{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T14:05:19Z","timestamp":1762092319648,"version":"build-2065373602"},"reference-count":50,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2012,3,8]],"date-time":"2012-03-08T00:00:00Z","timestamp":1331164800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Am. Ceram. Soc."],"published-print":{"date-parts":[[2012,5]]},"abstract":"<jats:p>\n                    Silica, nitrogen, and nitrogen\u2010plus\u2010silica co\u2010doped titania powders were synthesized\n                    <jats:italic>via<\/jats:italic>\n                    sol\u2013gel method. The products of the synthesis were thermally treated in air and under ammonia flow. The determination of\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:roman>S<\/jats:roman>\n                    <\/jats:styled-content>\n                    i and\/or\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:roman>N<\/jats:roman>\n                    <\/jats:styled-content>\n                    into the\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:roman>T<\/jats:roman>\n                    <\/jats:styled-content>\n                    i\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:roman>O<\/jats:roman>\n                    <\/jats:styled-content>\n                    <jats:sub>2<\/jats:sub>\n                    lattice, and the doped samples' crystal structure, was made by means of\n                    <jats:styled-content style=\"fixed-case\">X<\/jats:styled-content>\n                    \u2010ray powder diffraction, whilst the occurrence of amorphous phase was obtained using the combined Rietveld\u2010\n                    <jats:styled-content style=\"fixed-case\">RIR<\/jats:styled-content>\n                    method. The optical properties of the powders were obtained by diffuse reflectance spectroscopy and their energy band gaps were calculated using the differential reflectance method. The photocatalytic activity of the doped samples was assessed in gas phase under\n                    <jats:styled-content style=\"fixed-case\">UV<\/jats:styled-content>\n                    \u2010light and visible\u2010light irradiation, monitoring the degradation of an organic compound. In addition, the morphology of the samples was further on characterized by means of\n                    <jats:styled-content style=\"fixed-case\">HRTEM<\/jats:styled-content>\n                    . Nitrogen, silica, and co\u2010doping shifted the anatase\u2010to\u2010rutile (A \u2192 R) phase transition toward higher temperatures. Silica was found to enter the anatase lattice, and nitrogen was presumed to enter the titania crystal structure as well. Nitrogen doping and\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:roman>S<\/jats:roman>\n                    <\/jats:styled-content>\n                    i\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:roman>O<\/jats:roman>\n                    <\/jats:styled-content>\n                    <jats:sub>2<\/jats:sub>\n                    \/\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:roman>N<\/jats:roman>\n                    <\/jats:styled-content>\n                    \u2010co\u2010doping shifted the light absorption toward the visible region.\n                  <\/jats:p>","DOI":"10.1111\/j.1551-2916.2012.05135.x","type":"journal-article","created":{"date-parts":[[2012,3,8]],"date-time":"2012-03-08T04:12:40Z","timestamp":1331179960000},"page":"1709-1716","source":"Crossref","is-referenced-by-count":12,"title":["Mineralogical and Optical Characterization of SiO\n                    <sub>2<\/sub>\n                    \u2010, N\u2010, and SiO\n                    <sub>2<\/sub>\n                    \/N\u2010Co\u2010Doped Titania Nanopowders"],"prefix":"10.1111","volume":"95","author":[{"given":"David M.","family":"Tobaldi","sequence":"first","affiliation":[{"name":"Dipartimento di Scienze della Terra Universit\u00e0 di Modena e Reggio Emilia Via S. Eufemia 19 I\u201341100 Modena Italy"}]},{"given":"Lian","family":"Gao","sequence":"additional","affiliation":[{"name":"The State Key Laboratory on High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics 200050 Shanghai China"}]},{"given":"Alessandro F.","family":"Gualtieri","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze della Terra Universit\u00e0 di Modena e Reggio Emilia Via S. 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