Synthesis of potassium tungstate micro-walls by thermal evaporation

Growth and characterization of sodium–tungsten oxide nanobelts with U-shape cross section

“…Many tungsten oxide Q1D nanostructures preferably grow along /0 1 0S with the lattice parameter of $0.38 nm. This is governed by the specific structure of the crystals [12]. It is thus quite reasonable to suggest [0 0 1] is the major growth orientation of sodium-tungsten Q1D nanostructures, although attributing the (0 0 1) peak partially to the islands cannot be ruled out.…”

Synthesis of Crystallized BaWO<sub>4</sub> Nanorods in a Microemulsion System

“…In the present study, BaWO 4 tion of 4-dioxane played a crucial role in the formation of BaWO 4 nanorods with different morphologies. Thus, the addition of 1,4-dioxane should be controlled.…”

“…Nowadays, tungstate materials, BaSO 4 , have attracted much attention in view of its luminescent behavior and structural properties [1] [2]. As compared to other materials, the narrow line width of its stimulated Raman scattering (SRS)-active mode in BaSO 4 crystal (1.6 cm −1 ) leads to high peak intensity (63%).…”

Synthesis and characterization of nanocrystalline tungsten oxide nanosheets in large scale

“…[1][2][3][4] Various tungsten oxide nanostructures have been synthesized, such as nanowires, nanotubes, nanonetworks, and nanoribbons. [5][6][7][8][9][10][11][12][13][14][15] Among the synthesizing techniques, thermal evaporation has been the most common one because of its cheap apparatus, widely applicable materials, and convenient operations. A useful approach in the thermal evaporation technique is the use of potassium salts as a catalyst.…”

“…It was found that the existence of K element can dramatically lower the synthesizing temperature from 1200 to $2000 C to around 600 C. 11 Therefore, this approach has been used to synthesize various tungsten oxide nanostructures, such as nanoribbons and microwalls, except for nanosheets in large scale. [10][11][12][13][14][15] In this work, we report a modified simple method for synthesizing highly oriented nanosheets in large scale. This method involves heating tungsten (W) metal with potassium hydrate (KOH) in air via a two-stage heating process.…”