Show simple item record

dc.contributor.authorSerin, Ramis B.
dc.contributor.authorAbdullayeva, Nazrin
dc.contributor.authorSankir, Mehmet
dc.date.accessioned2019-12-26T14:53:43Z
dc.date.available2019-12-26T14:53:43Z
dc.date.issued2017
dc.identifier.citationSerin, R., Abdullayeva, N., and Sankir, M. (2017). Dealloyed ruthenium film catalysts for hydrogen generation from chemical hydrides. Materials, 10(7), 738.en_US
dc.identifier.issn1996-1944
dc.identifier.urihttps://www.mdpi.com/1996-1944/10/7/738
dc.identifier.urihttp://hdl.handle.net/20.500.11851/2992
dc.description.abstractThin-film ruthenium (Ru) and copper (Cu) binary alloys have been prepared on a Teflon™ backing layer by cosputtering of the precious and nonprecious metals, respectively. Alloys were then selectively dealloyed by sulfuric acid as an etchant, and their hydrogen generation catalysts performances were evaluated. Sputtering time and power of Cu atoms have been varied in order to tailor the hydrogen generation performances. Similarly, dealloying time and the sulfuric acid concentration have also been altered to tune the morphologies of the resulted films. A maximum hydrogen generation rate of 35 mL min-1 was achieved when Cu sputtering power and time were 200 W and 60 min and while acid concentration and dealloying time were 18 M and 90 min, respectively. It has also been demonstrated that the Ru content in the alloy after dealloying gradually increased with the increasing the sputtering power of Cu. After 90 min dealloying, the Ru to Cu ratio increased to about 190 times that of bare alloy. This is the key issue for observing higher catalytic activity. Interestingly, we have also presented template-free nanoforest-like structure formation within the context of one-step alloying and dealloying used in this study. Last but not least, the long-time hydrogen generation performances of the catalysts system have also been evaluated along 3600 min. During the first 600 min, the catalytic activity was quite stable, while about 24% of the catalytic activity decayed after 3000 min, which still makes these systems available for the development of robust catalyst systems in the area of hydrogen generation. © 2017 by the authors.en_US
dc.language.isoengen_US
dc.publisherMDPI AGen_US
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectHydrogen generationen_US
dc.subjectrutheniumen_US
dc.subjectcopperen_US
dc.subjectcosputteringen_US
dc.subjectdealloyingen_US
dc.subjectporous surfaceen_US
dc.titleDealloyed Ruthenium Film Catalysts for Hydrogen Generation from Chemical Hydridesen_US
dc.typearticleen_US
dc.relation.journalMaterialsen_US
dc.contributor.departmentTOBB ETU, Faculty of Engineering, Department of Material Science & Nanotechnology Engineeringen_US
dc.contributor.departmentTOBB ETÜ, Mühendislik Fakültesi, Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümütr_TR
dc.identifier.volume10
dc.identifier.issue7
dc.relation.tubitakinfo:eu-repo/grantAgreement/TÜBİTAK/MAG/112M474en_US
dc.identifier.wosWOS:000406683000055
dc.identifier.scopus2-s2.0-85021646258
dc.contributor.tobbetuauthorSankır, Mehmet
dc.contributor.YOKid143010
dc.identifier.PubMedIDPMID:28773097
dc.identifier.doi10.3390/ma10070738
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıtr_TR


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record