CD Skripsi

Green Sintesis Nanopartikel Seng Oksida (Zno) Menggunakan Ekstrak Daun Sirih (Piper Betle L) Segar Sebagai Agen Antibakteri

---

In this study, ZnO nanoparticles were synthesized in an environmentally friendly manner at various pH levels (6, 8, 10, and 12) using fresh betel leaf extract. The effect of pH on optical properties was analyzed using a UV-Vis spectrophotometer. Meanwhile, structural and morphological properties were characterized using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). FTIR characterization was performed to determine functional groups. Additionally, antimicrobial tests were conducted against Escherichia coli and Staphylococcus aureus. The pH value during synthesis significantly influenced optical properties, such as absorbance in the wavelength range of 350–370 nm and band gap energy, which varied between 2.86–3.25 eV. XRD characterization confirmed that the ZnO nanoparticles had an average size of 33.77 nm with a hexagonal wurtzite structure and lattice parameters of a = b = 2.859 nm and c = 5.203 nm. The morphology of the ZnO nanoparticles was spherical and hexagonal. The functional groups in fresh betel leaf extract successfully acted as a reducing agent for ZnO nanoparticle synthesis, as indicated by a peak at 474 cm⁻¹, corresponding to ZnO nanoparticle stretching vibrations. ZnO nanoparticles exhibited the highest inhibition zones of 7.96 mm against E. coli and 6.3 mm against S. aureus after 24 hours. Therefore, environmentally friendly ZnO nanoparticles have great potential as antibacterial agents. The innovation of ZnO nanoparticle synthesis using betel leaf extract not only highlights the diversity of natural reducing agents but also holds promise for antibacterial applications.

---

Ketersediaan

Informasi Detail

Judul Seri

-

No. Panggil

2103110717

Penerbit

Pekanbaru : Universitas Riau FMIPA Fisika., 2025

Deskripsi Fisik

-

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

2103110717

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

FISIKA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

Mutia

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar