2015
DOI: 10.1007/s10854-015-3269-8
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Controllability of assemblage from WO3·H2O nanoplates to nanoflowers with the assistance of oxalic acid

Abstract: Self assembly of one-dimensional nanoscale particle into functional 2D or 3D complex structures has stimulated a great deal of interest. In current work, using the hydrothermal method and adjust the molar ratio of H 2 C 2 O 4 to Na 2 WO 4 Á2H 2 O, uniform WO 3 ÁH 2 O nanoplates and 3D hierarchical nanostructures were synthesized successfully. Furthermore, a novel growth mechanism is proposed in detail. In addition, the gas sensing of different morphologies were tested and comparised systematically. These inves… Show more

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Cited by 13 publications
(5 citation statements)
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“…S1), which testifies the important role of oxalic acid in formation of WO3•H2O nanosheets. By means of adding oxalic acid into the precursor solution, the growth direction of WO3•H2O crystals could be controlled due to the interlayer water in the WO3•H2O snatched by C2O4 2ions, resulting in limiting growth of certain crystal facets [25,26].…”
Section: Structure Composition and Morphology Of Wo3•h2o And Wo3 Namentioning
confidence: 99%
“…S1), which testifies the important role of oxalic acid in formation of WO3•H2O nanosheets. By means of adding oxalic acid into the precursor solution, the growth direction of WO3•H2O crystals could be controlled due to the interlayer water in the WO3•H2O snatched by C2O4 2ions, resulting in limiting growth of certain crystal facets [25,26].…”
Section: Structure Composition and Morphology Of Wo3•h2o And Wo3 Namentioning
confidence: 99%
“…In this way, 0D (dots), 1D (rods, whiskers, and fibres), 2D (plates, films), or 3D (large particles, blocks) WO 3 materials can be synthesized. Various types of nanostructured tungsten oxide have been reported, from simple, spherical nanoparticles [34] to WO 3 -based aerogel networks [35], quantum dots [36][37][38][39], nanostructured films [40] (including nanoplate films [41], nanorod films [42], honeycomb-structured films [43], and mesoporous films [44]), nanobelts [45], nanofibres [46], nanowires [30,46,47], bundle-like nanowires [30,48], nanonetworks [49], hollow spheres [50], macroporous spheres [51], wedge-like architectures [52], nanorods [53,54], nanocuboids [34], square nanoplates [55], nanosheets [56], nanoleaves [57], and urchin-like [30,58], flower-like [59][60][61], and tree-like nanostructures [62,63], etc.…”
Section: Introductionmentioning
confidence: 99%
“…Tungsten oxide materials encompass a range of stable suboxide stoichiometries such as WO 2 , WO 2.5 , W 18 O 49 , and W 20 O 58 , as well as the fully oxidized WO 3 [5][6][7][8]. Along with the variable stoichiometry, tungsten oxide has also been synthesized in numerous morphologies including thin films, nanorods, nanoplates and dendrimers [9][10][11][12][13]. Due to the available variations in its materials properties, tungsten oxide has found successful applications within organic electronics, photovoltaics, smart windows, catalysts, pseudocapacitors, and gas sensing devices [3,4,[14][15][16][17][18][19][20][21].…”
Section: Introductionmentioning
confidence: 99%