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dc.contributor.authorCaux, Marine
dc.contributor.authorFina, Federica
dc.contributor.authorIrvine, John T. S.
dc.contributor.authorIdriss, Hicham
dc.contributor.authorHowe, Russell
dc.date.accessioned2017-11-21T00:33:20Z
dc.date.available2017-11-21T00:33:20Z
dc.date.issued2017-06-01
dc.identifier.citationCaux , M , Fina , F , Irvine , J T S , Idriss , H & Howe , R 2017 , ' Impact of the annealing temperature on Pt/g-C 3 N 4 structure, activity and selectivity between photodegradation and water splitting ' , Catalysis Today , vol. 287 , pp. 182-188 . https://doi.org/10.1016/j.cattod.2016.11.007en
dc.identifier.issn0920-5861
dc.identifier.otherPURE: 247837528
dc.identifier.otherPURE UUID: dd5c7a35-5999-49a0-81b7-5f9d5953c7fc
dc.identifier.otherRIS: urn:6459CBE6A264B59827EC0C891E60A5A9
dc.identifier.otherScopus: 85006952343
dc.identifier.otherORCID: /0000-0003-2594-350X/work/31324727
dc.identifier.otherWOS: 000399006100028
dc.identifier.otherORCID: /0000-0002-8394-3359/work/68280793
dc.identifier.urihttp://hdl.handle.net/10023/12138
dc.descriptionThe authors would like to thank SABIC as well as EPSRC platform grant [EP/K015540/1] for financial support and the Royal Society of Chemistry for a Wolfson Merit Award. In order to protect intellectual property the data underpinning this publication are not made publicly available. All enquiries about the data should be addressed to mc253@st-andrews.ac.uk.en
dc.description.abstractThis work presents a systematic study of the effect of fabrication temperature (450 to 650 °C) on the structure and electronic properties of g-C3N4 prepared from melamine. The work is conducted by X-ray diffraction, elemental analysis, BET nitrogen adsorption, UV–vis absorption, and electron paramagnetic resonance (EPR). The photocatalytic activity is tested for hydrogen production in the presence of oxalic acid (OA) as well as triethanolamine (TEOA). A considerable change in the morphology is observed with increasing the synthesis temperature resulting in an increase of the surface area, likely due to thermal etching. The decrease of charge carriers’ concentration, per unit surface area, with increasing annealing temperature may be due to the decrease of the conjugation of the polymer. Probing the activity of in situ reduced Pt/g-C3N4 for hydrogen evolution reinforced this conclusion, the rate of hydrogen evolution per unit area for OA as well as TEOA decreased with increasing annealing temperature. An interesting finding is the correlation between CO2:H2 ratio and the increase in the band gap of g-C3N4 prepared at different temperatures when using oxalic acid as an electron donor. This suggests that water oxidation becomes easier with increasing band gap energy, probably due to a lowering of the valence band edge.
dc.format.extent7
dc.language.isoeng
dc.relation.ispartofCatalysis Todayen
dc.rights© 2016 Elsevier B.V. All rights reserved. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at: https://doi.org/10.1016/j.cattod.2016.11.007en
dc.subjectPhotocatalysisen
dc.subjectG-C3N4en
dc.subjectSynthesis temperatureen
dc.subjectHydrogen productionen
dc.subjectElectron paramagnetic resonanceen
dc.subjectQD Chemistryen
dc.subjectE-DASen
dc.subject.lccQDen
dc.titleImpact of the annealing temperature on Pt/g-C3N4 structure, activity and selectivity between photodegradation and water splittingen
dc.typeJournal articleen
dc.description.versionPostprinten
dc.contributor.institutionUniversity of St Andrews.School of Chemistryen
dc.contributor.institutionUniversity of St Andrews.The University of St Andrewsen
dc.contributor.institutionUniversity of St Andrews.EaSTCHEMen
dc.identifier.doihttps://doi.org/10.1016/j.cattod.2016.11.007
dc.description.statusPeer revieweden
dc.date.embargoedUntil2017-11-20
dc.identifier.urlhttp://www.sciencedirect.com/science/article/pii/S0920586116307210#appd002en


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