Morphology-dependent electrocatalytic performance of Fe 2 (MoO 4 ) 3 for electro-oxidation of methanol in alkaline medium
作者： Daoming Zhang , Liheng Zhang , Wei Zhang , Mengfei Huo , Jiajia Yin
DOI: 10.1016/J.JMAT.2017.03.002
关键词:
摘要: Abstract Electrochemically synthesized nanosphere, nanorod and nanotube Fe2(MoO4)3 at optimized temperature current density are characterized with XRD, SEM, TEM, XPS. Crystal lattices of the three types Fe2(MoO4)3 detected by HRTEM well matched simulation analysis results from Materials Studio 6.0 based on inorganic crystal structure database (ICSD) data modified XRD lattice parameters. The ratios Fe/Mo surface resulted XPS 1.47, 1.63 2.22 respectively for nanotube. mixture polytetrafluoroethylene dispersion coated glass carbon substrate as electrode electrocatalytic performance test cyclic voltammetries in 0.1 mol/L KOH 1 mol/L methanol electrolyte. Methanol oxidation peak Nanotube- Fe2(MoO4)3/GCEs is 3.27 mA/cm2 higher than 2.8 mA/cm2 platinum foil electrode, which shows enhanced catalytic activity Nanotube-Fe2(MoO4)3/GCEs. stability terms retention 91%, 92% 88% Nanosphere-Fe2(MoO4)3/GCE, Nanorod-Fe2(MoO4)3/GCE Nanotube-Fe2(MoO4)3/GCE after 220 cycles. It concluded that nanosized could be promising alternative non-noble electro-catalysts electro-oxidation alkaline medium.
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