The sonochemical synthesis and characterization of Cu(1-x)Ni(x)WO4 nanoparticles/nanorods and their application in electrocatalytic hydrogen evolution.
Cu(1-x)Ni(x)WO(4) (x = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0) nanoparticles/nanorods have been prepared by a novel sonochemical method using cetyltrimethylammonium bromide (CTAB) as the structure directing agent. The prepared materials have been characterized by thermogravimetric analysis (TGA), x-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), and BET specific surface area. The electrocatalytic activity towards the hydrogen evolution reaction (HER) has been studied for the Ni(2+)-substituted CuWO(4) nanoparticles by using linear sweep voltammogram measurements in a 1 M H(2)SO(4) solution. Cu(0.4)Ni(0.6)WO(4) (-473 mA cm(-2) at -1 V) shows a better catalytic activity than native CuWO(4) (-300 mA cm(-2) at -1 V).
Department of Chemistry and Kanbar Laboratory for Nanomaterials, Center for Advanced Materials and Nanotechnology, Bar-Ilan University, Ramat-Gan 52900, Israel.
Ramakrishnan Kalai
RK
Selvan
Aharon
A
Gedanken
D002384:Catalysis; D003460:Crystallization / Q000379:methods*; D004563:Electrochemistry / Q000379:methods*; D006859:Hydrogen / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010087:Oxides / Q000737:chemistry* / Q000528:radiation effects; D010316:Particle Size; D013010:Sonication; D013499:Surface Properties; D014414:Tungsten / Q000737:chemistry* / Q000528:radiation effects
D046911:Macromolecular Substances; D010087:Oxides; D006859:Hydrogen; C511604:tungsten oxide; D014414:Tungsten