CD Skripsi

Pengaruh Tingkat Keasaman Terhadap Morfologi Dan Mikrostruktur Zno Yang Disintesis Menggunakan Metode Biosintesis

---

ABSTRACT
Selection of synthesis methods, precursors, concentrations and levels of acidity
can affect the shape, size and morphology of a prepared material. In this study, the
preparation of ZnO was carried out using the biosynthetic method with the
precursor solution of 0.05 M Zinc Nitrate Hexahydrate (Zn(NO3)2‧6H2O) and
mediated by pineapple peel extract in various the synthetic acidity level of pH 8,
9, 10, 11, and 12. The optical properties, morphology, crystal structure and
functional groups of ZnO samples were characterized using UV-Vis spectroscopy,
scanning electron microscopy (SEM), X-ray diffraction (XRD), and FT-IR
spectroscopy. The results of UV-Vis spectroscopy show that the optical
absorption peak of ZnO occurred in the wavelength range of 300-360 nm. The
highest and lowest bandgap energy are found to be 3.24 eV, and 3.17 eV for the
sample with pH 11 and 8, respectively. SEM micrographs have evidence that the
sample shape changes as the pH changes. The samples synthesized at the pH of 8,
9 have granular like shape and pH 10 have microspherical shape, while samples
synthesized in the pH of 11 and 12 have microflower shape. The XRD pattern
analysis results show that as the pH value increases, the diffraction intensity
increases with the highest diffraction peak occurs at an angle of 2θ = 36.25o that
belongs to the hkl crystal plane of (101). Meanwhile, the results of FT-IR
spectrum analysis show that the functional groups of O-H, C-N, C≡C, C = C, CH,
C-O involved in the synthesis process and the ZnO absorption peaks appeared
at wave number of 437.55 cm-1. The results of this study indicate that the acidity
level affects the physical properties of ZnO.
Key words: ZnO, biosynthesis, pineapple peel extract, acidity level (pH)

---

Ketersediaan

Informasi Detail

Judul Seri

-

No. Panggil

03 01. 121 (0030)

Penerbit

Pekanbaru : Universitas Riau – FMIPA – Fisika., 2021

Deskripsi Fisik

ix, 79 hlm.; ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

03 01. 121 (0030)

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

FISIKA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

ELFITRA

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar