{"id":1592,"date":"2024-12-09T10:55:58","date_gmt":"2024-12-09T10:55:58","guid":{"rendered":"https:\/\/catalysis.chem.uoi.gr\/?p=1592"},"modified":"2024-12-09T11:55:51","modified_gmt":"2024-12-09T11:55:51","slug":"engineering-of-oxygen-deficient-nano-ceo2-x-with-tunable-biocidal-and-antioxidant-activity","status":"publish","type":"post","link":"https:\/\/catalysis.chem.uoi.gr\/index.php\/2024\/12\/09\/engineering-of-oxygen-deficient-nano-ceo2-x-with-tunable-biocidal-and-antioxidant-activity\/","title":{"rendered":"Engineering of Oxygen-Deficient Nano-CeO2\u2013x\u00a0with Tunable Biocidal and Antioxidant Activity"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-3\">\n<div class=\"wp-block-column is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/catalysis.chem.uoi.gr\/wp-content\/uploads\/2024\/12\/images_large_an4c00950_0009.jpeg\"><img decoding=\"async\" loading=\"lazy\" width=\"750\" height=\"487\" src=\"https:\/\/catalysis.chem.uoi.gr\/wp-content\/uploads\/2024\/12\/images_large_an4c00950_0009.jpeg\" alt=\"\" class=\"wp-image-1593\" srcset=\"https:\/\/catalysis.chem.uoi.gr\/wp-content\/uploads\/2024\/12\/images_large_an4c00950_0009.jpeg 750w, https:\/\/catalysis.chem.uoi.gr\/wp-content\/uploads\/2024\/12\/images_large_an4c00950_0009-300x195.jpeg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<p>Fotini Fragou, Areti Zindrou, Yiannis Deligiannakis<strong>,<\/strong> Maria Louloudi.<\/p>\n\n\n\n<p><em>ACS Appl. Nano Mater.<\/em>&nbsp;<strong>2024<\/strong>, 7, 9, 10552\u201310564<\/p>\n\n\n\n<p><a href=\"https:\/\/doi.org\/10.1021\/acsanm.4c00950\">https:\/\/doi.org\/10.1021\/acsanm.4c00950<\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n<p><strong>Abstract<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-left\"><em>Biocidal activity and radical scavenging capacity (RSC), two seemingly opposing concepts, can coexist in engineered nanoceria (CeO<sub>2<\/sub>) materials. In the present study, a series of CeO<sub>2\u2013x<\/sub>\u00a0(x\u00a0= 0\u20130.75) nanoparticles have been engineered utilizing the anoxic-flame spray pyrolysis (A-FSP) technology. A-FSP allows for tuning of the physicochemical and structural properties of CeO<sub>2\u2013x<\/sub>\u00a0arising from lattice defects (Ce<sup>3+<\/sup>\u00a0and V<sub>os<\/sub>) while maintaining minimal carbon incorporation. Our study aimed to understand the complex relationships between the biocidal and antioxidant activities of CeO<sub>2\u2013x<\/sub>, concepts whose origin was not sufficiently detangled in the bibliography. The biocide profiles of CeO<sub>2\u2013x<\/sub>\u00a0nanoparticles toward the marine bacterium\u00a0Aliivibrio fischeri\u00a0were studied in tandem with their reactive oxygen species (ROS) scavenging capacity. A key finding of the present study is that the A-FSP process allows selective engineering of cluster-type Ce<sup>3+<\/sup>\u00a0and V<sub>o<\/sub>\u00a0defects, while typical, nonanoxic nanoceria structures (code-named ox-CeO<sub>2<\/sub>) present mainly monomeric Ce<sup>3+<\/sup>\u00a0defects. The type of Ce<sup>3+<\/sup>\u00a0defects directly impacts the ROS scavenging efficiency. In addition, structural modifications that occur from the presence of cluster-type Ce<sup>3+<\/sup>\u00a0defects, such as larger particle sizes, are directly associated with lower biocidal activity. Thus, the findings of this study indicate that biocidal and ROS antioxidant activities are not mutually exclusive properties.<\/em><\/p>\n\n\n\n<p>CeO<sub>2<\/sub>; Flame Spray Pyrolysis; Anoxic; Nanotoxicity; Aliivibrio fischeri; EPR Spectroscopy; \u0391cute \u03a4oxicity; \u0399nterfacial \u0399interactions.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fotini Fragou, Areti Zindrou, Yiannis Deligiannakis, Maria Louloudi. ACS Appl. Nano Mater.&nbsp;2024, 7, 9, 10552\u201310564 https:\/\/doi.org\/10.1021\/acsanm.4c00950 Abstract Biocidal activity and radical scavenging capacity (RSC), two seemingly opposing concepts, can coexist in engineered nanoceria (CeO2) materials. In the present study, a series of CeO2\u2013x\u00a0(x\u00a0= 0\u20130.75) nanoparticles have been engineered utilizing the anoxic-flame spray pyrolysis (A-FSP) technology. &hellip; <a href=\"https:\/\/catalysis.chem.uoi.gr\/index.php\/2024\/12\/09\/engineering-of-oxygen-deficient-nano-ceo2-x-with-tunable-biocidal-and-antioxidant-activity\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Engineering of Oxygen-Deficient Nano-CeO2\u2013x\u00a0with Tunable Biocidal and Antioxidant Activity<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/posts\/1592"}],"collection":[{"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/comments?post=1592"}],"version-history":[{"count":3,"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/posts\/1592\/revisions"}],"predecessor-version":[{"id":1630,"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/posts\/1592\/revisions\/1630"}],"wp:attachment":[{"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/media?parent=1592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/categories?post=1592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/tags?post=1592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}