is
Youngmi Koo et al.
Journal of colloid and interface science, 448, 148-155 (2015-03-01)
We report on the development of a new photoactive material via titania (TiO2) nanoparticle deposition on free-standing aligned carbon nanotube (CNT) sheets. Controlling homogeneous dispersion of negatively charged TiO2 nanoparticles, achieved by adjusting pH higher than the point of zero
Amir Lichtenstein et al.
Nature communications, 5, 4195-4195 (2014-06-25)
The capability to detect traces of explosives sensitively, selectively and rapidly could be of great benefit for applications relating to civilian national security and military needs. Here, we show that, when chemically modified in a multiplexed mode, nanoelectrical devices arrays
Arvind H Jadhav et al.
Journal of nanoscience and nanotechnology, 15(10), 7988-7996 (2016-01-05)
Electro-spun fabricated TiO2 nanofibers were prepared by simple electro-spinning method, in subsequent step silver (Ag) was deposited using precipitation method and obtained Ag-TiO2 composite nanofibers. The properties and morphology of these prepared composite nanofibers were characterized by XRD, SEM, EDX
Mehrzad Feilizadeh et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 72(3), 339-346 (2015-07-24)
To overcome the drawback of poor solar light utilization brought about by the narrow photoresponse range of TiO₂, a silver and sulfur co-doped TiO₂was synthesized. Using the prepared catalyst, solar photocatalytic degradation of 2-nitrophenol (2-NP) by a TiO₂-based catalyst was
Sung Hoon Ahn et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 15(9), 1841-1848 (2014-05-13)
A facile way of controlling the structure of TiO(2) by changing the amount of water to improve the efficiency of dye-sensitized solar cells (DSSCs) is reported. Hierarchically ordered TiO(2) films with high porosity and good interconnectivity are synthesized in a
Soo-Byung Ko et al.
Physical chemistry chemical physics : PCCP, 17(28), 18541-18546 (2015-06-26)
Adsorption of the colorless 1,3-bis(dicyanomethylidene)indane (BDMI) onto a nanocrystalline TiO2 surface unusually turned the BDMI a deep blue color. Upon contact of the BDMI-adsorbed TiO2 (BDMI-TiO2) with an iodide-based redox electrolyte, a photocurrent density as high as 14.9 mA cm(-2)
M Lorenzetti et al.
Biomedical materials (Bristol, England), 10(4), 045012-045012 (2015-08-01)
This study reports on the selective adsorption of whole plasma proteins on hydrothermally (HT) grown TiO2-anatase coatings and its dependence on the three main surface properties: surface charge, wettability and roughness. The influence of the photo-activation of TiO2 by UV
Tadashi Kokubo et al.
Journal of materials science. Materials in medicine, 19(2), 695-702 (2007-07-11)
A rectangular specimen of polyethylene terephthalate (PET) was soaked in a titania solution composed of titanium isopropoxide, water, ethanol and nitric acid at 25 degrees C for 1 h. An amorphous titanium oxide was formed uniformly on the surface of
Yu-Chieh Tu et al.
Journal of colloid and interface science, 448, 315-319 (2015-03-10)
Here we demonstrated an approach to increase performance of P3HT:TiO2 solar cell either by electron deficient boron or electron rich bismuth doping into TiO2 nanorods. The B doping increases the absorption, crystallinity and electron mobility of TiO2 nanorods. The Bi-doped
Shuqin Liu et al.
Analytica chimica acta, 878, 109-117 (2015-05-24)
Mesoporous TiO2 nanoparticles were synthesized with the hydrothermal method and characterized by powder X-ray diffraction (PXRD) and transmission electron microscope (TEM). Then a superior solid-phase microextraction (SPME) fiber was fabricated by sequentially coating the stainless steel fiber with silicone sealant
Zarrin Es'haghi et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 980, 55-64 (2015-01-16)
A new design of hollow fiber solid-liquid phase microextraction (HF-SLPME) was developed for the determination of benzodiazepines (BZPs) in hair, urine and wastewater. The membrane extraction with 1-pentyl-3-methylimidazolium bromide coated titanium dioxide ([PMIM]Br@TiO2) sorbent used in this research is a
Choumini Balasanthiran et al.
Journal of colloid and interface science, 459, 63-69 (2015-08-12)
The surface of oleic acid stabilized rod-shape anatase TiO2 nanocrystals was modified by adsorption of Eu(3+) ions. The Eu(3+) attachment showed Langmuir adsorption behavior, thus the loading of Eu(3+) could be controlled precisely up to surface saturation coverage. The Eu(3+)-TiO2
Alfred J Wooten et al.
Organic letters, 9(3), 381-384 (2007-01-26)
[reaction: see text] We report the catalytic asymmetric allylation of ketones under highly concentrated reaction conditions with a catalyst generated from titanium tetraisopropoxide and BINOL (1:2 ratio) in the presence of isopropanol. This catalyst promotes the addition of tetraallylstannane to
R Said et al.
Journal of nanoscience and nanotechnology, 10(4), 2552-2557 (2010-04-02)
RF-PECVD was used to prepare amorphous of carbon (DLC) onto stainless steel 316 and glass substrates. The substrates were negatively biased at between 100 V to 400 V. Thin films of DLC have been deposited using C2H2 and titanium isopropoxide
E Silva Junior et al.
Dalton transactions (Cambridge, England : 2003), 44(7), 3159-3175 (2015-01-13)
The focus of this paper is on the analysis of the structural and electronic order-disorder effects at long, medium and short ranges of titanium dioxide (TiO2) nanoparticles synthesized by the sol-gel process followed by the microwave-assisted solvothermal (MAS) method at
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