Photoelectrochemical H evolution on WO/BiVO enabled by single-crystalline TiO overlayer modulations.

Tungsten oxide/bismuth vanadate (WO/BiVO) has emerged as a promising photoanode material for photoelectrochemical (PEC) water splitting owing to its facilitated charge separation state differing significantly from single phase materials. Practical implementation of WO/BiVO is often limited by poor stability arising from the leaching of V from BiVO during PEC operations. Herein, we demonstrate that the synthesis of a tungsten oxide/bismuth vanadate/titanium oxide (WO/BiVO/TiO) heterostructure onto a fluorine-doped tin oxide-coated glass substrate through a combined simple hydrothermal-spin coating strategy will advance PEC performance while slowing water oxidation kinetics and improving photostability.

Energy and environmental applications of Sn/Ti doped α-FeO@CuO/CuO photoanode under optimized photoelectrochemical conditions.

The most promising technique for directly converting solar energy into clean fuels and environmental remediation by organic dye degradation is photoelectrochemical (PEC) process. We introduced Sn/Ti doped α-FeO@CuO heterojunction photoanode with complete optimization for PEC hydrogen (H) generation and organic dye degradation. Improvement of photocurrent photo and reducing overpotentials under optimized conditions lead to enhancing PEC performances, degradation efficiency of organic compounds, and H generation generation rate.

Interfacial growth of the optimal BiVO nanoparticles onto self-assembled WO nanoplates for efficient photoelectrochemical water splitting.

Photoelectrochemical water splitting is the most efficient green engineering approach to convert the sun light into hydrogen energy. The formation of high surface area core-shell heterojunction with enhanced light-harvesting efficiency, elevated charge separation, and transport are key parameters in achieving the ideal water splitting performance of the photoanode. Herein, we demonstrate a first green engineering interfacial growth of the BiVO nanoparticles onto self-assembled WO nanoplates forming WO/BiVO core-shell heterojunction for efficient PEC water splitting performance.