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Title:Tungsten carbide thin films for electrochemical water splitting studies
Authors:ID European Nanoscience and Nanotechnology Association (Copyright holder)
ID Emin, Saim, Materials Research Laboratory, University of Nova Gorica (Author)
ID Altinkaya, Cesur, 2Faculty of Engineering, Yildirim Beyazit University, Ankara, Turkey (Author)
ID Semerci, Ali, 2Faculty of Engineering, Yildirim Beyazit University, Ankara, Turkey (Author)
ID Valant, Matjaž, Materials Research Laboratory, University of Nova Gorica (Author)
ID Okuyucu, Hasan, 2Faculty of Engineering, Yildirim Beyazit University, Ankara, Turkey (Author)
ID Yildiz, Abdullah, 2Faculty of Engineering, Yildirim Beyazit University, Ankara, Turkey (Author)
Files: This document has no files that are freely available to the public. This document may have a physical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Not categorized
Typology:1.12 - Published Scientific Conference Contribution Abstract
Organization:UNG - University of Nova Gorica
Abstract:We used wet-chemistry techniques to prepare colloidal tungsten (W) nanoparticles (NPs). The synthesis of W NPs was conducted using the so called hot-matrix method in 1-octadecene [1]. The sizes of obtained W NPs are in the order of 2 - 5 nm. These W NPs are coated with hydrophobic molecules which allow their dispersion in organic solvents like choloroform (CHCl3). It was found that the colloidal stability of the dispersions is exceptionally high exceeding several years. The stability of W NPs which prevents coagulation allows the preparation of thin films with uniform thicknesses by spin-coating, inkjet-printing and spray coating. We have prepared tungsten carbide (W2C, WC) thin films. The preparation of W2C and WC was achieved by spin-coating of pre-synthesized W NPs on graphite substrate and following heat treatment under Ar atmosphere at 1000 and 1450°C. The obtained W2C and WC films were used both in electrochemical water splitting studies. We also made a composite W2C-Pt films where we used only 5 at.% of Pt. The W2C-Pt composite has shown similar performance as pure Pt-C for hydrogen (H2) evolution. In conclusion, we have developed a procedure for the synthesis of W NPs which can be applied for the preparation of tungsten carbides films and their use for electrochemical water splitting.
Keywords:water splitting, nanoparticles, hot-matrix
Publication status:Published
Year of publishing:2017
Number of pages:136
PID:20.500.12556/RUNG-3302-3e64237a-fb06-4f25-fc31-7e1225dc6ba0 New window
COBISS.SI-ID:4927483 New window
NUK URN:URN:SI:UNG:REP:FRTFOKEM
Publication date in RUNG:09.10.2017
Views:6191
Downloads:0
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Record is a part of a monograph

Title:International Conference on Functional Nanomaterials and Nanodevices
Editors:Saim Emin
Place of publishing:Sofia, Bulgaria
Publisher:Veles
Year of publishing:2017
Conference organizer:Saim Emin / European Nanoscience and Nanotechnology Association

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