hydrothermal growth and characterizations of dandelion-like zno

... emission of the ZnO originates from the Fig. 4. TEM of (a) dandelion-like ZnO nanostructure and (b) an individual ZnO nanorod. Fig. 5. (a) SAED pattern of ZnO nanorod and (b) HRTEM image of a ZnO ... Hydrothermal growth and characterizations of dandelion-like ZnO nanostructures Rohidas B. Kale a, ⇑ , Shih-Yuan Lu b, ⇑ a Department of Physics, The Instit...

Ngày tải lên: 06/05/2014, 13:24

... all the Inca and Maya gold and silver and ruled much of Mexico, Central and Latin America. Britain, France, Germany, Holland, Italy and Portugal colonized most of Asia and Africa and took complete ... sugar cane and banana plantations of the West Indies (Caribbean Islands), rubber plantations of Malaya, and coffee and coco plantations in Africa and South Amer...

Ngày tải lên: 21/02/2014, 14:20

... nano- wires, and some of them self-assemble together and appear in the form of short chain. Further magnified TEM images and SAED on individual nanowires provide further insi ght into the struc- ture of ... peripheries of the nanowire, which leads to the coaxial core-shell structure. TEM observation of several tens of such nanowires reveal that the diameter of the core and...

Ngày tải lên: 16/03/2014, 15:08

... Journal of Alloys and Compounds 433 (2007) 216–220 Hydrothermal synthesis and characterization of ␣-FeOOH and ␣-Fe 2 O 3 uniform nanocrystallines Xiaohe ... Journal of Alloys and Compounds 433 (2007) 216–220 Fig. 3. (A) TEM image of the sample produced at 140 ◦ C for 4 h. (B) TEM image of the sample produced at 140 ◦ C for 8 h. The insets of (A and B) ... attention bec...

Ngày tải lên: 19/03/2014, 16:48

... two growth stages: the growth of aggregate particles is facilitated and followed by the growth of 1D nanorods to form the urchin-like structure. TEM andHR-TEMmicrographs of h-WO 3 nanostructures ... chemical vapor deposition, solvo- and hydrothermal reaction, solution-based colloidal approach, and sonochemistry processes. Among them, solvo- and hydrothermal processes o...

Ngày tải lên: 19/03/2014, 16:48

... was the direct hydrothermal treatment of an homogeneous mixtures of ferric nitrate (1 M) and urea (1.5 M) solutions at 200  C for 4 h. At about 70  C urea decomposes into ammonia and carbon dioxide, acting ... characteristics of hydrothermally prepared a-iron oxides Oxide type Precursor Conditions of hydrothermal treatment Particle shape Average diameter (mm) Speci®c surface...

Ngày tải lên: 19/03/2014, 16:48

... FE-SEM images of TNAs grown on PT-substrate at an annealing temperature of 700 8C and at a hydrothermal growth temperature of 160 8C and growth time of 3 h. (a) PT-substrate; (b) top view of TNAs; ... view of TNAs. Fig. 6. Diameter distribution of TiO 2 nanorods grown on PT-substrate at an annealing temperature of 700 8C and at a hydrothermal growth temperature...

Ngày tải lên: 19/03/2014, 16:48

... range (465 and 520 nm band) and attributed them to the oxygen vacancies. Jin et al. [19] observed two peaks at 488 and 510 nm from anatase TiO 2 film with the addition of ZnFe 2 O 4 and ascribed ... of the nanowires aggregated into bundles in the solution Fig. 1. XRD pattern of the as-prepared nanowires (A and B represent anatase and brookite, respectively). Fig. 2. A typical...

Ngày tải lên: 19/03/2014, 16:48

... was produced and sequenced (Accession No. AJ888885). Comparison of genomic and cDNA revealed two introns with a size of 58 and 64 bp. Removal of the introns led to an open reading frame of 465 amino acids ... by use of different CoASH concentrations in the range of 0.19 and 0.019 mm. The K i for propionyl-CoA was determined in the presence of 0.15 mm propionyl-CoA and...

Ngày tải lên: 23/03/2014, 15:20