CD Skripsi
Aplikasi Nanobipiramida Emas Yang Dimodifikasi Dengan Tembaga (Cu) Untuk Deteksi Malathion Pada Tanaman Kangkung (Ipomoea Aquatica)
Pesticides, particularly malathion, on organophosphate-based insecticides, is commonly used in the agricultural sector to control pests on food crops. However, the use of these harmful chemicals can pose risks to human health. This study aims to detect malathion pesticide residues on water spinach using sensor materials in the form of gold nanobipyramids (GNBP) and GNBP modified with copper (Cu-GNBP). The method used is the Seed Mediated Growth Method (SMGM), where nanoparticle growth is mediated by platinum (Pt) for GNBP and copper for Cu-GNBP. The characterization of the synthesized materials was carried out using UV-Vis spectroscopy, XRD, and FESEM. The UV-Vis results show two peaks for GNBP, at wavelengths of 583 nm (t-SPR peak) and 904 nm (l-SPR peak), while Cu-GNBP shows the highest intensity peaks at wavelengths of 577 nm (t-SPR peak) and 784 nm (l-SPR peak). The XRD pattern shows two peaks at 2θ angles of 38.3° and 44.5°. FESEM images show the nanobipyramid shape of the gold nanoparticles. Plasmonic sensor testing indicates that both GNBP and Cu-GNBP have high sensitivity, repeatability, and stability in detecting malathion residues on water spinach, making them promising sensor materials.
Keywords: Copper, Malathion, Gold Nanobipyramids, Ipomoea Aquatica.
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