(For USM Staff/Student Only)

EngLib USM > Ω School of Chemical Engineering >

Biosynthesis of silver nanoparticles using plant extract of colubrina asiatica and its characterization

Biosynthesis of silver nanoparticles using plant extract of colubrina asiatica and its characterization / Nor Ezaney Ibrahim
Bio-sintesis zarah-zarah nano perak menggunakan ekstrak tumbuhan (ET) telah mendapat sambutan yang banyak pada kebelakangan ini, umumnya disebabkan keberadaannya yang berterusan dan pelbagai kehadiran komponen metabolit penurun. Melalui kajian ini, kami telah mengkaji kemampuan menurun ekstrak berair ET Colubrina asiatica dalam menghasilkan zarah-zarah nano perak. Penghasilan optimum zarah-zarah nano telah dikaji menggunakan analisis UV-Vis, Mikroskop Electron Pancaran (MEP), Spektroskopi Infrared Transformasi Fourier (SITF) dan Penyerakan Cahaya Dinamik (PCD). Pelbagai parameter yang mempengaruhi penghasilan zarah-zarah nano perak telah dikaji seperti kepekatan ET, kepekatan nitrat perak, nisbah ET kepada nisbah nitrat perak serta tempoh pengeraman. Ekstrak tumbuhan ini mampu menurunkan ion-ion perak kepada zarah-zarah nano perak dalam masa 24 jam, dibuktikan dengan perubahan warna larutan daripada kuning pucat kepada coklat kekuningan. Analisis UV-Vis menunjukkan ciri-ciri puncak permukaan resonan plasma (PRP) pada panjang gelombang 445 nm. Mikroskop Elektron Pancaran (MEP) mengesahkan bentuk sfera pada zarah-zarah nano tersebut. Spektra STIF membuktikan wujud pelbagai kumpulan berfungsi biomolekul yang memerangkap zarah-zarah nano. Purata saiz bagi zarah-zarah nano ialah 97 nm seperti yang dibuktikan oleh PCD. Kajian ini mempersembahkan siasatan terperinci tentang sifat berlainan ekstrak tumbuhan dan nitrat perak untuk menghasilkan zarah-zarah nano yang stabil secara biologi. _______________________________________________________________________________________________________ Biosynthesis of silver nanoparticles (AgNPs) using plant extract (PE) has gained great interest recently, mainly due to their tremendous availability and various arrays of reducing metabolites. In this study, we investigated the reduction ability of aqueous extract of Colubrina asiatica in order to synthesize AgNPs. Optimal synthesis of AgNPs was investigated using UV-Visible Spectroscopy, Transmission Electron Microscopy (TEM), Fourier Transform Infrared (FTIR) and Dynamic Light Scattering (DLS). Different parameters which include concentration of PE solution, concentration of silver nitrate (AgNO3), ratio of PE to the AgNO3 solution and incubation period that affect the synthesis of AgNPs was investigated. Colubrina asiatica can reduces silver ions to silver nanoparticles within 24 hr as indicated by the color changes from pale yellow to yellowish brown. The UV-Vis spectrum of AgNPs revealed a characteristic Surface Plasmon Resonance (SPR) peak at 445 nm. Transmission electron microscope (TEM) confirmed the spherical nature and the crystallinity of nanoparticles. Fourier Transform Infrared (FTIR) spectra
Contributor(s):
Nor Ezaney Ibrahim - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875007293
Barcode : 00003107173
Language:
English
Subject Keywords:
silver nanoparticles; plant extract; reducing metabolites
First presented to the public:
6/1/2017
Original Publication Date:
4/24/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 61
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-04-24 17:33:17.976
Date Last Updated
2020-04-26 11:20:49.895
Submitter:
Mohd Jasnizam Mohd Salleh

All Versions

Thumbnail Name Version Created Date
Biosynthesis of silver nanoparticles using plant extract of colubrina asiatica and its characterization1 2018-04-24 17:33:17.976