Báo cáo hóa học: " Facile Hydrogen Evolution Reaction on WO3 Nanorods Janarthanan Rajeswari Æ Pilli Satyananda Kishore Æ Balasubramanian Viswanathan Æ Thirukkallam Kanthadai Varadarajan" pot

... HER due to the synergism towards reactions in acid involving hydrogen atoms [59]. All these results show the significance of WO 3 in hydrogen evolution reaction. In this article, we report a surfactant ... Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), High resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). The as-synthesized tungsten t...

Ngày tải lên: 22/06/2014, 18:20

... was deter- mined by one repetition maximum (1RM) in eccentric contraction on the isotonic (concentric/eccentric) leg extension machine. Subject was positioned on the leg extension device and the ... exercises. Eccentric muscle contractions. Progressive resistance exercise full range of motion, hop on one leg without pain. Isokinetic exercise and assessment. Phase 3. Duration 3–6 months...

Ngày tải lên: 20/06/2014, 01:20

... oxidation state of cobalt ions. Compared with the reference data, Co-SiO 2 has an edge position that is consistent with cobalt ions aligning with Co 3 O 4 that contains both oxi- dation states, ... the same reaction conditions. Zhang et al. Nanoscale Research Letters 2011, 6:586 http://www.nanoscalereslett.com/content/6/1/586 Page 5 of 7 NANO EXPRESS Open Access Facile preparation of high...

Ngày tải lên: 20/06/2014, 22:20

... of one major disadvantage: the difficulty of separation the reaction product from the catalyst and from any reaction solvent for a long and sustained environment prot ection [22]. In addition, there ... TiO 2 will be coated on the sur- face of amino-functionalized iron oxide NPs by hydroly- sis and poly-condensation as follows: (1) (2) We prepared the monodisperse spindle-like iron oxid...

Ngày tải lên: 20/06/2014, 22:20

... h oneycomb film could be controlled by polymer concentration and polymer micelle formation. In this respect, the height, width, and density of nano-needles on the nano-needle array would be controlled ... This mightresultfromtherestrictiononthegrowthofthe water droplets and the degree of water droplet sinking into the polymer solution as the polymer concentration increases. In addition, pol...

Ngày tải lên: 20/06/2014, 23:20

... large surface area, 267 m 2 g −1 , as confirmed by BET surface area measurements. In addition, the electron diffraction (selected area electron diffraction [SAED]) pattern of the selected area ... Abstract One of the most promising anode materials for Li-ion batteries, Li 4 Ti 5 O 12 , has attracted attention because it is a zero-strain Li insertion host having a stable insertion poten...

Ngày tải lên: 20/06/2014, 23:20

... electrodeposition, ITO surface was ultrasonicat ed sequentially for 20 min in acetone, 10% KOH ethanol solution, and doubly distilled water. The electrodeposi- tion process w as conducted in a solution consisting ... formation of Pd micro/nano-leaves. First, phosphate anions such as the hydrogen phosphate ion (HPO 4 2- ) or the dihydrogen phosphate ion (H 2 PO 4 - )in solution are preferent...

Ngày tải lên: 21/06/2014, 03:20

... mM) concentrations of AgNO 3 /BuNH 2 solutions (Figure 5A,C). In summary, for a given concentration of AgNO 3 /BuNH 2 concentra- tion with constant molar ratio of 2:1, there was an opti- mum reaction ... transparent througho ut the reaction. The UV- Vis spectra of the reaction solution were recorded at dif- ferent reaction t imes and did not indic ate a significant difference among the...

Ngày tải lên: 21/06/2014, 04:20

... was still degassed from the reaction vessel. Then, the solution was injected rapidly into the hot reaction solution at 270°C under N 2. After injection, the solution was cooled. The products ... display well-defined resonances with their expected integrations. Upon complexation to phosphorus, the proton resonances of the methyl, tert-butyl, or phenyl attached to silicon are shifted d...

Ngày tải lên: 21/06/2014, 17:20

... have been prepared on Pt substrates by a facile and mild solution method. The MnO 2 film prepared at RT with a long reaction time is composed of dandelion-like microspheres, which consists of nanowhiskers ... enhanced along with the high rate of adsorption of MnO 2 colloids to the Pt substrate. Under such circumstances, in addition to the one-dimentional growth of the nuclei along the lo...

Ngày tải lên: 21/06/2014, 20:20