Sintesis dan karakterisasi semikonduktor Zno Doping Mg, N dan Mg, Cu, B dengan metode reaksi padat untuk aplikasi anti bakteri dan fotodegradasi zat warna Metil Violet

Sadad, M. Anwar (2022) Sintesis dan karakterisasi semikonduktor Zno Doping Mg, N dan Mg, Cu, B dengan metode reaksi padat untuk aplikasi anti bakteri dan fotodegradasi zat warna Metil Violet. Sarjana thesis, UIN Sunan Gunung Djati Bandung.

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Abstract

Zinc oxide (ZnO) is a semiconductor material that can be applied in various fields such as photocatalyst because it has a high redox potential and as an antibacterial agent because it has high antimicrobial activity, and excellent biocompatibility. In this study, the synthesis of ZnO, Mg/N-ZnO, and Mg/Cu/B-ZnO was successfully carried out using the solid state method with a calcination temperature of 500 °C for 5 hours. The results of characterization using XRD showed that the ZnO diffraction pattern had a zincite phase. The crystal sizes of ZnO, Mg/N-ZnO, and Mg/Cu/B-ZnO were 32.09, respectively; 33.70; and 28.179 nm. SEM characterization results show that ZnO, Mg/N-ZnO, and Mg/Cu/B-ZnO have non-uniform particle morphology with particle sizes of ZnO, Mg/N-ZnO, and Mg/Cu/B-ZnO, respectively. of 93.67; 86.48457 and 31.8905 nm. The results of Raman spectroscopy characterization showed that there was a shift in the wavenumber of the Raman spectra of ZnO, Mg/N-ZnO, and Mg/Cu/B-ZnO. Photoluminescent spectroscopy characterization results show that there is a shift in the emission of light absorption in the PL spectrum ZnO, Mg/N-ZnO, and Mg/Cu/B-ZnO in the violet emission and the red emission. The results of the photocatalytic test against methyl violet for 120 minutes showed that the efficiency of photocatalytic degradation was 80.89; 96.55; and 92.178 % for each sample of ZnO, Mg/N-ZnO, and Mg/Cu/B-ZnO. The results of the antibacterial activity test using the molecular docking method by calculating the binding energy value of each composite and showed that ZnO, Mg/N-ZnO and Mg/Cu/B-ZnO had antibacterial activity against E. coli (PDB ID: 1KZN, 1YLJ, 2EG7) and S. aureus (PDB ID: 1JIJ, 3G7B, 4CV0)

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