“…Moreover, ZnO nanostructures can be classified into different types of dimensions from 0D to 3D leading to different applications such as photocatalytic activity, solar cells, anti-bacterial activities, supercapacitors, and chemical and biological sensors [19][20][21]. The ZnO has been synthesized in various methods including hydrothermal synthesis [22], electrochemical deposition [23], chemical vapor deposition [24,25], spray pyrolysis [26], radio-frequency magnetron sputtering [27], molecular beam epitaxy [28], pulsed laser deposition [29], arc discharge method [30], and sparking method [31].…”