G. S. Zakharova, N. V. Podval’naya, T. I. Gorbunova, M. G. Pervova, A. N. Enyashin
{"title":"Hydrothermal Synthesis and Photocatalytic Properties of Iron-Doped Tungsten Oxide","authors":"G. S. Zakharova, N. V. Podval’naya, T. I. Gorbunova, M. G. Pervova, A. N. Enyashin","doi":"10.1134/s0036023624700554","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Hexagonal <i>h</i>-WO<sub>3</sub>-based substitutional solid solutions of general formula <i>h-</i>W<sub>1–<i>x</i></sub>Fe<sub><i>x</i></sub>O<sub>3</sub>, where 0.01 ≤ <i>x</i> ≤ 0.06 were prepared by hydrothermal synthesis. The crystal lattice of the prepared <i>h-</i>W<sub>1–<i>x</i></sub>Fe<sub><i>x</i></sub>O<sub>3</sub> compounds is stabilized by <span>\\({\\text{NH}}_{4}^{ + }\\)</span> ions in hexagonal channels. Quantum-chemical calculations showed that dopant iron ions replace cations in the tungsten sublattice, and are not intercalated into lattice channels. The dopant is not an independent participant in reactions involving <i>h</i>-W<sub>1–<i>x</i></sub>Fe<sub><i>x</i></sub>O<sub>3</sub>, but only causes the reorganization of the near-Fermi states of the <i>h</i>-WO<sub>3</sub> matrix. The extent of the dopant homogeneity range of the solid solution is determined by the pH of the working solution. The <i>h</i>-W<sub>0.94</sub>Fe<sub>0.06</sub>O<sub>3</sub> prepared at pH 2.3 has the largest specific surface area, equal to 108 m<sup>2</sup>/g. Its photocatalytic activity in 1,2,4-trichlorobenzene (TCB) photodegradation is several times that of <i>m</i>-W<sub>0.94</sub>Fe<sub>0.06</sub>O<sub>3</sub>.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"15 1","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Inorganic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1134/s0036023624700554","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Hexagonal h-WO3-based substitutional solid solutions of general formula h-W1–xFexO3, where 0.01 ≤ x ≤ 0.06 were prepared by hydrothermal synthesis. The crystal lattice of the prepared h-W1–xFexO3 compounds is stabilized by \({\text{NH}}_{4}^{ + }\) ions in hexagonal channels. Quantum-chemical calculations showed that dopant iron ions replace cations in the tungsten sublattice, and are not intercalated into lattice channels. The dopant is not an independent participant in reactions involving h-W1–xFexO3, but only causes the reorganization of the near-Fermi states of the h-WO3 matrix. The extent of the dopant homogeneity range of the solid solution is determined by the pH of the working solution. The h-W0.94Fe0.06O3 prepared at pH 2.3 has the largest specific surface area, equal to 108 m2/g. Its photocatalytic activity in 1,2,4-trichlorobenzene (TCB) photodegradation is several times that of m-W0.94Fe0.06O3.
期刊介绍：
Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.
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