gtu_logoCHEMISTRY

Prof. Dr. Ümit DEMİR
Chemistry

Ümit DEMİR
Phone
+90 (262) 605 3022
Email
demiru@gtu.edu.tr
Office
, Kimya 254
Areas of interest
Electroanalytical Methods, Electrocatalysis, Supercapacitors, Electrochemical Compound Semiconductor, Polymer and Metal Oxide Synthesis, Solar Cells, Photoelectrochemical Cells, Amperometric Sensors

  1. Ü. DEMİR, M. ERYİĞİT, S. MOBTAKERI, E. P. GÜR, E. TEMUR, T. ÖZNÜLÜER ÖZER, E. GÜR, "Efficient CdS quantum dot sensitized solar cells based on electrochemically reduced graphene oxide (ERGO)/ZnO nanowall photoanodes and MoS2, WS2, CuS cascaded counter electrodes", Solar Energy, 2022, 234, 234, 348-359.
  2. E. TEMUR, M. ERYİGİT, H.O. DOGAN, E. CEPNİ, U. DEMİR, "Electrochemical fabrication and reductive doping of electrochemically reduced graphene oxide decorated with TiO2 electrode with highly enhanced photoresponse under visible light", APPLIED SURFACE SCIENCE, 2022, 0169-4332, 581
  3. B.K. URHAN, H.O. DOGAN, T.O. OZER, U. DEMİR, "Palladium-coated polyaniline nanofiber electrode as an efficient electrocatalyst for hydrogen evolution reaction", INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2022, 0360-3199, 47, 7, 4631-4640.
  4. B.K. URHAN, H.O. DOGAN, E. CEPNİ, M. ERYİGİT, U. DEMİR, T.O. OZER, "Ni(OH)(2) electrochemically reduced graphene oxide nanocomposites as anode electrocatalyst for direct ethanol fuel cell in alkaline media", CHEMICAL PHYSICS LETTERS, 2021, 0009 2614, 763.
  5. H.O. DOGAN, B.K. URHAN, T. O. OZER, U. DEMİR, "One-Pot Electrochemical Fabrication of SnO-Reduced Graphen Oxide Electrodes for Amperometric Sensing of Dopamine"   </span>MACEDONIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING, 2021, 1857-5552, 40, 2, 299-306
  6. B.K. URHAN, U. DEMİR, T.O. OZER, H. O. DOGAN, Electrochemical fabrication of Ni nanoparticles-decorated electrochemically reduced graphene oxide composite electrode for non-enzymatic glucose detection, THIN SOLID FILMS, 2020, 0040- 6090, 693
  7. B.K. Urhan, H.O. Doğan, T.O. Özer, U. Demir, One-pot Electrochemical Synthesis of Ni Nanoparticles-Decorated Electroreduced Graphene Oxide for Improved NADH Sensing, ELECTROANALYSIS, 2020, 1040-0397, 32, 10, 2323- 2329.
  8. K. Urhan, T. Öznülüer, Ü. Demir, H.O. Doğan "One-Pot Electrochemical Synthesis of Lead Oxide-Electrochemically Reduced Graphene Oxide Nanostructures and Their Electrocatalytic Applications" IEEE SENSORS JOURNAL, 2019, 1530-437X, 19, 13, 4781-4788.
  9. Bingül Kurt Urhan, Ümit Demir "Electrochemical fabrication of Ni or Ni(OH)2@Ni nanoparticle-decorated reduced graphene oxide for supercapacitor applications" Electrochimica Acta,2019, 302, 109.
  10. Sima Rezalou,Tuba Öznülüer,Ümit Demir “One-Pot Electrochemical Fabrication of Single-Crystalline SnO Nanostructures on Si and ITO Substrates for Catalytic, Sensor and Energy Storage Applications” Appl. Surf. Sci.,2018, 448, 510.
  11. Tuba Öznülüer,Ümit Demir,Hülya Öztürk Doğan"Fabrication of underpotentially deposited Cu monolayer/electrochemically reduced graphene oxide layered nanocomposites for enhanced ethanol electro-oxidation” Appl. Catal. B Environ. 2018, 235, 56.
  12. Cemile Kartal, Yeşim Hanedar, Tuba Öznülüer, Ümit Demir “Stoichiometry, Morphology, and Size-Controlled Electrochemical Fabrication of CuxO (x = 1, 2) at Underpotential"Langmuir;2017, 33(16), 3960.
  13. Yesim Hanedar, Umit Demir,Tuba Oznuluer "Electrochemical synthesis and photoelectrochemical properties of grass-like nanostructured a-Fe2O3photoanodes for use in solar water oxidation" Superlattices and Microstruct., 2016, 98, 371.
  14. Fatma Bayrakçeken Nişancı,Tuba Öznülüer, Ümit Demir “Photoelectrochemicalproperties of nanostructured ZnO prepared by controlled electrochemical underpotential deposition”Electrochimica Acta, 2013, 108, 281.
  15. Hulya Özturk Doğan, Duygu Ekinci, Ümit Demir“Atomic scale imaging and spectroscopic characterization ofelectrochemically reduced graphene oxide” Surface Science,2013,;611,54.
  16. Fatma Bayrakçeken Nişancı, Ümit Demir“Size-controlled electrochemical growth of PbS nanostructures into electrochemically patterned self-assembled monolayers”, Langmuir, 2012, 28 (22): 8571-8578.
  17. İbrahim Erdoğan and Ümit Demir,“Orientation-controlled synthesis and characterization of Bi2Te3nanofilms, and nanowires via electrochemical co-deposition”, Electrochimica Acta,2011, 56 2385–2393.
  18. İlkay Sisman and Ümit Demir"Electrochemical growth and characterization of size-quantized CdTe thin films grown by underpotential deposition. J.Electroanal. Chem., 2011, 651 (2): 222-227.
  19. İbrahim Erdoğan, Ümit Demir, One-step electrochemical preparation of the ternary (BixSb1-x)2Te3thin films on Au(111): Composition-dependent growth and characterization studies"Electrochim. Acta, 2010,55 (22): 6402-6407.
  20. Murat Alanyalıoglu, Fatma Bayrakceken and Ümit Demir, Preparation of PbS thin films: A new electrochemical route for underpotential deposition. Electrochim.2009,54 (26): 6554 6559.
  21. İbrahim Erdoğan, Ümit Demir"Synthesis and characterization of Sb2Te3 nanofilms via electrochemical co-deposition method. J. Electroanal. Chem, 2009, 633 (1): 253-258.
  22. İbrahim Y Erdogan, Tuba Oznuluer, Ferhat Bülbül and Ümit Demir, Characterization of size quantized PbTe thin films synthesized by an electrochemical co-deposition method. Thin Solid Films, 2009, 517 (18): 5419-5424.
  23. Faruk Pak, Duygu Ekinci, Ferhan Tümer, Ümit Demir “A mechanistic and characteristic investigation of electrooxidation of 2-amino-3-cyano-4-methylthiophene” Macromolecular Chemistry and Physics, 2007, 208(21), 2367.
  24. İlkay Şişman, Murat Alanyalıoğlu, and Ümit Demir “Atom-by-Atom Growth of CdS Thin Films by an Electrochemical Co-deposition Method:Effects of pH on the Growth Mechanism and Structure” J. Phys. Chem.C, 2007, 111, 2670.
  25. Tüba Öznülüer, İbrahim Erdoğan, and Ümit Demir “An Electrochemically Induced Atom-by-Atom Growth of ZnS Thin Films: A New Approach for ZnS Co-deposition” Langmuir, 2006, 22(9), 4415.
  26. Tüba Öznülüer, İbrahim Erdoğan, İlkay Şişman, and Ümit Demir “Electrochemical Atom-by-Atom Growth of PbS by Modified ECALE method” Chemistry of Materials, 2005, 17, 935 937.
  27. Coruh U,Tümer F, Vazquez-Lopez E M,Demir U.“2-Amino-4-(2-naphthyl)thiophene-carbonitrile”Acta Crystallographica Section E-Structure Reports Online,2005, 61, 01680 01682.
  28. Duygu Ekinci, Ferhan Tümer, and Ümit Demir “Synthesis and characterization of electropolymerized poly(2-amino-3cyano-4-beta-napthylthiophene)” Macromolecules, 2004, 37(19), 7168.
  29. Ferhan Tümer, Duygu Ekinci, Kani Zilbeyaz, Ümit Demir “ An efficient synthesis of substituted 4-aryl-3-cyano-2-amino thiophenes by a stepwise Gewald reaction” Turkish Journal of Chemistry, 2004, 28(4), 395.
  30. Duygu Ekinci, Ferhan Tümer, and Ümit Demir “Mechanistic study of the oxidation of 2 amino-3-cyano-4-naphtylthiophene by cyclic voltammetry and UV-Vis-NIR absorption spectroscopy” J. Electroanal. Chem., 2004, 562(2), 167.
  31. Murat Alanyalıoğlu, Ümit Demir and Curtis Shannon “Electrochemical formation of Se atomic layers on Au(111) surfaces: the role of adsorbed selenate and selenite” J Electroanal. Chem., 2004,561(1-2), 21.
  32. U. Çoruh, R. Ustabaş, F. Tümer, S. Garcia-Granda, Ü. Demir, D. Ekinci, M. Yavuz “2-amino 4-methylthiophene-3carbonitrile” Acta Crystallographica Section E-Structure Reports Online.2003, 59, 01339-01341.
  33. Tuba Öznülüer and Ümit Demir “Formation of Bi2S3 thin films on Au(111) by electrochemical atomic layer epitaxy: kinetics of structural changes in the initial monolayers” J. Electroanal. Chem., 2002, 529, 34.
  34. Duygu Ekinci, Ferhan Tümer, and Ümit Demir “Electrochemical Synthesis and Characterization of 2-amino-3-cyano-4-phenylthiophene dimmer and oligomers"2002,Europian Polymer Journal, 38, 1837.
  35. Igor Nicic, Jie Liang, Vince Cammarata, Murat Alanyalioglu, Umit Demir and Curtis Shannon “Underpotential Deposition of Te Monolayers on Au Surfaces from Perchloric Acid Solution Studied by Chronocoulometry and EQCM” J. Phys. Chem.B.2002, 106, 12247.
  36. Hilal Çakal, Murat Alanyalıoğlu, A. Emin Öztürk and Ümit Demir “Electrochemical studies of the effects of pH and the surface structure of Gold substrates on the underpotential deposition Sulfur”J. Phys. Chem. B, 2001, 105, 10588.
  37. Duygu Ekinci, Nurhan Horasan, Ramazan Altundaş and Ümit Demir “The electrochemical
    oxidation of 2-amino-3-cyano-4-phenylthiophene: evidence for a new class of photoluminescent material”, J. Electroanal. Chem., 2000, 484, 101.
  38. Anthony Gichuhi, B. Edward Boone, Umit Demir, and Curtis Shannon, "Electrochemistry of S adlayers at Underpotentially Deposited Cd on Au(111): Implications for the Electrosynthesis of High -Quality CdS Thin Films", J. Phys. Chem. B.,1998,102, 6499.
  39. Latif Kelebekli, Ümit Demir, and Yunus Kara, "Direct Synthesis of trans-1,4 diacetoxycyclohexa-2,5-diene by Electrochemical Reduction from (1,3/2,4)-1,4-diacetoxy 2,3-dibromo-5-cyclohexene", J. Chem. Research,1997,11, 402.
  40. Ümit Demir and Curtis Shannon, “Reconstruction of cadmium sulfide monolayers on Au(100)” Langmuir, 1996, 12, 594.
  41. Umit Demir and Curtis Shannon, "Electrochemistry of Cd at 3x3R30o-S/Au(111): Kinetics of Structural Changes in CdS Monolayers", Langmuir, 1996, 12, 6091.
  42. Umit Demir, K. K. Balasubramanian, Vince Cammarata and Curtis Shannon, "Scanning Probe Lithography of Novel Langmuir-Schaefer Films: Electrochemical Applications", J.Vac. Sci.Technol.,1995,13, 1294.
  43. Umit Demir and Curtis Shannon, "A Scanning Tunneling Microscopy Study of Electrochemically Grown Cadmium Sulfide Monolayers on Au(111)", Langmuir,1994,10, 2794.
  44. Arif Dastan, Ümit Demir and Metin Balci, "Functionalization of Benzonorbornadiene: High-Temperature Bromination and Electrochemical Oxidation", J. Org. Chem., 1994, 59, 6534.
  45. Fatih Köleli and Ümit Demir, "The Anodic Oxidation and ESR-Spectroscopic
    Studies of1,2-Di-methylindole" Doga-Tr. J. Chemistry, 1992, 16, 210.