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All Journal Journal of Applied Agricultural Science and Technology Science, Technology, and Communication Journal
Yudani, Ananda Febri
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Agriculture, Biological Sciences & Forestry Computer Science & IT Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology

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Fourier transform infrared analysis of orange peel ferroelectric material with BaTiO3 precursor Dewi, Rahmi; Hamzah, Yanuar; Manurung, Romarito Gesi; Sihombing, Ropina Emwarjati; Rahmi, Lailatul; Alamin, Rahmatan Lil; Yoga, Figo Swarna; Salsabila, Sonia; Yudani, Ananda Febri
Science, Technology, and Communication Journal Vol. 5 No. 1 (2024): SINTECHCOM Journal (October 2024)
Publisher : Lembaga Studi Pendidikan dan Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v5i1.270

Abstract

This study explores the potential of orange peel extract as a stabilizing agent in the synthesis of ferroelectric BaTiO3. Characterization using Fourier transform infrared (FTIR) spectroscopy revealed the presence of strong acidic functional groups (O-H stretching at 3300 cm-1 and C–H sp3 chain at 2800 – 2993 cm-1 and carbonyl groups of double C–O at 1650 cm-1 in orange peel extract. These findings indicate that orange peel contains organic compounds that can be utilized in various applications.
Detection of Malathion in Ipomoea aquatica Using a Plasmonic Sensor Based on Ag-Modified Gold Nanobipyramids Iwantono, Iwantono; Morsin, Marlia; Yudani, Ananda Febri; Syajali, Hidayati; Ziliwu, Friska; Simbolon, Norsinta Ida; Nafisah, Suratun; Isda, Mayta Novaliza; Emrinaldi, Tengku
Journal of Applied Agricultural Science and Technology Vol. 9 No. 1 (2025): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v9i1.369

Abstract

Malathion is an organophosphate pesticide commonly used in agriculture to protect various crops, including Ipomea aquatica. I. aquatica is a widely consumed vegetable that is vulnerable to pests, such as caterpillars, which damage its leaves. Malathion is an insecticide effective against caterpillars on Ipomoea aquatica without affecting its internal tissues. However, excessive use of this pesticide may leave residues that pose risks to the environment and human health. This study aims to develop a plasmonic sensor based on silver-modified gold nanobipyramids (Ag-GNBPs) for malathion detection. This plasmonic sensor employs anisotropic gold nanomaterials, specifically silver-coated gold nanobipyramids, to enhance localized surface plasmon resonance (LSPR) and improve detection sensitivity. Silver is used due to its high electrical conductivity and responsiveness to electrical and light stimuli. Ag-GNBPs were synthesized using the seed-mediated growth method, and their optical, structural, and morphological properties were characterized via UV-Vis spectroscopy, XRD, and FESEM. The UV-Vis absorption spectrum exhibited transverse (T-SPR) and longitudinal (L-SPR) surface plasmon resonance peaks at 500-600 nm and 700-900 nm, respectively. Testing involved adding the analyte to the solution and analyzing LSPR spectrum changes via UV-Vis spectroscopy. The observed LSPR peak shifts correlated with malathion concentration, with enhanced sensitivity due to silver modification. The results demonstrated that the plasmonic sensor based on silver-modified gold nanobipyramids not only detected malathion with high accuracy but also exhibited high sensitivity at low concentrations, which is essential for environmental monitoring and food safety applications. The optimal growth time for the seed-mediated growth method was 2 hours.
Co-Authors Alamin, Rahmatan Lil Iwantono Iwan Barnawi Lailatul Rahmi Manurung, Romarito Gesi Mayta Novaliza Isda Morsin, Marlia Rahmi Dewi Salsabila, Sonia Sihombing, Ropina Emwarjati Simbolon, Norsinta Ida Suratun Nafisah Syajali, Hidayati Tengku Emrinaldi Yanuar Hamzah Yoga, Figo Swarna Ziliwu, Friska