n-Type bismuth vanadate has been identified as one of the most promising photoanodes for use in a water-splitting photoelectrochemical cell. The major limitation of BiVO4 is its relatively wide bandgap (∼2.5 eV), which fundamentally limits its solar-to-hydrogen conversion efficiency. Here we show that annealing nanoporous bismuth vanadate electrodes at 350 °C under nitrogen flow can result in n...

Bismuth vanadate (BiVO 4 )–paint composites coated on the aluminium sheet surface were fabricated with different BiVO amounts (0, 20, and 40 wt%) in paint.

Calcium vanadate (CaV2O6), a new product of vanadium precipitation, was obtained from slag by sodium roasting-water leaching and calcium precipitation. The separation behavior silicon in during roasting water systematically studied, micro-morphology valence migration Fe slag, residue were revealed. Na2CO3 added to the at 20% mass fraction, roasted 790 °C, kept for 120 min, sample deionized aque...

Good control of the solution pH and temperature is required to recover vanadium from water leaching ore after sodium roasting. However, such adjustments could lead aluminum-vanadium sodium-vanadium co-precipitation, which greatly affects efficiency recovery. In this study, a process that can increase recovery as ammonium metavanadate [NH4VO3] polyvanadate [(NH4)2V6O16·H2O] was investigated by e...

The aim of the study was to determine the effect of vanadate on glucose production in hepatocytes cultured in vitro. Hepatocytes were isolated by the collagenase perfusion technique and cultured for 24 h in M 199 serum-free medium. The glucose production was measured by incubating the cultures in glucose-free HanksHepes medium with the addition of 10 mmol/l pyruvate. The glucose released into t...

Molybdate, tungstate, fluoride, vanadate, and GTP-gamma-S [guanosine-5'-0-(3-thiotriphosphate)] were injected into Limulus ventral photoreceptors by ionophoresis from microelectrodes. All of these drugs induce discrete waves of depolarization similar in waveform to, but smaller in amplitude than, those normally elicited by dim light. As for light-evoked waves, the amplitude of drug-induced wave...

Treating carrot (Daucus carota L.) suspension culture cells with a mixture of cell wall degrading enzymes, Driselase, resulted in an increase in the percentage of [(3)H]phosphatidylinositol bisphosphate. Analysis of the lipid kinase activities in the isolated plasma membranes after whole cell treatment indicated that treatment with Driselase (2% weight/volume; the equivalent of 340 units per mi...

Human erythrocyte ghosts prepared by hemolysis and washing in hypotonic Tris are crenated by salt and divalent cations, but undergo shape change to smooth biconcave discs and stomatocytic forms when incubated with MgATP at 37 degrees C. This is normally accompanied by protein and lipid phosphorylations in which the major phosphate acceptors are the spectrin beta-chain and inositol phospholipids...

The role of auxin and protons in the gravitropic response of the sunflower (Helianthus annuus L. cv Sungold) hypocotyl has been investigated. No physiological asymmetry in acid-growth capacity could be detected between the upper and lower surfaces of gravistimulated hypocotyls. These data imply that neutral buffers inhibit shoot gravitropism by preventing the establishment of a lateral proton g...