Abstract Thesis

Effect of Fe Doping on Characteristics and Activity of Bi2O3 Photocatalytic for Amoxicillin Degradation

Bella Aprimanti Utami (24040119420018)

Abstract

Research on Fe doped Bismuth Oxide (Bi₂O₃/Fe) material synthesized using the precipitation method assisted by microwave radiation has been done. This study aimed to analyze the effect of Fe on the characteristics of Bi₂O₃ and analyze its ability to degradation of amoxicillin. The addition of Fe was carried out with various concentrations, namely 0%, 1%, 3%, 5%, 7% and 9%, respectively. The synthesis results were characterized using X-Ray Diffraction (XRD) to determine the structure and size of crystal. Then characterized using Scanning Electron Microscopy-Energy Dispersive X (SEM-EDX) to determine the morphology, particle size, and chemical elements contained in the material. In addition, the energy gap was measured using the spectrum characterization of the Ultraviolet-Visible (UV-Vis) Spectrophotometer. To determine the photocatalytic activity of Bi₂O₃/Fe, a photodegradation test was carried out for Amoxicillin degradation, the most optimal photocatalytic activity was obtained in 3% Fe doped Bi₂O₃ material with a material degradation rate of 0.0079 min^-1, and a degradation efficiency of 76.00%.

Keywords : Bi2O3/Fe, Microwave Irradiation, Photodegradation, Amoxicillin

Academic Counselors

1. Heri Sutanto
2. Eko Hidayanto

Automated Calculation of Height and Area of Human body for Estimating Body Weight Using Kinect camera

Ariij Naufal (24040118420015)

Abstract

Research on Fe doped Bismuth Oxide (Bi₂O₃/Fe) material synthesized using the precipitation method assisted by microwave radiation has been done. This study aimed to analyze the effect of Fe on the characteristics of Bi₂O₃ and analyze its ability to degradation of amoxicillin. The addition of Fe was carried out with various concentrations, namely 0%, 1%, 3%, 5%, 7% and 9%, respectively. The synthesis results were characterized using X-Ray Diffraction (XRD) to determine the structure and size of crystal. Then characterized using Scanning Electron Microscopy-Energy Dispersive X (SEM-EDX) to determine the morphology, particle size, and chemical elements contained in the material. In addition, the energy gap was measured using the spectrum characterization of the Ultraviolet-Visible (UV-Vis) Spectrophotometer. To determine the photocatalytic activity of Bi₂O₃/Fe, a photodegradation test was carried out for Amoxicillin degradation, the most optimal photocatalytic activity was obtained in 3% Fe doped Bi₂O₃ material with a material degradation rate of 0.0079 min^-1, and a degradation efficiency of 76.00%.

Ketywords: Kinect, Matlab, body size, image segmentation, depth image

Academic Counselors

1. 1. Catur Edi Widodo
   2. Choirul Anam

Syntheses of Colloid Gadolinium Oxide Nanoparticles Using Pulse Laser Ablation Method in Liquid Medium as a Dual Biomedical Agent

Ichsan Nur Lintang (24040117410002)

Abstract

Low-energy of pulse laser used to synthesize gadolinium nanoparticles colloid as a biomedical agent, which have a narrow size distribution, and small size. The use of pulse laser ablation produces gadolinium nanoparticles colloid that tend to be unstable which limits their application as a biomedical agent. Polyvinylpyrrolidone wass used to reduce the level of aggregation and agglomeration of gadolinium colloid nanoparticles and produce small and stable colloidal nanoparticles. This study aims to produce gadolinium nanoparticles colloid by laser ablation in aquades and PVP medium that show radiosensitizer properties and contrast agents of CT scans. Gadolinium nanoparticles colloid was synthesized using Nd: YAG pulse laser with a wavelength of 1064 nm, energy of 45 mJ, pulse width of 7 ns, repetition rate of 10Hz, and ablation time of 180 minutes in distilled water and PVP solution. Gadolinium nanoparticles colloid was characterized using Fourier Transform Infrared (FTIR), Ultraviolet-Visible spectroscopy (UV-Vis) and Particle Size Analyzer (PSA). Radiosensitizer and contrast agent properties of gadolinium nanoparticle colloid examined in vitro using LINAC 6MV therapeutic and CT scans. The laser ablation of gadolinium in aquades 5 mM PVP solution resulted in an unstable colloidal gadolinium hydroxide nanoparticle. The laser ablation of gadolinium in 10 mM PVP solution produced colloidal gadolinium oxide nanoparticles with a particle size of 7 until 11nm, stable and dispersive. Gadolinium nanoparticles colloid in aquades medium and in PVP solution showed radiosensitizer effects and gadolinium nanoparticles colloid in 10 mM PVP medium have contrast agent effects with a gray value of 215 until 255.

Keywords: Colloid, gadolinium, contrast agent CT Scan, Radiosensitizer

Academic Counselors

1. Iis Nurhasanah
2. Ali Khumaeni