{"id":687,"date":"2021-06-08T08:10:19","date_gmt":"2021-06-08T06:10:19","guid":{"rendered":"https:\/\/funglass.eu\/ssc2021\/?p=687"},"modified":"2021-09-14T14:27:17","modified_gmt":"2021-09-14T12:27:17","slug":"advanced-glasses-ceramics-and-polymeric-materials-and-nano-materials-volf","status":"publish","type":"post","link":"https:\/\/funglass.eu\/ssc2021\/advanced-glasses-ceramics-and-polymeric-materials-and-nano-materials-volf\/","title":{"rendered":"P-02 Borate and silicate glasses doped with Ce3+ and Mn2+ ions for UV-VIS spectral shifting"},"content":{"rendered":"<div id=\"call\"><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"background-color: rgba(255,255,255,0);background-position: center center;background-repeat: no-repeat;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-bottom: 0px;margin-top: 0px;border-width: 0px 0px 0px 0px;border-color:#eae9e9;border-style:solid;\" ><div class=\"fusion-builder-row fusion-row\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-one-full fusion-column-first fusion-column-last\" style=\"margin-top:0px;margin-bottom:0px;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div class=\"fusion-text fusion-text-1\" style=\"transform:translate3d(0,0,0);\"><h3 data-fontsize=\"20\" data-lineheight=\"30\">Topic: Advanced glasses, ceramics and polymeric materials and nano materials<\/h3>\n<\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:10px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><ul class=\"fusion-checklist fusion-checklist-1\" style=\"font-size:14px;line-height:23.8px;\"><li class=\"fusion-li-item\"><span style=\"background-color:#00c9e2;font-size:12.32px;height:23.8px;width:23.8px;margin-right:9.8px;\" class=\"icon-wrapper circle-yes\"><i class=\"fusion-li-icon fa-male fas\" style=\"color:#ffffff;\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\" style=\"margin-left:33.6px;\">\n<p>Jakub Volf<\/p>\n<\/div><\/li><li class=\"fusion-li-item\"><span style=\"background-color:#00c9e2;font-size:12.32px;height:23.8px;width:23.8px;margin-right:9.8px;\" class=\"icon-wrapper circle-yes\"><i class=\"fusion-li-icon fa-university fas\" style=\"color:#ffffff;\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\" style=\"margin-left:33.6px;\">\n<p>University of Chemistry and Technology, Prague, Czech republic<\/p>\n<\/div><\/li><li class=\"fusion-li-item\"><span style=\"background-color:#00c9e2;font-size:12.32px;height:23.8px;width:23.8px;margin-right:9.8px;\" class=\"icon-wrapper circle-yes\"><i class=\"fusion-li-icon fa-graduation-cap fas\" style=\"color:#ffffff;\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\" style=\"margin-left:33.6px;\">\n<p>Department of Inorganic Chemistry<\/p>\n<\/div><\/li><\/ul><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:40px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-text fusion-text-2\" style=\"transform:translate3d(0,0,0);\"><a href=\"https:\/\/funglass.eu\/ssc2021\/wp-content\/uploads\/2021\/06\/P-02_J.-Volf_SSC2021_Borate-and-silicate-glasses-doped-with-Ce3-and-Mn2-ions-for-UV-VIS-spectral-shifting.pdf\" class=\"pdfemb-viewer\" style=\"\" data-width=\"max\" data-height=\"max\"  data-toolbar=\"bottom\" data-toolbar-fixed=\"off\">P-02_J. Volf_SSC2021_Borate and silicate glasses doped with Ce3+ and Mn2+ ions for UV-VIS spectral shifting<br\/><\/a>\n<\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:40px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-text fusion-text-3\" style=\"transform:translate3d(0,0,0);\"><p><u>J. Volf<sup>1*<\/sup><\/u>, P. Va\u0159\u00e1k<sup>1<\/sup>, J. Cajzl<sup>\u00a01<\/sup>, P. Nekvindov\u00e1<sup>\u00a01<\/sup><\/p>\n<p><em><sup>1<\/sup><\/em><em> University of Chemistry and Technology, Prague, Technick\u00e1 5, 166 28, Praha 6, Czechia<\/em><\/p>\n<p><em><sup>*<\/sup><\/em><em> E-mail: jakub.volf@vscht.cz<\/em><\/p>\n<p><strong>Keywords:<\/strong> photoluminescence, silicate, borate, glass, cerium, manganese<\/p>\n<p style=\"text-align: justify;\"><strong>Abstract:<\/strong> This study is aimed to investigate the possibilities of spectral shifting of light radiation by using the combination of Ce<sup>3+<\/sup> and Mn<sup>2+<\/sup> ions in glasses. We focused on the possibility of shifting the radiation from green region of spectra (470-550 nm) to red (650-730 nm) or blue (370-450 nm) regions. The combination of Ce<sup>3+<\/sup> and Mn<sup>3+<\/sup> ions has been shown to manifest this kind of shifting in special types of crystalline matrices [1-3], however it is yet to be investigated in glasses. The type of used matrix and method of preparation can influence the oxidation state of doped ions and their photoluminescence properties (shape and position of emission spectra, photoluminescence lifetime). The use of glasses also has several benefits over crystals in practical applications such as low cost and easy preparation.<\/p>\n<p style=\"text-align: justify;\">To study the influence of glass matrix on photoluminescence, we prepared several types of glasses doped by mixture of Ce<sup>3+<\/sup> and Mn<sup>2+<\/sup> ions. First, two glasses with completely different matrices \u2013 silicate and borate \u2013 were prepared to study their suitability as host matrix for both ions. In addition, a set of borosilicate glasses with varying contents of SiO<sub>2<\/sub> and B<sub>2<\/sub>O<sub>3<\/sub> were prepared and reducing agents were added to the batch to preserve cerium and manganese in +III and +II oxidation state, respectively. The glasses were prepared by a standard melt-quenching technique. Basic optical and physical properties of the glasses were measured, such as refractive index by m-line spectroscopy, density by pycnometric measurement and glass transition temperature by differential scanning calorimetry. Structure of the glasses was studied by Raman spectroscopy. XPS and EPR measurements were carried out to study the oxidation state of doped elements in the glass. Spectroscopic properties were evaluated by absorption spectroscopy and photoluminescence measurements in UV-VIS.<\/p>\n<p style=\"text-align: justify;\">The results indicate that borate and borosilicate glasses are suitable hosts for incorporation of Ce<sup>3+<\/sup> and Mn<sup>2+<\/sup> ions, which results in 650\u00a0nm luminescence under UV excitation. However, pure borate glass displayed poor chemical resistance against water. Silicate glasses were chemically stable, but failed to manifest clear luminescence of Mn<sup>2+<\/sup> ions in the region of 650\u00a0nm. Borosilicate glasses were prepared to combine the advantages of both types of glasses and the best ratio of B<sub>2<\/sub>O<sub>3<\/sub>\/SiO<sub>2<\/sub> content was studied. Reducing agents were found to preserve Mn<sup>2+<\/sup> ions in the glass and therefore enhance Mn<sup>2+<\/sup> photoluminescence. The studied glasses are promising candidates for the use in photobioreactors for enhancing a\u00a0growth of various bio-organisms such as algae.<\/p>\n<p><strong>References<\/strong><\/p>\n<p>[1] L. Wondraczek, et al., Nat. Commun. (2013) 2047. https:\/\/doi.org\/10.1038\/ncomms3047.<\/p>\n<p>[2] B. G. You, et al., Journal of Luminescence (2012) 2433\u20132438. https:\/\/doi.org\/10.1016\/j.jlumin.2012.04.018.<\/p>\n<p>[3] C. Safi, et al., Renewable and Sustainable Energy Reviews (2014) 265\u2013278. https:\/\/doi.org\/10.1016\/j.rser.2014.04.007.<\/p>\n<p><strong><em>Acknowledgments<\/em><\/strong><\/p>\n<p>This work was supported from the grant of MSMT No 21-SVV\/2020.<\/p>\n<\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false},"categories":[7],"tags":[18,20,19,21,16,17],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>P-02 Borate and silicate glasses doped with Ce3+ and Mn2+ ions for UV-VIS spectral shifting - SSC 2021 : Solid State Chemistry<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/funglass.eu\/ssc2021\/advanced-glasses-ceramics-and-polymeric-materials-and-nano-materials-volf\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P-02 Borate and silicate glasses doped with Ce3+ and Mn2+ ions for UV-VIS spectral shifting - 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