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Rohmatullaili
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Materials Science & Nanotechnology Physics

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ZnAl LDH-based Derivative Materials as Photocatalysts: Synthesis, Characterization, and Catalytic Performance in Tetracycline Degradation Rohmatullaili; Ahmad, Nur; Erviana, Desti; Zultriana; Savira, Dila; Mohadi, Risfidian; Lesbani, Aldes
Science and Technology Indonesia Vol. 9 No. 2 (2024): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.2.457-469

Abstract

Layered Double Hydroxide (LDH)-derived materials exhibited different characteristics from LDH precursors. The conversion of ZnAl LDH into its derivative material has been carried out to find the best catalyst for TC degradation. ZnAl (LDH)-based catalysts in this study have been effectively synthesized using coprecipitation, calcination, and restacking procedures. ZnAl Layered Double Oxide (LDO) is derived from the calcination of ZnAl LDH at 500°C. ZnAl LDH was also modified by adding Garcinia mangostana pericarp extract (GME). XRD, FT-IR, UV-DRS, and SEM-EDX were used to investigate the synthesized catalyst. ZnAl LDH exhibited the typical LDH FT-IR spectra, whereas ZnAl LDO showed metal oxide-like spectra, and the ZnAl-GME composite displayed the combination spectra of precursor material. The ZnAl LDH XRD diffraction pattern exhibited the attributes of a layered material, whereas the other three catalysts did not. Calcination destroyed the layered structure of ZnAl LDH, whereas the addition of GME to LDH and LDO generated a single-layered composite. The modified ZnAl-GME composite showed a decrease in both particle size and bandgap energy. At an ideal pH of 5, the synthesized catalyst was used in a batch system photodegradation of 5 mg/L Tetracycline (TC), employing solar light irradiation. ZnAl LDO holds the most significant catalytic activity and structural stability through the fifth regeneration cycle, degraded TC up to 100% in 90 minutes.
SYNTHESIS OF CaO/C NANOCATALYST AS PHOTOCATALYST IN METHYLENE BLUE DEGRADATION PROCESS USING UV LIGHT: SINTESIS NANOKATALIS CaO/C SEBAGAI FOTOKATALIS PADA PROSES DEGRADASI METILEN BIRU MENGGUNAKAN SINAR UV Rohmatullaili; Jefri; Devi, Ayu Aulia; Rodiah, Siti
SPIN JURNAL KIMIA & PENDIDIKAN KIMIA Vol. 6 No. 1 (2024): Januari - Juni 2024
Publisher : UIN Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/spin.v6i1.8546

Abstract

Fotodegradasi metilen biru telah dilakukan dengan bantuan sinar UV dan material CaO/C hasil sintesis. Material awal berupa CaO cangkang kerang mas dan serbuk kulit jengkol, yang dikalsinasi pada suhu 900oC sehingga diperoleh nanokatalis CaO/C. Hasil karakterisasi gugus fungsi dengan spektrofotometer FT-IR menunjukkan gabungan antara spektra CaO dan serbuk kulit jengkol murni. Proses fotodegradasi dilakukan dengan optimasi massa katalis, pengaruh sinar, dan waktu degradasi.  CaO/C menunjukkan massa optimum sebesar 50 g dalam larutan metilen biru 25 ppm dengan persentase penurunanan konsentrasi metilen biru 5,2%. Waktu optimum CaO/C dicapai pada waktu 120 menit dengan persentase penurunan konsentrasi sebesar 20,968%. Kinetika reaksi CaO/C mengikuti model kinetika orde ke-1 dengan nilai konstanta 0,0018 min-1.
Co-Authors Aldes Lesbani Devi, Ayu Aulia Erviana, Desti Jefri Nur Ahmad, Nur Risfidian Mohadi Savira, Dila siti rodiah Zultriana