“…The X-ray diffraction (XRD) pattern in Figure 14 displays the crystallographic planes (100), ( 002), ( 101), ( 102), ( 110), ( 103), ( 200), ( 112), ( 201), (004), and (202) at θ values of 31.76 0 , 34.44 0 , 36.24 0 , 47.56 0 , 56.66 0 , 62.90 0 , 66.42 0 , 67.96 0 , 69.14 0 , 72.64 0 , and 76.98 0 , respectively, which matches with the JCPDS card number 01-089-1397 [20,34,35] The presence of sharp and narrow peaks indicates that the ZnO NPs are highly crystalline. Furthermore, the sample exhibits a single-phase Wurtzite structure, which is a hexagonal closepacked crystal structure commonly observed in ZnO [25].…”