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Aldes Lesbani
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Pusat Riset Material Anorganik dan Senyawa Kompleks, Prodi Magister Ilmu Material Universitas Sriwijaya, Jl. Padang Selasa No 524 Bukit Besar Palembang Sumatera Selatan, 30139.
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INDONESIA
Indonesian Journal of Material Research
Published by Universitas Sriwijaya
ISSN : 29871654     EISSN : 29871654     DOI : https://doi.org/10.26554/ijmr.xxx
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering
The scope of IJMR encompasses a diverse array of research areas, including but not limited to Nanomaterials and nanotechnology Biomaterials and biocompatibility Polymers, composites, and hybrid materials, Electronic, optical, and magnetic material Advanced ceramics and glasses, Metals and alloys Functional materials and smart materials, Surface engineering and coatings, Materials characterization, testing, and simulation Materials for energy storage, conversion, and harvesting, Environmental and sustainable materials Advanced manufacturing processes and materials engineering
Arjuna Subject : Ilmu Material (semua kategori) - Ilmu Material (Lain-Lain)
Articles 53 Documents
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A Review: Carbon Nanotubes (Preparation, Properties, and Biomedical Applications) Rusul K. Ismail; Shahlaa M. Abd Al Hussan
Indonesian Journal of Material Research Vol. 3 No. 3 (2025): November
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20253361

Abstract

One of the most significant areas of nanotechnology is carbon nanotubes. Because of their special properties and cylindrical structure, carbon nanotubes are employed in nanotechnology applications. Their many qualities, such as stiffness, strength, and surface area, have generated interest in the pharmaceutical industry. Single-walled nanotubes and multiple-walled nanotubes are the two types of CNTs. There are several techniques for creating CNTs, including chemical deposition, laser ablation, and arc discharge. These nanotubes are employed in drug delivery and diagnostic systems. Because of its many applications in medicine delivery, it is critical to understand the toxicities of carbon nanotubes and how to handle any problems that may arise. Many research have lately focused on the mechanism of carbon nanotube biodegradation. Single and double walled carbon nanotubes must be a safer and more effective way to distribute medications.
Comparative Assessment of Procion Red Removal Using Magnetite-Based Composites with Humic Acid, Activated Charcoal, and Lignin Ahmad, Nur; Wijaya, Alfan; Amri
Indonesian Journal of Material Research Vol. 3 No. 3 (2025): November
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20253368

Abstract

This investigation presents the synthesis and comparative assessment of three magnetite-based composite adsorbents, including Magnetite Humic Acid (MA), Magnetite Activated Charcoal (MB), and Magnetite Lignin (MC), aimed to remove Procion Red (PR) from aqueous solutions. The characterization of the materials was conducted through XRD, BET, and FTIR analyses, which validated the successful synthesis of magnetite and its interactions with the respective organic components. The point of zero charge (pHpzc) values obtained were 4.75, 5.09, and 4.10 for MA, MB, and MC, respectively. Adsorption experiments were performed under these pHpzc conditions to mitigate electrostatic influences. Kinetic investigations demonstrated that the adsorption process adhered to a pseudo-second-order model, signifying that chemisorption was the prevailing mechanism. Furthermore, the Langmuir isotherm yielded the most accurate representation of the equilibrium data, implying the occurrence of monolayer adsorption. MB demonstrated the highest adsorption capacity of PR, recorded at 52.632 mg/g at a temperature of 50oC. This observation underscores the benefits associated with its elevated surface area and the effective dispersion of Fe3O4 particles within the activated carbon matrix. The comparative analysis elucidates the impact of organic matrix selection on surface characteristics, interaction dynamics, and the overall efficacy of adsorption processes. This study presents novel findings regarding the development of natural carbon-magnetite composites aimed at enhancing the efficiency of dye removal processes.
Evaluation of Natural Zeolite and Bentonite as Catalysts in Cyclohexanone Oxidation with Hydrogen Peroxide Hidayatullah, Muhammad; Wibiyan, Sahrul; Mohadi, Risfidian; Lesbani, Aldes
Indonesian Journal of Material Research Vol. 3 No. 3 (2025): November
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20253369

Abstract

The catalytic oxidation of cyclohexanone using environmentally benign oxidants remains a key challenge in sustainable organic synthesis. In this study, natural zeolite (clinoptilolite and mordenite) and bentonite were evaluated as heterogeneous catalysts for the oxidation of cyclohexanone with hydrogen peroxide under reflux at 90 °C. Structural characterization by X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) confirmed the aluminosilicate frameworks, where clinoptilolite exhibited the highest crystallinity, followed by bentonite and mordenite. The oxidation products were analyzed using FTIR, melting point measurements, and gas chromatography–mass spectrometry (GC–MS). Despite the catalytic activity of all materials, FTIR and melting point analyses revealed that the expected adipic acid was not formed under the applied conditions. GC–MS results indicated the formation of partially oxidized oxygenated intermediates such as alcohols, ethers, and carbonyl derivatives, whose distribution strongly depended on the catalyst’s pore structure and surface properties. Clinoptilolite promoted confined partial oxidation due to its microporous structure, whereas bentonite facilitated non-selective oxidation owing to its open layered framework. These findings emphasize that the interplay between molecular confinement and oxygen accessibility governs the selectivity of cyclohexanone oxidation and provides insights for the rational design of improved zeolite- and clay-based catalytic systems for green oxidation reactions.
Synthesis of Adipic Acid via Eco-Friendly Oxidation of Cyclohexanone–Cyclohexanol Mixture over B₂O₃–SiO₂ Catalyst Sitanggang, Jonra P.; Wijaya, Alfan; Mohadi, Risfidian; Lesbani, Aldes
Indonesian Journal of Material Research Vol. 3 No. 3 (2025): November
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20253370

Abstract

The synthesis of adipic acid through the oxidation of a cyclohexanone–cyclohexanol mixture was investigated using 30% hydrogen peroxide (H₂O₂) as the oxidizing agent and a B₂O₃–SiO₂ catalyst synthesized via heat treatment at various temperatures. This study aimed to evaluate the catalytic performance of B₂O₃–SiO₂ in facilitating the oxidation reaction and to determine the optimum reaction conditions for achieving the maximum yield of adipic acid. The effects of reaction time and temperature on the oxidation process were systematically studied. The reactions were conducted for 5, 6, 7, and 8 hours at temperatures of 60°C, 70°C, 80°C, and 90°C. The reaction products were analyzed using Gas Chromatography (GC) and Fourier Transform Infrared Spectroscopy (FT-IR). The results showed that the B₂O₃–SiO₂ catalyst exhibited the highest catalytic activity at 90°C, producing adipic acid with a maximum yield of 2.36% after 7 hours of reaction. Based on FT-IR characterization, it was observed that the B₂O₃–SiO₂ catalyst became unstable after the reaction, as indicated by the reduction of Brønsted acid sites. This decrease in acidity led to a less effective catalytic performance, resulting in a suboptimal oxidation process and a relatively low yield of adipic acid.
Selective Adsorption Performance of Graphene Oxide Toward Norfloxacin and Moxifloxacin in Aqueous Solution Amri, Amri; Wijaya, Alfan
Indonesian Journal of Material Research Vol. 3 No. 3 (2025): November
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20253372

Abstract

Norfloxacin (NFX) and moxifloxacin (MFX) are widely used fluoroquinolone antibiotics that are frequently detected as residues in aquatic environments. Their persistent presence can increase the risk of antibiotic-resistant bacteria (ARB) emerging, making the selective removal of these compounds from water systems essential. This study evaluates the adsorption selectivity of NFX and MFX using graphene oxide (GO) as a potential adsorbent. The results show that GO exhibits a higher affinity for NFX than for MFX, indicating selective interactions between the functional groups of GO and NFX molecules. These findings confirm the potential of GO as a selective adsorbent for the removal of specific antibiotics from aqueous solutions and provide a basis for developing more effective wastewater treatment strategies.
Application of Nickel-Alginate Beads in Reducing Methylene Blue Contamination in Aqueous Media Qonita Yusry, Azwinda; Setyaningtyas, Tien; Riyani, Kapti; Amaliana Sulistyowati, Alin; Riapanitra, Anung
Indonesian Journal of Material Research Vol. 4 No. 1 (2026): March
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20264177

Abstract

In this study, Ni-alginate beads (Ni-ABs) were prepared to enhance their adsorption capacity for methylene blue. The adsorbent was characterized using FTIR and SEM instruments. The adsorption of Ni-ABs for methylene blue was investigated in a batch adsorption study. The adsorption conditions for Ni-ABs for methylene blue were optimized, including the pH of the methylene blue solution and contact time. The adsorption capacity of Ni-ABs for methylene blue reached 90% at pH 6 after 90 minutes of contact. The experimental results were evaluated using the Langmuir and the Freundlich isotherm models. The adsorption behavior followed the Freundlich model, suggesting multilayer adsorption. Regeneration of Ni-ABs using a 0.5 M HCl solution. The Ni-ABs exhibited good stability, with adsorption efficiencies ranging from 76–90% and desorption rates between 64–85% over five cycles. These results indicated that Ni-ABs were effective and reusable adsorbents for the selective removal of methylene blue from aqueous solutions. This study demonstrates a simple Ni-alginate bead system with high reusability as a low-cost alternative adsorbent compared to previously reported alginate-based materials.
Physical Fabrication of Metallic Nanoparticles: Methods, Mechanisms, Control Variables, Emerging Trends Israa A. Hammed; Thaer A. Mezher
Indonesian Journal of Material Research Vol. 4 No. 1 (2026): March
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20264175

Abstract

Physical methods for synthesizing metal nanoparticles (MNPs) are of significant importance because the resulting nanomaterials can be produced with high purity, minimal chemical bonding, and well-defined structural characteristics. In these approaches, metals are transformed from the solid state into atomic or plasma states using external energy sources such as heat, electricity, plasma, or light. The generated species are then rapidly cooled, leading to agglomeration and the formation of nanoparticles. This study focuses on the principal physical techniques employed for metal nanoparticle fabrication, including inert gas condensation, magnetron sputtering, spark discharge, and laser ablation in liquids. The fundamental physical mechanisms governing nanoparticle formation—such as vapor supersaturation, homogeneous nucleation, coagulation, agglomeration, and surface diffusion—are discussed in detail. Furthermore, the influence of key process parameters on nanoparticle properties, including particle size, shape, crystal structure, composition, and surface chemistry, is systematically examined. A comprehensive comparison of these techniques is provided, highlighting their advantages, limitations, scalability, and suitability for various applications. Finally, emerging challenges and future perspectives are addressed, including real-time process control, the synthesis of high-entropy multicomponent nanoparticles, and the implementation of green chemistry principles in large-scale nanoparticle production.
A Review of Applications of Nanofibers Fabrication via Electrospinning and Non-Electrospinning Techniques Ramadhan, Roaa; Ahmed J.M.AL-Zuhairi; Ahmad S. Lateef; Mohammed K. Khalaf; Amer D. Majeede
Indonesian Journal of Material Research Vol. 4 No. 1 (2026): March
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20264176

Abstract

Nanofibers possess distinct traits and adaptable possible uses that can help with both creative approaches and chances for sustainable production of energy, as well as providing innovative solutions to the complicated problems of the biomedical, medicinal, and environmental surrounded. It describes the development and timelines of nanofiber technologies with different physical and chemical properties. It also discusses the different methods of production, including traditional methods of spinning and other non-electrospinning methods, like needleless spinning. Specifically, advanced nanofibers are employed as electrodes and membranes in solar cells, batteries, fuel cells, and supercapacitors. They are also utilized in low pressure procedures for the treatment and purification of blood, water, and wastewater, as well as membrane technologies for ultra-high efficiency air filtration systems.
Effect of Sodium Fluoride and Aluminum Sulfate Salts on PVA Polymer Film Synthesized Using Casting Technology Kalf, Duha Sabeeh; Jasim, Saif Khalel
Indonesian Journal of Material Research Vol. 4 No. 1 (2026): March
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20264178

Abstract

Polymer films were manufactured from polyvinyl alcohol (PVA) doped with a concentration of sodium fluoride (NaF) and aluminum sulfate (Al2(SO4)3) salts via the solution casting method. The differences in crystallinity and transformation temperatures of solid polymer electrolyte sheets were analyzed using differential scanning calorimetry (DSC). The formation of a complex structure between PVA polymer and a salt were confirmed using Fourier transform infrared spectroscopy (FTIR). Absorption spectra were obtained in the wavelength range of 200–1200 nm and analyzed using the absorption equation for amorphous materials. The energy gap values showed a clear dependence on the concentration of sodium fluoride and aluminum sulfate. The indirect energy gap was determined and analyzed in relation to the integration of charge-transfer complexes within the grafted materials.
Characterization of Epoxy/Fe₂O₃ Nanocomposites with Enhanced Physical Properties Sallal, Ali; M. Abdallh, Sarah; A. Nayef, Shahad
Indonesian Journal of Material Research Vol. 4 No. 1 (2026): March
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20264183

Abstract

In this study, epoxy/iron oxide (EP/Fe₂O₃) nanocomposites were prepared at different weight percentages (0.1, 0.3, and 0.5 wt%) to investigate their structural, thermal, electrical, dielectric, and mechanical properties. Scanning electron microscopy (SEM) images showed that the Fe₂O₃ nanoparticles possessed a homogeneous morphology with irregular grain size and an average size of 60–70 nm, indicating their suitability for reinforcing polymer matrices. The addition of Fe₂O₃ nanoparticles significantly improved the thermal conductivity of the epoxy due to the formation of partial phonon transport pathways and enhanced interfacial interaction at higher addition percentages. Dielectric measurements showed an increase in the dielectric constant and dielectric loss with increasing Fe₂O₃ content, with both decreasing with increasing frequency due to interfacial polarization mechanisms. AC electrical conductivity results demonstrated frequency-dependent behavior with a marked improvement in conductivity upon nanoparticle addition. Furthermore, the Shore D hardness test results showed a gradual improvement with increasing Fe₂O₃ content, attributed to the restriction of epoxy chain movement and increased cross-linking density. These results confirm that Fe₂O₃ is an effective filler for enhancing the performance of multifunctional epoxy composites.

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