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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
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.
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) =
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
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
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
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
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
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
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)
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
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)
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
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
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
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
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
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
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)
Long Yang et al.
Analytica chimica acta, 852, 28-36 (2014-12-03)
A titanium dioxide-silicon carbide nanohybrid (TiO2-SiC) with enhanced electrochemical performance was successfully prepared through a facile generic in situ growth strategy. Monodispersed ultrafine palladium nanoparticles (Pd NPs) with a uniform size of ∼2.3 nm were successfully obtained on the TiO2-SiC
Tze-Bin Song et al.
ACS applied materials & interfaces, 7(44), 24601-24607 (2015-10-22)
Solution-processed silver nanowire networks are one of the promising candidates to replace a traditional indium tin oxide as next-generation transparent and flexible electrodes due to their ease of processing, moderate flexibility, high transparency, and low sheet resistance. To date, however
Fengxiang Chen et al.
ACS nano, 11(10), 10330-10336 (2017-09-22)
Carbon fiber is a good candidate in various applications, including in the military, structural, sports equipment, energy storage, and infrastructure. Coloring of carbon fiber has been a big challenge for decades due to their high degrees of crystallization and insufficient
Sreenivasan Koliyat Parayil et al.
Journal of nanoscience and nanotechnology, 15(9), 7285-7292 (2015-12-31)
TiO2-SiO2 mixed oxide photocatalyst materials responsive to simulated solar light illumination have been synthesized by sol-gel method in various polar and nonpolar organic solvent mixtures. The photocatalysts were characterized by numerous experimental techniques and investigated for the photocatalytic conversion of
Bridget K Mutuma et al.
Journal of colloid and interface science, 442, 1-7 (2014-12-17)
TiO2 photocatalysts with a mixture of different TiO2 crystal polymorphs have customarily been synthesized hydrothermally at high temperatures using complicated and expensive equipment. In this study TiO2 nanoparticles with a mixture of TiO2 crystals were synthesized using a modified sol-gel
Laxman Gouda et al.
The journal of physical chemistry letters, 6(22), 4640-4645 (2015-12-02)
The high open-circuit potential (Voc) achieved by perovskite solar cells (PSCs) is one of the keys to their success. The Voc analysis is essential to understand their working mechanisms. A large number of CH3NH3PbI3-xClx PSCs were fabricated on single large-area
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