Yonsei University · Energy
Professor Shipeng Wan's research lab specializes in the design and development of advanced semiconductor materials for sustainable energy and environmental applications. The lab focuses on photocatalysis and photoelectrochemistry, with main research directions including the rational engineering of bismuth-based semiconductors (e.g., BiVO₄), carbon nitride nanomaterials, and Z-scheme heterojunctions for efficient solar-driven water splitting, CO₂ reduction, and air/water purification. Innovative strategies such as surface oxygen vacancy engineering, elemental doping (e.g., N, O, C), and supramolecular synthesis are employed to enhance charge separation, light absorption, and surface reactivity.
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Photoelectrochemical water splitting into H2 and H2O2 has received increasing attention but suffers from uncontrollable selectivity for water oxidative H2O2 production and low solar conversion efficiency. Herein, we present a N2-treated surface oxygen-vacancy-enriched BiVO4 photoanode (N–Ovac–BVO), which tunes the surface wettability of BVO toward a kinetics-controlled H2O2 production process as well as offers higher charge separation efficiency. As a result, the average Faradaic efficiency (FE)
Abstract Novel carbon nitride (CN) nanosheets are for the first time fabricated by facial supramolecular approach using cyanuric acid, melamine, and 2,4‐diamino‐6‐methyl‐1,3,5‐triazine as starting materials. This is also the first report where the third monomer is used in such synthetic route. With the unique structural advantages for efficient separation of photoinduced charge–hole pairs, light absorption, and the richly available restive sites, the as‐synthesized porous CN nanosheets exhibit a
A Z-scheme CaIn<sub>2</sub>S<sub>4</sub>/Ag<sub>3</sub>PO<sub>4</sub> photocatalyst with superior photocatalytic NO removal performance was fabricated and characterized, and mechanistic analysis was also carried out.
A large size BiVO 4 photoanode with high stability for efficient photoelectrochemical water oxidation and TCH degradation coupled with H 2 evolution.
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