Electronic Structure of Tantalum Oxynitride Perovskite Photocatalysts

The tantalum oxynitride perovskites ATaO2N (A = Ca, Sr, and Ba) and PrTaON2 are promising candidates for the photocatalytic splitting of water under illumination with visible light. A combination of X-ray photoemission spectroscopy (XPS), Kelvin probe force microscopy (KPFM), UV–vis spectroscopy, an...

Full description

Saved in:
Bibliographic Details
Published in:Chemistry of materials 2013-08, Vol.25 (16), p.3337-3343
Main Authors: Balaz, Snjezana, Porter, Spencer H, Woodward, Patrick M, Brillson, Leonard J
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by cdi_FETCH-LOGICAL-a325t-b4fd074a6de2227742f9b24dac44af205cc239dbf2e8546a2c1403e6b1708c783
cites cdi_FETCH-LOGICAL-a325t-b4fd074a6de2227742f9b24dac44af205cc239dbf2e8546a2c1403e6b1708c783
container_end_page 3343
container_issue 16
container_start_page 3337
container_title Chemistry of materials
container_volume 25
creator Balaz, Snjezana
Porter, Spencer H
Woodward, Patrick M
Brillson, Leonard J
description The tantalum oxynitride perovskites ATaO2N (A = Ca, Sr, and Ba) and PrTaON2 are promising candidates for the photocatalytic splitting of water under illumination with visible light. A combination of X-ray photoemission spectroscopy (XPS), Kelvin probe force microscopy (KPFM), UV–vis spectroscopy, and depth-resolved cathodoluminescence spectroscopy (DRCLS) has been used to determine the absolute conduction and valence band energy levels of these four compounds. All have conduction band edges that lie above the reduction potential for water and therefore are suitable for the photocatalytic production of hydrogen, whereas the valence band edges lie near the oxidation potential of water. The position of the conduction band edge is closely linked to the Ta–O/N–Ta bond angles and hence tilting of the octahedra, whereas the position of the valence band edge is more sensitive to the oxygen-to-nitrogen ratio.
doi_str_mv 10.1021/cm401815w
format article
fullrecord <record><control><sourceid>acs_cross</sourceid><recordid>TN_cdi_crossref_primary_10_1021_cm401815w</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>c678419324</sourcerecordid><originalsourceid>FETCH-LOGICAL-a325t-b4fd074a6de2227742f9b24dac44af205cc239dbf2e8546a2c1403e6b1708c783</originalsourceid><addsrcrecordid>eNptz0FLxDAQBeAgCtbVg_-gFw8eqpNp0qRHWeoqLKzgei5pmmDXbSNJqvbfW1nx5Om9w8cwj5BLCjcUkN7qngGVlH8ekYRyhIwD4DFJQJYiY4IXp-QshB0AnblMSFXtjY7eDZ1On6MfdRy9SZ1Nt2qIaj_26eZrGrrou9akT8a7j_DWxbm-uui0mskUYjgnJ1btg7n4zQV5ua-2y4dsvVk9Lu_WmcqRx6xhtgXBVNEaRBSCoS0bZK3SjCmLwLXGvGwbi0ZyVijUlEFuioYKkFrIfEGuD3e1dyF4Y-t33_XKTzWF-md__bd_tlcHq3Sod270w_zZP-4ba81alA</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Electronic Structure of Tantalum Oxynitride Perovskite Photocatalysts</title><source>American Chemical Society:Jisc Collections:American Chemical Society Read &amp; Publish Agreement 2022-2024 (Reading list)</source><creator>Balaz, Snjezana ; Porter, Spencer H ; Woodward, Patrick M ; Brillson, Leonard J</creator><creatorcontrib>Balaz, Snjezana ; Porter, Spencer H ; Woodward, Patrick M ; Brillson, Leonard J</creatorcontrib><description>The tantalum oxynitride perovskites ATaO2N (A = Ca, Sr, and Ba) and PrTaON2 are promising candidates for the photocatalytic splitting of water under illumination with visible light. A combination of X-ray photoemission spectroscopy (XPS), Kelvin probe force microscopy (KPFM), UV–vis spectroscopy, and depth-resolved cathodoluminescence spectroscopy (DRCLS) has been used to determine the absolute conduction and valence band energy levels of these four compounds. All have conduction band edges that lie above the reduction potential for water and therefore are suitable for the photocatalytic production of hydrogen, whereas the valence band edges lie near the oxidation potential of water. The position of the conduction band edge is closely linked to the Ta–O/N–Ta bond angles and hence tilting of the octahedra, whereas the position of the valence band edge is more sensitive to the oxygen-to-nitrogen ratio.</description><identifier>ISSN: 0897-4756</identifier><identifier>EISSN: 1520-5002</identifier><identifier>DOI: 10.1021/cm401815w</identifier><language>eng</language><publisher>American Chemical Society</publisher><ispartof>Chemistry of materials, 2013-08, Vol.25 (16), p.3337-3343</ispartof><rights>Copyright © 2013 American Chemical Society</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a325t-b4fd074a6de2227742f9b24dac44af205cc239dbf2e8546a2c1403e6b1708c783</citedby><cites>FETCH-LOGICAL-a325t-b4fd074a6de2227742f9b24dac44af205cc239dbf2e8546a2c1403e6b1708c783</cites></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>Balaz, Snjezana</creatorcontrib><creatorcontrib>Porter, Spencer H</creatorcontrib><creatorcontrib>Woodward, Patrick M</creatorcontrib><creatorcontrib>Brillson, Leonard J</creatorcontrib><title>Electronic Structure of Tantalum Oxynitride Perovskite Photocatalysts</title><title>Chemistry of materials</title><addtitle>Chem. Mater</addtitle><description>The tantalum oxynitride perovskites ATaO2N (A = Ca, Sr, and Ba) and PrTaON2 are promising candidates for the photocatalytic splitting of water under illumination with visible light. A combination of X-ray photoemission spectroscopy (XPS), Kelvin probe force microscopy (KPFM), UV–vis spectroscopy, and depth-resolved cathodoluminescence spectroscopy (DRCLS) has been used to determine the absolute conduction and valence band energy levels of these four compounds. All have conduction band edges that lie above the reduction potential for water and therefore are suitable for the photocatalytic production of hydrogen, whereas the valence band edges lie near the oxidation potential of water. The position of the conduction band edge is closely linked to the Ta–O/N–Ta bond angles and hence tilting of the octahedra, whereas the position of the valence band edge is more sensitive to the oxygen-to-nitrogen ratio.</description><issn>0897-4756</issn><issn>1520-5002</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNptz0FLxDAQBeAgCtbVg_-gFw8eqpNp0qRHWeoqLKzgei5pmmDXbSNJqvbfW1nx5Om9w8cwj5BLCjcUkN7qngGVlH8ekYRyhIwD4DFJQJYiY4IXp-QshB0AnblMSFXtjY7eDZ1On6MfdRy9SZ1Nt2qIaj_26eZrGrrou9akT8a7j_DWxbm-uui0mskUYjgnJ1btg7n4zQV5ua-2y4dsvVk9Lu_WmcqRx6xhtgXBVNEaRBSCoS0bZK3SjCmLwLXGvGwbi0ZyVijUlEFuioYKkFrIfEGuD3e1dyF4Y-t33_XKTzWF-md__bd_tlcHq3Sod270w_zZP-4ba81alA</recordid><startdate>20130827</startdate><enddate>20130827</enddate><creator>Balaz, Snjezana</creator><creator>Porter, Spencer H</creator><creator>Woodward, Patrick M</creator><creator>Brillson, Leonard J</creator><general>American Chemical Society</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20130827</creationdate><title>Electronic Structure of Tantalum Oxynitride Perovskite Photocatalysts</title><author>Balaz, Snjezana ; Porter, Spencer H ; Woodward, Patrick M ; Brillson, Leonard J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a325t-b4fd074a6de2227742f9b24dac44af205cc239dbf2e8546a2c1403e6b1708c783</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Balaz, Snjezana</creatorcontrib><creatorcontrib>Porter, Spencer H</creatorcontrib><creatorcontrib>Woodward, Patrick M</creatorcontrib><creatorcontrib>Brillson, Leonard J</creatorcontrib><collection>CrossRef</collection><jtitle>Chemistry of materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Balaz, Snjezana</au><au>Porter, Spencer H</au><au>Woodward, Patrick M</au><au>Brillson, Leonard J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electronic Structure of Tantalum Oxynitride Perovskite Photocatalysts</atitle><jtitle>Chemistry of materials</jtitle><addtitle>Chem. Mater</addtitle><date>2013-08-27</date><risdate>2013</risdate><volume>25</volume><issue>16</issue><spage>3337</spage><epage>3343</epage><pages>3337-3343</pages><issn>0897-4756</issn><eissn>1520-5002</eissn><abstract>The tantalum oxynitride perovskites ATaO2N (A = Ca, Sr, and Ba) and PrTaON2 are promising candidates for the photocatalytic splitting of water under illumination with visible light. A combination of X-ray photoemission spectroscopy (XPS), Kelvin probe force microscopy (KPFM), UV–vis spectroscopy, and depth-resolved cathodoluminescence spectroscopy (DRCLS) has been used to determine the absolute conduction and valence band energy levels of these four compounds. All have conduction band edges that lie above the reduction potential for water and therefore are suitable for the photocatalytic production of hydrogen, whereas the valence band edges lie near the oxidation potential of water. The position of the conduction band edge is closely linked to the Ta–O/N–Ta bond angles and hence tilting of the octahedra, whereas the position of the valence band edge is more sensitive to the oxygen-to-nitrogen ratio.</abstract><pub>American Chemical Society</pub><doi>10.1021/cm401815w</doi><tpages>7</tpages></addata></record>
fulltext fulltext
identifier ISSN: 0897-4756
ispartof Chemistry of materials, 2013-08, Vol.25 (16), p.3337-3343
issn 0897-4756
1520-5002
language eng
recordid cdi_crossref_primary_10_1021_cm401815w
source American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list)
title Electronic Structure of Tantalum Oxynitride Perovskite Photocatalysts
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-24T13%3A04%3A49IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-acs_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Electronic%20Structure%20of%20Tantalum%20Oxynitride%20Perovskite%20Photocatalysts&rft.jtitle=Chemistry%20of%20materials&rft.au=Balaz,%20Snjezana&rft.date=2013-08-27&rft.volume=25&rft.issue=16&rft.spage=3337&rft.epage=3343&rft.pages=3337-3343&rft.issn=0897-4756&rft.eissn=1520-5002&rft_id=info:doi/10.1021/cm401815w&rft_dat=%3Cacs_cross%3Ec678419324%3C/acs_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-a325t-b4fd074a6de2227742f9b24dac44af205cc239dbf2e8546a2c1403e6b1708c783%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true