Growth and properties of Ag-doped ZnO nanoflowers for highly sensitive phenyl hydrazine chemical sensor application

► Facile synthesis of Ag-doped ZnO nanoflowers. ► Morphological, structural and optical characterizations. ► Fabrication of robust, highly sensitive, reliable and reproducible phenyl hydrazine chemical sensor. ► High sensitivity (∼557.108 ± 0.012 mA cm−2 (mol L−1))−1 and low detection limit (∼5 nM) for the fabricated chemical sensor.