báo cáo hóa học: " Catalytic growth of ZnO nanostructures by r f magnetron sputtering" docx

... NANO EXPRESS Open Access Catalytic growth of ZnO nanostructures by r. f. magnetron sputtering María Arroyo-Hernández * , Raquel Álvaro, Sheila Serrano and José Luis Costa-Krämer Abstract The catalytic ... summary, experiments addressing a possible cata- lytic effect of gold on ZnO growth by r. f. magnetron sputtering under UHV conditions are presented. A moderate...

Ngày tải lên: 21/06/2014, 02:20

... been reported. The method offers a very simple and low cost route for the production of ZnO nanorods. ZnO nanorods have been Fig. 7 TEM of ZnO nanorods Fig. 6 EDXA of ZnO nanorods Fig. 8 ED of ZnO ... sci- entist project grant and a SERC visiting fellowship from DST, Government of India is gratefully acknowledged. The author is also thankful to Prof. CNR Rao of JNCASR, B...

Ngày tải lên: 22/06/2014, 06:20

... the lateral growth of ZnO is greatly limited while the growth along [0001] direction dominates the whole growth process considering the different growth rate of various growth facets which followed ... area electron diffraction (SAED) pattern of a single ZnO nanorod, which was washed off from the as-prepared product. It is clear that the ZnO nanorod is very straight with...

Ngày tải lên: 22/06/2014, 01:20

... NH 3 -TPD curves of catalysts. Figure 2. Total GC/MS peak areas for liquid products from catalytic pyrolysis of rice husk. Figure 3. Product distribution from catalytic pyrolysis of rice husk. ... been reported that the shape selectivity of the MFI structure of MFI catalysts increases the selectivity for aromatics [12]. Therefore, the high selectivity of Meso-MFI for...

Ngày tải lên: 20/06/2014, 23:20

... particles. X-ray diffraction [XRD] patterns of powders were measured using a Rigaku X-ray diffractometer (Rigaku Corporation, Tokyo, Japan). The microstructure of the powder was observed by field-emission ... This work was supported by the grant of the National Research Foundation of Korea funded by the Korean Government (MEST; NRF-2009-C1AAA001-0094219). 1 C...

Ngày tải lên: 20/06/2014, 23:20

... The insets of Figure 4b-d show the fast Fourier transform ( FFT) of the corresponding HRTEM images. The FFT diffractogram in the inset of Figure 4d shows that Si NRs is bi-crystalline, containing ... 112 > direction). This type of anisotropic surface energy can also induce preferred crystal growth at surfaces where the surface energy is high (i.e., the direct ion of two {100} f...

Ngày tải lên: 21/06/2014, 01:20

... products. The product distribu- tion after the catalytic reaction can be compared to revea l the catalytic effects of di fferent catalysts. Further- more, the chromatographic peak area of a compound ... of seaweeds as a potential source of biofuel, investigation on upgrading of seaweed-derived bio-oil would be very necessary. Even though researches of catalytic upgrading of...

Ngày tải lên: 21/06/2014, 01:20

... can guarantee suffi- cient stiffness for the fabrication of freestanding gratings during DRIE of silicon process, the fracture-related pro- blems are shown in Figure 3a are evident in the free- standing ... temperature of 280°C for 12 h. Then the template is transferred into the growth chamber and cleaned at the temperature of 800°C for 60 min. A 140-nm-thick buffer layer is deposit...

Ngày tải lên: 21/06/2014, 05:20

... [10,11]. Surfactants such a s urea were also added to obtain nanosized particles. X-ray d if- fraction [XRD] patterns of powders were measured using a Rigaku X-ray diffracto meter (Rigaku Corporation, Tokyo, ... Kim and Park: Catalytic properties of Co 3 O 4 nanoparticles for rechargeable Li/air batteries. Nanoscale Research Letters 2012 7:47. Submit your manuscript to a journal and be...

Ngày tải lên: 21/06/2014, 17:20

... nanowires have the same preferential growth orientation along the [110] direction of the rhombohedral Sb. The XRD pattern from the bottom surface (curve (2) in Fig. 1) of the nanowire array shows ... peaks of Sb (JCPDF no.85-1324). One can see from the top surface diffraction (curve (1) in Fig. 1) that there is a very sharp diffraction peak at 2h = 41.98 o , and other diffraction peak...

Ngày tải lên: 21/06/2014, 18:20