Visible-light-promoted gas-phase water splitting using porous WO3/BiVO4 photoanodes

Solid Polymer Electrolyte‐Coated Macroporous Titania Nanotube Photoelectrode for Gas‐Phase Water Splitting

“…Sintered Ti microfiber felt with a thickness of 0.1 mm was used as a porous conductive substrate with a high surface area . The three‐dimensional network structure of the prismatic fibers with a diameter of about 20 μm created macropores with an average pore size of several tens of micrometers .…”

“…Few studies reported a PEM‐PEC cell with an irradiated area larger than 1 cm 2 . Therefore, the H 2 production rate achieved by PEC gas‐phase water splitting was very low in previous reports . Herein, we tried to scale up the PEM‐PEC cell to the level of a few tens of milliampere.…”

Boosting the Performance of WO3/n‐Si Heterostructures for Photoelectrochemical Water Splitting: from the Role of Si to Interface Engineering

“…In the literature, photocurrent densities between 0.03 mA/cm 2 and 0.1 mA/cm 2 at 1.23 V vs RHE have been observed for sputtered WO3/FTO electrodes, with onset potentials of 0.7-0.75 V vs RHE [34,35] .…”

Boosting the performance of visible light‐driven WO 3 /g‐C 3 N 4 anchored with BiVO 4 nanoparticles for photocatalytic hydrogen evolution

“…BiVO 4 was found to be most active and stable materials to construct heterojunction photocatalysts with WO 3 and other materials because of its high utilization of visible light for photocatalysis, band gap energy ( E g = 2.4 eV) and its high optical absorption coefficient value . Further, it is a crystalline material with crystal structure like monoclinic scheelite, tetragonal zircon, and tetragonal scheelite having energy band gap of 2.4, 2.9, and 2.6 eV, correspondingly . In the case of WO 3 /BiVO 4 composite, the WO 3 can act like a conducting material (approximately 12 cm 2 V −1 s −1 ), and BiVO 4 serves as absorber of visible light (approximately 30% sunlight).…”

“…16 Further, it is a crystalline material with crystal structure like monoclinic scheelite, tetragonal zircon, and tetragonal scheelite having energy band gap of 2.4, 2.9, and 2.6 eV, correspondingly. 17 In the case of WO 3 /BiVO 4 composite, the WO 3 can act like a conducting material (approximately 12 cm 2 V −1 s −1 ), and BiVO 4 serves as absorber of visible light (approximately 30% sunlight). Additionally, this composite shows excellent photocatalytic efficiency because of improved charge separation efficiency due to the phenomenon of the transfer of the electrons in the CB of bismuth vanadate to CB of tungsten oxide while the holes in VB of tungsten oxide to VB of bismuth vanadate showing promising type-II band orientation in bismuth vanadate and tungsten oxide.…”