A facile method is developed for the large-scale growth of hierarchical transition-metal (Cu, Fe, and Ni) vanadate nanosheets on corresponding metal mesh as supports. The hierarchical transition-metal vanadate nanosheets were in situ grown on the metal meshes through an orientational etching process and simultaneous nucleation and growth process. Interestingly, the morphologies of the vanadate ...

this research reports a facile ultrasonic approach for the synthesis of iron vanadate (fevo4) nanoparticles with the aid of ammonium metavanadate (nh4vo3) and fe(no3)3.9h2o as the starting reagents without adding external surfactant, capping agent or template in an aqueous solution. furthermore, to examine the solar cell application of as-synthesized iron vanadate (fevo4) nanoparticles, fto/tio...

Microsomal vesicles of oat roots (Avena sativa var Lang) were separated with a linear dextran (0.5-10%, w/w) or sucrose (25-45%, w/w) gradient to determine the types and membrane identity of proton-pumping ATPases associated with plant membranes. ATPase activity stimulated by the H(+)/K(+) exchange ionophore nigericin exhibited two peaks of activity on a linear dextran gradient. ATPase activiti...

Vanadate mimics the metabolic actions of insulin. In diabetic rodents, vanadate also sensitizes peripheral tissues to insulin. We have analyzed whether this latter effect is brought about by a mechanism other than the known insulinomimetic actions of vanadium in vitro. We report that the levels of glucose 6-phosphate (G-6-P) in adipose, liver, and muscle of streptozotocin-treated (STZ)-hypergly...

Photoelectrodes based on bismuth vanadate demonstrate excellent performance in photoelectrochemical glycerol reforming.

Using ratiometric Ca2+ imaging and patch-clamp measurement of Ca2+ channel activity, we investigated Ca2+ signaling induced by vanadium compounds in Jurkat T lymphocytes and rat basophilic leukemia cells. In the presence of external Ca2+, vanadium compounds produced sustained or oscillatory Ca2+ elevations; in nominally Ca2+-free medium, a transient Ca2+ rise was generated. Vanadate-induced Ca2...

When amphipathic cationic drugs are added to intact human RBCs, the RBCs first undergo a stomatocytic shape change and then, if relatively large amounts of drug are added and if the metabolic state of the RBC is appropriate, endocytic vacuoles form. Vanadate has a structural similarity to the transition state of phosphate, which presumably accounts for its ability to inhibit phosphohydrolases, ...

We have compared the tyrosine kinase activity of pp60c-src isolated from intact chicken embryo fibroblasts treated with micromolar sodium orthovanadate for 4 h and from untreated cells. We found an approximate 50% reduction in both autophosphorylation of pp60c-src and phosphorylation of casein when examined in the immune complex kinase assay. The reduction of in vitro enzymatic activity correla...