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  • Title: The sonochemical synthesis and characterization of Cu(1-x)Ni(x)WO4 nanoparticles/nanorods and their application in electrocatalytic hydrogen evolution.
    Author: Selvan RK, Gedanken A.
    Journal: Nanotechnology; 2009 Mar 11; 20(10):105602. PubMed ID: 19417522.
    Abstract:
    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).
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