Synthesis of Carbon-Nanomaterial from Rice Husk and Its Application as Adsorbent in Pesticide Residues Analysis

Year 2025, Volume: 9 Issue: 1, 56 - 68, 24.06.2025

Oluwatosin Kayode Ogunbolude , Olatundun Funke Oyekanmi , Femi Timothy Olatunji , Christy Fumilayo Idowu , Abimbola Emily Aremu

https://doi.org/10.32571/ijct.1589832

Abstract

This study explores how rice husk, an abundant agricultural by-product, can be transformed into high-performance carbon nanomaterials with exceptional adsorption properties. The findings emphasize the potential of using sustainable and cost-effective resources to develop innovative materials for environmental and analytical applications. The synthesized carbon nano-structure was characterized using XRD, SEM, EDX, and FTIR. Notably, FTIR analysis revealed peaks at 1580.4 cm−1, 1597.79 cm−1, and 1456.38 cm−1, indicating C=C stretching and suggesting alkene or aromatic functional groups. EDX analysis showed varying weight percentages of carbon, oxygen, and sulfur for 30 g, 40 g, and 50 g samples. The rice husk-derived carbon nanomaterials were evaluated in the QuEChERS technique for extracting dichlorvos and bifenthrin from bean samples. The results showed that the sorbent properties were comparable to those of conventional PSA and C18, with high recovery rates for the investigated pesticides. This demonstrates efficient binding and removal of contaminants. The findings highlight the potential of using sustainable, cost-effective resources to develop innovative materials for environmental and analytical applications. Overall, this eco-friendly approach combines minimal environmental impact with high analytical performance, offering a promising alternative to traditional sorbents in sample preparation.

Keywords

Carbon-nanomaterial , rice husk waste , pesticides residues , QuEChERS , rice husk waste , XRD , SEM , EDX , FTIR

Project Number

i589832

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