Single Step In Situ Synthesis and Optical Properties of Polyaniline/ZnO Nanocomposites

Table 2

Band gap energy of ZnO nanoparticles and PANI/ZnO nanocomposites.

Sample	Morphology of ZnO nps	Size (avg. Dia nm) or length (nm) 𝑑TEM, ZnO nps	Band gap energy of ZnO nps (eV)	Band gap energy of PANI/ZnO nanocomposite (eV)
PANI	—	—	—	3.26
PANI/60% ZnO-SF-MW	Spherical	10–15 nm	3.61	3.21
PANI/60% ZnO-SLS-MW	Nanorods	𝐿=90 nm	3.48	3.09
PANI/40% ZnO-SLS-UP	Nanoflowers	Dia = 12–15 nm, 𝐿=120 nm	3.61	2.94
PANI/60% ZnO-SLS-UV	Nanoplates	Dia = 20 nm, 𝐿=150 nm	3.48	1.59
PANI/40% ZnO-SLS-RT	Nanoneedles	Dia = 10–12 nm, 𝐿=120 nm	3.48	1.50