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<journal-meta>
<journal-id journal-id-type="publisher-id">Front. Chem.</journal-id>
<journal-title>Frontiers in Chemistry</journal-title>
<abbrev-journal-title abbrev-type="pubmed">Front. Chem.</abbrev-journal-title>
<issn pub-type="epub">2296-2646</issn>
<publisher>
<publisher-name>Frontiers Media S.A.</publisher-name>
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<article-id pub-id-type="publisher-id">1208136</article-id>
<article-id pub-id-type="doi">10.3389/fchem.2023.1208136</article-id>
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<subject>Chemistry</subject>
<subj-group>
<subject>Retraction</subject>
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<title-group>
<article-title>Retraction: Effect of bimetal element doping on the low-temperature activity of manganese-based catalysts for NH<sub>3</sub>-SCR</article-title>
<alt-title alt-title-type="left-running-head">Frontiers Editorial Office</alt-title>
<alt-title alt-title-type="right-running-head">
<ext-link ext-link-type="uri" xlink:href="https://doi.org/10.3389/fchem.2023.1208136">10.3389/fchem.2023.1208136</ext-link>
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<collab>Frontiers Editorial Office</collab>
<xref ref-type="corresp" rid="c001">&#x2a;</xref>
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<author-notes>
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<p>
<bold>Approved by:</bold> <ext-link ext-link-type="uri" xlink:href="https://loop.frontiersin.org/people/74958/overview">Lu&#x00ED;s D. Carlos</ext-link>, University of Aveiro, Portugal</p>
</fn>
<corresp id="c001">&#x2a;Correspondence: Frontiers Editorial Office, <email>editorial.office@frontiersin.org</email>
</corresp>
</author-notes>
<pub-date pub-type="epub">
<day>09</day>
<month>05</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="collection">
<year>2023</year>
</pub-date>
<volume>11</volume>
<elocation-id>1208136</elocation-id>
<history>
<date date-type="received">
<day>18</day>
<month>04</month>
<year>2023</year>
</date>
<date date-type="accepted">
<day>19</day>
<month>04</month>
<year>2023</year>
</date>
</history>
<permissions>
<copyright-statement>Copyright &#xa9; 2023 Frontiers Editorial Office.</copyright-statement>
<copyright-year>2023</copyright-year>
<copyright-holder>Frontiers Editorial Office</copyright-holder>
<license xlink:href="http://creativecommons.org/licenses/by/4.0/">
<p>This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.</p>
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<related-article id="RA1" related-article-type="retracted-article" journal-id="Front. Chem." journal-id-type="nlm-ta" xlink:href="10.3389/fchem.2022.957051" ext-link-type="doi">A Retraction of the Original Research Article <article-title>Effect of bimetal element doping on the low-temperature activity of manganese-based catalysts for NH<sub>3</sub>-SCR</article-title> by Li H, Zhang S, Zhang A, Zhang X, Sun Z, Yang C and Zhu Q (2022). Front. Chem. 10:957051. doi: <object-id>10.3389/fchem.2022.957051</object-id>
</related-article>
<custom-meta-wrap>
<custom-meta>
<meta-name>section-at-acceptance</meta-name>
<meta-value>Inorganic Chemistry</meta-value>
</custom-meta>
</custom-meta-wrap>
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<body>
<p>The journal retracts the 22 July 2022 article cited above.</p>
<p>Following concerns regarding the originality of the article, an investigation was conducted in accordance with Frontiers&#x2019; policies. It was found that the article should be retracted, because of an unacceptable level of similarity to the Royal Society of Chemistry Advances article &#x201c;Selective catalytic reduction of NO<sub>x</sub> by low-temperature NH<sub>3</sub> over Mn<sub>x</sub>Zr<sub>1</sub> mixed-oxide catalysts&#x201d; - <ext-link ext-link-type="uri" xlink:href="https://pubs.rsc.org/en/Content/ArticleLanding/2022/RA/D1RA08800A">https://pubs.rsc.org/en/Content/ArticleLanding/2022/RA/D1RA08800A</ext-link>. Following the Committee on Publication Ethics guidelines, this article, published most recently, is retracted.</p>
<p>This retraction was approved by the Chief Editors of Frontiers in Chemistry and the Chief Executive Editor of Frontiers. The authors do not agree to correspondence regarding this retraction.</p>
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