Najafpour, Mohammad Mahdi Salimi, Saeideh Zand, Zahra Holynska, Malgorzata Tomo, Tatsuya Singh, Jitendra Pal Chae, Keun Hwa Allakhverdiev, Suleyman I. 2024-01-20T00:03:04Z 2024-01-20T00:03:04Z 2021-09-03 2017-11-21 1144-0546 https://pubs.kist.re.kr/handle/201004/122050 Herein, holmium oxide as a support for nanosized Mn oxide was used toward the synthesis of a new catalyst for water oxidation. A composite of Mn and Ho oxide was synthesized by a simple hydrothermal procedure and characterized by scanning electron microscopy, extended edge X-ray absorption fine structure, transmission electron microscopy, powder X-ray diffraction and electrochemical methods. The effect of calcination temperature on the composite performance for the water-oxidation process was examined in the range of 100-600 degrees C. The turnover frequencies for the catalyst toward water oxidation in the presence of cerium(IV) ammonium nitrate and photo-produced tris(2,2'-bipyridyl) ruthenium(III), [Ru(bpy)(3)](3+) are 0.12 and 0.04 (mmol O-2 per mol Mn s), respectively. In addition, the catalyst shows self-healing in the presence of cerium(IV) ammonium nitrate and under the water-oxidation conditions. English ROYAL SOC CHEMISTRY OXYGEN-EVOLVING COMPLEX SIZED METAL-OXIDES ARTIFICIAL PHOTOSYNTHETIC SYSTEMS POSSIBLE EVOLUTIONARY ORIGIN PROMISING STRUCTURAL MODEL PHOTOSYSTEM-II OXIDIZING CATALYSTS THIN-FILM FUNCTIONAL MODELS IRIDIUM OXIDE Nanosized manganese oxide/holmium oxide: a new composite for water oxidation Article 10.1039/c7nj02747h 1 NEW JOURNAL OF CHEMISTRY, v.41, no.22, pp.13732 - 13741 NEW JOURNAL OF CHEMISTRY 41 22 13732 13741 scie scopus 000414440000060 2-s2.0-85034624595 Chemistry, Multidisciplinary Chemistry Article OXYGEN-EVOLVING COMPLEX SIZED METAL-OXIDES ARTIFICIAL PHOTOSYNTHETIC SYSTEMS POSSIBLE EVOLUTIONARY ORIGIN PROMISING STRUCTURAL MODEL PHOTOSYSTEM-II OXIDIZING CATALYSTS THIN-FILM FUNCTIONAL MODELS IRIDIUM OXIDE water oxidation manganese oxide holmium oxide scanning electron microscopy extended edge X-ray absorption fine structure X-ray diffraction