Ceramics International最新文献

{"title":"Influence of porogens on architecture and osteogenesis of porous carbonate apatite artificial bones","authors":"Janice Lay Tin Tan ,&nbsp;Masaya Shimabukuro ,&nbsp;Akira Tsuchiya ,&nbsp;W.M. Ruvini Lasanthika Kumari Wijekoon ,&nbsp;Ryo Kishida ,&nbsp;Masakazu Kawashita ,&nbsp;Kunio Ishikawa","doi":"10.1016/j.ceramint.2025.02.162","DOIUrl":"10.1016/j.ceramint.2025.02.162","url":null,"abstract":"<div><div>Carbonate apatite (CO₃Ap), a mineral component of bone, is an attractive component of artificial bone. In addition to composition, architecture plays an important role in bone regeneration. In this study, three types of porous CO₃Ap scaffolds were fabricated using polyurethane foam and spherical phenol resin as porogens. CO₃Ap-F was fabricated using polyurethane foam as porogen and had large interconnected pores (20–100 μm). CO₃Ap-R was fabricated using spherical phenol resin as porogen and had smaller interconnected pores (2–20 μm). CO₃Ap-FR was fabricated using both porogens and it had a wide range of interconnected pores (2–100 μm). The CO₃Ap-FR scaffolds, which exhibited the most diverse pore size distribution and highest porosity (65 %), demonstrated the weakest mechanical strength among the three scaffolds, but it is comparable to that of the trabecular bone. CO₃Ap-FR significantly enhanced new bone formation and material resorption compared to CO₃Ap-F and CO₃Ap-R, 4 weeks after implantation in femoral bone defects in rabbits. Therefore, CO₃Ap-FR promoted cell and tissue infiltration into the scaffold through large interconnected pores templated from polyurethane foam, and facilitating strut resorption through smaller interconnected pores templated from spherical phenol resin within the struts, respectively, in vivo. Thus, we succeeded in the fabrication of porous CO₃Ap artificial bones with large interconnected pores, high porosity, and sufficient mechanical strength using a combination of two distinct porogens, polyurethane foam and spherical phenol resin. These findings suggest that CO₃Ap-FR artificial bone offers an effective strategy for bone regeneration by presenting a promising solution for addressing severe bone atrophy owing to its wide pore size distribution.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 19963-19972"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178104","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":"Room-temperature synthesis of refractory borides: A case study on mechanochemistry and characterization of Mo-borides and W-borides","authors":"İlayda Süzer ,&nbsp;Amir Akbari ,&nbsp;Faruk Kaya ,&nbsp;Sıddıka Mertdinç-Ülküseven ,&nbsp;Bora Derin ,&nbsp;M. Lütfi Öveçoğlu ,&nbsp;Duygu Ağaoğulları","doi":"10.1016/j.ceramint.2025.02.220","DOIUrl":"10.1016/j.ceramint.2025.02.220","url":null,"abstract":"<div><div>Mo-boride and W-boride powders were produced from native boron oxide, magnesium, and related metal oxide starting materials by mechanochemical synthesis (MCS) followed by an purification treatment. The reaction formation mechanisms and the products were predicted with the FactSage™ thermochemical simulation program. Different conditions were tested to determine the optimum synthesis parameters. MCS was conducted at stoichiometric ratios and different milling durations, using excess reactant amounts over the determined optimum time. After MCS, unwanted phases were removed by HCl acid leaching. Detailed phase analyses of the final powders were obtained by X-ray diffractometer (XRD), whereas detailed microstructure characterization was conducted by scanning electron microscope/energy dispersion spectrometer (SEM/EDS), transmission electron microscope (TEM) and particle size analyzer. Among the utilized parameters, the ideal composition chosen for Mo boride synthesis was 6 h milled and leached MoO₃-100 wt% B₂O₃-50 wt% Mg (1.41 μm), including α-MoB, β-MoB, MoB₂, Mo₂B, Mo₂B₅, and Mo phases. For the synthesis of W boride, the proper composition was found as WO₃-100 wt% B₂O₃-50 wt% Mg (0.37 μm) containing W₂B₅, WB, β-WB, WB₄, W₂B, and W phases after milling for 20 h and leaching. Besides, as a result of the oxidation resistance measurements at 700 and 800 °C, phases belonging to MoO₂ and WO₂ were found along with boride phases.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20518-20531"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177491","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":"Assessment of the hydrogen resistance of (U0.2Zr0.8)C following exposure up to 2327 °C","authors":"Erofili Kardoulaki ,&nbsp;Maria Kosmidou ,&nbsp;Jason Rizk ,&nbsp;Darrin Byler ,&nbsp;Nan Li ,&nbsp;Arne Croell ,&nbsp;Jamelle K.P. Williams ,&nbsp;Jhonathan Rosales ,&nbsp;Kenneth J. McClellan ,&nbsp;Sven C. Vogel","doi":"10.1016/j.ceramint.2025.02.218","DOIUrl":"10.1016/j.ceramint.2025.02.218","url":null,"abstract":"<div><div>Nuclear fuels able to withstand hydrogen exposure &gt;2227 °C with minimal chemical and mechanical changes are required to enable nuclear thermal propulsion reactors for deep space exploration. Previously (U_0.2Zr_0.8)C was demonstrated to exhibit minimal mass loss, while maintaining structural integrity, when exposed to hydrogen at 2327 °C for 3 h. Here, various techniques were implemented for an in-depth characterization of that same sample. X-ray and neutron diffraction were used to assess for formation of secondary phases and to examine lattice parameter changes on the surface and the bulk of the material by probing the full volume of the 8 × 8 × 12 mm sample. In addition, nano-indentation and microstructural characterization were conducted to understand the impact of hydrogen exposure to the mechanical properties and internal microstructure of the material. The results indicate that: 1) no new phases were observed throughout the volume of the hydrogen-exposed sample, nor any lattice parameter evolution was reported suggesting the composition of the sample following hydrogen exposure remained unchanged; 2) the microstructure was not significantly altered, although a small reduction in the grain size (as-fabricated: 12.9 <span><math><mrow><mo>±</mo></mrow></math></span> 2.98 <span><math><mrow><mi>μ</mi></mrow></math></span> m, hydrogen exposed: 8.6 <span><math><mrow><mo>±</mo></mrow></math></span> 2.71 <span><math><mrow><mi>μ</mi></mrow></math></span> m) and an increase in porosity (as-fabricated: 97.82 % theoretical density (TD), hydrogen exposed: 89.31 % TD) were observed; 3) the hardness of the hydrogen-exposed material did increase by ∼8.5 % when compared to the as-fabricated material and the hardness of the hydrogen exposed sample was shown to decrease with increasing temperature, as expected based on experience with ZrC. This detailed post-characterization examination, which is the first of its kind for fuels exposed to pure hydrogen at 2327 °C, suggests (U_0.2Zr_0.8)C would be incredibly resistant against chemical, dimensional, and mechanical changes when exposed to high temperature hydrogen during operation of a nuclear thermal propulsion reactor, making it an attractive fuel choice.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20482-20491"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177787","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":"Effects of Gd doping on the structure and electrical transport properties of Pr2NiO4 ceramics prepared by the sol-gel routine","authors":"Yuchen Xie,&nbsp;Yule Li,&nbsp;Xiangxiang Zhu,&nbsp;Shuang Ding,&nbsp;Xuemei Deng,&nbsp;Qingming Chen,&nbsp;Hui Zhang","doi":"10.1016/j.ceramint.2025.02.224","DOIUrl":"10.1016/j.ceramint.2025.02.224","url":null,"abstract":"<div><div>In this study, a series of polycrystalline Pr_2-<em>x</em>Gd_<em>x</em>NiO₄ (PGNO) ceramics doped with Gd were synthesized using the sol-gel technique. The study analyzed the crystal structure, microstructure, valence states, elemental distribution, and electrical transport properties. X-ray diffraction (XRD) results revealed the presence of an orthorhombic K₂NiF₄-type structure (<em>Fmmm</em>) and a fluorite Pr₆O₁₁ structure (<em>Fm-3m</em>) in the material. Observations of the microstructure confirmed the occurrence of phase separation after the addition of Gd. X-ray Photoelectron Spectroscopy(XPS) analysis indicated a systematic variation in the Pr⁴⁺/Pr³⁺ and Ni³⁺/Ni²⁺ ratios within the system. The observed changes impacted the resistivity (<em>ρ</em>), causing it to vary accordingly. The peak value of the temperature coefficient of resistance (TCR) first increased, then decreased as the Gd content increased. When the Gd content reached 0.025, the maximum TCR achieved −4.68 %·K⁻¹, and the temperature range with |TCR| &gt; 3 extended across the operating range of uncooled infrared detectors (230–330 K). Gd doping significantly enhances electrical transport properties, making the material particularly suitable for non-cooled infrared detection. Beyond this specific application, the broader significance of this material lies in its potential to address challenges in electronics, energy, and sensor technologies.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20565-20574"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178196","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":"One-pot synthesis, luminescence properties and interfacial energy transfer of CaCO3:Eu3+@SiO2:Tb3+ phosphor","authors":"Yihong Liu,&nbsp;Mingjuan Zhou,&nbsp;Xiankai Wang,&nbsp;Jingyi Jing,&nbsp;Xiaoquan Ye,&nbsp;Tianzheng Duan,&nbsp;Haifeng Zou,&nbsp;Ye Sheng","doi":"10.1016/j.ceramint.2025.02.202","DOIUrl":"10.1016/j.ceramint.2025.02.202","url":null,"abstract":"<div><div>The core-shell structure plays a significant role in the field of interfacial energy transfer. In this study, we designed and synthesized a series of Eu³⁺ and Tb³⁺ co-doped CaCO₃@SiO₂ core-shell spheres using one-pot method. The phase composition, morphology of the samples, and core-shell structure were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The phosphors synthesized in one pot were further optimized for luminescence enhancement to investigate the energy migration of Eu³⁺ and Tb³⁺, and the obtained results proved the effective interfacial energy transfer (IET) performance. Compared with CaCO₃:3%Eu³⁺,5%Tb³⁺@SiO₂ and CaCO₃@SiO₂:3%Eu³⁺,5%Tb³⁺, CaCO₃:3%Eu³⁺@SiO₂:5%Tb³⁺ sample exhibits the stronger luminous intensity and longer fluorescence lifetime. This work presents a feasible method for preparing core-shell luminescent materials by one pot method and offers a new case for fluorescence enhancement through IET in core-shell luminescent materials doped with rare earth elements.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20362-20370"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177860","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":"Structural, magnetic, dielectric, electrical, and ferroelectric properties of xLi0.2Ni0.2Mn0.4Fe2.1Al0.1O4+(1-x)Ba0.7Sr0.3TiO3 composites for multifunctional applications","authors":"Sharmin Sultana Nipa ,&nbsp;Mithun Kumar Das ,&nbsp;Bablu Chandra Das ,&nbsp;Mashudur Rahaman ,&nbsp;Md Azizul Hoque ,&nbsp;Muhammad Shahriar Bashar","doi":"10.1016/j.ceramint.2025.02.164","DOIUrl":"10.1016/j.ceramint.2025.02.164","url":null,"abstract":"<div><div>This study investigated the structural, magnetic, dielectric, electrical, and ferroelectric properties of different <em>x</em>Li_0.2Ni_0.2Mn_0.4Fe_2.1Al_0.1O₄+(1-<em>x</em>)Ba_0.7Sr_0.3TiO₃ composites. The solid-state reaction process fabricates the composites. X-ray diffraction patterns confirmed the presence of spinel and perovskite structures in the composites without extra phases, indicating high-quality composite material. Increasing ferrite content enhances lattice constant while decreasing bulk and theoretical density. The ferrite phase increases the mean grain size, with the highest value of 0.64 <span><math><mrow><mi>μ</mi><mi>m</mi></mrow></math></span> for the <em>x</em> = 1.00 sample. The BET isotherms were recorded using N₂ adsorption-desorption. BET surface area and average pore diameter values were obtained in the range of 13.70–19.23 m²/g and 59.53–65.04 Å respectively. High specific surface area (19.23 m²/g) was obtained in the composite compared to both the ferroelectric and ferrite samples. The maximum real part of the initial permeability of 64.55 is found for the <em>x</em> = 1.00 sample. Besides, the relative quality factor was evident to increase, while the magnetic loss declined with the ferrite phase. The magnetic saturation of composites increased with the ferrite phase, and the highest value (=51.65) is evident for the <em>x</em> = 1.00 sample. The law of approach to saturation analysis revealed that the investigated samples exhibit a multi-domain structure. The <em>x</em> = 0.50 sample has the highest dielectric constant of 8.6 <span><math><mrow><mo>×</mo></mrow></math></span> 10³ at 20 Hz and shows outstanding frequency stability. The spreading parameter reduces above <em>x</em> = 0.20 as ferrite content increases, indicating a decrease in frequency dispersion behavior. The small polaron hopping mechanism is responsible for the ac conductivity. The Nyquist plot was used to measure complex impedance, confirming that grain and grain boundary resistance dominated for all samples. The <em>x</em> = 0.50 composite had a higher typical saturation polarization of 0.88 μC/cm², but lossy behavior increased further. The remarkable unique property magnetoelectric effect exists in the composites, as evidenced by the presence of both M-H and P-E properties at the same temperature.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 19986-20005"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177965","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":"Microstructure and thermal shock resistance of Ba(Mg1/3Ta2/3)O3 coatings prepared by suspension plasma spraying","authors":"Wangxin Zhao ,&nbsp;Li Li ,&nbsp;Yupeng Cao ,&nbsp;Xinye Ma ,&nbsp;Jiazhi Wu ,&nbsp;Yanzhe Ji ,&nbsp;Xianjin Ning ,&nbsp;Quansheng Wang ,&nbsp;Zhiqiang Li","doi":"10.1016/j.ceramint.2025.02.189","DOIUrl":"10.1016/j.ceramint.2025.02.189","url":null,"abstract":"<div><div>To evaluate the feasibility of suspension plasma spraying (SPS) in enhancing the performance of thermal barrier coatings (TBCs), Ba(Mg_1/3Ta_2/3)O₃ (BMT) coating, a potential candidate ceramic coating material for TBCs, was prepared using SPS. The microstructure, phase composition, and thermal shock resistance of the coatings were characterized. The results indicate that SPS can deposit BMT coatings with a distinct columnar-like structure, significantly different from those prepared by atmospheric plasma spraying (APS). During water-quenching thermal shock tests from room temperature to 1150 °C, the double-ceramic-layer coatings composed of SPS-deposited BMT and APS-deposited YSZ endured up to 67 cycles, seven times more than BMT-YSZ coatings prepared by APS under identical conditions. This improvement is attributed to the columnar-like structure of SPS-deposited BMT coatings, which offers higher strain tolerance and effectively inhibits crack propagation, delaying coating spalling. The coating failure is primarily attributed to impurity phase formation in the BMT coating, its relatively low fracture toughness, and the growth stresses of the thermally grown oxides (TGO).</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20239-20246"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177970","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":"Preparation, microstructure, and mechanical properties of ultrafine-grained WC-Cr2(C,N)-Co cemented carbides","authors":"Luhao Yang ,&nbsp;Shiqing Ma ,&nbsp;Zhengwei Xue ,&nbsp;Shangxin Li ,&nbsp;Zhuang Cheng ,&nbsp;Yuan Su ,&nbsp;Lianhai Hu ,&nbsp;Jinwen Ye","doi":"10.1016/j.ceramint.2025.02.194","DOIUrl":"10.1016/j.ceramint.2025.02.194","url":null,"abstract":"<div><div>The ultrafine-grained cemented carbide was obtained through spark plasma sintering of WC-Cr₂(C,N)-Co nanocomposite powders. The densification mechanism, microstructure, and mechanical properties of the cemented carbide under different sintering temperatures and holding times were investigated. As the sintering temperature increases, the grain size undergoes a gradual increase through the merging of adjacent small WC grains. There is an initial increase, followed by a gradual decrease, in fracture toughness, and a continuous increase in hardness. Cr₂(C,N) enhances the fracture toughness of cemented carbide. WC-Cr₂(C,N)-Co cemented carbide demonstrates excellent mechanical properties, with a grain size of ∼0.445 μm, a hardness of 1842 HV₃₀, and a fracture toughness of 11.41 MPa m^1/2, achieved through sintering at 1200 °C for 5 min. This study provides a novel approach and strategy for the preparation of high-performance cemented carbide.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20290-20302"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177983","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":"Thermally conducting polyaniline reinforced expanded graphite/ TiO2/ BaFe12O19 nanocomposites: Electromagnetic shielding performance in Ku-frequency band","authors":"Ritu Chahal ,&nbsp;Sanket Malik ,&nbsp;Sajjan Dahiya ,&nbsp;Rajesh Punia ,&nbsp;A.S. Maan ,&nbsp;I.M. Ashraf ,&nbsp;Mohd Shkir ,&nbsp;Kuldeep Singh ,&nbsp;Anil Ohlan","doi":"10.1016/j.ceramint.2025.02.196","DOIUrl":"10.1016/j.ceramint.2025.02.196","url":null,"abstract":"<div><div>To create a conductive composite that can be utilized for electromagnetic (EM) shielding, barium ferrite (BaF), TiO₂ and expanded graphite (EG) have been incorporated into the polyaniline matrix. Polyaniline/Expanded graphite/TiO₂/BaFe₁₂O₁₉ (PGTB) nanocomposites were obtained by <em>insitu</em> oxidative polymerization method wherein ammonium persulfate [(NH₄)₂S₂O₈] was employed as an oxidant and dodecyl benzene sulfonic acid (DBSA) as a surfactant/dopant. Insitu synthesis results in the growth of polyaniline chains on their constituents, which have both conducting and magnetic properties required for efficient shielding or absorbing material. The effect of titanium oxide and BaFe₁₂O₁₉ in different nanocomposites has been investigated, and the findings reveal that the electrical, thermal and magnetic behavior of synthesized PGTB nanocomposites depends on their composition. The EM shielding capabilities of every PGTB nanocomposite at different barium ferrite compositions excelled over those of PG21 and PGT212 nanocomposites. With a strong affinity for microwave absorption along with a thermal conductivity of 1.73 W/m K, the PGTB2124 nanocomposite sample has attained a SE_A value of around 27.39 dB (99.97 % attenuation) at 15 GHz. The effective SE due to absorption value is improved with the increase in the concentration of BaFe₁₂O₁₉ in the nanocomposite, leading to better impedance matching and attenuation via dielectric and magnetic losses. Thus, the development of thermally conducting quaternary nanocomposites has potential applications in EM wave shielding and absorption.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20303-20315"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177984","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":"Highly sensitive and selective detection of ppb-level acetone sensor using WO3/Au/SnO2 ternary composite gas sensor","authors":"Xiaojie Zhu ,&nbsp;Oluwafunmilola Ola ,&nbsp;Cong Li ,&nbsp;Weixiang Gao ,&nbsp;Zhipeng Wang ,&nbsp;Changqian Dai ,&nbsp;Yingchang Jiang ,&nbsp;Shibin Sun ,&nbsp;Xueting Chang","doi":"10.1016/j.ceramint.2025.02.173","DOIUrl":"10.1016/j.ceramint.2025.02.173","url":null,"abstract":"<div><div>Developing acetone sensors with high sensitivity and selectivity at ppb level is critical for medical diagnostics and environmental monitoring while facing serious challenges. In this work, we presented a ppb-level acetone sensor based on a WO₃/Au/SnO₂ ternary composite film with a sandwich structure that was obtained by combined methods of radio-frequency (RF) magnetron sputtering and ion beam sputtering. The structural and compositional characteristics of the WO₃/Au/SnO₂ composite film were analyzed by electron microscopy and X-ray photoelectron spectroscopy. The WO₃/Au/SnO₂ composite sensor possessed high response (28.9–50 ppm), low optimum working temperature (200 °C), fast response/recovery time (5.5/10.5 s), ultralow detection limit (170 ppb), good repeatability, and ideal long-term stability. The excellent gas-sensing performance of WO₃/Au/SnO₂ composite sensor could be mainly attributed to the construction of the heterostructures between different components and the chemical sensitization effect of the noble metal Au interlayer.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20094-20102"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178067","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}