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Doping‐induced coloration in titania
Thermal decomposition of Ti3GeC2 MAX phase at 1773 K yields an orange‐colored titania powder. Micro‐XRD of the powder under oscillation mode reveals a pure rutile phase (space group P42/mnm). X‐ray photoelectron spectroscopy confirmed substitutional doping of Ge in the titania lattice. The presence...
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Published in: | Journal of the American Ceramic Society 2021-07, Vol.104 (7), p.2932-2936 |
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container_title | Journal of the American Ceramic Society |
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creator | Mane, Rahul B. Sahoo, Ramkrishna Reddy, Bapathi Kumaar Swamy Ravula, Vijay Panigrahi, Bharat B. Borse, Pramod H. Chakravarty, Dibyendu |
description | Thermal decomposition of Ti3GeC2 MAX phase at 1773 K yields an orange‐colored titania powder. Micro‐XRD of the powder under oscillation mode reveals a pure rutile phase (space group P42/mnm). X‐ray photoelectron spectroscopy confirmed substitutional doping of Ge in the titania lattice. The presence of Ti‐O‐Ge bond was observed in O 1s spectrum and confirmed by the shift in binding energy in Ti 2p3/2 and Ge 3d peaks. The UV‐visible Diffuse Reflectance Spectrum studies on the Ge‐doped titania powder show wide absorption in the visible region (380 to 650 nm) yielding a bandgap of 2.83 eV, which is desirable for photocatalytic applications. Defect states formed due to Ge doping led to lowering of the titania conduction band inducing an orange coloration in the powder. |
doi_str_mv | 10.1111/jace.17790 |
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Micro‐XRD of the powder under oscillation mode reveals a pure rutile phase (space group P42/mnm). X‐ray photoelectron spectroscopy confirmed substitutional doping of Ge in the titania lattice. The presence of Ti‐O‐Ge bond was observed in O 1s spectrum and confirmed by the shift in binding energy in Ti 2p3/2 and Ge 3d peaks. The UV‐visible Diffuse Reflectance Spectrum studies on the Ge‐doped titania powder show wide absorption in the visible region (380 to 650 nm) yielding a bandgap of 2.83 eV, which is desirable for photocatalytic applications. Defect states formed due to Ge doping led to lowering of the titania conduction band inducing an orange coloration in the powder.</description><identifier>ISSN: 0002-7820</identifier><identifier>EISSN: 1551-2916</identifier><identifier>DOI: 10.1111/jace.17790</identifier><language>eng</language><publisher>Columbus: Wiley Subscription Services, Inc</publisher><subject>bandgap ; Conduction bands ; Doping ; Photoelectrons ; Spectrum analysis ; Thermal decomposition ; Titanium ; titanium dioxide ; X‐ray photoelectron spectroscopy</subject><ispartof>Journal of the American Ceramic Society, 2021-07, Vol.104 (7), p.2932-2936</ispartof><rights>2021 The American Ceramic Society</rights><rights>2021 American Ceramic Society</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c2600-c89bfd9997e3007597b73f5edab46d229f384469d8a7b9f526d576dac33f61903</cites><orcidid>0000-0003-1121-9801</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Mane, Rahul B.</creatorcontrib><creatorcontrib>Sahoo, Ramkrishna</creatorcontrib><creatorcontrib>Reddy, Bapathi Kumaar Swamy</creatorcontrib><creatorcontrib>Ravula, Vijay</creatorcontrib><creatorcontrib>Panigrahi, Bharat B.</creatorcontrib><creatorcontrib>Borse, Pramod H.</creatorcontrib><creatorcontrib>Chakravarty, Dibyendu</creatorcontrib><title>Doping‐induced coloration in titania</title><title>Journal of the American Ceramic Society</title><description>Thermal decomposition of Ti3GeC2 MAX phase at 1773 K yields an orange‐colored titania powder. Micro‐XRD of the powder under oscillation mode reveals a pure rutile phase (space group P42/mnm). X‐ray photoelectron spectroscopy confirmed substitutional doping of Ge in the titania lattice. The presence of Ti‐O‐Ge bond was observed in O 1s spectrum and confirmed by the shift in binding energy in Ti 2p3/2 and Ge 3d peaks. The UV‐visible Diffuse Reflectance Spectrum studies on the Ge‐doped titania powder show wide absorption in the visible region (380 to 650 nm) yielding a bandgap of 2.83 eV, which is desirable for photocatalytic applications. Defect states formed due to Ge doping led to lowering of the titania conduction band inducing an orange coloration in the powder.</description><subject>bandgap</subject><subject>Conduction bands</subject><subject>Doping</subject><subject>Photoelectrons</subject><subject>Spectrum analysis</subject><subject>Thermal decomposition</subject><subject>Titanium</subject><subject>titanium dioxide</subject><subject>X‐ray photoelectron spectroscopy</subject><issn>0002-7820</issn><issn>1551-2916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9kMtKxDAUhoMoWEc3PkFBcCF0TNLmthzG8caAG12HNBdJqUlNW2R2PoLP6JPYsa49m8OB7_w_fACcI7hE01w3StslYkzAA5AhQlCBBaKHIIMQ4oJxDI_BSd8304kErzJweRM7H16_P798MKO2JtexjUkNPobch3zwgwpenYIjp9renv3tBXi53Tyv74vt093DerUtNKYQFpqL2hkhBLMlhIwIVrPSEWtUXVGDsXAlryoqDFesFo5gagijRumydBQJWC7AxZzbpfg-2n6QTRxTmColJhgTxCmtJupqpnSKfZ-sk13ybyrtJIJy70HuPchfDxOMZvjDt3b3DykfV-vN_PMD44teuw</recordid><startdate>202107</startdate><enddate>202107</enddate><creator>Mane, Rahul B.</creator><creator>Sahoo, Ramkrishna</creator><creator>Reddy, Bapathi Kumaar Swamy</creator><creator>Ravula, Vijay</creator><creator>Panigrahi, Bharat B.</creator><creator>Borse, Pramod H.</creator><creator>Chakravarty, Dibyendu</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0003-1121-9801</orcidid></search><sort><creationdate>202107</creationdate><title>Doping‐induced coloration in titania</title><author>Mane, Rahul B. ; Sahoo, Ramkrishna ; Reddy, Bapathi Kumaar Swamy ; Ravula, Vijay ; Panigrahi, Bharat B. ; Borse, Pramod H. ; Chakravarty, Dibyendu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2600-c89bfd9997e3007597b73f5edab46d229f384469d8a7b9f526d576dac33f61903</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>bandgap</topic><topic>Conduction bands</topic><topic>Doping</topic><topic>Photoelectrons</topic><topic>Spectrum analysis</topic><topic>Thermal decomposition</topic><topic>Titanium</topic><topic>titanium dioxide</topic><topic>X‐ray photoelectron spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mane, Rahul B.</creatorcontrib><creatorcontrib>Sahoo, Ramkrishna</creatorcontrib><creatorcontrib>Reddy, Bapathi Kumaar Swamy</creatorcontrib><creatorcontrib>Ravula, Vijay</creatorcontrib><creatorcontrib>Panigrahi, Bharat B.</creatorcontrib><creatorcontrib>Borse, Pramod H.</creatorcontrib><creatorcontrib>Chakravarty, Dibyendu</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of the American Ceramic Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mane, Rahul B.</au><au>Sahoo, Ramkrishna</au><au>Reddy, Bapathi Kumaar Swamy</au><au>Ravula, Vijay</au><au>Panigrahi, Bharat B.</au><au>Borse, Pramod H.</au><au>Chakravarty, Dibyendu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Doping‐induced coloration in titania</atitle><jtitle>Journal of the American Ceramic Society</jtitle><date>2021-07</date><risdate>2021</risdate><volume>104</volume><issue>7</issue><spage>2932</spage><epage>2936</epage><pages>2932-2936</pages><issn>0002-7820</issn><eissn>1551-2916</eissn><abstract>Thermal decomposition of Ti3GeC2 MAX phase at 1773 K yields an orange‐colored titania powder. Micro‐XRD of the powder under oscillation mode reveals a pure rutile phase (space group P42/mnm). X‐ray photoelectron spectroscopy confirmed substitutional doping of Ge in the titania lattice. The presence of Ti‐O‐Ge bond was observed in O 1s spectrum and confirmed by the shift in binding energy in Ti 2p3/2 and Ge 3d peaks. The UV‐visible Diffuse Reflectance Spectrum studies on the Ge‐doped titania powder show wide absorption in the visible region (380 to 650 nm) yielding a bandgap of 2.83 eV, which is desirable for photocatalytic applications. Defect states formed due to Ge doping led to lowering of the titania conduction band inducing an orange coloration in the powder.</abstract><cop>Columbus</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1111/jace.17790</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0003-1121-9801</orcidid></addata></record> |
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subjects | bandgap Conduction bands Doping Photoelectrons Spectrum analysis Thermal decomposition Titanium titanium dioxide X‐ray photoelectron spectroscopy |
title | Doping‐induced coloration in titania |
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