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This catalyst was synthesized by a straightforward method for the synthesis of an iron\/nickel\/zinc mixed oxide through the calcination of a Fe\/Ni\/Zn organometallic compound. The calcined product contains Fe and Ni as crucial ions for water oxidation, accompanied by the presence of Zn ions. The removal of Zn ions from the mixed oxide provides more active sites on the surface of the catalyst. The composition of the compound was characterized by some common methods and found to be an efficient water-oxidizing catalyst. The catalyst on FTO at pH\u2009=\u200913 yields a current density of 12\u2009mA\/cm<jats:sup>2<\/jats:sup>at 1.2\u2009V (vs. Ag\u2502AgCl). After 5\u2009hours at 1.1\u2009V, the electrode not only shows no decrease in performance, but also shows an increase from 4 to 7\u2009mA\/cm<jats:sup>2<\/jats:sup>in the water oxidation activity. Tafel plot, for the electrode at pH\u2009=\u200913 in KOH solution (0.1\u2009M) showed linearity for the graph of lg j vs. V with both relatively low (220.4\u2009mV per decade) and high overpotentials (903.7\u2009mV per decade).<\/jats:p>","DOI":"10.1038\/s41598-019-40236-y","type":"journal-article","created":{"date-parts":[[2019,3,6]],"date-time":"2019-03-06T11:07:05Z","timestamp":1551870425000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["A trimetallic organometallic precursor for efficient water oxidation"],"prefix":"10.1038","volume":"9","author":[{"given":"Sepideh","family":"Madadkhani","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Reza Babadi","family":"Aghakhanpour","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8500-8236","authenticated-orcid":false,"given":"Jitendra Pal","family":"Singh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robabeh","family":"Bagheri","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3894-670X","authenticated-orcid":false,"given":"Keun Hwa","family":"Chae","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhenlun","family":"Song","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mohammad Mahdi","family":"Najafpour","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2019,3,6]]},"reference":[{"key":"40236_CR1","doi-asserted-by":"publisher","first-page":"15729","DOI":"10.1073\/pnas.0603395103","volume":"103","author":"NS Lewis","year":"2006","unstructured":"Lewis, N. 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