Article
Chemistry, Physical
Dongyu Lai, Zhonghua Yao, Wei You, Biao Gao, Qinghu Guo, Ping Lu, Amjad Ullah, Hua Hao, Minghe Cao, Hanxing Liu
Summary: Recently, NaNbO3-based ceramics with excellent energy storage performances and fast charge discharge characteristics have been studied. BaTiO3 modified 0.85NaNbO3-0.15Bi(Zn2/3Nb1/3)O3 ceramics were successfully fabricated using solid state synthesis. Compared to pure 0.85NN-0.15BZN ceramics, the modified ceramics exhibit higher discharge storage density and excellent temperature stability, broadening the scope of NaNbO3-based ceramics for energy storage applications.
JOURNAL OF MATERIOMICS
(2022)
Article
Physics, Applied
Aleksandar Stajcic, Ivana Stajcic, Vojislav V. Mitic, Chun-An Lu, Branislav Vlahovic, Dana Vasiljevic-Radovic
Summary: This research investigates the effect of N-2 and air atmospheres on the morphological and dielectric properties of modified BTO nanoparticles. It was found that the modified BTO had high dielectric constants in both atmospheres. Morphological analysis showed a connection between particle size, pore size distribution, and porosity. Image analysis data indicated that yttrium-based organometallic salt reduced oxygen vacancy generation in the N-2 atmosphere. DC bias sensitivity measurements showed that samples with higher dielectric constants were more sensitive to voltage change.
MODERN PHYSICS LETTERS B
(2022)
Article
Materials Science, Ceramics
Li-na Liu, Xiao-ming Chen, Jia-ping Ma, Jian-bo Lu, Han-li Lian, Wei Deng
Summary: (Bi0.5Na0.5)(0.94)Ba0.06TiO3 nanograined ferroelectric ceramics were successfully fabricated via a simple cold-sintering-assisted sintering method. The method involves two steps: cold-sintering and post-annealing. The cold-sintered samples with densities as high as 83.7% to 93.6% of the theoretical value were prepared by moistening the powders with de-ionized water followed by compressing under various pressures at 180 degrees C. Effects of cold-sintering time and pressure on densification and microstructure of the cold-sintered samples were studied. After being annealed, the relative densities of the post-annealed ceramics were all higher than 96%. The study provides a simple and efficient method for obtaining dense (Bi0.5Na0.5)(0.94)Ba0.06TiO3 nanograined ferroelectric ceramics at relatively low temperatures with excellent dielectric and ferroelectric properties.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Dengyong Zhang, Hua Hao, Yongsen Luo, Zhonghua Yao, Minghe Cao, Hanxing Liu
Summary: 0.2CT-0.8LST ceramics with orthogonal perovskite structure were fabricated by adding ZnO additives. The addition of ZnO improved the microwave dielectric properties of the ceramics. Increasing the dopant concentration led to lower dielectric constant and temperature co-efficient of resonance frequency, and higher Q x f values. Raman spectroscopy showed that narrower Raman scattering peaks corresponded to longer microwave energy propagation decay times and higher Q x f values. XPS analysis revealed that the addition of Zn2+ ions limited the reduction of Ti4+ cations.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Chen Wu, Xiaoming Qiu, Wenwei Ge, Changyi Liu, Hongwei Zhao, Luyao Chen, Zhaodong Liu, Liang Li, John G. Fisher
Summary: By co-doping A-site and B-site, NBST-xNG ceramics achieved enhanced energy storage performance with good temperature stability and potential applications.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Thomas Schulz, Andrea Knauer, Peter Schaaf, Joerg Toepfer
Summary: The study focused on optimizing alloy composition to improve high-temperature dielectric properties, and investigated the effects of excess bismuth and manganese doping on performance. The results showed that the addition of small amounts of manganese extended the low-loss temperature range, while excess bismuth limited the application temperature range.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Yuze Xue, Le Xin, Mingwei Zhang, Panpan Lyu, Luchao Ren, Jiwei Zhai
Summary: Double sintering effectively improves the performance of Ba0.5Sr0.5TiO3-ZnAl2O4 composite ceramics, resulting in higher density, more uniform grain size distribution, and reduced dielectric permittivity, oxygen vacancy content, and grain boundary resistance. The optimum dielectric tunability and Q value are 23.4% and 276, respectively. Double sintering is an effective strategy for adjusting the properties of composite ceramics.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Xi Wang, Shicheng Zhou, Kaiyang Liu, Shan Deng, Yaqi Xiao, Xiuli Chen, Huanfu Zhou
Summary: Extensive research has been conducted on microwave dielectric materials for their application in 5G and 6G communication technologies. This study broadened the sintering temperature range of MT-C ceramics using a composite of CeO2 and Mg2TiO4 ceramics, and stabilized their microwave dielectric performance. The prepared MT-C ceramics exhibited low loss and uniform density, making them suitable for industrial applications in the field of communication.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Yan Yu, Weijia Guo, Yichao Zhen, Zhenyong Cen, An Ji, Hao Wu, Shujian Liang, Shan Xiong, Xiaohui Wang
Summary: This study investigated the feasibility of sintering nonreducible 0.95MgTiO3-0.05CaTiO3 ceramics in a reducing atmosphere by adding MnO2. The results showed that the addition of 2.0 mol% MnO2 improved the dielectric properties of the ceramics, making them suitable for RF/microwave multilayer ceramic capacitor applications.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Xi Wu, Hongbo Liu, Jianguo Chen
Summary: By adding BiFeO3 in the Na0.5Bi0.5TiO3-SrTiO3 binary system, a ceramic material with near plateau dielectric response at high temperature and high electrical energy storage density was prepared, showing potential for high-temperature electronic applications.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Materials Science, Ceramics
Ilyas Savkliyildiz, Cigdem Okur, E. Koray Akdogan
Summary: During flash sintering, K0.5Na0.5NbO3 ceramic underwent rapid densification at high temperatures, maintaining small grain size without grain growth. The relative permittivity and dielectric loss showed relaxation behavior and phase transitions at different temperatures. The low-frequency dielectric relaxation is attributed to space charge near grain boundaries, which is a remnant of flash sintering.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Ruyi Han, Huimin Cao, Bo Li
Summary: The addition of H3BO3 to Ca2V2O7 ceramics significantly affects the microstructure, sintering mechanism, and microwave dielectric properties, resulting in reduced sintering temperature and improved performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Zengshan Yue, Fafa Wu, Xiaoqi Li, Yi Liu, Junhua Luo, Xitao Liu
Summary: In this study, centimeter-sized single crystals of a single-layer halide double perovskite (3-bromopropylaminium)(4)AgBiBr8 were successfully synthesized and shown to possess switchable dielectric properties and X-ray response.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Ceramics
Heqiang Chen, Zengbin Yin, Xiaohua Hao, Juntang Yuan
Summary: High temperature, negative temperature coefficient (NTC) thermosensitive ceramics xY2O3-(1-x)LaCrO3 (x = 0.4, 0.5, 0.6, 0.7) were prepared via spark plasma sintering. The electrical properties of the composite ceramics were found to be influenced by components, sintering temperature, and sintering pressure, with resistivities and temperature sensitivity coefficient increasing with higher Y2O3 content. Despite different sintering pressures, the composite NTC ceramics displayed similar electrical properties when sintered at 1500 degrees C.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Jie Zhang, Jia-Min Wu, Heng Liu, Wen Zheng, Chun-Sheng Ye, Shi-Feng Wen, Chun-Ze Yan, Yu-Sheng Shi
Summary: In this study, ZrSiO4-reinforced silica-based ceramic cores were prepared using laser powder bed fusion (LPBF) combined with vacuum infiltration (VI). The results showed that silica particles infiltrated into the pre-sintered bodies and promoted the generation of liquid phase during sintering, improving the material's density and grain connectivity. However, the dispersed ZrSiO4 grains increased the porosity but hindered crack propagation. The addition of 10 wt.% ZrSiO4 resulted in room-temperature flexural strength of 17.21 MPa and high-temperature flexural strength of 13.90 MPa. Therefore, the pre-sintering process greatly improved the mechanical properties of silica-based ceramic cores prepared by LPBF-VI technology.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Fisheries
Camila Oliveira Paranhos, Luanna do Carmo Neves, Walisson Souza e Silva, Ronald Kennedy Luz
Summary: The aim of this study was to evaluate the survival and water quality of Hypsolebias flagellatus during transportation with different salt concentrations, transport times, and previous diets. The results showed that the concentration of 4 g salt/L had the highest dissolved oxygen, and the survival rate was lower after 48 hours of transportation. Meanwhile, the type of diet also had an influence on water quality and dissolved oxygen.
JOURNAL OF APPLIED AQUACULTURE
(2023)
Article
Environmental Sciences
Cristiane De Oliveira, Carmem G. Renda, Ailton J. Moreira, Ernesto C. Pereira, Gian P. G. Freschi, Roberto Bertholdo
Summary: In recent decades, the growth of world agricultural activity has led to an increased presence of emerging pollutants like atrazine in water ecosystems. This study investigated the use of a graphitic-porous-carbon-based material with magnetic domains for the removal of atrazine from aqueous solutions. The material showed high adsorption efficiency for atrazine and its adsorption mechanisms were studied in detail.
ENVIRONMENTAL RESEARCH
(2023)
Article
Materials Science, Ceramics
Reginaldo Muccillo, Sabrina G. M. Carvalho, Rafael L. Denaldi, Eliana N. S. Muccillo
Summary: This study investigated the impregnation of molten Na2CO3-K2CO3 eutectic compositions into two types of ceramic materials, and evaluated the conductivity and carbonate ion permeation of the ceramics through various analyses. The research aimed to prepare dual-phase membranes for carbon dioxide separation and develop carbon dioxide sensors.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Chemistry, Physical
Mahmoud. S. Alkathy, Attaur Rahaman, Valmor R. Mastelaro, Fabio. L. Zabotto, Flavio Paulo Milton, J. A. Eiras
Summary: Double hysteretic loop ceramics with different polarization were achieved through B-site co-doping engineering. The sample co-doped with Mg2+ and Ni2+ exhibited higher polarization and considerable breakdown strength, resulting in a high energy storage density and efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Electrochemistry
Maria Joseita dos Santos Costa, Aline Estefany Brandao Lima, Ester Pamponet Ribeiro, Gilson dos Santos Costa, Elson Longo, Geraldo Eduardo da Luz, Laecio Santos Cavalcante, Reginaldo da Silva Santos
Summary: This paper discusses a facile method for preparing transition metal tungstate thin films and their remarkable photoelectrochemical properties. The films were deposited onto conductive fluorine-doped tin oxide (FTO) glass substrate. The results show that the films have crystalline structures and nanostructured materials. They also demonstrate indirect transitions and successful application as photoanodes in a photoelectrochemical cell under polychromatic irradiation. This work provides a comparative and comprehensive study on AWO(4) films and suggests their potential applications in water splitting reactions and other photoelectrocatalytic processes.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2023)
Article
Medicine, General & Internal
Rocio Palomo-Carrion, Caline Cristine De Araujo Ferreira Jesus, Camila Araujo Santos Santana, Raquel Lindquist, Roselene Alencar, Helena Romay-Barrero, Elena Contell-Gonzalo, Karolinne Souza Monteiro, Elena Pinero-Pinto, Egmar Longo
Summary: The participation of adolescents with cerebral palsy in the community is reduced, affecting their socialization, self-determination, and quality of life. Patient and Public Involvement (PPI) is crucial for successful interventions, especially when stakeholders are involved at all stages of the research. Co-design, involving researchers, patients, and families, is key to bringing necessary elements to the intervention design.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Chemistry, Physical
X. Gratens, B. de Abreu Silva, M. I. B. Bernardi, H. B. de Carvalho, A. Franco Jr, V. A. Chitta
Summary: The magnetization of Zn1-xCoxO (0.0055 <= x <= 0.073) nanoparticles was measured as a function of temperature and magnetic field. The magnetic properties were found to be derived from the antiferromagnetic spin clustering of Co2+ nearest-neighbors. The magnetization curves showed a deviation from the expected behavior below 6 K, which was successfully explained by a model based on single-ion anisotropy and randomly oriented nanoparticles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Polymer Science
Luiz R. M. Lima, Guilherme F. Caetano, Viviane O. Soares, Renivaldo J. Santos, Jose A. Malmonge, Michael J. Silva, Alexander L. Yarin
Summary: The objective of this study was to develop NR-based biocomposites containing BioS and/or BL0 particles to improve their tensile response, biocompatibility, and bioactivity for biomedical applications. Morphological, tensile, thermal, and biological tests were conducted to evaluate the influence of BioS and BL0 particles on the properties of the NR matrix. The results showed that the addition of BioS or BL0 particles enhanced the tensile strength and biological properties of the NR matrix, making it suitable for various biomedical applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Biomedical
Fabio Muchenski, Jenifer Pendiuk Goncalves, Yasmin Carla Ribeiro, Celia Regina Cavichiolo Franco, Carolina Camargo de Oliveira, Bruna Hilzendeger Marcon, Anny Robert, Lia Carolina Soares de Medeiros, Ronei Cardoso de Oliveira, Adilson Jesus Aparecido de Oliveira, Ney Mattoso
Summary: NiFeMo alloy nanoparticles were synthesized through co-precipitation with organic additives. The thermal evolution of the nanoparticles showed a significant increase in size and a crystalline structure similar to Ni3Fe phase. Magnetic property measurements indicated an increase in saturation magnetization and a decrease in remanence magnetization. Cell viability assays demonstrated that the nanoparticles were not cytotoxic up to a concentration of 0.4 μg/mL for both non-tumorigenic and tumor cells.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
(2023)
Article
Chemistry, Medicinal
Jeronimo F. Silva, Guilherme S. L. Fabris, Julio R. Sambrano, Anderson R. Albuquerque, Ary S. Maia
Summary: We introduce TOPISO3D Viewer, a user-friendly software that generates three-dimensional maps for analyzing descriptors based on QTAIM in periodic and nonperiodic systems. The software automates topological analysis calculations through the TOPOND package and generates a report to identify descriptor values at Bond Critical Points (BCP) and Critical Points of the Laplacian of the electron density (LCP), facilitating the classification of chemical interactions. The created maps can be stored as HTML files for future reference. The software's validity was confirmed through the study of various systems with 0-3D dimensions and the reevaluation of the topology of urea molecular crystal and its isolated molecule.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2023)
Article
Chemistry, Analytical
Rafael Aparecido Ciola Amoresi, Noemi Angelica Vieira Roza, Talita Mazon
Summary: In this study, a flexible electrochemical immunosensor based on CeO2 nanorods immobilized with CRP antibody was developed for the detection of cardiovascular disease biomarker. The CeO2 nanorods were obtained by microwave-assisted hydrothermal method and characterized by XRD, TEM, and XPS. The immunosensor's working electrode was prepared by dispersing the nanorods in organic solvent, functionalizing them with cystamine and glutaraldehyde, and then modifying them with CRP antibody. The developed immunosensor exhibited good reproducibility, a wide detection range, and a low detection limit, making it suitable for point-of-care applications.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Applied
Jordan Brizi Neris, Jose Arnaldo S. Costa, Guilherme Martins Grosseli, Floriatan Santos Costa, Caio Marcio Paranhos
Summary: This study aims to evaluate the transport properties and CBZ adsorption capacities of PES/mesoparticles-based MMMs in aqueous solutions with different physicochemical characteristics. The results show that PES/SH-MCM-41-based MMMs have the highest potential for CBZ adsorption. The multivariate design results indicate that contact time, initial CBZ concentration, and the amount of SH-MCM-41 incorporated in MMM significantly influence the adsorption capacity, while pH does not affect it. Water permeability tests show a correlation between the H2O permeability and the porosity of the synthesized membranes. PES/SH-MCM-41-based MMMs exhibit high porosity and good ability to remove CBZ from water, regardless of the pH of the aqueous solutions.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Biochemistry & Molecular Biology
Sabrina G. M. Carvalho, Eliana N. S. Muccillo, Reginaldo Muccillo
Summary: An experimental setup was designed and assembled to evaluate the permeation of gaseous species and collect electrochemical impedance spectroscopy data in disk-shaped ceramic membranes. The setup consisted of an alumina sample holder with thermocouple tips and platinum electrodes located close to both sides of the sample. Gas permeation through a ceramic membrane was monitored using mass flow controllers, a mass spectrometer, and an electrochemical impedance analyzer. Ceramic composite membranes were prepared with the infiltration of molten eutectic compositions of alkali salts into porous gadolinia-doped ceria for testing and data validation. Values of the alkali salt melting points and the permeation rates of carbon dioxide, in agreement with reported data, were successfully collected.
Article
Chemistry, Medicinal
Jeronimo F. Silva, Guilherme S. L. Fabris, Julio R. Sambrano, Anderson R. Albuquerque, Ary S. Maia
Summary: We introduce TOPISO3D Viewer, a user-friendly software that generates three-dimensional maps to analyze descriptors based on QTAIM applied in periodic and nonperiodic systems. The software automates topological analysis calculations through TOPOND package and generates a report to identify values of descriptors at BCP and LCP, facilitating chemical interaction classification. The generated maps can be stored as HTML files for later consultation. Several systems with 0-3D dimensions were studied to validate the software, and the topology of urea molecular crystal and its isolated molecule were revisited.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2023)
Article
Chemistry, Multidisciplinary
Mariana A. M. Rezende, Pedro P. Gromboni, Patricia G. Corradini, Almir Sales, Lucia H. Mascaro
Summary: The water treatment sludge (WTS) is a complex residue that consists of organic and inorganic matter in various states. Improper disposal of WTS can negatively impact the environment, causing a decrease in dissolved oxygen and an increase in metal concentration in watercourses. This study evaluated the effects of using WTS as a substitute for natural sand in cementitious composite on the physical and mechanical properties of concrete, as well as its corrosion resistance.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2023)