Room temperature synthesis of K₂Mo₃O₁₀·3H₂O nanowires in minutes

Abstract

Polyoxometalates have been widely used in the fields of catalysis, analytical chemistry, biochemistry, medicine and synthesis of novel organic-inorganic materials. It is difficult to synthesize pure polymolybdate products from a solution because several kinds of molybdenum-based anions may coexist. As a result, varied acidification methods are commonly used for solution synthesis of polymolybdates. In this paper we report an approach for the synthesis of [001]-oriented K(2)Mo(3)O(10)x3H(2)O nanowires from an aqueous solution of (NH(4))(6)Mo(7)O(24)x4H(2)O and KCl at low temperatures. The reaction occurs even at temperatures as low as 0 degrees C, and at 30-90 degrees C the whole procedure needs only a few minutes. Without any additional acidification treatments, the pH value of the solution is maintained in a narrow range of +/- 0.1 between 4.9 and 5.5 during the whole synthesis procedure. The starting pH depends on the reaction temperature. Crystalline structure and purity of the final products have been characterized with x-ray diffraction, electron diffraction and dehydration measurements. This simple and rapid method provides a unique case for studying the growth mechanism of polymolybdate nanostructures, and has a promising potential in the mass production of low-cost, pure-phase polymolybdates for a variety of applications.

Dissolvable Trimolybdate Nanowires as Ag Carriers for High-Efficiency Antimicrobial Applications

“…• C in the whole reaction process. This was attributed to the existence of NH 4 + ions in the solution [38,39]. Synthesized under this condition, the end products were uniform and long nanowires, as shown in Figure 1(e).…”

Temperature-dependent Raman spectroscopic studies of microstructure present in dipotassium molybdate crystals and their melts

“…So far, dipotassium molybdates have been extensively used in the synthesis of solid‐state laser materials, e.g. K 2 Mo 3 O 10 , and have been used as catalysts in the growth of high‐quality single crystals, such as Yb x Y 1− x Al 3 (BO 3 ) 4 …”

Impact of biogenic nanoscale metals Fe, Cu, Zn and Se on reproductive LV chickens

“…So, these particles are easily absorbed by an animal's digestive system. Many studies [6][7][8][9] have indicated that nanocrystalline metals assist fast growth and enhance production of animals. The synthesized nanoscale metals will presumably replace inorganic minerals (sulphates and oxides) in animal diet, although under the form of sulfate salts or chelates inorganic minerals have been applied widely [10,11].…”

“…In Vietnam, most minerals supplemented into animal feed are in the form of inorganic salts that lead to low feeding efficiency, causing waste and environmental pollution. Recently, there have been some studies [7,9,11,12] which prefer the application of nanoscale metals instead of inorganic minerals for animal feed. Presumably, introducing nanoscale metal preparations into poultry farming is essential in improving the meat and egg productivity.…”