Article
Materials Science, Ceramics
Anwar Hushur, Murli H. Manghnani, Quentin Williams
Summary: The sound velocities of Na2FeSi3O8.5 glass were measured up to 12 GPa using Brillouin spectroscopy. The Poisson's ratio, bulk, shear, and Young's moduli were calculated under different pressures. The shear and Young's moduli and Poisson's ratio exhibited a shift in response to compression at around 2.2 GPa, indicating a pressure-induced shear velocity minimum in the glass. Raman spectra were also obtained up to 6.5 GPa. A relationship between the magnitude of shear velocity depression and the ratio of network-modifying cations to network-forming cations was proposed, suggesting the potential for tailored pressure dependence of elastic velocities in silicate glasses.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Geochemistry & Geophysics
Benjamin J. A. Moulton, Lais D. Silva, Carsten Doerenkamp, Harold Lozano, Edgar D. Zanotto, Hellmut Eckert, Paulo S. Pizani
Summary: Raman and NMR spectroscopies have been used to study the polymerization of silicate glasses, with this study showing that the structural interpretation of 40BaO-60SiO(2) glass was robust by combining evidence from both techniques. The distribution of Q(n) and composition of the glass support the stoichiometry Ba0.66SiO2.66, indicating a consistent level of polymerization.
Article
Materials Science, Ceramics
David Sampaio, Rafaella B. Pena, Benjamin J. A. Moulton, Marcos Rezende, Deyvid do C. Silva, Ronaldo S. Silva, Thiago R. da Cunha, Valmor R. Mastelaro, Edgar D. Zanotto, Paulo S. Pizani
Summary: The doping of chromium in lead metasilicate glass was explored using Raman, UV-Vis, and Cr Kedge XANES spectroscopy. The results showed that Cr ions are mainly present as CrO42- complexes, with limited solubility up to about 1 mol% of Cr2O3. This low solubility suggests that Cr2O3 could be used as a potential nucleating agent for lead-silica based glass-ceramics.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Jaspreet Kaur, Paramvir Kaur, Isha Mudahar, K. Singh
Summary: The composition of glass with 40% SiO2, 40% B2O3, 10% V2O5, (10-x)% Fe2O3, and x% Sm2O3 (where x = 0, 2, 4, 6 mol%) was prepared using the melt-quench technique. Various experimental methods such as X-ray diffraction (XRD), Fourier transforms infrared (FTIR) spectroscopy, Raman spectroscopy, UV-visible spectroscopy, and vibrating sample magnetometer (VSM) were used to characterize the structural, optical, and magnetic properties of the as-prepared glasses. The addition of Sm2O3 increased the glass density nonlinearly, and the optical band gap was in the semiconducting range (2.2-2.6 eV). These glasses can potentially be used in hyperthermia treatment as thermoseeds.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
J. -M. Delaye, A. Le Gac, S. Macaluso, F. Angeli, F. Lodesani, T. Charpentier, S. Peuget
Summary: A set of SiO2-Al2O3-Na2O-CaO glasses with varying Si/Al and Na/Ca ratios was experimentally irradiated with Au4+ ions at 7.3MeV. Depending on the glass composition, the density could increase or decrease. Through simulations and experimental comparisons, a phenomenological density change model was proposed to explain the observations.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Geochemistry & Geophysics
Cong Tu, Zi-Yue Meng, Xiao-Ying Gao, Li Zhang
Summary: A method for determining the total dissolved water content and water speciation in silicate melts was presented based on hydrous rhyolitic glasses. The total water contents of the glasses were measured accurately through FTIR and TC/EA-MS, and both external and internal calibrations were established for quantitative analysis. The relative concentration of water speciation in the glasses was determined by decomposing the total water Raman bands into four Gaussians components. This work provides an accurate method to determine total water content and a potential tool to limit the relative concentration of water speciation dissolved in silicic glasses.
GEOSTANDARDS AND GEOANALYTICAL RESEARCH
(2023)
Article
Chemistry, Physical
Indrajeet Mandal, Saswata Chakraborty, K. Jayanthi, Manasi Ghosh, Krishna K. Dey, K. Annapurna, Jayanta Mukhopadhyay, Abhijit Das Sharma, Amarnath R. Allu
Summary: The present study investigates the factors affecting sodium-ion dynamics in glass-based Na-ion conducting materials by correlating structure and conductivity properties. The results reveal that structural modifications, Na-ion concentration, and the interaction between sodium and neighboring cations all influence the Na-ion dynamics.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Spectroscopy
Elliot J. Tay, Jonathan E. Barnsley, Daniel B. Thomas, Keith C. Gordon
Summary: Resonance Raman spectroscopy was used to identify and characterize psittacofulvins, showing different behaviors in red and yellow regions with Raman band wavenumber shifts. One yellow region exhibited similar characteristics to the red regions, suggesting the presence of psittacofulvins with greater conjugation.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Analytical
Yeran Bai, Zhongyue Guo, Fatima C. Pereira, Michael Wagner, Ji-Xin Cheng
Summary: A mid-infrared photothermal-fluorescence in situ hybridization (MIP-FISH) platform is developed for simultaneous identification and metabolic analysis of microbes with single-cell resolution and high throughput. By improving MIP imaging, isotopically labeled compounds incorporated into proteins of individual bacterial cells can be sensitively detected, while FISH labeling with rRNA-targeted probes enables the identification of the analyzed cells. In proof-of-concept experiments, MIP-FISH successfully discriminates and identifies labeled bacterial cells within a complex human gut microbiome sample based on the clear spectral red shift in the protein amide I region caused by incorporation of 13C atoms from 13C-labeled glucose. This study opens up new opportunities for single-cell structure-function analyses in microbiology.
ANALYTICAL CHEMISTRY
(2023)
Article
Construction & Building Technology
Bohong Zhang, Wenyu Liao, Hongyan Ma, Jie Huang
Summary: This study utilized a novel in situ fiber-optic Raman probe to continuously monitor the hydration progress of C3S and C2S pastes. The hydration processes and the main hydration products, C-S-H and CH, were successfully identified and continuously monitored in situ. The results were correlated with XRD and TGA results, demonstrating the reliability of the technology. The remote fiber-optic Raman probe shows superior signal-to-noise ratio and can be used for on-site monitoring and evaluation of concrete structures.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Multidisciplinary Sciences
Andreij C. Gadelha, Douglas A. A. Ohlberg, Cassiano Rabelo, Eliel G. S. Neto, Thiago L. Vasconcelos, Joao L. Campos, Jessica S. Lemos, Vinicius Ornelas, Daniel Miranda, Rafael Nadas, Fabiano C. Santana, Kenji Watanabe, Takashi Taniguchi, Benoit van Troeye, Michael Lamparski, Vincent Meunier, Viet-Hung Nguyen, Dawid Paszko, Jean-Christophe Charlier, Leonardo C. Campos, Luiz G. Cancado, Gilberto Medeiros-Ribeiro, Ado Jorio
Summary: The twisted bilayer graphene undergoes self-organized lattice reconstruction, resulting in the formation of a superlattice that modulates vibrational and electronic structures, leading to phenomena such as strong correlations and superconductivity. Although experimental techniques and theoretical models face challenges in observing and describing these effects, nano-Raman spectroscopy can localize some vibrational modes and provide insights into the effects of electron-phonon coupling on the material properties.
Article
Materials Science, Ceramics
Rafael Abel da Silveira, Leonardo de Lima Evaristo, Fabricio Luiz Faita, Silvio Buchner
Summary: This study investigated the effect of high pressure on the structural properties of the N1C2S3 composition in the Soda-lime-silicate system. The major crystalline phase observed was Combeite, regardless of the pressure used. Raman and Infrared spectroscopy indicated a possible CaO precipitation due to high pressure, with the phase transition showing stability up to 7.7 GPa pressure.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Ceramics
Justyna Sulowska, Piotr Jelen, Zbigniew Olejniczak, Magdalena Szumera
Summary: The study found that glasses from the SiO2-P2O5-K2O-MgO-SO3 system can contain various reduced forms of sulfur, with MAS NMR spectra indicating slight polymerization of the silico-oxygen and phospho-oxygen subnetworks.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Ceramics
A. Rahman, G. Mariotto, E. Cattaruzza, E. Trave, F. Gonella, A. Quaranta
Summary: The study investigates the modification of silica network structure and silver clustering process during external treatments in ion-exchanged silicate glasses. External treatments result in adjustments to the silica network microstructure, including changes in polymerizing units and appearance/disappearance of non-bridging oxygen centers.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
Yusi Peng, Chenglong Lin, Yanyan Li, Yong Gao, Jing Wang, Jun He, Zhengren Huang, Jianjun Liu, Xiaoying Luo, Yong Yang
Summary: A highly sensitive semiconductor-based SERS substrate has been developed in this study, which can accurately identify the infectiousness of SARS-CoV-2 virions in actual environments through molecular enrichment and chemical enhancement effects.
Article
Chemistry, Physical
Runliang Zhu, Yanping Zhu, Haiyang Xian, Lixia Yan, Haoyang Fu, Gangqiang Zhu, Yunfei Xi, Jianxi Zhu, Hongping He
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Chemistry, Physical
Gaofeng Wang, Elizabeth Graham, Shuilin Zheng, Jianxi Zhu, Runliang Zhu, Hongping He, Zhiming Sun, Ian D. R. Mackinnon, Yunfei Xi
Article
Construction & Building Technology
Sen Wang, Lloyd Gainey, Daniel Baxter, Xiaodong Wang, Ian D. R. Mackinnon, Yunfei Xi
Summary: The study on mineralogical transformation of clay material for brick manufacturing revealed that a slower ramp rate decreases onset temperature of reactions, while an increase in firing temperature significantly enhances compressive strength of brick buttons.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Review
Environmental Sciences
Ahmed Ashiq, Meththika Vithanage, Binoy Sarkar, Manish Kumar, Amit Bhatnagar, Eakalak Khan, Yunfei Xi, Yong Sik Ok
Summary: This review summarizes the adsorptive removal of Fluoroquinolones (FQ) from water and wastewater, detailing the influence of physicochemical parameters and adsorption mechanisms. It highlights the performance comparison of different adsorbents for FQ-type antibiotic removal, with graphene showing the highest performance. The review fills the gap in understanding the mechanisms for further improvement of FQ antibiotics adsorption performance.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Yixuan Yang, Runliang Zhu, Qingze Chen, Jieqi Xing, Lingya Ma, Qiuzhi He, Jian Fan, Yunfei Xi, Jianxi Zhu, Hongping He
Summary: The article presents a novel montmorillonite-based multifunctional adsorbent prepared through multiple methods, demonstrating high efficiency in removing both organic and inorganic contaminants from water, including hydrophobic organic pollutants, oxyanions, and heavy metal cations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Sen Wang, Lloyd Gainey, Xiaodong Wang, Ian D. R. Mackinnon, Yunfei Xi
Summary: The effects of adding palygorskite containing clay on the firing process and properties of brick buttons were studied. It was found that adding palygorskite improved the physical, mechanical, and thermal properties of the fired brick buttons, but its effect on vitrification was nonlinear and non-uniform. By controlling the addition ratio of palygorskite containing clay, the optimum compressive strength and thermal diffusivity can be achieved.
APPLIED CLAY SCIENCE
(2022)
Article
Environmental Sciences
Yanping Zhu, Qingru Xie, Runliang Zhu, Ying Lv, Yunfei Xi, Jianxi Zhu, Jian Fan
Summary: The study found that HTC with abundant carbon-centered persistent free radicals (PFRs) can directly reduce Fe(III) to Fe(II), thereby decreasing Fe(III) consumption of H2O2 and improving the utilization efficiency of H2O2. HTC with low graphitization degree containing more PFRs significantly enhances the Fenton catalytic activity of Fh.
Article
Construction & Building Technology
Sen Wang, Lloyd Gainey, Julius Marinelli, Brianna Deer, Xiaodong Wang, Ian D. R. Mackinnon, Yunfei Xi
Summary: The study investigates the effects of vermiculite on the production of bricks. Through various analysis methods, the thermal behavior, microstructure, physical, and compressive characteristics of brick samples with vermiculite have been studied. The results show that the addition of vermiculite changes the chemical composition and physical properties of the bricks, and it also affects the mechanical performance.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Editorial Material
Chemistry, Multidisciplinary
Aiqin Wang, Bin Mu, Giuseppe Lazzara, Yunfei Xi
FRONTIERS IN CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Amal Kanti Deb, Bhabananda Biswas, Mohammad Mahmudur Rahman, Yunfei Xi, Santosh Kumar Paul, Ravi Naidu
Summary: This study presents the ecofriendly synthesis of magnetite nanoparticles (Fe3O4 NPs)-immobilized halloysite nanotube (HNT) composite (Fe3O4@ HNT) for remediating arsenate [As(V)] from water. Fe3O4@HNT was easily separable by an external magnet and showed excellent efficiency in removing As(V) from groundwater. The material was also cost-effective, reusable, and biocompatible, making it a prospective composite for the sustainable eradication of arsenic and other metallic toxicants from wastewater.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Qinghe Liu, Sen Wang, Fei Han, Shupei Lv, Zairong Yan, Yunfei Xi, Jing Ouyang
Summary: Highly efficient three-dimensional kaolinite/MnO2-CuO catalysts were synthesized using a mild biomimetic strategy. The catalyst exhibited excellent stability and high CO conversion efficiency due to the unique structure of uniformly wrapped kaolinite flakes and ultrathin MnO2 nanosheets, as well as abundant oxygen vacancies.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Construction & Building Technology
Sen Wang, Lloyd Gainey, Ian D. R. Mackinnon, Yunfei Xi
Summary: This study investigates the effects of kaolinite defects on the properties of fired brick buttons. The results show that brick products prepared with high-defect kaolinite have lower water absorption and higher bulk density at higher firing temperatures. There is no significant difference in color, XRD phase composition, or compressive strength of brick buttons with different kaolinites fired at 850, 1050, and 1150 degrees C. However, high-defect kaolinite particles lead to lower porosity, finer particles, and higher compressive strength at 950 degrees C.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Construction & Building Technology
Sen Wang, Lloyd Gainey, Ian D. R. Mackinnon, Charlotte Allen, Yuantong Gu, Yunfei Xi
Summary: This review provides a comprehensive summary of the importance of clay minerals in brick production and their relationships with the properties of brick products. It covers the thermal behavior, physical properties, and mechanical properties of clay minerals. The current challenges and potential suggestions for brick production are also discussed, aiming to guide the design of industrial-scale brick production.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Environmental
Qinghe Liu, Meng Li, Sen Wang, Shupei Lv, Fei Han, Yunfei Xi, Zhou Cao, Jing Ouyang
Summary: This study successfully cultivated nano-sized three-dimensional cobalt-manganese nanoflowers on the surface of diatomite, with a unique structure and sufficient surface defect sites and oxygen vacancies, which endows it with high catalytic activity and shows good performance in the treatment of VOC gas pollutants.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Hanlin Chen, Gaoling Wei, Xiaoliang Liang, Peng Liu, Yunfei Xi, Jianxi Zhu
CATALYSIS SCIENCE & TECHNOLOGY
(2020)
Article
Chemistry, Analytical
Elena Naumovska, Gabriel Kofi Nzulu, Laura Mazzei, Arnaud Le Febvrier, Kristina Komander, Martin Magnuson, Max Wolff, Per Eklund, Maths Karlsson
Summary: Results from an infrared spectroscopy study on hydrated nanocrystalline films of BaZr1-xScxO3-x/2 with different Sc concentrations show variations in the O-H stretching bands, indicating different proton configurations. Higher Sc concentrations exhibit a distinct O-H stretching band, while lower Sc concentrations show a broader, weaker band.
VIBRATIONAL SPECTROSCOPY
(2024)