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This research aims to synthesize and characterize silicon dioxide from sediment sourced from the Madura Strait.

May 15, 2026Eclética Química0 citationsOpen Access

Synthesis and characterization of SiO2 from Madura Strait sediment with leaching acid treatment

AHArif HidayatState University of Malang AWAnugrah Ricky WijayaState University of Malang IKIrma Kartika KusumaningrumState University of Malang

Key Points

This research aims to synthesize and characterize silicon dioxide from sediment sourced from the Madura Strait.
Conducted wet digestion using a strong acid for sample decomposition.
Utilized calcination and further purification with strong acid to remove impurities.
Characterized the synthesized SiO₂ using XRF, XRD, FTIR, and SEM techniques.
Silicon content in the raw sediment increased from 33.5% to 83.3%.
XRD confirmed the formation of amorphous SiO₂ particles.
FTIR spectra showed Si–O–Si and Si–OH functional groups indicative of silanol and siloxane.

Abstract

Silicon dioxide (SiO₂) was successfully synthesized from Madura Strait sediment. The production process involved a wet digestion step using a strong acid to decompose the sample. Subsequent calcination and purification with strong acid effectively removed impurities, yielding a white sedimentary material. The synthesized SiO₂ was characterized using X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). After impurity removal, the silicon content in the raw sediment increased from 33.5% to 83.3%. XRD analysis confirmed the successful formation of amorphous SiO₂ particles. FTIR spectra indicated the presence of Si–O–Si and Si–OH functional groups, representing silanol and siloxane structures. SEM analysis revealed that the SiO₂ particles formed aggregates with an irregular arrangement, where individual particles appeared loosely associated.

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