“…Vanadium oxides and their related compounds have been extensively studied in recent years, because of their layered structure, novel chemical and physical properties, which make them possess a lot of broad applications, such as, cathode materials for reversible lithium batteries, catalysts, gas sensors, intelligent thermochromic windows, optical switching devices, optical or electrical modulators and so on [5][6][7][8][9][10][11]. As a new class of vanadium oxides, vanadium oxide hydrate (V 3 O 7 ·H 2 O) has attracted more and more attention and a lot of work has been devoted to study its magnetic, electrochemical and catalytic properties recently [12][13][14][15].…”