Morphological characteristics of silica nanoparticles derived from rice husk for expected agricultural application

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

Abstract

The study aimed to apply biosilica nanoparticles from renewable resources for improving soil quality as a type of fertilizer carier. The silica particles having a purity of about 98 % were extracted from rice husk at the calcination temperatures of 550 °C, 600 °C, 650 °C, and 700 °C. The required materials properties were investigated by advanced measurement techniques. All samples showed the amorphous structure with Si–O–Si bond and the particles’ agglomeration with the average size of 10–50 nm and principle electronic structures with the typical spectra of Si and O2. When the synthesized silica was used as the medium to release absorbed nutrients in a controlled manner, surface properties, including the Brunauer–Emmett–Teller area and the average pore diameter were evaluated between 179 m2/g to 570 m2/g, and 4 nm–40 nm, respectively. The measured electrokinetic potential of the synthesized particles was between −20 mV and −36 mV guaranteeing the stability when they are dispersed in the aqueous environment. The experimental results showed that the silica particles calcinated at 650 °C had the best properties.

Details

Original languageEnglish
Number of pages9
JournalCeramics international
Volume50
Issue number21
Publication statusPublished - 1 Aug 2024
Peer-reviewedYes

External IDs

ORCID /0000-0003-0675-6688/work/165061462

Keywords

Sustainable Development Goals