Green Synthesis and Characterization of Ag/ZnO Nanocomposites Mediated by Phyllanthus acidus Leaf Extract

Mega Silvia Dewi; Noor Hindryawati; Subur P. Pasaribu

doi:10.55927/mudima.v6i3.12

Authors

Mega Silvia Dewi Mulawarman University
Noor Hindryawati Mulawarman University
Subur P. Pasaribu Mulawarman University

DOI:

https://doi.org/10.55927/mudima.v6i3.12

Keywords:

Ceremai, Ag/ZnO Nanocomposites and Characterization

Abstract

Ceremai leaf extract contains flavonoid and phenolic compounds that can function as reducing and capping agents. The purpose of this study was to determine the characteristics of Ag/ZnO nanocomposites synthesized with ceremai leaf extract. Ceremai leaf extract functions as a natural reducing agent. Ag/ZnO nanocomposites were made by first synthesizing silver nanoparticles, adding Zn(CH3CO2)2 and NaOH until the mixture's pH reached 12. During the synthesis process, a magnetic stirrer was used to accelerate homogenization. After that, the Ag/ZnO nanocomposites were washed until the pH was neutral, then oven-dried and calcined. The resulting Ag/ZnO nanocomposite was characterized using UV-Vis Spectrophotometer, PSA, TEM, and XRD, yielding results showing that the Ag/ZnO nanocomposite was formed at λmax (nm) 370–385 nm and was stable for 6 days. The particle size distribution was bimodal, with the dominant sizes at 150, 8 nm and 671.2 nm. The morphology of ZnO as a matrix was blunt triangular and tended to be less uniform with irregular silver nanoparticles that tended to agglomerate distributed on the ZnO surface. Based on the results of the image J software, the majority of the ZnO particle size distribution was in the range of 116.52–134.87 nm. The average effective diameter ± standard deviation of ZnO is 145.45 ± 25.95, and the majority of the silver nanoparticle size distribution is in the range of 3.58–8.41 nm. The average effective diameter ± standard deviation of silver nanoparticles is 7.25 ± 3.73. ZnO has a hexagonal wurtzite structure and Ag has a face-centered cubic (FCC) structure, so ZnO is the main matrix and Ag is dispersed as nanoparticles on the surface of ZnO

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