hydrothermal synthesis of tungsten oxide nanobelts

... formation mechanism of tungsten oxide nanobelts is proposed. © 2006 Elsevier B.V. All rights reserved. Keywords: Hydrothermal; Tungsten oxide; Nanobelts 1. Introduction As a new family of one-dimensional ... Hydrothermal synthesis of tungsten oxide nanobelts Xuchun Song a, ⁎ , Yang Zhao b , Yifan Zheng c a Department of Chemistry, Fujian Normal University, ... pr...

Ngày tải lên: 20/03/2014, 13:04

... the synthesisof tungsten oxide nanorods assembled microspheres by a facile hydrothermal method. To our knowledge, there isno report on thegas sensing of the microsphere- like tungsten oxide nanostructures. ... [2,3]. Nanostructures of well-established gas sensing materials like tin oxide [4–6], zinc oxide [7], tungsten oxide [8–10], titanium oxide [11,12], and indium...

Ngày tải lên: 19/03/2014, 16:48

... www.elsevier.com/locate/mseb A rapid hydrothermal synthesis of rutile SnO 2 nanowires O. Lupan a,b,∗ , L. Chow a , G. Chai c , A. Schulte a ,S.Park a , H. Heinrich a,d a Department of Physics, University of Central Florida, ... December 2008 Keywords: Tin oxide Nanowires Nanoneedles Hydrothermal synthesis abstract Tin oxide (SnO 2 ) nanowires with rutile structure have been...

Ngày tải lên: 19/03/2014, 16:47

... 2006 Abstract Monodisperse particles of tungsten( VI) oxide monohydrate were prepared in a hydrothermal system at 40 °C, where 20 ml of HCl solution (1.50 mol/l) was added to the same volume of Na 2 WO 4 aqueous ... B.V. All rights reserved. Keywords: Tungsten( VI) oxide monohydrate; Tungstic acid; Monodisperse particle; Hydrothermal synthesis 1. Introduction Tungsten( VI)...

Ngày tải lên: 19/03/2014, 16:48

... Journal of Crystal Growth 275 (2005) e2371–e2376 Hydrothermal synthesis of Na 2 Ti 6 O 13 and TiO 2 whiskers Dong-Seok Seo a , Hwan Kim a , Jong-Kook Lee b,Ã a School of Materials Science ... purification, decomposition of NO x and improvement of living conditions by removal of various pollutants, etc. [19–21]. In this paper, we also demonstrated the preparation of TiO 2 whis...

Ngày tải lên: 20/03/2014, 13:04

... Hydrothermal synthesis of TiO 2 nanofibres Fei-Bao Zhang, Hu-Lin Li ⁎ College of Chemistry and Chemical Engineering, Lanzhou University, ... March 2006 Abstract TiO 2 nanofibres were synthesized by the hydrothermal method. The result shows that the growth of TiO 2 nanofibres is sensitive to the concentration of NaOH and the heating temperature. © ... ( MOCVD) using t ita- nium-t...

Ngày tải lên: 20/03/2014, 13:04

... this work, we found that tungsten oxide instead of tungsten sulfide was obtained when thiourea was used in the hydrothermal treatment of tungsten acid. The morphology of specific products gradually ... morphological feature of the products as observed by SEM. Thiourea is widely used as a source of sulfur in the hydrothermal synthesis of transition metal sulfides [13–...

Ngày tải lên: 20/03/2014, 13:04

... size- dependent properties of 1D nanostructured tungsten oxide itself as well as of inorganic derivatives prepared from the oxide. Recently, the hydrothermal synthesis of ultralong and single- crystalline ... past few years, much effort has been devoted to the synthesis of semiconductor nanowires, nanorods, and nanobelts, because of the importance of understanding th...

Ngày tải lên: 20/03/2014, 13:04

... work, we have reported the synthesis of spherical TiO 2 nanosheets (flower-like morphology composed of nano- sheets) via simple hydrothermal synthesis using titanium butoxide as starting material ... [1,19], due to the fact that the synthesis of these TiO 2 nanomaterials offer fundamental scientific opportunities for investigating the influence of size and dimensionality of mat...

Ngày tải lên: 20/03/2014, 13:04

... supersaturation oftungsten source, promoting the growth of tungsten oxide nanowires [23]. At higher concentration, the highly saturated WCl 6 could prohibit the growth of tungsten oxide nanowires ... images of tungsten oxide nanostructures synthesized at WCl 6 concentration of 0.01M, 0.015M and 0.02 M, respectively, after annealing at 300 ◦ C for 1h. (b) TEM image of the...

Ngày tải lên: 20/03/2014, 13:04