hydrothermal synthesis and characterization of self - assembled h - wo3

... intense and sharp diffraction peaks (Fig. 1a) are observed, indicative of high-degree crystallinity. On the other hand, the as-synthesized h- WO 3 with the NH 4 + -based EDTA sam- ple showed broader ... bundles and urchin-like structure crystalline h- WO 3 samples were synthesized through hydrothermal reaction of Na 2 WO 4 · 2H 2 O, HCl and Na + -orNH 4 + -based EDTA salt solu...

Ngày tải lên: 19/03/2014, 16:48

... peaks of ␣-FeOOH become slightly weak, along with the weakening of ␣-Fe 2 O 3 peaks, which indicates the transition from ␣-FeOOH to ␣-Fe 2 O 3 . Fig. 2 shows the X-ray diffraction pattern of the ... Journal of Alloys and Compounds 433 (2007) 216–220 Hydrothermal synthesis and characterization of ␣-FeOOH and ␣-Fe 2 O 3 uniform nanocrystallines Xiaohe Liu a,b , Guanzhou Qi...

Ngày tải lên: 19/03/2014, 16:48

... with de®nite composition. A number of papers dealing with the hematite formation under hydrothermal conditions have been published [1±6]. It is the aim of this paper to report on the synthesis of hematite ... 689±692 hydrothermal treatment was carried out at 120  C for 3.5 h, with stirring. . D. Hematite powder was obtained also by the hydrothermal processing of a water±goet...

Ngày tải lên: 19/03/2014, 16:48

... inherent growth habit and hydrothermal preparation conditions. The structure of rutile consists of chains of TiO 6 octahedra along the c-axis [23]. The TiO 6 octahedra in the chain connect through ... chain connect through one shared edge, while the TiO 6 octahedra between two chains connect through points, which implies that the chemical band in the chain is stronger than that betw...

Ngày tải lên: 19/03/2014, 16:48

... at temperatures of ‡ 45 °C. The precursor peptide H- Bip–l-3,4-dehydro-Pro-OH (H- Bip–DPro-OH) for 3 H- labeling was synthesized as follows. Boc–Bip-OH was converted to Boc–Bip– N-hy- droxysuccinimide ... out with 4 m HCl ⁄ dioxane to give H- Bip–DPro-OH as its hydrochloride. Precipitation from isopropanol ⁄ ethyl ether gave the H- Bip–DPro–OHÆHCl in high purity (‡ 98%, checked by TLC,...

Ngày tải lên: 07/03/2014, 05:20

... Kim Do. Hydrothermal synthesis and characterization of self- assembled h- WO 3 nanowires/nanorods using EDTA salts. J Alloys Compd 2009;475:446–51. [20] Albiter MA, Huirache-Acuña R, Paraguay-Delgado ... Synthesis and characterization of WO 3 nanostructures prepared by an aged -hydrothermal method R. Huirache-Acuña a,b, ⁎ , F. Paraguay-Delgado c,1 ,M.A.Albiter d ,J.Lara...

Ngày tải lên: 20/03/2014, 13:08

... 14%). 1 HNMRd 7.6–7.9 (m (1 6H, P + –ArH and H- 11),7.46( 1H, s ,H- 6), 6.49 ( 1H, s, H- 9),4.1–4.2( 2H, m,Ar-O-CH 2 ), 3.71 ( 3H, s, O-CH 3 ), 3.4– 4.0( 5H, m,P + –CH 2 , H- 11a and H- 3), 1.75–2.4 ( 8H, m, O-CH 2 -CH 2 ,P + –CH 2 -CH 2 , ... targeting of a DNA-alkylating reagent to mitochondria Synthesis and characterization of [ 4-( (11aS )-7 -methoxy-1,2,3,11a-tetrah...

Ngày tải lên: 20/02/2014, 11:20

... [20]. The difference of the reflectance might be the effect of synthesis conditions, such as thickness of metal film and SiH 4 gas flow. The reduction of reflectance is very helpful to improve the solar ... were obtained to 2.3 mA/cm 2 and 520 mV, respectively. These values were higher than that of the hetero-junction SiNWs synthesized on metal foil [4] and that of the homo-ju...

Ngày tải lên: 16/03/2014, 15:12

... determination of unit cell and space group. Incoherent imaging techniques such as STEM with the High- Angle-Annular-Dark-Field detector (STEM-HAADF) were used for the investigation of the shape of the nanowires ... electrical characterization, (c) ED pattern of nanowire, (d) STEM-HAADF image of a nanowire, and (e) linescan of the HAADF signal (solid line) and numerical fit...

Ngày tải lên: 16/03/2014, 15:25

... procedures Materials N-a-Fmoc- L -amino acids, 4-hydroxymethylphenyloxy (HMP) resin, and reagents used for solid-phase chemical synthesis of Pi4 were purchased from Perkin-Elmer. Organic solvents ... Ca(NO 3 ) 2 ,0.41CaCl 2 , 2.4 NaHCO 3 , 15 N-2-hydroxy- ethylpiperazine-N¢-ethanesulphonic acid (Hepes), pH 7.4 with NaOH]. The plasmids were cleaved with SmaI (Shaker B), Not1(ratKv1.1),Xb...

Ngày tải lên: 17/03/2014, 10:20