Sains Malaysiana 48(9)(2019): 1913–1918

http://dx.doi.org/10.17576/jsm-2019-4809-12

Penghasilan Zarah Nano Ferum Oksida (FeNPs) daripada Garam Ferosenium menggunakan Hidrogel Poli-Akril Amida (P(Am) sebagai Templat

(Preparation of Ferum Oxide Nanoparticles (FeNPs) from Ferocenium Salt using Polyacrylamide (P(Am) as Template)

MELLISSA ANDARINI¹, MARYAM MOKHTAROM¹, BOHARI M. YAMIN¹, M. CAIRUL IQBAL M. AMIN² & AZWAN MAT LAZIM¹*

¹Pusat Bahan Termaju & Sumber Keterbaharuan, Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia

²Pusat Penyelidikan Fakulti Farmasi, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Wilayah Persekutuan, Malaysia

Diserahkan: 1 Januari 2019/Diterima: 18 Julai 2019

ABSTRAK

Kajian ini adalah bertujuan mengkaji potensi hidrogel sebagai templat nanoreaktor bagi menghasilkan zarah nano ferum oksida (FeNps). Hidrogel Poli-AkrilAmida (PAAm) telah dihasilkan dengan menggunakan kaedah pempolimeran radikal bebas. Keupayaan penyerapan air dalam hidrogel telah diuji dan nisbah pembengkakan tertinggi telah berlaku pada larutan penimbal pH10. Hidrogel yang terhasil telah dicirikan dengan menggunakan pengimbas mikroskop elektron (SEM) diikuti dengan spektroskopi serakan tenaga X-ray (SEM-EDEX) untuk menentukan jumlah peratusan ferum (Fe). Selepas proses pengkalsinan, zarah nano diekstrak daripada hidrogel PAAm dan seterusnya dianalisis menggunakan mikroskop transmisi elektron (TEM) dan analisis pembelauan sinar-X (XRD). Hasil TEM telah menunjukkan bahawa saiz zarah yang dihasilkan adalah antara 5 - 20 nm. Analisis XRD pula mengesahkan kehadiran zarah ferum oksida (Fe2O3). Keputusan ini menunjukkan bahawa hidrogel berpotensi digunakan sebagai nanoreaktor bagi menghasilkan zarah nano.

Kata kunci: Ferosenium; hidrogel poli-akril amida (PAAm); nanoreaktor; pengkalsinan; zarah nano ferum oksida (FeNps)

ABSTRACT

The aim of this study was to investigate the feasibility of hydrogel to produce ferum oxide nanoparticles (FeNps). The polyacrylamide (PAAm) hydrogel was synthesized by using free radical polymerization method. The hydrogel water uptake ability has been conducted and the highest swelling ratio was occured at pH10 basic buffer solution. Hydrogel was characterized by using scanning electron microscopy (SEM) followed by energy dispersive X-ray spectroscopy (SEM-EDEX) to determine the iron (Fe) percentage. After calcination process, nanoparticles were extracted from the PAAm hydrogel and further analysed using transmission electron microscopy (TEM) and X-ray diffraction analysis (XRD). TEM results showed that the particles diameter was in ranged of 5 - 20 nm. XRD examination confirmed the existance of ferum oxide particles (Fe2O3). The result demonstrates the feasibility of using hydrogel as a promising nanoreactor.

Keywords: Calcination; feroccenium; ferum oxide nanoparticles (FeNps); nanoreactor; polyacrylamide (PAAm) hydrogel

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*Pengarang untuk surat-menyurat: azwanlazim@ukm.edu.my