نتایج جستجو برای: bismuth vanadate bivo4
تعداد نتایج: 8930 فیلتر نتایج به سال:
Propylene oxide is a crucial feedstock in the plastic industry. The direct epoxidation of propylene using O2 considered among most promising means producing oxide. Here we report an integrated photo-electro-heterogeneous catalytic system for with O2. Bismuth vanadate (or TiO2) photocatalyst and Co-based electrocatalyst produces H2O2. A titanium silicalite-1 heterogeneous catalyst subsequently e...
Efficient photocatalytic water splitting requires effective generation, separation and transfer of photo-induced charge carriers that can hardly be achieved simultaneously in a single material. Here we show that the effectiveness of each process can be separately maximized in a nanostructured heterojunction with extremely thin absorber layer. We demonstrate this concept on WO3/BiVO4+CoPi core-s...
An efficient photoanode is a prerequisite for a viable solar fuels technology. The challenges to realizing an efficient photoanode include the integration of a semiconductor light absorber and a metal oxide electrocatalyst to optimize corrosion protection, light trapping, hole transport, and photocarrier recombination sites. To efficiently explore metal oxide coatings, we employ a high-throughp...
A cost-effective, simple method is developed for m-BiVO 4 hierarchical spheres, which show a higher specific capacitance of 1203 F g −1 at 2 , no detectable degradation after 2000 cycles, and beneficial cycling stability due to the unique porous architecture.
D rawing inspiration from nature, photoelectrochemical (PEC) water splitting based on Fujishima Honda effect has been demonstrated as a feasible and cost-effective realization of an artificial analogy to photosynthesis. 7 With the goal of solar energy harvesting and storage, semiconductor photoelectrodes hold great promise to be an attractive alternative to the naturally occurring photosystems....
Near-ultraviolet and visible excitable Eu- and Bi-doped NPs based on rare earth vanadates (REVO4, RE = Y, Gd) have been synthesized by a facile route from appropriate RE precursors, europium and bismuth nitrate, and sodium orthovanadate, by homogeneous precipitation in an ethylene glycol/water mixture at 120 °C. The NPs can be functionalized either by a one-pot synthesis with polyacrylic acid (...
Metal oxides that absorb visible light are attractive for use as photoanodes in photoelectrosynthetic cells. However, their performance is often limited by poor charge carrier transport. We show that this problem can be addressed by using separate materials for light absorption and carrier transport. Here, we report a Ta:TiO2|BiVO4 nanowire photoanode, in which BiVO4 acts as a visible light-abs...
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