Ceramics International最新文献

{"title":"Evolution features and corrosion behavior of (Yb0.2Y0.2Lu0.2Er0.2Sc0.2)2Si2O7 environmental barrier coatings under water vapor conditions at 1400 °C","authors":"Tao Zhang ,&nbsp;Zhiping Wang ,&nbsp;Kunying Ding","doi":"10.1016/j.ceramint.2025.01.164","DOIUrl":"10.1016/j.ceramint.2025.01.164","url":null,"abstract":"<div><div>Yb₂Si₂O₇ and (Yb_0.2Y_0.2Lu_0.2Er_0.2Sc_0.2)₂Si₂O₇ ((5RE_1/5)₂Si₂O₇) environmental barrier coatings were prepared via atmospheric plasma spraying. The corrosion behavior of these two coatings was investigated in a water vapor environment at 1400 °C for 200 h. The effects of high-entropy design and the selection of rare earth elements on improving the corrosion resistance were revealed. The results show that the (5RE_1/5)₂Si₂O₇ coating has better corrosion resistance than the Yb₂Si₂O₇ coating. The percentage of monosilicates in the (5RE_1/5)₂Si₂O₇ coating was even less (47.44 %) after 200 h of corrosion. Furthermore, the corrosion layer (8.19 μm) and thermally grown oxide (TGO) layer (5.85 μm) formed on the top coat of the (5RE_1/5)₂Si₂O₇ coating were thinner than those on the Yb₂Si₂O₇ coating (27.32 and 7.75 μm, respectively). The rational high-entropy design and the introduction of rare earth elements with high binding energy resulted in the enhanced corrosion resistance of the (5RE_1/5)₂Si₂O₇ coating and suppressed interfacial spalling caused by the rapid thickening of the TGO layer. This study provides an important reference for the design and application of environmental barrier coatings.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 13186-13196"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulation of thermal stress predictions for NiTi coating on a stainless-steel substrate using thermal plasma spraying","authors":"Sneha Samal,&nbsp;David Vokoun,&nbsp;Ivo Stachiv,&nbsp;Petr Šittner","doi":"10.1016/j.ceramint.2024.10.328","DOIUrl":"10.1016/j.ceramint.2024.10.328","url":null,"abstract":"<div><div>Thermal stresses arise during the thermal plasma spraying of composite coatings, influenced by the differing thermophysical properties of the substrate and coating materials. This study focuses on a thick coating with a top NiTi layer and a base stainless steel (AISI 304) substrate, along with an epoxy carrier layer. Initially, the substrate is stress-free at the deposition temperature of 1400 °C. Once the coating is applied, the carrier layer activates at 150 °C, introducing thermal stresses before cooling to room temperature (20 °C). Using COMSOL Multiphysics, we examine stress distribution within the assembly at both 150 °C and room temperature. The model treats the thick plate as a two-dimensional solid, with layers assumed to be isotropic and linear elastic. The higher coefficient of thermal expansion in the substrate (17.3 × 10⁻⁶) compared to the coating (11 × 10⁻⁶) results in tensile stresses in the substrate and compressive stresses in the coating.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12337-12345"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new sight of tribological characterization at high temperature for V doping in Cr2AlC","authors":"Nairu He ,&nbsp;Jianhong Li ,&nbsp;Wang Song ,&nbsp;Hao Zhou ,&nbsp;Yuan Fang ,&nbsp;Leping Cai ,&nbsp;Jie Yang ,&nbsp;Junhong Jia ,&nbsp;Henzhong Fan","doi":"10.1016/j.ceramint.2025.01.130","DOIUrl":"10.1016/j.ceramint.2025.01.130","url":null,"abstract":"<div><div>This study synthesized the bulk (Cr_1-xV_x)₂AlC (x = 0, 0.25, 0.5, 0.75) materials by hot-pressed sintering method with the raw materials of Cr, Al, C, and V powders. The mechanical properties and tribological behaviors over a wide temperature range were investigated in detail. The results indicate that the addition of V could enhance the internal energy and micro-stress, hinder the dislocation slip of Cr₂AlC. The hardness, flexural strength, and fracture toughness of (Cr_0.5V_0.5) ₂AlC are 41.0 %, 34.1 %, and 61.7 % higher than those of Cr₂AlC respectively. Notably, the friction tests demonstrate that the solid solution of V could improve the tribological properties of Cr₂AlC at room temperature due to the solid solution strengthening. At medium-high temperatures, on the contrary, the solid solution of V results in the higher friction coefficients compared with Cr₂AlC, which result from the phase of CrVO₄ without lubricating and anti-wear performances formed on the worn surface. When the test temperature reaches 800 °C, the solid solution of V preferentially diffuse to surface, and then be oxided to the AlVO₄, CrVO₄ and V₂O₅. Under the action of thermal-force coupling, AlVO₄ and CrVO₄ decompose to Al₂O₃, Cr₂O₃ and V₂O₅, which endows (Cr_0.5V_0.5) ₂AlC with an excellent self-lubrication performance at 800 °C.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12880-12887"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regulating the microstructures and mechanical properties of Al2O3 whisker reinforced ZrO2 ceramic composite by dynamic hot forging","authors":"Hongtian He ,&nbsp;Haitao Tian ,&nbsp;Jingchong Huang ,&nbsp;Chao Ma ,&nbsp;Hailong Wang ,&nbsp;Daoyang Han ,&nbsp;Hongxia Lu ,&nbsp;Hongliang Xu ,&nbsp;Rui Zhang ,&nbsp;Gang Shao ,&nbsp;Linan An","doi":"10.1016/j.ceramint.2025.01.140","DOIUrl":"10.1016/j.ceramint.2025.01.140","url":null,"abstract":"<div><div>Inherent inferior plasticity of ceramic composites hinders severely the improvement of mechanical properties via increment of dislocation density and transformation of morphology by post-treatment. To date, dynamic hot forging (DHF) is discovered as a direct and efficient strategy to promote deformation and dislocation density in ceramics. Herein, we forge the Al₂O₃ whisker reinforced ZrO₂ composite via DHF and systematically study the effect of dynamic pressure amplitude on the microstructure regulation and mechanical properties. The results show that dynamic pressure can produce intragranular dislocations in the composite, and thus leading to plastic deformation via dislocation-accommodated grain-boundary sliding. Furthermore, the vibration of pressure amplitude can significantly promote dislocation density, and thereby resulting in regulation of dislocation morphology and interior microstructures. The corresponding mechanical properties of the composite is also significantly improved by DHF process. This work provides a novel pathway for regulating microstructures and improving mechanical properties of ceramic composites via DHF.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12976-12983"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A monophase mullite fibrous porous ceramic produced by a gel-casting method","authors":"Daofeng Sun ,&nbsp;Yanjun Li ,&nbsp;Haiyang Lu ,&nbsp;Yue You ,&nbsp;Donghua Liu ,&nbsp;Jin Chen ,&nbsp;Chang Chen ,&nbsp;Donghai Ding ,&nbsp;Guoqing Xiao","doi":"10.1016/j.ceramint.2025.01.112","DOIUrl":"10.1016/j.ceramint.2025.01.112","url":null,"abstract":"<div><div>Monophase mullite fibrous porous ceramics were successfully fabricated by a simple aqueous gel-casting method with mullite fibers as raw material, ρ-Al₂O_3, and microsilica as gelling agents, and the precursor of mullite. The effects of the ratio of powder (ρ-Al₂O₃ powder and microsilica) to mullite fiber on the phase composition, microstructure, sintering behavior, mechanical and thermal properties, and permeability of porous ceramics were investigated. The results showed that mullite fibers were bonded by in-situ formed mullite via the reaction of ρ-Al₂O₃ and microsilica to create a bird's nest structure. As the ratio of powder to mullite fibers was varied from 2:1 to 1:3, the porosity was increased, the bulk density was decreased, the pore size was enlarged, the fractal dimension of the pores was decreased, and the compressive strength of the porous ceramics was decreased accordingly. Due to increased porosity, pore size, and decreased fractal dimension, the prepared porous ceramics have good permeability (the Darcy permeability is up to 4.8 × 10⁻¹² m²). At the same time, the thermal conductivity of the porous ceramics was increased because of the increased thermal transfer in the fiber and pores.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12730-12737"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Collision cascades overlapping effect with cavity/Xe bubble in 3C-SiC:Atomistic simulations and experimental investigations","authors":"Ziqi Cai ,&nbsp;Zhuang Shao ,&nbsp;Chi Xu ,&nbsp;Xinwei Yuan ,&nbsp;Huan He ,&nbsp;Yuanming Li ,&nbsp;Wenjie Li ,&nbsp;Kangfu Zhu ,&nbsp;Qingmin Zhang","doi":"10.1016/j.ceramint.2025.01.121","DOIUrl":"10.1016/j.ceramint.2025.01.121","url":null,"abstract":"<div><div>Heavy gaseous fission product bubbles in nuclear fuel pose a significant influence on the microstructure and properties of coating materials. We employ atomistic simulations, successive carbon and xenon (Xe) ion irradiation experiments, and TEM observations to explore the effects of Xe bubbles and cascade overlap on 3C-SiC, with a particular focus on the Xe/V ratio, bubble size, shape, and stability. Our findings reveal that under a fixed Xe/V ratio, bubbles attract vacancies, leading to increased bubble size. When the bubble diameter is held constant, Xe atoms continue to accumulate until reaching a critical Xe/V value of 0.8, at which point recoil bursting occurs. Cascade overlap transforms the linear cascade behavior of SiC into a surface distribution that dissolves around bubbles. Xe bubbles with high crystallinity (Xe/V = 0.7) repeatedly undergo amorphization and recrystallization during cascade overlap, inhibiting the thermal recovery of self-interstitial atoms in SiC after thermal spikes and enhancing C-C homonuclear bonding around the bubbles. Moreover, we demonstrate that at Xe/V values exceeding 0.5, bubble pressure induces plastic deformation, forming interstitials and promoting chemical disorder and amorphization in the SiC matrix during growth and irradiation. These findings provide fresh insights into the behavior of heavy-atom bubbles under complex irradiation conditions in the SiC matrix.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12818-12830"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physicochemical, photocatalytic degradation, recyclability, kinetics, and scavenging studies of Bi2-2xCoxZnxO3 nanoparticles with reactive black 5 dye","authors":"Farah Fahim ,&nbsp;Muhammad Ramzan ,&nbsp;Muhammad Imran ,&nbsp;Majid Niaz Akhtar ,&nbsp;Abdullah Almohammedi ,&nbsp;Mustafa Mahmoud","doi":"10.1016/j.ceramint.2025.01.089","DOIUrl":"10.1016/j.ceramint.2025.01.089","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Semiconductor photocatalysis technology has great potential as a viable alternative to conventional scientific and technological approaches. The chemical co-precipitation approach was employed in this study to synthesize pure Bi&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; and doped Bi&lt;sub&gt;2-2x&lt;/sub&gt;Co&lt;sub&gt;x&lt;/sub&gt;Zn&lt;sub&gt;x&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; NPs (where x = 0.0, 0.2, 0.4, 0.6, and 0.8). The effects on the structural, morphological, optical, electrochemical, and photocatalytic features were evaluated. The samples were characterized by using XRD, SEM, TEM, XPS, BET, FTIR, PL, CV, Raman and UV–Vis, spectroscopy. The XRD spectra verified that the structure is monoclinic, with a space group of &lt;em&gt;P&lt;/em&gt;2&lt;sub&gt;1&lt;/sub&gt;/&lt;em&gt;c&lt;/em&gt;. Additionally, the average size of the crystallites was between 24 and 49 nm. Scanning Electron Microscopy (SEM) and High-Resolution Transmission Electron Microscopy (HR-TEM) were used to evaluate the materials' surface morphology. The existence of functional groups in Bi&lt;sub&gt;2-2x&lt;/sub&gt;Co&lt;sub&gt;x&lt;/sub&gt;Zn&lt;sub&gt;x&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; nanoparticles was confirmed by FTIR measurements. The photoluminescence (PL) spectra of the synthesized nanomaterials revealed a significant occurrence of charge separation (e&lt;sup&gt;−&lt;/sup&gt;-h&lt;sup&gt;+&lt;/sup&gt;) and a minimal rate of recombination in the extensively substituted materials which is responsible for the enhancement of photocatalytic activity. Cyclic voltammetry was employed to investigate the functional electrodes. Using a potential window ranging from 0 to 0.4 V, the cyclic voltammogram of each working electrode was seen at various scan rates (10-40 mVs&lt;sup&gt;–1&lt;/sup&gt;). In comparison to pure Bi&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;, the specific capacitance was improved by the synergistic effects of Co and Zn in the Bi&lt;sub&gt;2-2x&lt;/sub&gt;Co&lt;sub&gt;x&lt;/sub&gt;Zn&lt;sub&gt;x&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;. The purpose of the XPS investigation to analyze the chemical composition and surface valence state of Co and Zn doped Bi&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; NPs. The optical band gap was evaluated using UV–Vis spectroscopy and showed a decreasing trend from 2.66 to 2.22 eV with increasing the doping concentration. BET analysis was used to determine the surface areas of pure Bi&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; and doped Bi&lt;sub&gt;2-2x&lt;/sub&gt;Co&lt;sub&gt;x&lt;/sub&gt;Zn&lt;sub&gt;x&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; NPs using nitrogen (N&lt;sub&gt;2&lt;/sub&gt;) at 78K and desorption/adsorption isotherms. The photocatalytic activity of Bi&lt;sub&gt;2-2x&lt;/sub&gt;Co&lt;sub&gt;x&lt;/sub&gt;Zn&lt;sub&gt;x&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; was evaluated under sunlight irradiation using reactive black-5 (RB-5) dye as the target and exhibited a 90 % reduction in dye concentration within 105 min. The doped Bi&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; nanoparticles exhibited promising photocatalysts for the removal of the dye from wastewater. Recycling experiments were used to verify the stability of the synthesized nanoparticles, and the findings showed promising stability and reusability. The phytotoxicity experiments were performed by the germination of &lt;em&gt;Coriandrum sativum&lt;/em&gt; seeds in","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12462-12479"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Post-mortem investigation of magnesia-chromium brick corrosion by speiss in a copper smelting furnace","authors":"X. Wen ,&nbsp;M. Shevchenko ,&nbsp;D. Gregurek ,&nbsp;J. Schmidl ,&nbsp;L. Konrad ,&nbsp;R. Walton ,&nbsp;E. Jak","doi":"10.1016/j.ceramint.2025.01.091","DOIUrl":"10.1016/j.ceramint.2025.01.091","url":null,"abstract":"<div><div>Worn magnesium-chromium type refractory bricks and copper-arsenic metal/speiss/matte deposits recovered from the Rio Tinto Kennecott Copper Flash Smelter were analyzed to evaluate the mechanism of refractory penetration and wear by the high-arsenic copper matte/speiss at elevated temperatures. Microstructural characterization was performed using optical and scanning-electron microscopies, and the compositions of the samples and their constituent phases were measured using micro-X-ray fluorescence, energy dispersive X-ray, and wavelength dispersive X-ray spectroscopies. The observed microstructures and sample/phase compositions were interpreted based on the phase-equilibrium behavior of the complex copper-arsenic-magnesium-sulfur-oxygen slag/metal/speiss/gas system. The initial solidification and/or oxidation of the high-grade, arsenic-rich matte was found to cause the formation of the liquid copper-arsenic speiss with the low solidus temperature, which penetrated deeply into the refractory brick lining of the copper flash smelter. When the penetrating speiss was exposed to oxygen, the arsenic present was selectively oxidized and reacted with magnesio-wüstite from the refractory brick to form magnesium arsenates, degrading the refractory material by intergranular corrosion.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12489-12504"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning photocatalytic activity of Ce-doped BaTiO3 nanoparticles by encountering acoustic shock wave flow exposure","authors":"Surendhar Sakthivel ,&nbsp;Sivaprakash Paramasivam ,&nbsp;Periyasamy Velusamy ,&nbsp;S.A. Martin Britto Dhas ,&nbsp;Arumugam Sonachalam ,&nbsp;Ikhyun Kim","doi":"10.1016/j.ceramint.2025.01.147","DOIUrl":"10.1016/j.ceramint.2025.01.147","url":null,"abstract":"<div><div>This article explores the synthesis and characterization of cerium-doped barium titanate (Ce-BaTiO₃) nanoparticles (NPs) for photocatalytic dye degradation application under shock wave flow experimentation. Ce-BaTiO₃ NPs were synthesised by the sol-gel method. We tested the samples with shock wave impulsion (50, 100, and 150) to see how stable the chemical and physical properties of Ce-BaTiO₃ NPs were. X-ray diffraction (XRD) was used to analyse sample structural properties. The crystallographic characteristics of the Ce-BaTiO₃ NPs were ascertained by performing Rietveld refinement analysis, which confirmed a tetragonal structure with an excellent crystalline nature. Raman spectroscopy measurements revealed that the intensity of the shock wave-treated NPs had decreased. According to FESEM, a decrease in particle size is observed with an increase in the number of shock waves. X-ray photoelectron spectroscopy (XPS) examinations revealed the existence of Ba, Ti, O, and Ce in the Ce-BaTiO₃ NPs, with a shift towards higher binding energy. Optical band gap energies were calculated using Tauc plot relations, and it was shown that, for all test samples, values of band gap increased according to the number of shock pulses. Under visible light irradiation, the photocatalytic efficiency was assessed by looking at the degradation of methyl blue (MB) dye. The present experiment revealed that variables including stress, strain, and bond length significantly influenced photocatalytic application.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 13003-13017"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tannic acid-assisted green functionalization of Clinoptilolite: A step-by-step characterization of silver nanoparticles in situ reduction","authors":"Francesca Gattucci,&nbsp;Mari Lallukka,&nbsp;Nadia Grifasi,&nbsp;Marco Piumetti,&nbsp;Marta Miola","doi":"10.1016/j.ceramint.2025.01.151","DOIUrl":"10.1016/j.ceramint.2025.01.151","url":null,"abstract":"<div><div>Recently, the reduction of airborne pathogens and the need for clean and controlled air have gained researchers’ attention. The use of natural zeolites and in particular clinoptilolite as solutions for wastewater treatment and air purification has proven effective due to the remarkable ability of these materials to adsorb toxic compounds.</div><div>In this work, the clinoptilolite powders are subjected to an eco-friendly <em>in situ</em> functionalization process using tannic acid to induce silver nanoparticles (AgNPs) nucleation, improving the antimicrobial potential of the zeolite. The focus of this work is the characterization of this multi-step functionalization process by morphological, compositional and structural analyses.</div><div>The Fourier transform infrared investigation confirms the successful functionalization of clinoptilolite with tannic acid, establishing a foundational step in the process. Successive morphological and compositional analyses verify the introduction of AgNPs onto the zeolite surface, revealing a highly uniform distribution of AgNPs. Furthermore, structural analysis verifies the presence of metallic silver. Finally, the antibacterial efficacy was verified for both Gram-positive and negative bacteria by zone of inhibition test.</div><div>The functionalization of clinoptilolite with AgNPs, achieved without heat treatment or harmful chemicals, offers a promising solution for absorbing toxic compounds while simultaneously preventing bacterial growth. In the future, this innovative approach could play a crucial role in air purification systems targeting airborne pathogens.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 13051-13057"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}