Article
Chemistry, Multidisciplinary
Sanya Khursheed, Rida Tehreem, Muhammad Awais, Dilshad Hussain, Muhammad Imran Malik, Young Sun Mok, Ghayas Uddin Siddiqui
Summary: The purpose of this study was to investigate the effect of photocatalytic degradation using nitrogen and tungsten co-doped titania (TiO2) nanoparticles, which are cost-effective and environmentally friendly. The synthesized nanoparticles were analyzed using various techniques, including spectroscopy, microscopy, and spectrometry. The co-doping of metal and non-metal enhanced the photocatalytic properties of the TiO2 nanoparticles, particularly in the visible region. This resulted in improved absorption of visible light and reduced recombination of electron-hole pairs, leading to accelerated photodegradation. The bandgap of the titania nanoparticles was reduced after efficient doping, enabling the photodegradation of malachite green under visible light illumination. The results of photocatalytic degradation were confirmed using spectroscopy and high-performance liquid chromatography coupled with mass spectrometry.
Article
Materials Science, Paper & Wood
Andrey Zdravkov, Maria Listratenko, Stanislav Gorbachev, Iraida Osovskaya, Andrey Kanaev, Nikolai Khimich
Summary: Cellulose is used as a template agent to structure anatase TiO2 particles, forming MCC-TiO2 composite photocatalyst with organic-inorganic structures preserved. Materials prepared in caproic acid solvent showed higher photocatalytic activity, explained by the complementary nature of organic and inorganic components.
Article
Environmental Sciences
Naveen Kumar Panneer, Chandrakala Venkatraman, Neena Bachan, Jothi Jeyarani Wilson, Merlin Arnold Edwin, Antony Robinson Jesudasan, Merline Shyla Joseph
Summary: The manuscript describes the fabrication and characterization of an eco-friendly dye-sensitized solar cell (DSSC) using aluminium-doped tin oxide nanoparticles. The doped nanoparticles showed improved optical and electrical properties compared to the undoped ones. The study also investigated the crystal structure, particle size, and photoconductivity of the nanoparticles using analytical tools such as X-ray diffraction and field emission scanning electron microscope. The results demonstrate the potential of Al-doped SnO2 nanoparticles for efficient and environmentally safe photovoltaic applications.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Rani P. Barkul, Radhakrishna S. Sutar, Meghshyam K. Patil, Sagar D. Delekar
Summary: In this study, boron-doped TiO2 nanoparticles were used to decontaminate environmentally non-benign organic pollutants, with the 7.0 mol % B@TiO2 showing the highest photocatalytic degradation activity among all samples tested.
Article
Chemistry, Multidisciplinary
Enrico Paradisi, Roberto Rosa, Giovanni Baldi, Valentina Dami, Andrea Cioni, Giada Lorenzi, Cristina Leonelli
Summary: This article introduces a new method for fast and simple synthesis of crystalline TiO2 nanoparticles with photocatalytic activity, and demonstrates the application of this method in the production of nanotitania.
Article
Chemistry, Physical
C. Gomez-Polo, S. Larumbe, A. Gil, D. Munoz, L. Rodriguez Fernandez, L. Fernandez Barquin, A. Garcia-Prieto, M. L. Fdez-Gubieda, A. Muela
Summary: The study investigates the effects of Cr and N doping on the properties of TiO2 anatase nanoparticles, including adsorption capacity, photocatalytic performance, and antibacterial response. Doping with Cr and Cr/N enhances adsorption capacity and photocatalytic performance, with Cr-TiO2 nanoparticles exhibiting antibacterial activity under visible light. The differences in electrostatic charge and nanoparticle dispersion are suggested as the main reasons for the varied antibacterial response among the doped nanoparticles.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Sipei Zhang, Ying Xu, Wen Zhang, Peng Cao
Summary: Cu and Y co-doped TiO2 nanoparticles were prepared using an acid-catalytic sol-gel process, resulting in a single anatase phase with reduced crystallite size. SEM observations showed uniform nanospheres being synthesized under the proposed conditions. XPS results demonstrated the presence of Cu+ and Y3+ ions. The photoactivity of the co-doped TiO2 was improved due to effective separation of electron-hole pairs, increased formation of active radicals, and increased surface area.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Shima Khosravani, Fatemeh Hajakbari, Alireza Hojabri
Summary: In this study, the effect of annealing temperature on the properties of undoped and Ni-doped SnO2 films was investigated. The films exhibited a tetragonal structure with nanocrystals and good adhesion to the substrate. The sensing response of Ni-doped SnO2 gas sensors was influenced by annealing temperature, with the best response observed at 500°C.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Ceramics
Lin Yang, Hong Zhang, Jiahao Chen, Hongzhu Chen, Zhicheng Li
Summary: This study focuses on tuning the conductivity of Li2ZrO3 ceramics by introducing Al3+ ions, achieving high conductivity performance under room temperature conditions. The research reveals the presence of a two-dimensional lithium ion migration network in the crystal structure of Li2ZrO3.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Ksh Priyalakshmi Devi, Pranab Goswami, Harsh Chaturvedi
Summary: Although TiO2 is a popular semiconductor photocatalyst, its efficiency for solar energy conversion is limited due to its large bandgap. This paper introduces a cost-effective Sol-Gel technique using spin coating technology to fabricate nanocrystalline TiO2 thin films. The authors managed to achieve a dopant-free pure anatase nanocrystalline TiO2 thin film with a low band gap. Thorough investigations on the film's structure, optical characteristics, and surface morphology were conducted and presented.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Syed Irfan, Muhammad Aizaz Ud Din, Muhammad Qaisar Manzoor, Deliang Chen
Summary: A novel low-temperature double solvent sol-gel method was used to fabricate (Sm, Ce, Gd) and (Sn, Se, I) co-doped Bi2Te3 nanostructures, which were then hot-pressed by spark plasma sintering. The temperature of spark plasma sintering significantly affects the thermoelectric properties of bulk Bi2Te3 pellets, with the co-dopants enhancing the power factor of the nanopowders.
Article
Engineering, Electrical & Electronic
Nattakan Kanjana, Wasan Maiaugree, Paveena Laokul
Summary: Fe3+-doped anatase TiO2 hollow spheres were prepared using carbon sphere templates, and the effects of Fe content on their properties were investigated. The results showed that the crystallinity and crystal sizes of the samples decreased with increasing Fe dopant levels, and the defect states of Fe4+, Fe3+, Fe2+, and oxygen vacancies directly influenced the optical behavior, electrical conductivity, and photocatalytic activity of the Fe:THs. The hollow spheres with an Fe doping level of 0.25 mol% exhibited the highest photodegradation efficiency under visible-light irradiation, attributed to their large surface area and high pore volume.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Charitha Thambiliyagodage, Shanitha Mirihana
Summary: This study successfully synthesized Fe and Cu co-doped TiO2 nanoparticles and investigated their photocatalytic activity. Doping with Fe and Cu can enhance the visible light sensitivity of TiO2, but increasing dopant concentration leads to a decrease in photocatalytic activity.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Zannatul Mumtarin Moushumy, Mohammad Jobaer Hassan, Mohebul Ahsan, Md Mahmudul Hasan, Md Nizam Uddin, Yuki Nagao, Mohammad A. Hasnat
Summary: A series of Ce, Bi, and N co-doped TiO2 photocatalysts were prepared to remove Chlorazol yellow (CY) dye molecules from water. The 5 wt% (Ce-Bi-N) co-doped TiO2 composite catalyst showed the best catalytic activity under sunlight irradiation. The catalyst achieved 97% degradation of CY molecules within 30 minutes and followed second-order kinetics. The developed catalyst can destruct CY molecules with a maximum rate of 23.1 mu g CY g(-1) min(-1) and the photodegradation kinetics depends on the concentration of CY.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Hayette Benkhennouche-Bouchene, Julien G. Mahy, Cedric Wolfs, Benedicte Vertruyen, Dirk Poelman, Pierre Eloy, Sophie Hermans, Mekki Bouhali, Abdelhafid Souici, Saliha Bourouina-Bacha, Stephanie D. Lambert
Summary: TiO2 prepared by a green aqueous sol-gel peptization process is co-doped with nitrogen and zirconium to improve and extend its photoactivity to the visible region. The co-doped sample shows significantly enhanced degradation of p-nitrophenol under visible light compared to undoped TiO2 and commercial P25 photocatalyst.
Article
Chemistry, Physical
Richard Reece, Constantina Lekakou, Paul A. Smith, Rossana Grilli, Christos Trapalis
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Nanoscience & Nanotechnology
Stefanos Chaitoglou, Tatiana Giannakopoulou, Dimitra Tsoutsou, Antonios Vavouliotis, Christos Trepans, Athanasios Dimoulas
Article
Engineering, Electrical & Electronic
T. Georgakopoulos, N. Todorova, S. Karapati, K. Pomoni, C. Trapalis
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2019)
Article
Chemistry, Applied
Ilias Papailias, Nadia Todorova, Tatiana Giannakopoulou, Dana Dvoranova, Vlasta Brezova, Dimitra Dimotikali, Christos Trapalis
Summary: g-C3N4/TiO2 composites are efficient photocatalysts for the removal of air pollutants, with different ratios of the materials exhibiting effectiveness in different systems.
Article
Chemistry, Multidisciplinary
Yulu Yang, Yang Tang, Haomin Jiang, Yongmei Chen, Pingyu Wan, Maohong Fan, Rongrong Zhang, Sana Ullah, Lun Pan, Ji-Jun Zou, Mengmeng Lao, Wenping Sun, Chao Yang, Gengfeng Zheng, Qiling Peng, Ting Wang, Yonglan Luo, Xuping Sun, Alexander S. Konev, Oleg Levin, Panagiotis Lianos, Zhuofeng Hu, Zhurui Shen, Qinglan Zhao, Ying Wang, Nadia Todorova, Christos Trapalis, Matthew Sheridan, Haipeng Wang, Ling Zhang, Songmei Sun, Wenzhong Wang, Jianmin Ma
CHINESE CHEMICAL LETTERS
(2019)
Article
Thermodynamics
Ioanna-Georgia Athanasoulia, Konstantinos Giachalis, Nadia Todorova, Tatiana Giannakopoulou, Petroula Tarantili, Christos Trapalis
Summary: The nanocomposites of PEG/GO prepared by drying ultrasonically homogenized aqueous solution were incorporated into PLLA via melt extrusion, resulting in increased GO structural defects and enhanced PEG penetration. Hydrogen bonding interactions, as identified by FTIR, were found in the hybrids, while DSC tests showed that GO promoted PEG crystallization by increasing its T-c and X-c. The combination of nucleant and plasticizer in the hybrids increased PLLA's Tc and melting temperature, with GO acting as an effective nucleating agent for plasticized PLLA.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Physical
Stefanos Chaitoglou, Tatiana Giannakopoulou, George Papanastasiou, Dimitra Tsoutsou, Antonios Vavouliotis, Christos Trapalis, Athanasios Dimoulas
APPLIED SURFACE SCIENCE
(2020)
Article
Polymer Science
Ioanna-Georgia Athanasoulia, Konstantinos Giachalis, Dimitrios Korres, Nadia Todorova, Tatiana Giannakopoulou, Petroula A. Tarantili, Trapalis Christos
POLYMER INTERNATIONAL
(2020)
Article
Chemistry, Physical
Ilias Papailias, Nadia Todorova, Tatiana Giannakopoulou, Nikolaos Ioannidis, Panagiotis Dallas, Dimitra Dimotikali, Christos Trapalis
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Chemistry, Physical
Tatiana Giannakopoulou, Nadia Todorova, Anastasia Erotokritaki, Niki Plakantonaki, Athena Tsetsekou, Christos Trapalis
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Physical
Nadia Todorova, Ilias Papailias, Tatiana Giannakopoulou, Nikolaos Ioannidis, Nikos Boukos, Panagiotis Dallas, Miroslava Edelmannova, Martin Reli, Kamila Koci, Christos Trapalis
Article
Chemistry, Multidisciplinary
T. Giannakopoulou, G. Pilatos, N. Todorova, N. Boukos, T. Vaimakis, I. Karatasios, C. Trapalis
Summary: This article presents a simple and eco-friendly method for the fabrication of carbon nanotubes with different morphologies, showing that the growth of tubular or bamboo-like nanostructures is determined by the surface and bulk diffusions of carbon onto and into the catalyst surface at different temperatures. The experimental results suggest that bamboo-like CNTs grow more effectively at 850 degrees Celsius.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Niki Bardi, Tatiana Giannakopoulou, Antonios Vavouliotis, Christos Trapalis
ACS APPLIED NANO MATERIALS
(2020)
Article
Chemistry, Physical
Ch Trapalis, E. Lidorikis, D. G. Papageorgiou
COMPUTATIONAL AND THEORETICAL CHEMISTRY
(2020)
Article
Materials Science, Composites
Foivos Markoulidis, Nadia Todorova, Rossana Grilli, Constantina Lekakou, Christos Trapalis
JOURNAL OF COMPOSITES SCIENCE
(2019)
Article
Materials Science, Ceramics
Deniz Bozoglu, Sahin Yakut, Kemal Ulutas, Deniz Deger
Summary: Thin film polyethylene oxide, produced by the thermal evaporation technique, exhibits structural and property differences compared to bulk polyethylene oxide. The dielectric constant of polyethylene oxide thin film is 10 times greater than that of bulk polyethylene oxide. There is consistency among dielectric constants, activation energies, and free volume fractions for both thin film and bulk samples. Polyethylene oxide thin film is observed to be more brittle than bulk polyethylene oxide.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Xiaozhen Fan, Zhuo Wang, Zheng Fang, Huiqun Ye, Jinju Zheng, Jianqiang Zhang, Yanjun Qin, Yao Zhai, Yanlong Miao, Zixiang Zhao, Can Yang, Jiajun He, Zhenghang Wei, Yunzhang Fang
Summary: The microscopic strain evolution and microstructural of FeCuNbSiB amorphous alloy samples were studied under both free and tensile stress annealing conditions. It was found that an amorphous-nanocrystalline structure was developed in both samples after annealing at 813 K, and the size of nanocrystals was limited by the applied stress.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Atsushi Tanaka, Atsuki Saito, Takashi Murata, Ayako Nakata, Tsuyoshi Miyazaki
Summary: Although molecular dynamics (MD) simulation is a powerful tool for investigating the atomic-scale structures of complex materials, its reliable and accurate application to multi-component glass systems faces challenges due to limited force fields (FFs) and the complexity of chemical environments. This study demonstrates the feasibility of efficient and accurate large-scale density functional theory (DFT) calculations for multi-component glass systems. The evaluation of classical FFs based on the results of large-scale DFT calculations reveals low accuracy for non-bridging oxygen atoms, and differences in Si-O-Si angle distribution and electronic structure for X = Mg.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Petr Shvets, Ksenia Maksimova, Aleksandr Goikhman
Summary: In this study, vanadium oxide xerogel samples were successfully synthesized through a liquid phase reaction and the interaction of films with water. The samples were thoroughly analyzed using X-ray diffraction and Raman spectroscopy, revealing the existence of two distinct phases. It was also discovered that previous misinterpretations regarding the high-pressure polymorph structure were due to the formation of a high-temperature phase. These findings highlight the potential for further refining and expanding the current structural models of vanadium oxide xerogel in future research efforts.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Yiran Zhang, Jing Pang, Qingchun Xiang, Dong Yang, Yinglei Ren, Xiaoyu Li, Keqiang Qiu
Summary: The effect of the volume fraction of body-centered cubic (BCC) crystal on the room temperature brittleness of Fe-based amorphous nanocrystalline alloys was investigated. Molecular dynamics simulations were conducted to obtain seven model samples with different embedded BCC nanocrystal contents. The results showed a gradient decrease in the plasticity of the alloys with different nanocrystal contents.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Moustafa Sahnoune Chaouche, Hani K. Al-Mohair, Shavan Askar, Barno Sayfutdinovna Abdullaeva, Naseer Ali Hussien, Ahmed Hussien Alawadi
Summary: In this work, a novel micromechanical data-driven machine learning framework was proposed to characterize material parameters in bulk metallic glasses. The framework utilized nanoindentation simulations with Berkovich and spherical tips to compile a vast collection of data on material behavior in BMGs. The developed machine learning model efficiently predicted critical material properties and highlighted the importance of input feature weight functions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Louisiane Verger, Vinuyan Ganesaratnam, Virginie Nazabal, Sebastien Chenu, Christophe Calers, David Le Coq, Laurent Calvez, Olivier Hernandez, Xiang-Hua Zhang
Summary: Crystallization in Ga, Sb, and Se glasses was studied, and a correlation between Se content, crystalline phases, and electrical conductivity was observed. The resulting glass-ceramics exhibited significantly higher conductivity compared to other Se-based glass-ceramics.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Seong-Sik Shin, Ga-Yeong Kim, Byeonggwan Lee, Jae-Hwan Yang, Yeon-Su Son, Jung-Hoon Choi, Jae-Young Pyo, Ki Rak Lee, Hwan-Seo Park, Hyun Woo Kang
Summary: In this study, silver tungstate-tellurite glass with different loading of AgI was developed for immobilization of radioactive iodine. The effects of increasing the amount of AgI on the glass matrix were investigated. The leaching properties of all samples were evaluated, and it was found that the release of all elements satisfied the US regulation.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Chunghee Nam
Summary: This study demonstrates the prediction performance of a CNN regression model for the magnetic entropy changes and transition temperatures of bulk metallic glasses with magnetocaloric effects. The model achieved high prediction performance, as measured by the determination coefficient and root mean square error. The results showed good agreement with experimental values and reported results.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
A. Hosny, Y. M. Moustafa, G. El-Damrawi
Summary: In this study, crystalline glass ceramics were obtained directly from glasses using an ion exchange process between lead bromide and oxygen ions. The addition of lead bromide caused significant changes in the glass structure and the formation of specific crystalline phases.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Luana Cristina Feitosa Alves, Jheimison Ferreira Gomes, Natacya Fontes Dantas, Maria Nayane Queiroz, Pablo Nabuco Portes, Francielle Sato, Nilma de Souza Fernandes, Karina Miyuki, Celso Vataru Nakamura, Alysson Steimacher, Franciana Pedrochi
Summary: This study evaluated the influence of CaF2 addition on the bioactivity of the samples. The results showed that the samples exhibited good bioactivity and cytocompatibility, making them suitable for biomedical applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
N. Keninger, S. Feller
Summary: The principles of Topological Constraint Theory (TCT) were used to study alkali borate and silicate glass systems. Structural models were developed based on experimental data and used to predict properties of the glass.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Hao Wang, Chengliang Zhao, Chuntao Chang, Shengli Zhu, Zhankui Zhao
Summary: The relationship between the heterogeneous structure and structural relaxation in metallic glasses was explored by investigating the quasielastic and viscoelastic behavior of a Zr55Cu30Ni5Al10 metallic glass. Stress-annealing treatment was used to retain elastic strain energy, and a unique creep recovery phenomenon was observed during the reheating process. The Maxwell model was employed to qualitatively describe the mechanisms of elastic strain energy retention and release.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Sihyung Lee, Giyeol Han, Karuppasamy Pandian Marimuthu, Hyungyil Lee
Summary: This study presents a method for extracting FVM parameters of Zr-based TFMG using MD and FEA, and validates the method through simulation and experiments.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Nedra Saad, Mohamed Haouari, Mayssa Ibrahim, Noura Amamou
Summary: In this work, we investigated the optical properties of a fluorophosphate glass system doped with Tb3+ and Eu3+ ions. We found that the emitted light can be tuned by changing the doping concentration, excitation wavelength, or excitation power, which is important for the design of solid-state lighting sources.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)