“…The properties of ZnO are widely attributed to its particle size, the amount of the grains and grain boundaries (Aimable, Goure Doubi, Stuer, Zhao, & Bowen, 2017;QIN, SHAO, LIU, & WANG, 2005) and also the concentration of defects (B. Chen, Xia, & Lu, 2013;Lott et al, 2015) Thus, electrical and optical properties of ZnO have been improved by maintaining its nanometer-scale microstructure (Lee et al, 2016). The interest in nanostructured materials is growing due to the gain in several properties, such as optical, mechanical and catalytic, among others (Aimable et al, 2017;Phuah, Rheinheimer, Akriti, Dou, & Wang, 2021;Samavati et al, 2021).…”