Results in Materials最新文献

{"title":"Effect of welding current on the mechanical performance and microstructural evolution of GTAW-welded AISI 304 stainless steel butt joints","authors":"Montri Sangsuriyun ,&nbsp;Prayoon Surin ,&nbsp;Pramot Srinoi ,&nbsp;Somkiat Thermsuk","doi":"10.1016/j.rinma.2026.100903","DOIUrl":"10.1016/j.rinma.2026.100903","url":null,"abstract":"<div><div>Precise control of heat input is critical in Gas Tungsten Arc Welding (GTAW) of thin-section stainless steels to ensure sound fusion, microstructural stability, and reliable mechanical performance. This study systematically investigates the influence of welding current (15–40 A) on bead morphology, microstructural evolution, and mechanical behavior of autogenously welded AISI 304 stainless steel. To isolate the effect of welding current, all experiments were conducted under constant shielding gas flow rate and travel speed. Microstructural characterization was performed using optical microscopy, while mechanical performance was evaluated through microhardness profiling and tensile testing across the weld metal (WM), heat-affected zone (HAZ), and base metal (BM). The results indicate that welding current strongly governs grain morphology, HAZ width, and overall joint integrity. The base metal exhibited the highest hardness (∼202 HV), whereas the HAZ showed the lowest hardness as a result of thermal softening. Although the maximum ultimate tensile strength (∼350 MPa) was obtained at 40 A, excessive heat input promoted grain coarsening and non-uniform HAZ development, adversely affecting metallurgical stability. In contrast, insufficient heat input at low currents (15–20 A) resulted in incomplete fusion and reduced joint efficiency. A favorable balance between fusion quality and microstructural refinement was consistently achieved within the 25–30 A range, producing fine austenitic grains, smooth hardness gradients, and stable tensile performance. Taken together, these results clarify the structure-property relationships governed by welding current and highlight the importance of heat-input optimization in GTAW. The findings provide practical guidance for parameter selection and quality control in the fabrication of thin-walled AISI 304 stainless-steel components requiring high structural reliability.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"29 ","pages":"Article 100903"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anisotropic dynamic properties evaluation of local sand in Bangladesh by cyclic triaxial test","authors":"Md. Foisal Haque ,&nbsp;Md. Assaduzzaman ,&nbsp;Mehedi Ahmed Ansary","doi":"10.1016/j.rinma.2026.100904","DOIUrl":"10.1016/j.rinma.2026.100904","url":null,"abstract":"<div><div>The sand shows an anisotropic behavior in reality. For this purpose, this research evaluated the anisotropic properties (i.e., strains, deviatoric stress, pore pressure, and Poisson's ratio) of the local sand in Bangladesh under the uniform sinusoidal loading by the cyclic triaxial test. The grain size distribution provided fundamental properties of sand, which were used during the triaxial test. The lateral strain of the local sand is 84.6 % higher than that of the vertical strain due to the lower stiffness in the lateral direction compared to the vertical. The maximum and failure Poisson's ratios are obtained to be 0.5 and 0.894, respectively. The failure Poisson's ratio indicates the worst condition of sand, which may not be suitable for the application in engineering practice. Also, the buildup of excessive pore pressure inside the sand particles indicates the liquefaction phenomenon. In addition, the decrement of the pore pressure from the peak point informs the failure condition of sand. However, these properties of the sand may help engineers in practice to know preliminary information.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"29 ","pages":"Article 100904"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Valorization of palm kernel shell waste in fired clay bricks: Multi-scale characterization and sustainable applications","authors":"Hamka Hamka Adolphe Claudel ,&nbsp;Djomi Rolland ,&nbsp;Olembe Roland Yves ,&nbsp;Cyrille Ghislain Fotsop ,&nbsp;Kan Gaël Delore ,&nbsp;Tewa Jules ,&nbsp;Pecheu Nkepdep Chancellin ,&nbsp;Tchotang Theodore","doi":"10.1016/j.rinma.2026.100896","DOIUrl":"10.1016/j.rinma.2026.100896","url":null,"abstract":"<div><div>This study investigates the effects of palm kernel shell powder as a bio-additive in clay bricks fired at 900 °C a firing temperature representative of industrial practice in Central and West Africa and specifically recommended for Cameroonian clays. Bricks incorporating varying PKS dosages (0–60 %) were analyzed for their physicochemical and thermomechanical properties. Results show that PKS addition reduces density but increases loss on ignition, water absorption, and linear shrinkage. Mechanical strength decreases significantly with higher PKS content, limiting structural applications to ≤25 % PKS, while higher contents (&gt;35 %) show potential for thermal insulation due to enhanced porosity. Regarding the bricks' chemical properties, scanning electron microscopy (SEM) coupled with energy dispersive X-ray (EDX) mapping identified the various atoms present in each sample (C, O, Mg, Fe, Si, Al, Na, K, and Ti). Furthermore, FTIR (Fourier transform infrared spectroscopy) and XRD (X-ray diffraction) confirmed the crystalline nature of kaolinite and revealed the amorphous structure of the shell powder in the material after heating it to 900 °C. These findings were corroborated by TGA, DTA, and DTG analyses. Regarding mechanical properties, the compressive and flexural strengths of bricks fired at 900 °C and containing the bio-additive decreased significantly with increasing palm kernel shell powder content in the composite. An optimal compromise was identified at 25 wt% PKS, yielding a lightweight brick (970.90 kg/m³) with a compressive strength of 5.8 MPa, suitable for non-loadbearing applications while reducing raw clay consumption by one quarter.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"29 ","pages":"Article 100896"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optical investigation of crack initiation and propagation during the single fibre pull-out test","authors":"Carol Winnifred Rodricks,&nbsp;Gerhard Kalinka","doi":"10.1016/j.rinma.2025.100857","DOIUrl":"10.1016/j.rinma.2025.100857","url":null,"abstract":"<div><div>The single fibre pull-out test is an important micromechanical test used to evaluate the fibre-matrix interface of polymer matrix composites primarily under shear stress. Models interpreting force-displacement curves from pull-out tests often rely on assumptions about the stress distribution along the loaded fibre and crack behaviour at the fibre-matrix interface. This study aims to answer two critical questions: does the crack initiation and propagation at the interface proceed as in elastic materials, or is the debonding instantaneous as in ductile materials? And if elastic, where does the crack initiate and how does it propagate? To address these questions, an <em>in situ</em> optical investigation of the pull-out test under polarised light was conducted to observe crack initiation and propagation at the fibre-matrix interface under load.</div><div>It was found that the location of crack initiation and the subsequent crack propagation were dependent on the ratio of the embedding length to the fibre diameter (<span><math><mrow><mi>L</mi><mo>/</mo><mi>D</mi></mrow></math></span>) for a given fibre-matrix combination. For short embeddings (<span><math><mrow><mi>L</mi><mo>/</mo><mi>D</mi></mrow></math></span> &lt; 4), cracks initiated at the embedded fibre's end and grew toward the fibre's entrance into the droplet. Unstable crack growth occurred if the remaining stress on the interface was not reduced with further crack extension. For long embeddings (<span><math><mrow><mi>L</mi><mo>/</mo><mi>D</mi></mrow></math></span> &gt; 4), cracks first appeared at the entrance of the fibre into the matrix. As the crack propagated and the remaining contact area between fibre and matrix decreased, the stress along the fibre resembled the short embedding situation, leading to a second crack arising at the fibre's end. Further loading resulted in both cracks growing toward each other until the rising stress in the remaining contact zone exceeded that needed for stable crack growth, and the fibre was completely detached. These findings enhance the understanding of fibre-matrix interactions and provide valuable insights for improving the interpretation of pull-out test results.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"29 ","pages":"Article 100857"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145799846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of morphology on the radiative properties of geopolymer foams: A theoretical and experimental analysis","authors":"S. Benkhirat ,&nbsp;E. Ribeiro ,&nbsp;K. Nouneh ,&nbsp;G. Plantard","doi":"10.1016/j.rinma.2025.100847","DOIUrl":"10.1016/j.rinma.2025.100847","url":null,"abstract":"<div><div>There has been growing interest in geopolymer foams, particularly with regard to the possibility of imparting macroporous properties with a honeycomb structure. These characteristics are relevant to the problems posed by solar applications. As the photo-conversion process is intimately linked to radiation transfer, it is necessary to understand and describe the correlations between the structural and radiative properties of foams. This study focused on the detailed analysis of the radiative properties of macroporous cellular geopolymer foams with different characteristics in terms of porosity and pore size distribution. Transmittance and reflectance measurements were carried out using a dedicated optical bench. The Two-Flux approximation model was used to describe the radiative transfers taking place in the material. Specific absorption and scattering coefficients were accurately represented in the UV and visible ranges. The importance of the structure of macroporous cellular foams on radiative properties has been discussed. Our results also show that it is possible to play on structural characteristics (porosity, pore size) to obtain distinct radiative properties. This makes it possible to select the most appropriate foam for optimum radiation utilization in a given photoreactor configuration.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"29 ","pages":"Article 100847"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular dynamics study on homogeneous and heterogeneous nanostructuring in massive nitrogen supersaturation into FCC-structured iron","authors":"Abdelrahman Farghali ,&nbsp;Tatsuhiko Aizawa ,&nbsp;Junho Choi","doi":"10.1016/j.rinma.2025.100846","DOIUrl":"10.1016/j.rinma.2025.100846","url":null,"abstract":"<div><div>High nitrogen concentration supersaturation to the austenitic stainless steels, transforms their original structure into an expanded austenite (γ_N) layer with nanostructures and improves their mechanical properties. Molecular Dynamics simulation via MEAM potential was utilized to theoretically describe this massive nitrogen supersaturation process. Nitrogen atoms with 2 eV kinetic energy were impinged into pure FCC-structured iron grains with specific crystal orientations. High nitrogen concentration up to 35 at% is detected at the surface of the expanded austenite (γ_N) phase. This new structure contains high lattice strains against the original FCC structure. The high nitrogen content at the surface decreased homogeneously to a plateau with constant nitrogen content, where the octahedral vacancy sites were occupied with diffusing nitrogen atoms. Toward the nitriding front end, the nitrogen content decreases heterogeneously. This unique phenomenon takes place due to various atomic configurations of iron and nitrogen as a result of nitrogen occupation to both tetrahedral and octahedral vacancy lattice sites. The nitrogen depth profile is categorized into three different regions with dependence on nitrogen concentration, plastic straining, and atomic configurations in each region: nitrogen-impinging dependent region, stationary region, and monotonously decaying region.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"29 ","pages":"Article 100846"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145698254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of the obtained nanostructured composite fibers Fe3O4","authors":"Lesbayev Aidos ,&nbsp;Akalim Doszhan ,&nbsp;Astemessova Kalamkas ,&nbsp;Yerezhep Darkhan","doi":"10.1016/j.rinma.2025.100859","DOIUrl":"10.1016/j.rinma.2025.100859","url":null,"abstract":"<div><div>Magnetite (Fe₃O₄) nanoparticles offer a promising approach for lightweight and effective electromagnetic interference (EMI) shielding. In this study, we synthesized Fe₃O₄ nanoparticles using two methods - chemical co-precipitation and liquid-phase combustion - to investigate how the synthesis method, particle properties, and filler loading influence EMI shielding performance. The co-precipitation technique produced superparamagnetic magnetite nanoparticles with a smaller size (∼10 nm) and better dispersion, while the combustion method yielded larger and more aggregated particles. These nanoparticles were added at low weight fractions (0.25–1.0 wt%) into polymer and cement matrices to create nanocomposites. Microwave transmission tests over the range 0.7–17 GHz showed that even small additions of Fe₃O₄ significantly attenuated EM waves. At an optimal filler content of ∼0.5 wt%, the composites achieved up to 20 dB reduction in the transmitted signal in the 1–2 GHz range. Notably, the addition of 0.25 wt% Fe₃O₄ to a cement composite (10 mm thick) produced approximately 21 dB attenuation at approximately 1.5 GHz, highlighting the effectiveness of shielding with an ultralow filler content. A critical threshold was identified around 0.5 wt% magnetite, beyond which increasing the nanoparticle content beyond this threshold did not produce significant broad-band improvements (due to particle agglomeration and saturation of magnetic losses). Higher loadings (1 wt%) offered only frequency-specific gains at certain bands and did not improve overall shielding performance. Comparatively, co-precipitated Fe₃O₄ composites outperformed those with combustion-synthesized Fe₃O₄ at equal filler loadings due to their finer particle size and more uniform distribution. These findings demonstrate that effective electromagnetic interference (EMI) shielding can be achieved with minimal Fe₃O₄ filler and optimizing nanoparticle synthesis and dispersion are key to developing high-performance, lightweight shielding materials for practical applications.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"29 ","pages":"Article 100859"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145750181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DFT study of structural, mechanical, electronic, and thermoelectric properties of YNbNi2X2 (X=Si or Ge) double half-Heusler alloy","authors":"Job W. Wafula ,&nbsp;George S. Manyali ,&nbsp;John W. Makokha","doi":"10.1016/j.rinma.2025.100882","DOIUrl":"10.1016/j.rinma.2025.100882","url":null,"abstract":"<div><div>This work examines the structural, mechanical, electronic, and thermoelectric characteristics of YNbNi<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>X<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> (X = Si, Ge) double half-Heusler alloys using density functional theory (DFT) computations. Thermodynamic stability was demonstrated by formation energy estimates, and mechanical parameters show ductile behavior with good mechanical stability. YNbNi<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>Si<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> and YNbNi<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>Ge<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> exhibit semiconducting characteristics, with indirect band gaps of 0.51 eV and 0.56 eV, respectively. The Boltzmann transport equation is used to investigate thermoelectric properties, which yield promising Seebeck coefficients and electrical conductivities. The dimensionless figure of merit (ZT) for YNbNi<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>Ge<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> and YNbNi<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>Si<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> peaks at 0.85 and 0.68 at 300 K respectively. However, these values should be regarded as upper limits, as only the electronic contribution to thermal conductivity was considered, and the lattice contribution was not explicitly calculated. The figure of merit (<span><math><mrow><mi>Z</mi><mi>T</mi></mrow></math></span>) increases with temperature suggesting that these are potential materials for energy harvesting applications at high temperature.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"29 ","pages":"Article 100882"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green synthesis using carambola fruit juice and effects of point defects in ZnO nanostructures caused by concentration of Cu2+ or Ti4+ and Cu2+/Ti4+ Co-doping","authors":"Ekane Peter Etape ,&nbsp;Michael Sone Ekonde ,&nbsp;Edwin Akongnwi Nforna ,&nbsp;Enongene Edwin Ewane ,&nbsp;Roussin Lontio Fomekong ,&nbsp;Beckley Victorine Namondo ,&nbsp;Tanto Carine Ngwankfu ,&nbsp;Tih Fabel Teunyui ,&nbsp;Atuse Elvis Ndikum ,&nbsp;Josepha Foba Tendo","doi":"10.1016/j.rinma.2026.100901","DOIUrl":"10.1016/j.rinma.2026.100901","url":null,"abstract":"<div><div>Zinc oxide (ZnO) is an n-type semiconductor with excellent industrial and technological application properties, whose poor optical and electrical properties are attributed to point defects. In an effort to tailor the properties, ZnO was synthesized via a modified oxalate route using carambola fruit juice as a precipitating agent and doped with Ti, Cu, or Cu/Ti to evaluate the influence of the dopant ions and concentration on the ZnO microstructure. The synthesized ZnO NPs adopted a wurtzite hexagonal structure with space group <em>P</em>6₃<em>mc</em>, which changed to p3 as the Cu concentration in the ZnO microstructure increased close to that of Zn. Infrared (IR) spectra of the single-molecule precursor revealed the formation of metallic oxalates. The influences of Cu²⁺, Ti^4+, and Cu²⁺/Ti⁴⁺ doping on the microstructure, morphology, and optical properties of the synthesized ZnO were studied. Scanning electron microscopy (SEM) confirmed the modification of the morphology from cuboidal to porous spherical nanostructures. The PXRD results revealed an insignificant contraction in the cell volume as the dopant elements replaced Zn ions in the microstructure (Ti_0.02Cu_0.02Zn_0.96O, 0.^{5271 nm3} and ZnO, 0.5288 nm^3), but doping improved the mechanical properties, such as the dislocation density, microstrain, and specific surface area, and optical properties, such as the absorbance and optical band gap. Ti_0.02Cu_0.02Zn_0.98O showed a 17.17 % decrease in microstrain, a 9.63 % decrease in dislocation density, and a 5.61 % increase in specific surface area alongside a reduction in the optical band gap within the range of 3.116 eV–2.998 eV. Additionally, the EDS results confirmed the incorporation of various dopant ions within the corresponding microstructures of ZnO. The results also revealed a modification in the crystallite size distributions. These new materials (Cu_0.42Zn_0.58O and Ti_0.02Cu_0.02Zn_0.96O) exhibited greater mechanical stability and a significant propensity for improved microstructural and optical properties, which could potentially modify electrical properties such as conductivity. Therefore, the newly synthesized samples have been confirmed to exhibit improved mechanical and optoelectronic properties compared to those of the parent zinc oxide.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"29 ","pages":"Article 100901"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of ciprofloxacin and metronidazole removal from wastewater using modified zeolite-iron oxide nanocomposites","authors":"Collins Kiguli,&nbsp;Michael Lubwama,&nbsp;Medard Turyasingura,&nbsp;Joseph Jjagwe,&nbsp;Peter Wilberforce Olupot","doi":"10.1016/j.rinma.2026.100900","DOIUrl":"10.1016/j.rinma.2026.100900","url":null,"abstract":"<div><div>The increasing presence of pharmaceutical antibiotics in water systems necessitates research into sustainable, cost-effective water treatment alternatives. This study developed a zeolite – iron oxide nanocomposite, modified with cetyltrimethylammonium bromide surfactant (<em>CTAB</em>) using the coprecipitation method. The nanocomposite was characterized using X-ray fluorescence, X-ray diffraction, Fourier-transform infrared spectroscopy, Scanning Electron Microscopy, Zeta Sizer and Brunauer-Emmett-Teller analyses. The nanocomposite was employed in removal of two common pharmaceutical contaminants from water, namely, Ciprofloxacin (<em>Cipro</em>) and Metronidazole (<em>Metro</em>). Central Composite Design of Response Surface Methodology, was used to assess the influence of pH (3–11), contact time (10–90 min), initial pharmaceutical concentration (0.2–1 mg/L) and adsorbent dosage (0.1–0.5 g) on removal efficiency of the pharmaceuticals. The developed nanocomposite was porous with particle size of 51–69 nm and surface area 129.41 m²/g. The optimal pH (5), contact time (70 min), initial pharmaceutical concentration (0.4 mg/L) and adsorbent dosage (0.4 g) resulted in <em>Cipro</em> and <em>Metro</em> removal of 99.12 % and 99.03 % respectively. The adsorption process followed Langmuir isotherm model and pseudo-second-order kinetics, with R² = 0.99 for both models, thus demonstrating a strong fit. Tests with pharmaceutical plant effluent revealed that over 90 % contaminants, including selected pharmaceuticals and organic matter, were removed under optimal conditions. Effective pharmaceutical adsorption occurs after the removal of organic matter, as this reduces the competition for active sites. These results demonstrate the potential of nanocomposite to remove pharmaceuticals and other organic constituents from wastewater.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"29 ","pages":"Article 100900"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}