Rahman, Gul Joo, Oh-Shim Chae, Sang Youn Shah, Anwar-Ul-Haq Ali Mian, Shabeer Ahmad 2024-01-19T23:02:17Z 2024-01-19T23:02:17Z 2022-01-25 2018-04 0361-5235 https://pubs.kist.re.kr/handle/201004/121506 This study reports the one-step in situ synthesis of a hematite-tungsten oxide (alpha-Fe2O3-WO3) composite on fluorine-doped tin oxide substrate via a simple hydrothermal method. Scanning electron microscopy images indicated that the addition of tungsten (W) precursor into the reaction mixture altered the surface morphology from nanorods to nanospindles. Energy-dispersive x-ray spectroscopy analysis confirmed the presence of W content in the composite. From the ultraviolet-visible spectrum of alpha-Fe2O3-WO3, it was observed that absorption began at similar to 600 nm which corresponded to the bandgap energy of similar to 2.01 eV. The alpha-Fe2O3-WO3 electrode demonstrated superior performance, with water oxidation photocurrent density of 0.80 mA/cm(2) (at 1.6 V vs. reversible hydrogen electrode under standard illumination conditions; AM 1.5G, 100 mW/cm(2)) which is 2.4 times higher than alpha-Fe2O3 (0.34 mA/cm(2)). This enhanced water oxidation performance can be attributed to the better charge separation properties in addition to the large interfacial area of small-sized particles present in the alpha-Fe2O3-WO3 nanocomposite film. English SPRINGER Enhanced Water Oxidation Photoactivity of Nano-Architectured alpha-Fe2O3-WO3 Composite Synthesized by Single-Step Hydrothermal Method Article 10.1007/s11664-017-6059-7 1 JOURNAL OF ELECTRONIC MATERIALS, v.47, no.4, pp.2359 - 2365 JOURNAL OF ELECTRONIC MATERIALS 47 4 2359 2365 N scie scopus 000426586000022 2-s2.0-85040617257 Engineering, Electrical & Electronic Materials Science, Multidisciplinary Physics, Applied Engineering Materials Science Physics Article NANOSTRUCTURED HEMATITE PHOTOANODES THIN-FILMS PHOTOOXIDATION PERFORMANCE SCAFFOLD Water oxidation alpha-Fe2O3-WO3 composite photoactivity hydrothermal method