Nur Farahiyah Mohammad
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Preferred name
Nur Farahiyah Mohammad
Official Name
Nur Farahiyah, Mohammad
Alternative Name
Mohammad, N. F.
Nur Farahiyah, Mohammad
Mohammad, N.
Main Affiliation
Scopus Author ID
36872346600
Researcher ID
X-6539-2019

Research Output
Now showing 1 - 3 of 3
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Publication

Synthesizing and Optimization the Hydroxyapatite Based on Corbiculacea Seashells

2021-01-01 , Mohd Riza Mohd Roslan , Nashrul Fazli Mohd Nasir , Nur Farahiyah Mohammad , Cheng Ee Meng , Nasrul Amri Mohd Amin , Abdul Khalid M.F. , Mohd Zakimi Zakaria , Muhammad Mokhzaini Azizan , Muzammil Jusoh

Hydroxyapatite (HA) is one of the main components in bone which functions to enhance its cell regeneration. Synthetically produced HA, based on seashell resources has higher biocompatibility, and in high demand especially in bone tissue engineering. However, the secondary phase of HA production are calcium oxide and carbonate, which impedes its performance. HA is synthesized via wet chemical precipitation and optimization were done to obtain nearly pure HA by manipulating the pH value and sintering temperature. It is expected that the combination of these parameters will optimize the amount of secondary phase hence attained nearly stoichiometric or pure HA. HA powders were analyzed through Fourier Transform Infrared Spectroscopy (FTIR) and Energy Dispersive X-ray Spectrometry (EDX).

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Nano Hydroxyapatite (Nano-HA) based on pholas orientalis shells and degradation analysis

2023-04 , Mohd Riza Mohd Roslan , Nashrul Fazli Mohd Nasir , Nur Farahiyah Mohammad , Farah Diana Mohd Daud , Cheng Ee Meng , Beh Chong You

Millions of tons of seashells are produced every day as waste around the world. These underutilized seashells waste was executed as calcium precursor by researcher to synthesis the nano-hydroxyapatite (nano-HA). Nano-HA was successfully synthesised from Pholas Orientalis seashells waste via the chemical precipitation method. Different sintering temperatures were implemented to evaluate the physicochemical criteria of nano-HA. The obtained powders were examined by various physicochemical methods such as XRD, FTIR, FESEM, EDX and degradation analysis. The peaks in XRD and FTIR analysis the HA is successfully produced. The FESEM images on the other hand showing the HA particle in nano size range with rice-like structure. Meanwhile, a variation of Ca/P ratio can be observed in respect to sintering temperatures. The Ca/P ratio for HA-WS, HA-S500 and HA-S700 sample is 1.78, 2.03 and 1.57 respectively. Different sintering temperatures result in different crystallinity value which consequently affects its degradation profile.

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Malaysian seashells based Hydroxyapatite for biomedical application

2023 , Nur Farahiyah Mohammad , Mohd Riza Mohd Roslan , Nashrul Fazli Mohd Nasir

Hydroxyapatite (HA, Ca10 (PO 4 ) 6 (OH) 2 ) is widely used in dentistry and orthopaedics as a bone substitute or replacement material. The material is chemically and crystallographically identical to the mineral component of human biological bone. Natural materials such as animal bones, clay, eggshells, corals, and seashells can be used as a main source of calcium precursor to synthesise HA. Using Malaysian shell waste materials is sustainable and economical. Thus, these advantages have attract researchers to explore potential products from shell trash. This chapter presents the synthesis method and characterisation of hydroxyapatite synthesised from several Malaysian local seashells such as Paphia textile (lala), Corbiculacea (etok), and Polymesoda expansa (lokan) shells.

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