Pub Date : 2025-04-01DOI: 10.1016/j.ceramint.2024.08.303
Yang Wang , Junting Li , Yexin Li , Yiqin Huang , Junyu Bin , Chen Xiao , Yangyang Lu , Lei Chen , Jingxiang Xu , Yixin Su , Pengfei Shi , Linmao Qian
As the promising thermal material for the hot-end components of the next-generation advanced gas turbine engines, the operation of SiC is threatened by high-temperature water corrosion accompanied by external stress. By using reactive molecular dynamics, the influence of external stress on the high-temperature water corrosion behavior of SiC material was investigated in this study. It was found that the water corrosion behaviors of SiC at 1000 K and 2000 K were quite different: At 1000 K, SiC slabs under tensile stress exhibited more severe corrosion, as evidenced by a greater number of atoms lost. In contrast, at 2000 K, the volatilization of Si–O–Si group diminished with the increase in external stress, resulting in a reduced loss of silicon atoms. Moreover, the atomic insights indicated that the greater number of bond bridges between the Si–O–Si group and tensile SiC slab led to the more stable existence of the Si–O–Si group as well as less loss of silicon atoms. This study not only could help to understand the influence of the slab stress on the high-temperature water corrosion of SiC materials but also contribute to the design of SiC hot end components.
{"title":"External stress switching water corrosion behavior of SiC","authors":"Yang Wang , Junting Li , Yexin Li , Yiqin Huang , Junyu Bin , Chen Xiao , Yangyang Lu , Lei Chen , Jingxiang Xu , Yixin Su , Pengfei Shi , Linmao Qian","doi":"10.1016/j.ceramint.2024.08.303","DOIUrl":"10.1016/j.ceramint.2024.08.303","url":null,"abstract":"<div><div>As the promising thermal material for the hot-end components of the next-generation advanced gas turbine engines, the operation of SiC is threatened by high-temperature water corrosion accompanied by external stress. By using reactive molecular dynamics, the influence of external stress on the high-temperature water corrosion behavior of SiC material was investigated in this study. It was found that the water corrosion behaviors of SiC at 1000 K and 2000 K were quite different: At 1000 K, SiC slabs under tensile stress exhibited more severe corrosion, as evidenced by a greater number of atoms lost. In contrast, at 2000 K, the volatilization of Si–O–Si group diminished with the increase in external stress, resulting in a reduced loss of silicon atoms. Moreover, the atomic insights indicated that the greater number of bond bridges between the Si–O–Si group and tensile SiC slab led to the more stable existence of the Si–O–Si group as well as less loss of silicon atoms. This study not only could help to understand the influence of the slab stress on the high-temperature water corrosion of SiC materials but also contribute to the design of SiC hot end components.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12323-12329"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814773","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}
Pub Date : 2025-04-01DOI: 10.1016/j.ceramint.2025.01.132
Vindhya P S , Sandhya Suresh , Kavitha V T
In healthcare facilities, the rapid emergence of multidrug-resistant pathogenic bacteria necessitates the development of novel strategies to control or prevent their spread. Hence, current research focuses on the fabrication of pure and Ni-doped TiO2 nanoparticles via green approach by employing aqueous extracts of A.muricata leaves. XRD, FTIR, XPS, HR-TEM, SAED, SEM, EDX, UV–Visible and TGA are used to examine structural, morphological, optical and thermal properties of the obtained nanopowder. XRD pattern reveals all samples have crystalline nature and exhibit the tetragonal anatase phase of TiO2. XPS measurements confirm successful incorporation of Ni2+ ions into the TiO2 host lattice. FTIR spectra represent the presence of diverse functional groups along with their vibrational modes. The presence of Ti, O and Ni in EDAX spectra indicates sample purity. Moreover, TiO2 nanoparticles have a significant cytotoxic effect on L929 normal fibroblast cell lines. Additionally, the DPPH radical scavenging method is used to investigate antioxidant properties. Antimicrobial activity of nanoparticles was assessed against various microbial and fungal strains. Also, photocatalytic action was evaluated for methylene blue and congo red dye degradation in the presence aqueous solution under direct irradiation of sunlight. Thus, the findings suggest A. muricata leaf extract can be utilized for the design and fabrication of pure and Ni-doped TiO2 nanoparticles, as well as a variety of biomedical and photocatalytic applications.
{"title":"Evaluation of antimicrobial, cytotoxic, antioxidant and photocatalytic properties of Ni-doped TiO2 nanoparticles produced in green method","authors":"Vindhya P S , Sandhya Suresh , Kavitha V T","doi":"10.1016/j.ceramint.2025.01.132","DOIUrl":"10.1016/j.ceramint.2025.01.132","url":null,"abstract":"<div><div>In healthcare facilities, the rapid emergence of multidrug-resistant pathogenic bacteria necessitates the development of novel strategies to control or prevent their spread. Hence, current research focuses on the fabrication of pure and Ni-doped TiO<sub>2</sub> nanoparticles via green approach by employing aqueous extracts of <em>A.muricata</em> leaves. XRD, FTIR, XPS, HR-TEM, SAED, SEM, EDX, UV–Visible and TGA are used to examine structural, morphological, optical and thermal properties of the obtained nanopowder. XRD pattern reveals all samples have crystalline nature and exhibit the tetragonal anatase phase of TiO<sub>2</sub>. XPS measurements confirm successful incorporation of Ni<sup>2+</sup> ions into the TiO<sub>2</sub> host lattice. FTIR spectra represent the presence of diverse functional groups along with their vibrational modes. The presence of Ti, O and Ni in EDAX spectra indicates sample purity. Moreover, TiO<sub>2</sub> nanoparticles have a significant cytotoxic effect on L929 normal fibroblast cell lines. Additionally, the DPPH radical scavenging method is used to investigate antioxidant properties. Antimicrobial activity of nanoparticles was assessed against various microbial and fungal strains. Also, photocatalytic action was evaluated for methylene blue and congo red dye degradation in the presence aqueous solution under direct irradiation of sunlight. Thus, the findings suggest <em>A. muricata</em> leaf extract can be utilized for the design and fabrication of pure and Ni-doped TiO<sub>2</sub> nanoparticles, as well as a variety of biomedical and photocatalytic applications.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12901-12917"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814784","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}
A computational screening and experimental fabrication of metallized layer was developed to improve the interfacial binding strength of Cu/Si3N4 system in this work. The suitable metallized layer was computational screened based on the melting point, coefficient of thermal expansion, the solid solubility with Cu metal and the work of adhesion of metal/Si3N4 interface sequentially. Then, the Si3N4 copper-clad laminate (Si3N4 CCL) with Cu/metallized layer/Si3N4 structure was fabricated and the corresponding mechanical and electrical performances were further tested and discussed. The results show that Ni was the most suitable metallized layer considering the highest work of adhesion with Si3N4 ceramic compared with other promising metals. The sintered Ni layer with suitable screen-printing passes shows a uniform porous morphology, characterized by evenly distributed pore sizes that contribute to its overall structural integrity. And Ni layer exhibits a defect-free interface with the Si3N4 substrate, ensuring strong interfacial adhesion. The molten Cu presents planar spreading and vertical infiltration state on/in the sintered Ni layer in the subsequent Cu coating process, forming a dense metallized layer coupled with the typical equiaxed grain under the condition of suitable Cu-sheet mass. However, the over accumulation of Cu-rich phase at the interface derived from the excessive Cu-sheet mass can deteriorate the interfacial binding strength between the metal and Si3N4. Moreover, the fabricated Si3N4 CCL with a defect-free metal layer and interface structure presents excellent interfacial binding and surface conductivity, which can facilitate the vertical heat conduction across the interface and planar electron transport in the actual application. This study provides a new strategy for designing and fabricating the Si3N4 CCL.
{"title":"Theoretical screening and experimental fabrication of metallized layer for enhanced Cu wetting and adhesion on Si3N4 substrate","authors":"Zhang Xiangzhao, Zhou Yansheng, Zhang Yinuo, Chen Kerou, Liu Guiwu, Qiao Guanjun","doi":"10.1016/j.ceramint.2025.01.137","DOIUrl":"10.1016/j.ceramint.2025.01.137","url":null,"abstract":"<div><div>A computational screening and experimental fabrication of metallized layer was developed to improve the interfacial binding strength of Cu/Si<sub>3</sub>N<sub>4</sub> system in this work. The suitable metallized layer was computational screened based on the melting point, coefficient of thermal expansion, the solid solubility with Cu metal and the work of adhesion of metal/Si<sub>3</sub>N<sub>4</sub> interface sequentially. Then, the Si<sub>3</sub>N<sub>4</sub> copper-clad laminate (Si<sub>3</sub>N<sub>4</sub> CCL) with Cu/metallized layer/Si<sub>3</sub>N<sub>4</sub> structure was fabricated and the corresponding mechanical and electrical performances were further tested and discussed. The results show that Ni was the most suitable metallized layer considering the highest work of adhesion with Si<sub>3</sub>N<sub>4</sub> ceramic compared with other promising metals. The sintered Ni layer with suitable screen-printing passes shows a uniform porous morphology, characterized by evenly distributed pore sizes that contribute to its overall structural integrity. And Ni layer exhibits a defect-free interface with the Si<sub>3</sub>N<sub>4</sub> substrate, ensuring strong interfacial adhesion. The molten Cu presents planar spreading and vertical infiltration state on/in the sintered Ni layer in the subsequent Cu coating process, forming a dense metallized layer coupled with the typical equiaxed grain under the condition of suitable Cu-sheet mass. However, the over accumulation of Cu-rich phase at the interface derived from the excessive Cu-sheet mass can deteriorate the interfacial binding strength between the metal and Si<sub>3</sub>N<sub>4</sub>. Moreover, the fabricated Si<sub>3</sub>N<sub>4</sub> CCL with a defect-free metal layer and interface structure presents excellent interfacial binding and surface conductivity, which can facilitate the vertical heat conduction across the interface and planar electron transport in the actual application. This study provides a new strategy for designing and fabricating the Si<sub>3</sub>N<sub>4</sub> CCL.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12940-12950"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814788","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}
Pub Date : 2025-04-01DOI: 10.1016/j.ceramint.2024.12.564
Yi Fang , Lang Yang , Feng Rao , Yongming Zheng , Zhenguo Song
In this study, a low-cost porous geopolymers (PGP) were prepared using coal gangue and fly ash as raw materials to remove organic and heavy metal ions from wastewater. Various characterization techniques were employed to investigate the microstructure, morphology, pore size distribution, and surface functional groups of the porous geopolymers. The results indicate that the geopolymer exhibits a porous structure with hydroxyl groups on the surface after foaming. It was found that the porous geopolymers exhibited good adsorption capacity for Methylene Blue (MB), Cu(II), and Pb(II), with optimal adsorption capacities reaching 35.60 mg/g, 98.31 mg/g, and 85.67 mg/g, respectively. Fitting analysis suggests that the adsorption of MB, Cu(II), and Pb(II) is better described by the pseudo-second-order kinetic model and the Freundlich isotherm model. This indicates that the adsorption process is primarily chemical adsorption with multilayer adsorption. Competitive adsorption studies showed that Cu(II) could enhance the adsorption of MB, while Pb(II) had no significant effect on the adsorption of MB. Mechanistic studies revealed that the adsorption of MB by PGP is mainly through pore adsorption, electrostatic attraction, and hydrogen bond formation; whereas the adsorption of Cu(II) and Pb(II) is primarily through pore adsorption, electrostatic attraction, chemical reactions, and ion exchange. Recycling experiments demonstrated that after five repetitions, the adsorption capacity of PGP for the three pollutants remained above 60 %. These findings confirm the potential of porous geopolymers as adsorbents. Preliminary cost analysis shows that the adsorption cost of porous geopolymers is only 2.07 RMB/kg, making the geopolymer adsorbent economically advantageous and promising for application, especially considering its ability to utilize industrial solid waste.
{"title":"Adsorption behavior and mechanism of MB, Pb(II) and Cu(II) on porous geopolymers","authors":"Yi Fang , Lang Yang , Feng Rao , Yongming Zheng , Zhenguo Song","doi":"10.1016/j.ceramint.2024.12.564","DOIUrl":"10.1016/j.ceramint.2024.12.564","url":null,"abstract":"<div><div>In this study, a low-cost porous geopolymers (PGP) were prepared using coal gangue and fly ash as raw materials to remove organic and heavy metal ions from wastewater. Various characterization techniques were employed to investigate the microstructure, morphology, pore size distribution, and surface functional groups of the porous geopolymers. The results indicate that the geopolymer exhibits a porous structure with hydroxyl groups on the surface after foaming. It was found that the porous geopolymers exhibited good adsorption capacity for Methylene Blue (MB), Cu(II), and Pb(II), with optimal adsorption capacities reaching 35.60 mg/g, 98.31 mg/g, and 85.67 mg/g, respectively. Fitting analysis suggests that the adsorption of MB, Cu(II), and Pb(II) is better described by the pseudo-second-order kinetic model and the Freundlich isotherm model. This indicates that the adsorption process is primarily chemical adsorption with multilayer adsorption. Competitive adsorption studies showed that Cu(II) could enhance the adsorption of MB, while Pb(II) had no significant effect on the adsorption of MB. Mechanistic studies revealed that the adsorption of MB by PGP is mainly through pore adsorption, electrostatic attraction, and hydrogen bond formation; whereas the adsorption of Cu(II) and Pb(II) is primarily through pore adsorption, electrostatic attraction, chemical reactions, and ion exchange. Recycling experiments demonstrated that after five repetitions, the adsorption capacity of PGP for the three pollutants remained above 60 %. These findings confirm the potential of porous geopolymers as adsorbents. Preliminary cost analysis shows that the adsorption cost of porous geopolymers is only 2.07 RMB/kg, making the geopolymer adsorbent economically advantageous and promising for application, especially considering its ability to utilize industrial solid waste.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 9","pages":"Pages 11455-11466"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814861","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}
Pub Date : 2025-04-01DOI: 10.1016/j.ceramint.2025.01.117
Billur Deniz Karahan , Mehmet Feryat Gülcan
Transition metal oxides deliver high capacity but demonstrate a short cycle life when they are utilized as the anode active material in lithium ion batteries. This study offers an innovative solution to this problem by designing new composite materials in which, the modification of ternary transition metal oxide by carbon nanodots is utilized. Carbon nanodots isolated from Phoenix Dactylifera L. seeds are used by the authors for the first time to process hydrothermally produced zinc nickel ferrite powders. Subsequently, the combination is treated in a rotating evaporator to provide a uniform mix. Then, the finished product is heated to 600 °C in air. Once these powders (ternary metal oxide from hydrothermal (Sample 1) and C-dot modified ternary metal oxide (Sample 2)) are utilized as anode active materials, Sample 2 performs 1224.74 mAh g−1 at the 200th cycles upon the application of 0.1 mA g−1 current load in cycling. Sample 2 tested under various current loads ranging from 0.1 to 2 A g−1 it delivers 1229.08 mAh g−1 at the 270th cycle. It is thus demonstrated that through careful material selection and process design it is possible to synthesize sustainable anode active materials that could withstand high current loads, with long cycle life. It is anticipated that the encouraging outcomes of this study would open up new vistas to design sustainable composite anode active materials.
作为锂离子电池的负极活性材料，过渡金属氧化物具有高容量，但循环寿命短。本研究通过设计利用碳纳米点修饰三元过渡金属氧化物的新型复合材料，为解决这一问题提供了一种创新的方法。本文首次利用从凤凰种子中分离得到的碳纳米点制备水热法制备锌镍铁氧体粉末。随后，该混合物在旋转蒸发器中处理，以提供均匀的混合物。然后，成品在空气中加热到600°C。一旦这些粉末（来自水热的三元金属氧化物（样品1）和c点修饰的三元金属氧化物（样品2））被用作阳极活性材料，在循环中施加0.1 mA g−1电流负载时，样品2在第200次循环时表现为1224.74 mAh g−1。样品2在0.1至2 A g−1的各种电流负载下测试，在第270次循环时提供1229.08 mAh g−1。因此，通过仔细的材料选择和工艺设计，可以合成可持续的阳极活性材料，可以承受高电流负载，具有长循环寿命。预计本研究的成果将为设计可持续的复合阳极活性材料开辟新的前景。
{"title":"Boosting the electrochemical performance of ternary metal oxide anode in lithium-ion batteries via biomass-derived carbon nanodot modification","authors":"Billur Deniz Karahan , Mehmet Feryat Gülcan","doi":"10.1016/j.ceramint.2025.01.117","DOIUrl":"10.1016/j.ceramint.2025.01.117","url":null,"abstract":"<div><div>Transition metal oxides deliver high capacity but demonstrate a short cycle life when they are utilized as the anode active material in lithium ion batteries. This study offers an innovative solution to this problem by designing new composite materials in which, the modification of ternary transition metal oxide by carbon nanodots is utilized. Carbon nanodots isolated from <em>Phoenix Dactylifera L.</em> seeds are used by the authors for the first time to process hydrothermally produced zinc nickel ferrite powders. Subsequently, the combination is treated in a rotating evaporator to provide a uniform mix. Then, the finished product is heated to 600 °C in air. Once these powders (ternary metal oxide from hydrothermal (Sample 1) and C-dot modified ternary metal oxide (Sample 2)) are utilized as anode active materials, Sample 2 performs 1224.74 mAh g<sup>−1</sup> at the 200th cycles upon the application of 0.1 mA g<sup>−1</sup> current load in cycling. Sample 2 tested under various current loads ranging from 0.1 to 2 A g<sup>−1</sup> it delivers 1229.08 mAh g<sup>−1</sup> at the 270th cycle. It is thus demonstrated that through careful material selection and process design it is possible to synthesize sustainable anode active materials that could withstand high current loads, with long cycle life. It is anticipated that the encouraging outcomes of this study would open up new vistas to design sustainable composite anode active materials.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12785-12795"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814884","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}
Pub Date : 2025-04-01DOI: 10.1016/j.ceramint.2025.01.119
Bader Huwaimel , Kareem M. Younes , Amr S. Abouzied , Suliman A. Almahmoud , Sameer Alshehri , Zeinhom M. El-Bahy , Muhammad Farooq Warsi
Photocatalysis has emerged as the most promising protocol for the removal of persistent organic compounds from wastewater, but the shortcomings of photocatalysts, including low absorption in the visible part of the spectrum and fast recombination of separated charge carriers, limits their efficiency, and refute the practical applicability of the method. In the present Investigation, we have synthesized pure and cerium-doped microspheres of indium vanadate and loaded the doped microspheres on the 2D conductive matrix to develop the photocatalyst with high visible light absorption and significant charge separation. The fabricated photocatalysts (InVO4, Ce:InVO4, and Ce:InVO4/rGO) were characterized by various physical, thermal, electrical, electrochemical, and photoelectrochemical techniques. The cerium-doping and loading of microspheres onto the rGO matrix tunes the optical band gap (2.23 eV), increases the conductivity (1.02 × 10−2 Sm−1), reduces the charge (electron) transfer resistance (22.51 Ω), and enhances the photocurrent intensity of InVO4. The results manifest substantially improved absorption in the visible part of the spectrum with boosted charge carrier separation. The photocatalytic activity of the designed photocatalyst (Ce:InVO4/rGO) was estimated by degrading the Rhodamine B dye and ciprofloxacin drug. In 90 min, 95 % degradation of Rhodamine B and 88 % of ciprofloxacin were achieved. The kinetics study revealed the Pseudo-first-order reaction kinetics model for the degradation of both targeted pollutants. Scavenging studies were followed through to get insights into the catalytic active species produced and their relative participation in the degradation of Rhodamine B and ciprofloxacin. The catalyst was cycled to explore the stability for its practical applicability in removing persistent organic compounds.
{"title":"Cerium-doped indium vanadate microspheres loaded onto the 2D conductive matrix for boosted photodegradation of persistent organic pollutants","authors":"Bader Huwaimel , Kareem M. Younes , Amr S. Abouzied , Suliman A. Almahmoud , Sameer Alshehri , Zeinhom M. El-Bahy , Muhammad Farooq Warsi","doi":"10.1016/j.ceramint.2025.01.119","DOIUrl":"10.1016/j.ceramint.2025.01.119","url":null,"abstract":"<div><div>Photocatalysis has emerged as the most promising protocol for the removal of persistent organic compounds from wastewater, but the shortcomings of photocatalysts, including low absorption in the visible part of the spectrum and fast recombination of separated charge carriers, limits their efficiency, and refute the practical applicability of the method. In the present Investigation, we have synthesized pure and cerium-doped microspheres of indium vanadate and loaded the doped microspheres on the 2D conductive matrix to develop the photocatalyst with high visible light absorption and significant charge separation. The fabricated photocatalysts (InVO<sub>4</sub>, Ce:InVO<sub>4</sub>, and Ce:InVO<sub>4</sub>/rGO) were characterized by various physical, thermal, electrical, electrochemical, and photoelectrochemical techniques. The cerium-doping and loading of microspheres onto the rGO matrix tunes the optical band gap (2.23 eV), increases the conductivity (1.02 × 10<sup>−2</sup> Sm<sup>−1</sup>), reduces the charge (electron) transfer resistance (22.51 Ω), and enhances the photocurrent intensity of InVO<sub>4</sub>. The results manifest substantially improved absorption in the visible part of the spectrum with boosted charge carrier separation. The photocatalytic activity of the designed photocatalyst (Ce:InVO<sub>4</sub>/rGO) was estimated by degrading the Rhodamine B dye and ciprofloxacin drug. In 90 min, 95 % degradation of Rhodamine B and 88 % of ciprofloxacin were achieved. The kinetics study revealed the Pseudo-first-order reaction kinetics model for the degradation of both targeted pollutants. Scavenging studies were followed through to get insights into the catalytic active species produced and their relative participation in the degradation of Rhodamine B and ciprofloxacin. The catalyst was cycled to explore the stability for its practical applicability in removing persistent organic compounds.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12806-12817"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814887","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}
Pub Date : 2025-04-01DOI: 10.1016/j.ceramint.2025.01.085
Dejian Hou , Rui Huang , Jianhong Dong , Wenxing Zhang , Yi Zhang , Xueyao Li , Yiran Zhu , Zhenxu Lin , Huihong Lin , Lei Zhou
Cr3+ activated broadband near-infrared (NIR) phosphors exhibit tremendous potential for the phosphor-converted light-emitting diodes (pc-LEDs). Unfortunately, they still suffer from drawbacks such as low efficiency, and poor thermal stability. Herein, we have successfully developed a series of broadband NIR-emitting phosphors Y2CaAl4SiO12:Cr3+ with good luminescence performance. Under 435 nm light excitation, the Y2CaAl4SiO12:0.05Cr3+ phosphor shows broadband NIR emission in the 700–1100 nm range with a full width at half maximum (FWHM) of 159 nm. The significant impacts of Cr3+ doping concentration, fluxing agent, sintering atmosphere and host lattice composition were demonstrated in detail, some effective strategies which can enhance the luminescence performance of Cr3+ were successfully acquired. More excitingly, the optimized phosphor possesses outstanding thermal stability and satisfactory internal quantum efficiency of 96 %, the emission intensity can maintain as high as 89.8 % at 423 K of that at room temperature, surpassing most of reported Cr3+-doped NIR phosphors. The promising applications in night vision and biological tissue penetration were successfully validated for the NIR phosphor. The findings and simple strategies proposed in this research may pave a way for the development of high-quality broadband NIR emitting phosphors.
{"title":"Enhanced near-infrared luminescence and thermal stability in Cr3+-Activated Y2CaAl4SiO12 phosphors: Towards high-performance NIR light sources","authors":"Dejian Hou , Rui Huang , Jianhong Dong , Wenxing Zhang , Yi Zhang , Xueyao Li , Yiran Zhu , Zhenxu Lin , Huihong Lin , Lei Zhou","doi":"10.1016/j.ceramint.2025.01.085","DOIUrl":"10.1016/j.ceramint.2025.01.085","url":null,"abstract":"<div><div>Cr<sup>3+</sup> activated broadband near-infrared (NIR) phosphors exhibit tremendous potential for the phosphor-converted light-emitting diodes (pc-LEDs). Unfortunately, they still suffer from drawbacks such as low efficiency, and poor thermal stability. Herein, we have successfully developed a series of broadband NIR-emitting phosphors Y<sub>2</sub>CaAl<sub>4</sub>SiO<sub>12</sub>:Cr<sup>3+</sup> with good luminescence performance. Under 435 nm light excitation, the Y<sub>2</sub>CaAl<sub>4</sub>SiO<sub>12</sub>:0.05Cr<sup>3+</sup> phosphor shows broadband NIR emission in the 700–1100 nm range with a full width at half maximum (FWHM) of 159 nm. The significant impacts of Cr<sup>3+</sup> doping concentration, fluxing agent, sintering atmosphere and host lattice composition were demonstrated in detail, some effective strategies which can enhance the luminescence performance of Cr<sup>3+</sup> were successfully acquired. More excitingly, the optimized phosphor possesses outstanding thermal stability and satisfactory internal quantum efficiency of 96 %, the emission intensity can maintain as high as 89.8 % at 423 K of that at room temperature, surpassing most of reported Cr<sup>3+</sup>-doped NIR phosphors. The promising applications in night vision and biological tissue penetration were successfully validated for the NIR phosphor. The findings and simple strategies proposed in this research may pave a way for the development of high-quality broadband NIR emitting phosphors.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12420-12427"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814935","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}
Pub Date : 2025-04-01DOI: 10.1016/j.ceramint.2025.01.148
Xi Chen , Nan Zhang , Lu Wang , Yuechan Li , Yujie Yan , Xiuxiu Li , An Xie , Dongya Sun , Jiajia Han
Flexible electrochromic devices (ECDs) have received much attention in application of the next-generation wearable smart window, display and energy storage system. Apart from electrochromic layer, the transparent conductive electrode as one of the important components is required to have the flexible ability as well. In this study, a flexible Al-doped ZnO (AZO) transparent electrode with Zn-Al-O interfaces on polyethylene terephthalate (PET) is prepared by the plasma assisted atomic layer deposition (PEALD) technology. The influence of doping ratio, temperature and other factors on the structure and optoelectronic properties in the doped ZnO film was investigated. The resulted Al-doped ZnO electrode achieved high transmittance of 91 % and low resistivity of 6.6 × 10−3 Ω cm under the 200 °C and a doping ratio RZnO:Zn-Al-O with 14:1 due to increased electrons concentration supported by the partial states density states (PDOS). In addition, a tungsten oxide (WO3) layer was successfully deposited on a pre prepared AZO transparent electrode, forming a PET/AZO/WO3 composite material to fabricate an electrochromic device. A distinct change in color from transparent to a deep blue hue was observed with a high modulation range of 53 % and a coloring efficiency of 46.7 cm2 C−1 under the 550 nm. Finally, the flexible AZO transparent electrode obtained about 95 % of initial value after 100 bending cycles and showed high mechanical robustness. All results demonstrate the PEALD-deposited Al-doped ZnO films have great potential for high-performance and flexible transparent electrode.
{"title":"Atomic Layer-deposited flexible ZnO transparent electrodes with Zn-Al-O interface for electrochromic devices","authors":"Xi Chen , Nan Zhang , Lu Wang , Yuechan Li , Yujie Yan , Xiuxiu Li , An Xie , Dongya Sun , Jiajia Han","doi":"10.1016/j.ceramint.2025.01.148","DOIUrl":"10.1016/j.ceramint.2025.01.148","url":null,"abstract":"<div><div>Flexible electrochromic devices (ECDs) have received much attention in application of the next-generation wearable smart window, display and energy storage system. Apart from electrochromic layer, the transparent conductive electrode as one of the important components is required to have the flexible ability as well. In this study, a flexible Al-doped ZnO (AZO) transparent electrode with Zn-Al-O interfaces on polyethylene terephthalate (PET) is prepared by the plasma assisted atomic layer deposition (PEALD) technology. The influence of doping ratio, temperature and other factors on the structure and optoelectronic properties in the doped ZnO film was investigated. The resulted Al-doped ZnO electrode achieved high transmittance of 91 % and low resistivity of 6.6 × 10<sup>−3</sup> Ω cm under the 200 °C and a doping ratio R<sub>ZnO:Zn-Al-O</sub> with 14:1 due to increased electrons concentration supported by the partial states density states (PDOS). In addition, a tungsten oxide (WO<sub>3</sub>) layer was successfully deposited on a pre prepared AZO transparent electrode, forming a PET/AZO/WO<sub>3</sub> composite material to fabricate an electrochromic device. A distinct change in color from transparent to a deep blue hue was observed with a high modulation range of 53 % and a coloring efficiency of 46.7 cm<sup>2</sup> C<sup>−1</sup> under the 550 nm. Finally, the flexible AZO transparent electrode obtained about 95 % of initial value after 100 bending cycles and showed high mechanical robustness. All results demonstrate the PEALD-deposited Al-doped ZnO films have great potential for high-performance and flexible transparent electrode.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 13018-13027"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814956","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}
Pub Date : 2025-04-01DOI: 10.1016/j.ceramint.2025.01.114
Bachu Srikanth, Vankudothu Nagendar, M. Sreenath Reddy, Ch Gopal Reddy, P. Yadagiri Reddy
W-type hexaferrites with chemical composition SrNi2-xCoxFe16O27 (where x = 0.0, 0.5, 1.0, and 1.5) were prepared using the solid-state method by sintering at 1300 °C. The samples were characterized with X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), and Raman spectroscopy and studied for magnetic, room-temperature, and low-temperature Mössbauer and dielectric measurements. The Rietveld-refined XRD data confirms single-phase material with a hexagonal structure having a P63/mmc space group. The lattice parameters increased with increasing cobalt concentration. The elemental analysis and the oxidation state of the elements present in the samples were examined with XPS. Raman spectroscopic analysis shows shifting of peaks with the substitution of the cobalt at the nickel site. Magnetization data confirms the soft ferrimagnetic nature of the compounds. It is indicated that, saturation magnetization increases with the increasing of Co content. The isomer shift data from Mössbauer measurements suggest that, the Fe ions are present in +3 state. The conduction-hopping mechanism explains the notable dispersion in dielectric constant that is linked to loss peaks in temperature-dependent dielectric data.
{"title":"Influence of cobalt substitution at Ni site: On structural, magnetic, electrical and Mössbauer studies of SrNi2Fe16O27 W-type hexaferrites","authors":"Bachu Srikanth, Vankudothu Nagendar, M. Sreenath Reddy, Ch Gopal Reddy, P. Yadagiri Reddy","doi":"10.1016/j.ceramint.2025.01.114","DOIUrl":"10.1016/j.ceramint.2025.01.114","url":null,"abstract":"<div><div>W-type hexaferrites with chemical composition SrNi<sub>2-x</sub>Co<sub>x</sub>Fe<sub>16</sub>O<sub>27</sub> (where x = 0.0, 0.5, 1.0, and 1.5) were prepared using the solid-state method by sintering at 1300 °C. The samples were characterized with X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), and Raman spectroscopy and studied for magnetic, room-temperature, and low-temperature Mössbauer and dielectric measurements. The Rietveld-refined XRD data confirms single-phase material with a hexagonal structure having a <em>P</em>6<sub>3</sub>/<em>mmc</em> space group. The lattice parameters increased with increasing cobalt concentration. The elemental analysis and the oxidation state of the elements present in the samples were examined with XPS. Raman spectroscopic analysis shows shifting of peaks with the substitution of the cobalt at the nickel site. Magnetization data confirms the soft ferrimagnetic nature of the compounds. It is indicated that, saturation magnetization increases with the increasing of Co content. The isomer shift data from Mössbauer measurements suggest that, the Fe ions are present in +3 state. The conduction-hopping mechanism explains the notable dispersion in dielectric constant that is linked to loss peaks in temperature-dependent dielectric data.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12748-12757"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815093","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}
Pub Date : 2025-04-01DOI: 10.1016/j.ceramint.2024.12.536
I Kadek Hariscandra Dinatha , Arian Hermawan Diputra , Juliasih Partini , Hevi Wihadmadyatami , Yusril Yusuf
Bone is a complex mineralized tissue composed of various organic (proteins and cells) and inorganic (hydroxyapatite; HA, Na+, Mg2+, K+, CO32−, F−, Cl−, P2O74−, H2O) minerals, which often have some issue or defect due to various causes. Recently, artificial bone has been attempted to be developed as a safer method compared to autograft and allograft methods, which potentially cause infectious diseases. However, the method for constructing a 3 dimensional (3D) scaffold from pure bioceramics with a high level of precision remains challenging. In addition, calcium phosphate bioceramics, like commercial HA (HA-C), does not have impurities of inorganic ions that can increase its bioactivity response. We successfully developed 3D HA bioceramics material derived from sand lobster shell (HA-SLS) waste, which contains the magnesium (Mg) natural trace element in the form of β-tricalcium-magnesium phosphate (β-TCMP) to improve the bioactivity cell osteogenic differentiation of HA-C. The 3D scaffold is constructed using additive manufacturing with a digital light processing (DLP) method, which produces pore sizes precisely because the pore size affects the mechanical compressive strength. 3D HA-SLS scaffold derived from biogenic waste has stronger sustained degradability and released ions compared to the 3D HA-C scaffold. The released Ca2+, P, and Mg2+ ions from HA-SLS can facilitate the material's bioactivity response when the materials are immersed in a simulated body fluid (SBF) solution, increasing the level of cell osteogenic differentiation, which is marked with alkaline phosphate, alizarin red, and gene expression bone-related. Additionally, the 3D HA-SLS scaffold material can support the cell adhesion and proliferation of bone marrow mesenchymal stem cells (BMSCs), so it has the potential to promote bone growth.
{"title":"3D pure bioceramic scaffold from biogenic sand lobster (Panulirus homarus) shell waste for enhancing in vitro cell osteogenic differentiation","authors":"I Kadek Hariscandra Dinatha , Arian Hermawan Diputra , Juliasih Partini , Hevi Wihadmadyatami , Yusril Yusuf","doi":"10.1016/j.ceramint.2024.12.536","DOIUrl":"10.1016/j.ceramint.2024.12.536","url":null,"abstract":"<div><div>Bone is a complex mineralized tissue composed of various organic (proteins and cells) and inorganic (hydroxyapatite; HA, Na<sup>+</sup>, Mg<sup>2+</sup>, K<sup>+</sup>, CO<sub>3</sub><sup>2−</sup>, F<sup>−</sup>, Cl<sup>−</sup>, P<sub>2</sub>O<sub>7</sub><sup>4−</sup>, H<sub>2</sub>O) minerals, which often have some issue or defect due to various causes. Recently, artificial bone has been attempted to be developed as a safer method compared to autograft and allograft methods, which potentially cause infectious diseases. However, the method for constructing a 3 dimensional (3D) scaffold from pure bioceramics with a high level of precision remains challenging. In addition, calcium phosphate bioceramics, like commercial HA (HA-C), does not have impurities of inorganic ions that can increase its bioactivity response. We successfully developed 3D HA bioceramics material derived from sand lobster shell (HA-SLS) waste, which contains the magnesium (Mg) natural trace element in the form of β-tricalcium-magnesium phosphate (β-TCMP) to improve the bioactivity cell osteogenic differentiation of HA-C. The 3D scaffold is constructed using additive manufacturing with a digital light processing (DLP) method, which produces pore sizes precisely because the pore size affects the mechanical compressive strength. 3D HA-SLS scaffold derived from biogenic waste has stronger sustained degradability and released ions compared to the 3D HA-C scaffold. The released Ca<sup>2+</sup>, P, and Mg<sup>2+</sup> ions from HA-SLS can facilitate the material's bioactivity response when the materials are immersed in a simulated body fluid (SBF) solution, increasing the level of cell osteogenic differentiation, which is marked with alkaline phosphate, alizarin red, and gene expression bone-related. Additionally, the 3D HA-SLS scaffold material can support the cell adhesion and proliferation of bone marrow mesenchymal stem cells (BMSCs), so it has the potential to promote bone growth.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 9","pages":"Pages 11188-11200"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815137","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}
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