“…ZTO has promising applications in photovoltaic devices, combustible gases and humidity detection, photo-electrochemistry, functional coatings, and transparent conducting electrodes owing to its good electron mobility, highelectrical conductivity, and low visible absorption [8][9][10][11][12][13]. Recently, such potential applications as electrode material for Li-ion batteries and dye-sensitized solar cells (DSSCs) have been demonstrated [12,[14][15][16]. In the literatures, ZTO has been prepared via thermal evaporation [7], high-temperature calcinations [17,18], sol-gel synthesis [10], ball-milling [19], chemical vapor deposition [20], radio frequency magnetron sputtering [13,21], hydrothermal reaction [12,[22][23][24] and thermal plasma [25].…”