Nanostructured hematite thin films for photoelectrochemical water splitting
Nanostructured hematite thin films prepared by dip coating technique were investigated for their photoelectrochemical activity for generation of hydrogen from water splitting. Structural, morphological and optical analyses of the doped/undoped films were performed by X-ray diffraction, high resoluti...
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| Veröffentlicht in: | Physica. B, Condensed matter Condensed matter, 2018-04, Vol.535, p.67-71 |
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| container_title | Physica. B, Condensed matter |
| container_volume | 535 |
| creator | Maabong, Kelebogile Machatine, Augusto G.J. Mwankemwa, Benard S. Braun, Artur Bora, Debajeet K. Toth, Rita Diale, Mmantsae |
| description | Nanostructured hematite thin films prepared by dip coating technique were investigated for their photoelectrochemical activity for generation of hydrogen from water splitting. Structural, morphological and optical analyses of the doped/undoped films were performed by X-ray diffraction, high resolution field emission-scanning electron microscopy, UV–vis spectrophotometry and Raman spectroscopy. The photoelectrochemical measurements of the films showed enhanced photoresponse and cathodic shift of the onset potential upon Ti doping indicating improved transfer of photoholes at the semiconductor-electrolyte interface. Films doped with 1at% Ti produced 0.72mA/cm2 at 1.23V vs RHE which is 2 times higher than current density for the pure film (0.30mA/cm2, at 1.23V vs RHE). Gas chromatography analysis of the films also showed enhanced hydrogen evolution at 1at% Ti with respect to pure film. |
| doi_str_mv | 10.1016/j.physb.2017.06.054 |
| format | Article |
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Structural, morphological and optical analyses of the doped/undoped films were performed by X-ray diffraction, high resolution field emission-scanning electron microscopy, UV–vis spectrophotometry and Raman spectroscopy. The photoelectrochemical measurements of the films showed enhanced photoresponse and cathodic shift of the onset potential upon Ti doping indicating improved transfer of photoholes at the semiconductor-electrolyte interface. Films doped with 1at% Ti produced 0.72mA/cm2 at 1.23V vs RHE which is 2 times higher than current density for the pure film (0.30mA/cm2, at 1.23V vs RHE). Gas chromatography analysis of the films also showed enhanced hydrogen evolution at 1at% Ti with respect to pure film.</description><identifier>ISSN: 0921-4526</identifier><identifier>EISSN: 1873-2135</identifier><identifier>DOI: 10.1016/j.physb.2017.06.054</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Diffraction ; Dip coating ; Field emission microscopy ; Gas chromatography ; Hematite ; Hydrogen evolution ; Immersion coating ; Microscopy ; Nanostructure ; Nanostructured materials ; Photoelectrochemical ; Scanning electron microscopy ; Spectrophotometry ; Thin films ; Ti-doping ; Water ; Water splitting ; X-ray diffraction</subject><ispartof>Physica. 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B, Condensed matter</title><description>Nanostructured hematite thin films prepared by dip coating technique were investigated for their photoelectrochemical activity for generation of hydrogen from water splitting. Structural, morphological and optical analyses of the doped/undoped films were performed by X-ray diffraction, high resolution field emission-scanning electron microscopy, UV–vis spectrophotometry and Raman spectroscopy. The photoelectrochemical measurements of the films showed enhanced photoresponse and cathodic shift of the onset potential upon Ti doping indicating improved transfer of photoholes at the semiconductor-electrolyte interface. Films doped with 1at% Ti produced 0.72mA/cm2 at 1.23V vs RHE which is 2 times higher than current density for the pure film (0.30mA/cm2, at 1.23V vs RHE). Gas chromatography analysis of the films also showed enhanced hydrogen evolution at 1at% Ti with respect to pure film.</description><subject>Diffraction</subject><subject>Dip coating</subject><subject>Field emission microscopy</subject><subject>Gas chromatography</subject><subject>Hematite</subject><subject>Hydrogen evolution</subject><subject>Immersion coating</subject><subject>Microscopy</subject><subject>Nanostructure</subject><subject>Nanostructured materials</subject><subject>Photoelectrochemical</subject><subject>Scanning electron microscopy</subject><subject>Spectrophotometry</subject><subject>Thin films</subject><subject>Ti-doping</subject><subject>Water</subject><subject>Water splitting</subject><subject>X-ray diffraction</subject><issn>0921-4526</issn><issn>1873-2135</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp9kD1PwzAQhi0EEqXwC1giMSec7cRJBgZU8SUqWGC2HOdCXKVxsB1Q_z0uZeaWW97nTu9DyCWFjAIV15ts6ne-yRjQMgORQZEfkQWtSp4yyotjsoCa0TQvmDglZ95vIA4t6YI8v6jR-uBmHWaHbdLjVgUTMAm9GZPODFufdNYlU2-DxQF1cFbHkNFqSL5VQJf4aTAhmPHjnJx0avB48beX5P3-7m31mK5fH55Wt-tU81KElELDNKBoFGJRcwV5pbtW6LpmHVecqYqVum5Ei1rwkmtOqwoQRM0pz3nstCRXh7uTs58z-iA3dnZjfCkZRCQvyqqOKX5IaWe9d9jJyZmtcjtJQe6tyY38tSb31iQIGa1F6uZAYSzwZdBJrw2OGlvjYnnZWvMv_wMxqXe6</recordid><startdate>20180415</startdate><enddate>20180415</enddate><creator>Maabong, Kelebogile</creator><creator>Machatine, Augusto G.J.</creator><creator>Mwankemwa, Benard S.</creator><creator>Braun, Artur</creator><creator>Bora, Debajeet K.</creator><creator>Toth, Rita</creator><creator>Diale, Mmantsae</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20180415</creationdate><title>Nanostructured hematite thin films for photoelectrochemical water splitting</title><author>Maabong, Kelebogile ; Machatine, Augusto G.J. ; Mwankemwa, Benard S. ; Braun, Artur ; Bora, Debajeet K. ; Toth, Rita ; Diale, Mmantsae</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c376t-10b2c0e6baee593a048cfd6c992f3a32a827c9b6dec6373c31880e06931343873</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Diffraction</topic><topic>Dip coating</topic><topic>Field emission microscopy</topic><topic>Gas chromatography</topic><topic>Hematite</topic><topic>Hydrogen evolution</topic><topic>Immersion coating</topic><topic>Microscopy</topic><topic>Nanostructure</topic><topic>Nanostructured materials</topic><topic>Photoelectrochemical</topic><topic>Scanning electron microscopy</topic><topic>Spectrophotometry</topic><topic>Thin films</topic><topic>Ti-doping</topic><topic>Water</topic><topic>Water splitting</topic><topic>X-ray diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Maabong, Kelebogile</creatorcontrib><creatorcontrib>Machatine, Augusto G.J.</creatorcontrib><creatorcontrib>Mwankemwa, Benard S.</creatorcontrib><creatorcontrib>Braun, Artur</creatorcontrib><creatorcontrib>Bora, Debajeet K.</creatorcontrib><creatorcontrib>Toth, Rita</creatorcontrib><creatorcontrib>Diale, Mmantsae</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physica. B, Condensed matter</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Maabong, Kelebogile</au><au>Machatine, Augusto G.J.</au><au>Mwankemwa, Benard S.</au><au>Braun, Artur</au><au>Bora, Debajeet K.</au><au>Toth, Rita</au><au>Diale, Mmantsae</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Nanostructured hematite thin films for photoelectrochemical water splitting</atitle><jtitle>Physica. B, Condensed matter</jtitle><date>2018-04-15</date><risdate>2018</risdate><volume>535</volume><spage>67</spage><epage>71</epage><pages>67-71</pages><issn>0921-4526</issn><eissn>1873-2135</eissn><abstract>Nanostructured hematite thin films prepared by dip coating technique were investigated for their photoelectrochemical activity for generation of hydrogen from water splitting. Structural, morphological and optical analyses of the doped/undoped films were performed by X-ray diffraction, high resolution field emission-scanning electron microscopy, UV–vis spectrophotometry and Raman spectroscopy. The photoelectrochemical measurements of the films showed enhanced photoresponse and cathodic shift of the onset potential upon Ti doping indicating improved transfer of photoholes at the semiconductor-electrolyte interface. Films doped with 1at% Ti produced 0.72mA/cm2 at 1.23V vs RHE which is 2 times higher than current density for the pure film (0.30mA/cm2, at 1.23V vs RHE). Gas chromatography analysis of the films also showed enhanced hydrogen evolution at 1at% Ti with respect to pure film.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.physb.2017.06.054</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Diffraction Dip coating Field emission microscopy Gas chromatography Hematite Hydrogen evolution Immersion coating Microscopy Nanostructure Nanostructured materials Photoelectrochemical Scanning electron microscopy Spectrophotometry Thin films Ti-doping Water Water splitting X-ray diffraction |
| title | Nanostructured hematite thin films for photoelectrochemical water splitting |
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