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A feasibility of obtaining hybrid nanosystems consisting of copper, copper oxides, tetragonal or cubic oxide tungsten bronze (OTB) by means of electrodeposition from the polytungstate melts at 973 and 1023 K was studied. The formation regularities of various hybrid nanosystems were established based on a data of electrochemical techniques, X-ray diffraction phase analysis (XRD), and scanning electron microscopy (SEM). A Cu (mesh)/Cu 2 O/OTB hybrid system with catalase activity was obtained during electrodeposition from the K 2 WO 4 -Na 2 WO 4 (1: 1) -50 mol% WO 3 melt at 973 K.

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