controlled synthesis of α fe2o3 nanorods and its size dependent optical

... Journal of Colloid and Interface Science 312 (2007) 513–521 www.elsevier.com/locate/jcis Controlled synthesis of α- Fe 2 O 3 nanorods and its size- dependent optical absorption, electrochemical, and ... understanding of the shape and size- dependent properties of α- Fe 2 O 3 . In this paper, we propose an easy route for fabricating α- FeOOH nanorods via a...

Ngày tải lên: 05/05/2014, 15:26

... in the size of Figure 3. (a, b) TEM and HRTEM images of R-FeOOH nanorods. (c, d) TEM and HRTEM images of porous R-Fe 2 O 3 nanorods. (e) The corresponding ED pattern and (f) HRTEM image of a single ... were of reagent grade and used without further purification. In a typical synthesis procedure of the R-FeOOH nanorods, 2.78 g of FeSO 4 · 7H 2 O and 3.28 g of...

Ngày tải lên: 19/03/2014, 16:48

... hydrothermal conditions, 23 the synthesis of hollow hematite nanowires (with a pore size of 15 nm) by a vacuum-pyrolysis route from β-FeOOH, 24 and the hydrothermal synthesis of R-Fe 2 O 3 hollow spheres in the presence of ... Synthesis of Porous r-Fe 2 O 3 Nanorods and Deposition of Very Small Gold Particles in the Pores for Catalytic Oxidation of CO Ziyi Zhong,*...

Ngày tải lên: 20/03/2014, 13:08

... media and biomedical fields [6 － 9] , because of its good compatibility with organism and its electrical and magnetic characteristics of its size and morphology. Therefore, the preparation of ... that the nanorods were composed of Fe and O elements, and the ratio of the number of atoms Fe and O was about 3︰4. The TEM, SAED and EDS analyses reveale...

Ngày tải lên: 20/03/2014, 13:11

... properties of Fe 2 O 3 are determined predominantly by crystal structure, composition, particle size and morphology. Therefore, the synthesis of Fe 2 O 3 with well controlled composition, size and ... introduc- tion of SnCl 4 caused the formation of α- Fe 2 O 3 instead of FeOOH. We also tried to increase the addition of SnCl 4 concentration to 0⋅66 mmol, an...

Ngày tải lên: 19/03/2014, 16:48

... Solvent -controlled synthesis of TiO 2 1D nanostructures: Growth mechanism and characterization Kajari Das à , Subhendu K. Panda, Subhadra Chaudhuri Department of Materials Science and DST Unit of ... solvents and reaction time on the shape, size, and the optical properties of the nanostructures. 2. Experimental section All the reactants and the solvents were of anal...

Ngày tải lên: 20/03/2014, 13:08

... ultraviolet radiation and high levels of methane. ultraviolet radiation and high levels of methane. Evolution of the Earth Evolution of the Earth and its Atmosphere and its Atmosphere 600 ... consisting solely of trace amounts of hydrogen, helium, argon, neon and krypton. amounts of hydrogen, helium, argon, neon and krypton. The Earth and its...

Ngày tải lên: 04/04/2013, 10:51

... inflow of domestic wastewater, urban and agricultural runoffs (Fujino et al., 1997). Being a middle-sized city, Hadano City is comprised of various types of land cover. The core areas of the ... area based on the unit loads of pollution (Table 3) from paddy field and cultivated land for COD, TN and TP. For TDS, the area of paddy field and cultivated land were summed up...

Ngày tải lên: 05/09/2013, 10:17

... university Foreign languages department A comparison on cohesive devices between the gift of the magi and its two Vietnamese translation versions (So sánh các phép liên kết giữa bản gốc và hai bản ... He(( ' 5,$'#$8 !A happens, a relation of cohesion is set up, and the...

Ngày tải lên: 14/12/2013, 00:40

... localization of cystatin F, its restricted and readily regulated expres- sion [18], selective and not too potent inhibition of cathepsins are all in favor of the active role of cystatin F in processes of ... lowered affinity of cyst- atin F for these enzymes. Proline in the S 2 site is a fea- ture of human stefin A and cystatins F, S and SN, all of which are significant...

Ngày tải lên: 19/02/2014, 17:20