Chae, Sang Youn Lee, Eun Seon Jung, Hyejin Hwang, Yun Jeong Joo, Oh-Shim 2024-01-20T09:33:42Z 2024-01-20T09:33:42Z 2021-09-05 2014-06 2046-2069 https://pubs.kist.re.kr/handle/201004/126725 To enable water splitting in photoelectrochemical cells, the conduction-band (CB) and valence-band edges must straddle the hydrogenreduction and water-oxidation potentials; however, the CB edge potential of many photoanodic semiconductors is insufficient. Here, we demonstrate the nanostructured Bi2WO6 for photoanodic application, which has a high, flat-band potential of 0.15 V vs. RHE. Single-phase, orthorhombic Bi2WO6 nano-structures were successfully grown on an FTO substrate through a two-step hydrothermal synthesis with subsequent thermal treatment at 600 degrees C. The synthesized Bi2WO6 photoanode shows a lower onset potential and improved photocurrents which were enhanced further by a factor of three by coating the surface with Co-Pi. The low onset potential of the Bi2WO6/Co-Pi photoanode results in a higher operating photocurrent in a p/n photodiode cell combined with a p-Si/n-Si/Pt photocathode. English ROYAL SOC CHEMISTRY PHOTOELECTROCHEMICAL HYDROGEN-PRODUCTION OXIDATION FILMS CELLS WO3 PHOTOCATALYSTS EVOLUTION NANORODS PROGRESS SYSTEM Synthesis of Bi2WO6 photoanode on transparent conducting oxide substrate with low onset potential for solar water splitting Article 10.1039/c4ra02868f 1 RSC ADVANCES, v.4, no.46, pp.24032 - 24037 RSC ADVANCES 4 46 24032 24037 scie scopus 000338042500014 2-s2.0-84902329665 Chemistry, Multidisciplinary Chemistry Article PHOTOELECTROCHEMICAL HYDROGEN-PRODUCTION OXIDATION FILMS CELLS WO3 PHOTOCATALYSTS EVOLUTION NANORODS PROGRESS SYSTEM water splitting photoanode Bi2WO6 onset potential p/n photodiode