Heidari, Sima Singh, Jitendra Pal Feizi, Hadi Bagheri, Robabeh Chae, Keun Hwa Song, Zhenlun Khatamian, Maasoumeh Najafpour, Mohammad Mahdi 2024-01-19T20:04:00Z 2024-01-19T20:04:00Z 2021-09-02 2019-05 2045-2322 https://pubs.kist.re.kr/handle/201004/120064 Recently, it has been great efforts to synthesize an efficient water-oxidizing catalyst. However, to find the true catalyst in the harsh conditions of the water-oxidation reaction is an open area in science. Herein, we showed that corrosion of some simple manganese salts, MnCO3, MnWO4, Mn-3(PO4)(2) center dot 3H(2)O, and Mn(VO3)(2) center dot xH(2)O, under the water-electrolysis conditions at pH = 6.3, gives an amorphous manganese oxide. This conversion was studied with X-ray absorption spectroscopy (XAS), as well as, scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDXS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), spectroelectrochemistry and electrochemistry methods. When using as a water-oxidizing catalyst, such results are important to display that long-term water oxidation can change the nature of the manganese salts. English Nature Publishing Group Electrochemical water oxidation by simple manganese salts Article 10.1038/s41598-019-44001-z 1 Scientific Reports, v.9 Scientific Reports 9 Y scie scopus 000468770600014 2-s2.0-85066854990 Multidisciplinary Sciences Science & Technology - Other Topics Article RATIONAL DESIGN OXIDE CATALYST NANOSTRUCTURES TRANSFORMATION DEGRADATION INSIGHTS COMPLEX ARRAYS STATES Electrochemical water oxidation manganese salts catalyst X-ray absorption spectroscopy spectroelectrochemistry spectroelectrochemistry