DOI: https://doi.org/10.14710/gjec.2023.21071

Sintesis dan Karakterisasi Hidroksiapatit dengan Metode Sol-Gel Sebagai Bahan Dasar Adsorben

*Tri Windarti  -  Department of Chemistry Universitas Diponegoro, Indonesia
Amalia Salsabila Setiadi  -  Department of Chemistry Universitas Diponegoro, Indonesia
Fadila Fibriani  -  Department of Chemistry Universitas Diponegoro, Indonesia
Ibrahim Mul Abdul Azis  -  Department of Chemistry Universitas Diponegoro, Indonesia
Syaira Adelia Putri  -  Department of Chemistry Universitas Diponegoro, Indonesia
Open Access Copyright 2024 Greensphere: Journal of Environmental Chemistry

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Abstract

Adsorben berbasis hidroksiapatit (HA, Ca10(PO4)6(OH)2) mulai dikembangkan, khususnya untuk menyerap logam berat karena strukturnya memungkinkan terjadinya pertukaran ion. Pada penelitian ini HA disintesis dengan metode sol-gel menggunakan Ca(NO3).4H2O dan KH2PO4 sebagai prekursor kalsium dan fosfat. Karakterisasi dengan FTIR menunjukkan adanya puncak-puncak vibrasi yang spesifik gugus fosfat (PO43-) dan hidroksil (-OH) milik HA. Difaktogram XRD menunjukkan hasil sintesis merupakan HA murni dengan kristalinitas tinggi. Analisi morfologi dengan SEM memperlihatkan partikel HA memiliki bentuk tidak beraturan dan ukurannya beragam (<1 μm sampai >10 μm). Ruang antar partikel yang luas menyebabkan HA memiliki peluang untuk digunakan sebagai adsorben.

 

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Keywords: Hidroksiapatit, sol-gel, adsorben.

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