The investigation of novel D-pi-A type dyes (MK-3 and MK-4) for visible light driven photochemical hydrogen evolution

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dc.contributor.authorAslan, Emre.
dc.contributor.authorKaraman, Merve.
dc.contributor.authorYanalak, Gizem.
dc.contributor.authorCan, Mustafa.
dc.contributor.authorOzel, Faruk.
dc.contributor.authorPatir, Imren Hatay.
dc.date.accessioned2020-03-26T20:19:31Z
dc.date.available2020-03-26T20:19:31Z
dc.date.issued2019
dc.departmentSelçuk Üniversitesi, Fen Fakültesi, Kimya Bölümüen_US
dc.description.abstractTwo novel donor-n-acceptor (D-pi-A) semiconductor organic dyes have been synthesized for the photochemical hydrogen evolution reaction (HER) to sensitize TiO2 for the first time. The molecular structures of D-pi-A semiconductor organic dyes, which are entitled as MK-3 and MK-4, have been characterized by NMR spectroscopy method; and also electrochemical and optical properties have been investigated by cyclic voltammetry and UV-Vis absorption techniques, respectively. Amount of dye loading on TiO2 surface has been investigated by EDX method. The HER activities have been explored in the presence of triethanolamine (TEOA) as a electron donor reagent under sunlight (solar simulator illumination limited by cut-off filter lambda >= 420 nm) in the absence and presence of co-catalysts (Pt and Cu2WS4). Transient photocurrent densities of MK-3/TiO2 and MK-4/TiO2 electrodes have been reached to 110 mu A cm(-1) and 275 mu A cm(-1), respectively. The photocatalytic HER activities have been relatively enhanced in the presence of the Pt or Cu2WS4 co-catalysts (dye/TiO2/Cu2WS4 or dye/TiO2/Pt) when compared to only dye/TiO2. The HER rates have been found as 427, 1277, 675, 682, 1027 and 795 mu molg(-1) h(-1) for the MK-3/TiO2, MK-3/TiO2 /Pt, MK-3/TiO2/Cu2WS4, MK-4/TiO2, MK-4/TiO2/Pt and MK4/TiO2/Cu2WS4 , respectively. The differences of photochemical activities of MK-3/TiO2 and MK-4/TiO2 have been stated taking into account dye molecule structures. Moreover, the HER mechanism have been described by using electrochemical band energy levels of dyes, TiO2 and Cu2WS4 co-catalyst.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [215M309]; Turkish Academy of Sciences and Selcuk University Scientific Research Foundation [17201020]en_US
dc.description.sponsorshipImren Hatay Patir would like to thank to The Scientific and Technological Research Council of Turkey (TUBITAK) (Grant No: 215M309), for Woman in Science program by UNESCO-Loreal, GEBIP fellowship by Turkish Academy of Sciences and Selcuk University Scientific Research Foundation (17201020) for financial support this study. This paper is consisted of part of Ph.D thesis prepared by Emre Aslan.en_US
dc.identifier.citationAslan, E., Karaman, M., Yanalak, G., Can, M., Ozel, F., Patir, I. H. (2019). The Investigation of Novel D-π-A Type Dyes (MK-3 and MK-4) for Visible Light Driven Photochemical Hydrogen Evolution. Dyes and Pigments, 171, 107710.
dc.identifier.doi10.1016/j.dyepig.2019.107710en_US
dc.identifier.issn0143-7208en_US
dc.identifier.issn1873-3743en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.dyepig.2019.107710
dc.identifier.urihttps://hdl.handle.net/20.500.12395/38302
dc.identifier.volume171en_US
dc.identifier.wosWOS:000484870700079en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorAslan, Emre.
dc.institutionauthorYanalak, Gizem.
dc.institutionauthorPatir, Imren Hatay.
dc.language.isoenen_US
dc.publisherELSEVIER SCI LTDen_US
dc.relation.ispartofDYES AND PIGMENTSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectPhotocatalysisen_US
dc.subjectSolar energy conversionen_US
dc.subjectHydrogen evolutionen_US
dc.subjectD-pi-A organic dyesen_US
dc.titleThe investigation of novel D-pi-A type dyes (MK-3 and MK-4) for visible light driven photochemical hydrogen evolutionen_US
dc.typeArticleen_US

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