Mousazade, Younes Najafpour, Mohammad Mahdi Bagheri, Robabeh Jaglicic, Zvonko Singh, Jitendra Pal Chae, Keun Hwa Song, Zhenlun Rodionova, Margarita V. Voloshin, Roman A. Shen, Jian-Ren Ramakrishna, Seeram Allakhverdiev, Suleyman I. 2024-01-19T19:31:56Z 2024-01-19T19:31:56Z 2022-01-25 2019-08 1477-9226 https://pubs.kist.re.kr/handle/201004/119700 Phthalocyanines are a promising class of ligands for manganese because of their high binding affinity. This effect is suggested to be an important factor because phthalocyanines tightly bind manganese and stabilize it under moderate conditions. The strong donor power of phthalocyanine is also suggested as a critical factor to stabilize high-valent manganese phthalocyanine. Herein, a manganese(ii) phthalocyanine, which is stable under moderate conditions, was investigated under harsh electrochemical water oxidation. By scanning electron microscopy, transmission electron microscopy, energy dispersive spectrometry, X-ray diffraction, extended X-ray absorption fine structure analysis, X-ray absorption near edge structure analysis, chronoamperometry, magnetic measurements, Fourier-transform infrared spectroscopy, and electrochemical methods, it is shown that manganese phthalocyanine, a known molecular complex showing good stability under moderate conditions, could not withstand water oxidation catalysis and ultimately is altered to form catalytic oxide particles. Such nanosized Mn oxides are the true catalyst for water oxidation. Besides, we try to go a step forward to find an answer as to how Mn oxides form on the surface of the electrode. English ROYAL SOC CHEMISTRY A manganese(ii) phthalocyanine under water-oxidation reaction: new findings Article 10.1039/c9dt01790a 1 DALTON TRANSACTIONS, v.48, no.32, pp.12147 - 12158 DALTON TRANSACTIONS 48 32 12147 12158 N scie scopus 000480592500014 2-s2.0-85070784031 Chemistry, Inorganic & Nuclear Chemistry Article EVOLVING PHOTOSYSTEM-II OXIDIZING CATALYSTS MN OXIDES COMPLEX EFFICIENT METAL NANO ELECTROCHEMISTRY POTENTIALS MECHANISM