A5089468829- Magnetic Properties and Synthesis of Ferrites
- Multiferroics and related materials
- Iron oxide chemistry and applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Magnetic properties of thin films
- Characterization and Applications of Magnetic Nanoparticles
- Engineering and Technology Innovations
- Nanoparticles: synthesis and applications
- Nanomaterials for catalytic reactions
- Electromagnetic wave absorption materials
- Advanced biosensing and bioanalysis techniques
- Nanoparticle-Based Drug Delivery
- Copper-based nanomaterials and applications
- Pigment Synthesis and Properties
- Plasmonic and Surface Plasmon Research
- Advanced Photocatalysis Techniques
- Biosensors and Analytical Detection
- Advanced Nanomaterials in Catalysis
- Magneto-Optical Properties and Applications
- Quantum Dots Synthesis And Properties
- Magnetic Properties and Applications
- Computer Science and Engineering
- Analytical Chemistry and Sensors
- Advancements in Battery Materials
- Mathematics Education and Pedagogy
Universitas Gadjah Mada
2016-2025
ADA University
2014-2025
Universitas Islam Negeri Raden Intan Lampung
2024
Universitas Halu Oleo
2022
Universitas Halmahera
2021
Samudra University
2021
Udayana University
2021
Nagoya University
2005-2011
Japan Society for the Promotion of Science
2011
This study focused on green-synthesized magnetite/carbon dots nanocomposites (GS-Fe3O4/Cdots) utilizing Moringa oleifera leaf extract and watermelon peel waste for rapid degradation of methylene blue (MB) dye. Co-precipitation hydrothermal method were used to synthesize GS-Fe3O4 Cdots, respectively. In addition, the sonication was link Cdots Fe3O4 surface. X-ray diffraction spectrum GS-Fe3O4/Cdots inform cubic inverse spinel has crystallite size in range 10.1–7.2 nm. The also decreased with...
We report magnetically-separable, reusable, green-synthesized Fe3O4/rGO/ZnO, as heterogeneous catalyst for photo-Fenton degradation of organic pollutants in aqueous solution under certain treatments. Fe3O4 nanoparticles was using Moringa oleifera leaf extract, while rGO synthesized utilizing Amaranthus viridis extract. Fe3O4/rGO composited sonication treatment. Afterwards, doped with ZnO various concentration ZnO. X-ray diffraction and selected area electron showed that had spinel cubic...
It has been successfully carried out the synthesis of silver nanoparticles by chemical reduction method. Silver nitrate (AgNO3) is used as metal precursor and trisodium citrate reducing agent well use polyvinyl alcohol (PVA) a stabilizer. The formation was observed visually with discoloration (yellow). To excite surface plasmons, attenuated total reflection (ATR) method Krestchmann configuration prism coupling. maximum absorption band in UV-Vis spectrometer shows red shift 429.43 nm...
The green synthesized Ag/rGO composite nanoparticles were successfully using the Hummers method with Amaranthus viridis extract. localized surface plasmon resonance (LSPR) behaviour of was studied Kretschmann configuration consisting prism/Au/Ag/rGO/air. addition to prism system aims determine effect rGO on SPR angle. X-ray diffraction results showed that there four peaks presence lattice planes (111), (200), (220), and (311), proving face-centered cubic crystal structure silver....
Abstract The magnetite Fe 3 O 4 nanoparticles were synthesized by using chemical co-precipitation method and these successfully coated polyethylene glycol (PEG) with variation concentrations of PEG. used as a bimolecular label (nano-tags), exhibiting soft magnetic behavior magnetization ( M s ) 77.16 emu g −1 coercivity H c 50 Oe respectively. was biocompatible polymer. x-ray diffraction (XRD) patterns the showed that well crystallized. It also confirmed existence invers spinel. peak 35.4°...
In this study, a simple, rapid, and environmentally friendly green approach for synthesizing Fe 3 O 4 /chitosan nanoparticles with various concentrations was developed. The had spherical shape cubic inverse spinel structure. functionalization of the using chitosan increased crystallite size from 7.2 to 7.8 nm. Fourier transform infrared spectra showed existence characteristic peaks in addition peak at 578 cm −1 , which corresponds stretching Fe−O group. UV-visible demonstrated wide...
The reusability of CoFe 2 O 4 @ZnO core–shell nanoparticles (NPs) for the photocatalytic degradation methylene blue (MB) under UV radiation was successfully investigated. NPs with various –to–ZnO concentration ratios were synthesized as magnetic photocatalysts. X-ray diffraction spectra showed that had a cubic spinel ferrite phase structure and hexagonal wurtzite ZnO. Fourier-transform infrared presence M oct -O, tet Zn–O at 593, 347–389, 410–429 cm −1 , respectively. saturation...
This study investigates the green synthesis of Fe3O4/Ag composite nanoparticles using Moringa Oleifera (MO) extract in coprecipitation process. The microstructure, optical, and magnetic properties synthesized are examined specific absorption rate (SAR) is measured. X-ray pattern results reveal that addition Ag increases crystallite size to 25.4–32.6 nm. Fourier transform infrared spectra confirm presence nanoparticles. Magnetic measurements show samples have soft ferromagnetic at room...
Biosensors-on-chip (BoC), compact and affordable public diagnostic devices, are vital for preventing health crises caused by viral bacterial mutations, climate change, poor diets. Clinical, remote, field use possible with these devices. BoC is used in food safety, environmental monitoring, medical diagnosis. The coupling of tunneling magnetoresistance (TMR) sensing elements chip form surface functionalized iron oxide nanoparticles (IONPs) as a biomarker, known TMR/ IONPs, allows devices to...
The availability of rapid and low-cost instruments to detect magnetic nanoparticles (MNPs) concentrations is vital in giant magnetoresistance (GMR)-based biosensors. This paper reports a new setup for simple GMR sensor using the commercial chip AAL024 as transducer. It was combined with basic differential amplifier microcontroller acquire digital output voltages detection green-synthesized (GS)-Fe3O4 MNPs label streptavidin-coated biosensor applications. As characteristic feature Fe3O4,...
The investigation of the efficiency recycling, rapid separation, high catalytic performance photocatalyst materials, and properties material after photocatalytic process (after use) are considered important for photodegradation applications. Green-synthesized hybrid magnetic/semiconductor nanocomposites utilizing Moringa oleifera leaf extract exhibit excellent reusability under ultraviolet (UV) irradiation. In this study, CoFe2O4/TiO2 were investigated as photocatalysts. green-synthesized...
This study focused on the green synthesis of Fe3O4/Chitosan (Cs) nanocomposites using Moringa oleifera leaf extract, which showed good photocatalytic activity when exposed to ultraviolet (UV) irradiation. X-ray diffraction spectrum Fe3O4/Cs informs cubic inverse spinel and has crystallite size in 10.1 – 11.7 nm range. The also increased with increase Cs mass. morphology Fe3O4 was nearly spherical. transmission electron microscope most uniform at around 17.1 nm. Fourier transform infrared...
Research of green-synthesized reduced graphene oxide (rGO) using Amaranthus v iridis (AV) extract has been successfully conducted. The modified Hummers method was used to synthesize (GO), then hydrazine hydrate and AV obtain rGO. X-ray diffraction results illustrate the change in crystalline structure from graphite Peaks at 2θ angles 26.5°, 9.1°, 24.1° indicate characteristics graphite, GO, rGO, respectively. transmission electron microscopy image shows formation 2D nanosheet morphology with...