hydrothermal synthesis and humidity sensing property of zno nanostructures

... 404. E. Pál et al. /Journal of Colloid and Interface Science 378 (2012) 100–109 109 Hydrothermal synthesis and humidity sensing property of ZnO nanostructures and ZnOAIn(OH) 3 nanocomposites Edit ... smaller than that of the members of prism-like series due to their more intensive visible emission. 3.3. Humidity sensing property of nanocomposites The humid...

Ngày tải lên: 06/05/2014, 13:24

... spheres by one-pot hydrothermal reaction of a solution con- taining metal ions and glucose and subsequent decomposition of core carbon. In addition, the hollow structures of SnO 2 and ZnO [14,15] have ... fur- Fig. 7. Dynamic sensing transients of (a) R30-RH and (b) R30 sensors and (c) gas responses (R g /R a ) of R30-RH and R30 sensors to 0.5–2.5 ppm NO 2 . C Y. L...

Ngày tải lên: 19/03/2014, 16:48

... absorp- tion band gap energy. Two regions with a linear relationship are observed in the ranges of 3.5–4.2eV and 5.0–6.0 eV, respectively, giving two E g values of 2.77 eV and 2.26eV. The band gap of 2.77 ... conduction band). However, the band gap of 2.77 eV is much lower than the reported directband gapsof WO 3 . Theband edgeposition for amor- phous WO 3 in contact with an aqueo...

Ngày tải lên: 20/03/2014, 13:04

... ethanol and (f) hydrogen of different concentrations at 350 ◦ C and relative humidity of 5–18%. Table 1 The linear equations and correlation factor for the chart of the logarithm of response of the ... the adsorption and des- orption of gas molecules on the surface of the sensing structure. To understand the origin of the difference in the sensing perfor- mance...

Ngày tải lên: 05/05/2014, 15:26

... 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) ... recent year...

Ngày tải lên: 19/03/2014, 16:48

... of Alloys and Compounds 475 (2009) 446–451 Contents lists available at ScienceDirect Journal of Alloys and Compounds journal homepage: www.elsevier.com/locate/jallcom Hydrothermal synthesis and ... directed synthesis, chemical vapor deposition, solvo- and hydrothermal reaction, solution-based colloidal approach, and sonochemistry processes. Among them, solvo- and hydro...

Ngày tải lên: 19/03/2014, 16:48

... Hydrothermal synthesis and characterization of some polycrystalline a-iron oxides Lucian Diamandescu*, Doina Mihaila-Tarabasanu, Nicoleta Popescu-Pogrion, Alina ... particle morphology were obtained by hydrothermal synthesis, in the temperature range of 160± 300  C. Goethite and ferric hydroxide precursors prepared by precipitation and oxidation under dierent ... porosity,...

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 of...

Ngày tải lên: 19/03/2014, 16:48

... 379–382 www.elsevier.nlrlocaterinoche Hydrothermal synthesis and crystal structure of a novel one-dimensional ž/wx tritungstate: C H N W O 2102 310 Bangbo Yan, Yan Xu ) , Ngoh K. Goh, Lian S. Chia DiÕision of Chemistry, School of ... enH 2q cations occupy interstrand regions 2 of the W O 4y chains and exhibit strong hydrogen bond 620 network to terminal and bridging oxo grou...

Ngày tải lên: 19/03/2014, 16:48

... Hydrothermal synthesis and photoluminescence of TiO 2 nanowires Y.X. Zhang, G.H. Li * , Y.X. Jin, Y. Zhang, J. Zhang, L.D. Zhang Institute of Solid State Physics, Chinese Academy of Sciences, ... 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...

Ngày tải lên: 19/03/2014, 16:48