Sintesis Hijau Nanopartikel TiO2 Menggunakan Ekstrak Daun Belimbing Wuluh (Averrhoa blimbi L.) dan Aktivitas Antibakterinya Terhadap Escherichia coli
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Nanopartikel TiO2 berhasil disintesis menggunakan metode sintesis hijau dengan memanfaatkan ekstrak daun belimbing wuluh (Averrhoa bilimbi L.) sebagai agen pereduksi dan penstabil (capping agent). Tujuan penelitian ini adalah mengetahui karakterisasi nanopartikel TiO2 dan aktivitas antibakterinya terhadap bakteri Gram negatif Escherichia coli. Karakterisasi nanopartikel TiO2 dilakukan menggunakan Fourier-Transform Infrared Specstroscopy (FTIR) dan X-Ray Power Diffraction (XRD). Nanopartikel TiO2 hasil sintesis memiliki fase anatase dengan ukuran rata-rata kristal yang diperoleh sebesar 12,9 nm dan kristalinitas sebesar 97,81%. Aktivitas antibakteri nanopartikel TiO2 diamati pada variasi Ti-BW20 dan Ti-BW40 terhadap bakteri Escherichia coli menghasilkan diameter zona hambat 7,82 mm dan 9,87 mm.
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Referensi
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