Fabrication of highly-ordered TiO2 nanocolumns by two-step anodizing of an Al/Ti layer in etidronic acid
TiO2 nanocolumns were fabricated by a two-step anodizing process of an Al/Ti bilayer system and using as electrolyte 0.3 M etidronic acid at 40 °C. To prepare the Al/Ti bilayer samples, two different procedures were employed, obtaining either nanocolumns with or without highly-ordered. It was found...
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| Veröffentlicht in: | Materials chemistry and physics 2018-09, Vol.216, p.51-57 |
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| creator | Sepúlveda, M. Castaño, J.G. Echeverría, F. |
| description | TiO2 nanocolumns were fabricated by a two-step anodizing process of an Al/Ti bilayer system and using as electrolyte 0.3 M etidronic acid at 40 °C. To prepare the Al/Ti bilayer samples, two different procedures were employed, obtaining either nanocolumns with or without highly-ordered. It was found that the titania nanocolumns were chemically stable after selective alumina dissolution in 0.05 M KOH at 50 °C. Nanocolumns of different heights were obtained, height averages ranged between 170 and 689 nm, depending on the potentiodynamic rate and the final voltage employed in the second anodizing step. The diameter of the nanocolumns, in all cases, was about 286 nm. Raman and X-ray diffraction analysis confirmed that after heat treatment at 600 °C for 3 h, the TiO2 nanocolumns have a crystalline structure composed of both anatase and rutile phases.
•An Al/Ti layer was anodizing using a two-step anodizing process.•TiO2 nanocolumns array was fabricated with and without highly-ordered.•TiO2 nanocolumns array has a crystalline structure composed of both anatase and rutile phases after heat treatment.•In the second anodizing step the voltage sweep rates allow increasing the length of the TiO2 nanocolumns. |
| doi_str_mv | 10.1016/j.matchemphys.2018.05.080 |
| format | Article |
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•An Al/Ti layer was anodizing using a two-step anodizing process.•TiO2 nanocolumns array was fabricated with and without highly-ordered.•TiO2 nanocolumns array has a crystalline structure composed of both anatase and rutile phases after heat treatment.•In the second anodizing step the voltage sweep rates allow increasing the length of the TiO2 nanocolumns.</description><identifier>ISSN: 0254-0584</identifier><identifier>EISSN: 1879-3312</identifier><identifier>DOI: 10.1016/j.matchemphys.2018.05.080</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Aluminum oxide ; Anatase ; Anodic alumina membranes ; Anodizing ; Bilayers ; Etidronic acid ; Heat treatment ; Organic chemistry ; Titania nanocolumns ; Titanium ; Titanium dioxide ; Two-step anodizing process</subject><ispartof>Materials chemistry and physics, 2018-09, Vol.216, p.51-57</ispartof><rights>2018 Elsevier B.V.</rights><rights>Copyright Elsevier BV Sep 1, 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c415t-f07d1e4ebb4a8d3f6ce487facb96dd22dd6f7df97b6a6e768932c73bce1f0f723</citedby><cites>FETCH-LOGICAL-c415t-f07d1e4ebb4a8d3f6ce487facb96dd22dd6f7df97b6a6e768932c73bce1f0f723</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0254058418304863$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Sepúlveda, M.</creatorcontrib><creatorcontrib>Castaño, J.G.</creatorcontrib><creatorcontrib>Echeverría, F.</creatorcontrib><title>Fabrication of highly-ordered TiO2 nanocolumns by two-step anodizing of an Al/Ti layer in etidronic acid</title><title>Materials chemistry and physics</title><description>TiO2 nanocolumns were fabricated by a two-step anodizing process of an Al/Ti bilayer system and using as electrolyte 0.3 M etidronic acid at 40 °C. To prepare the Al/Ti bilayer samples, two different procedures were employed, obtaining either nanocolumns with or without highly-ordered. It was found that the titania nanocolumns were chemically stable after selective alumina dissolution in 0.05 M KOH at 50 °C. Nanocolumns of different heights were obtained, height averages ranged between 170 and 689 nm, depending on the potentiodynamic rate and the final voltage employed in the second anodizing step. The diameter of the nanocolumns, in all cases, was about 286 nm. Raman and X-ray diffraction analysis confirmed that after heat treatment at 600 °C for 3 h, the TiO2 nanocolumns have a crystalline structure composed of both anatase and rutile phases.
•An Al/Ti layer was anodizing using a two-step anodizing process.•TiO2 nanocolumns array was fabricated with and without highly-ordered.•TiO2 nanocolumns array has a crystalline structure composed of both anatase and rutile phases after heat treatment.•In the second anodizing step the voltage sweep rates allow increasing the length of the TiO2 nanocolumns.</description><subject>Aluminum oxide</subject><subject>Anatase</subject><subject>Anodic alumina membranes</subject><subject>Anodizing</subject><subject>Bilayers</subject><subject>Etidronic acid</subject><subject>Heat treatment</subject><subject>Organic chemistry</subject><subject>Titania nanocolumns</subject><subject>Titanium</subject><subject>Titanium dioxide</subject><subject>Two-step anodizing process</subject><issn>0254-0584</issn><issn>1879-3312</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqNkMFKxDAQhoMouK6-Q8Rza5K2SXuUxVVhwct6DmkysSndZE26Sn16u6wHj54Ghv_7h_kQuqUkp4Ty-z7fqVF3sNt3U8oZoXVOqpzU5AwtaC2arCgoO0cLwqoyI1VdXqKrlHpCqKC0WKBurdrotBpd8DhY3Ln3bpiyEA1EMHjrXhn2ygcdhsPOJ9xOePwKWRphj-e1cd_Ovx9B5fHDcL91eFATROw8htGZGLzTWGlnrtGFVUOCm9-5RG_rx-3qOdu8Pr2sHjaZLmk1ZpYIQ6GEti1VbQrLNZS1sEq3DTeGMWO4FcY2ouWKg-B1UzAtilYDtcQKVizR3al3H8PHAdIo-3CIfj4pGeOECFpRPqeaU0rHkFIEK_fR7VScJCXyKFb28o9YeRQrSSVnsTO7OrEwv_HpIMqkHXgNxkXQozTB_aPlB-72iXs</recordid><startdate>20180901</startdate><enddate>20180901</enddate><creator>Sepúlveda, M.</creator><creator>Castaño, J.G.</creator><creator>Echeverría, F.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20180901</creationdate><title>Fabrication of highly-ordered TiO2 nanocolumns by two-step anodizing of an Al/Ti layer in etidronic acid</title><author>Sepúlveda, M. ; Castaño, J.G. ; Echeverría, F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c415t-f07d1e4ebb4a8d3f6ce487facb96dd22dd6f7df97b6a6e768932c73bce1f0f723</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Aluminum oxide</topic><topic>Anatase</topic><topic>Anodic alumina membranes</topic><topic>Anodizing</topic><topic>Bilayers</topic><topic>Etidronic acid</topic><topic>Heat treatment</topic><topic>Organic chemistry</topic><topic>Titania nanocolumns</topic><topic>Titanium</topic><topic>Titanium dioxide</topic><topic>Two-step anodizing process</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sepúlveda, M.</creatorcontrib><creatorcontrib>Castaño, J.G.</creatorcontrib><creatorcontrib>Echeverría, F.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Materials chemistry and physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sepúlveda, M.</au><au>Castaño, J.G.</au><au>Echeverría, F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fabrication of highly-ordered TiO2 nanocolumns by two-step anodizing of an Al/Ti layer in etidronic acid</atitle><jtitle>Materials chemistry and physics</jtitle><date>2018-09-01</date><risdate>2018</risdate><volume>216</volume><spage>51</spage><epage>57</epage><pages>51-57</pages><issn>0254-0584</issn><eissn>1879-3312</eissn><abstract>TiO2 nanocolumns were fabricated by a two-step anodizing process of an Al/Ti bilayer system and using as electrolyte 0.3 M etidronic acid at 40 °C. To prepare the Al/Ti bilayer samples, two different procedures were employed, obtaining either nanocolumns with or without highly-ordered. It was found that the titania nanocolumns were chemically stable after selective alumina dissolution in 0.05 M KOH at 50 °C. Nanocolumns of different heights were obtained, height averages ranged between 170 and 689 nm, depending on the potentiodynamic rate and the final voltage employed in the second anodizing step. The diameter of the nanocolumns, in all cases, was about 286 nm. Raman and X-ray diffraction analysis confirmed that after heat treatment at 600 °C for 3 h, the TiO2 nanocolumns have a crystalline structure composed of both anatase and rutile phases.
•An Al/Ti layer was anodizing using a two-step anodizing process.•TiO2 nanocolumns array was fabricated with and without highly-ordered.•TiO2 nanocolumns array has a crystalline structure composed of both anatase and rutile phases after heat treatment.•In the second anodizing step the voltage sweep rates allow increasing the length of the TiO2 nanocolumns.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.matchemphys.2018.05.080</doi><tpages>7</tpages></addata></record> |
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| subjects | Aluminum oxide Anatase Anodic alumina membranes Anodizing Bilayers Etidronic acid Heat treatment Organic chemistry Titania nanocolumns Titanium Titanium dioxide Two-step anodizing process |
| title | Fabrication of highly-ordered TiO2 nanocolumns by two-step anodizing of an Al/Ti layer in etidronic acid |
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