Article
Chemistry, Physical
Shikha Sharma, Sumit Singh, Ujwal Manhas, Irfan Qadir, Amit Kumar Atri, Devinder Singh
Summary: Wastewater treatment is crucial due to its harmful effects on nature and living creatures. Dyes, especially organic pollutants, pose serious risks to human health and the environment in wastewater. This study focuses on removing these colored effluents from wastewater, both individually and in mixtures. Nano photocatalysts La1-xNaxFeO3 and their Cu composites were synthesized and characterized for their structural, morphological, optical, and magnetic properties. The Cu nano composites exhibited excellent photocatalytic activity, attributed to their low band gap energies. The stability and reusability of the most active photocatalyst, LaFeO3@Cu, were demonstrated. Additionally, the study extended its scope to the degradation of other organic dye contaminants using the same catalyst. (c) 2023 Elsevier B.V. All rights reserved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Alireza Jahangiri, Majid Saidi
Summary: In this study, a series of Gadolinium (Gd) substituted LaNiO3 nano catalysts were synthesized and applied in auto-thermal reforming of methane (ATR). The results showed that the catalysts had homogeneous and crystalline structures, with Gd increasing the specific surface area and difficulty of reduction. The catalysts exhibited high catalytic activity and stability in the ATR process.
Article
Polymer Science
Daniel Navas, Sandra Fuentes, Alejandro Castro-Alvarez, Emigdio Chavez-Angel
Summary: Sol-Gel is a low-cost and flexible synthetic route that can produce a wide range of micro- and nanostructures with small variations in synthesis parameters. By changing precursors, solvents, temperature, and reaction times, the morphology and properties of the products can be modified. This method shows great potential for future applications in various technological fields.
Article
Chemistry, Physical
Weiren Xia, Kai Leng, Qingkai Tang, Li Yang, Yuting Xie, Zhiwei Wu, Kang Yi, Xinhua Zhu
Summary: In this study, perovskite manganese oxide nanoparticles were synthesized via the sol-gel process and the effects of Ln-doping on their structural, magnetic, and optical properties were investigated. The experimental results showed that the lattice parameters of the nanoparticles gradually changed with increasing Ln-doping concentration, and the morphology evolved from spherical to irregular shape.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Biochemistry & Molecular Biology
Fang Yang, Xingxing Yang, Kaimin Su, Jinpei Lin, Yun He, Qing Lin
Summary: La1-xRxFeO3 (R = Co, Al, Nd, Sm) materials were synthesized using the sol-gel method and analyzed by XRD, TG-DTA, and VSM. The magnetic properties of the samples were found to increase with proper doping of Co2+, Al3+, Nd3+, and Sm3+ ions. The grain size and magnetic loop area also showed significant changes with the increase in doping content. The findings suggest that doping can improve the magnetization and refine the particles, resulting in better magnetic performance.
Article
Engineering, Environmental
Jialin Qiang, Denghui Wang, Shien Hui
Summary: Perovskite oxides doped with Sr show potential for thermochemical energy storage. The synthesis and REDOX properties of La1_xSrxCoO3-6 perovskite oxides can be optimized through variations in calcination temperature and doping amount. Optimization of synthesis methods and Sr doping levels can lead to improved REDOX performance and energy storage capabilities.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Materials Science, Ceramics
Yu-Kun Syue, Kuo-Chin Hsu, Te-Hua Fang, Chun- Lee, Chi-Jen Shih
Summary: In this study, zinc oxide (ZnO) nanofibers were prepared using the electrospinning method and combined with La0.8Sr0.2FeO3 (LSFO) perovskite film to create a ZnO/LSFO heterostructure gas sensor. The sensor showed a good sensing response to H2S gas and exhibited gas selectivity.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Huiyang Liu, Yue Cao, Yanping Chen, Weikang Liu, Tingting Miao, Bin Cheng, Hongwei Qin, Jifan Hu
Summary: Planar electrode sensors of La1-xYxFeO3 (x = 0, 0.2, 0.4, 0.6, 0.8, and 1) perovskite material were prepared for VOCs gas detection. The La1-xYxFeO3 (x = 0.8) sensor exhibited higher gas response due to higher surface adsorbed-oxygen content. Light illumination enhanced the gas response of the La0.2Y0.8FeO3 sensor, with shorter wavelength leading to higher gas response. At 370 nm light illumination and 100°C, the gas responses of the La0.2Y0.8FeO3 sensor to 5 ppm ethanol, methanol, acetone, and formaldehyde were 36.369, 32.352, 36.357, and 12.545, respectively. The La0.2Y0.8FeO3 planar electrode sensor showed greater gas responses and lower operating temperature, reducing power consumption and expanding its applicability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Anithadevi Sekar, Ramanan Vadivel, Ramanujam Ganesh Munuswamy, Rakhi Yadav
Summary: The study introduces a new fingerprint visualizing agent, the biocompatible zinc oxide-carbon dots/silica gel (C-ZnO-dots/Si) nanopowder, which is low-cost and non-toxic. Results show that the synthesized nanopowder performs well in LF identification and can extract features of Level 1-3.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Haifeng Liu, Chengbo Li, Ruishi Xie, Jie Li, Guohua Ma, Kui Zheng, Xingquan Zhang, Heyan Huang, Tongjiang Peng, Jichuan Huo
Summary: Different La1-xBaxMnO3+delta nanopowders were prepared using a traditional sol-gel method and showed excellent gas-sensing performance towards acetone. The Ba2+ doping agent can enhance the response of the sensor towards acetone by converting Mn3+ to Mn4+ and introducing hole carriers into the semiconductor, while also promoting the conduction rate and gas sensing speed. These results suggest the potential applicability of La1-xBaxMnO3+delta perovskite-type structures in industrial acetone sensing.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Ateeq Ahmed, Mohammad Nasir, Hee Jung Park, Mohammad Furquan, Mohd Hashim, Byung-Sang Choi
Summary: This study focuses on the synthesis and physical properties of Mn doped LaNiO3 perovskite, a potential candidate for magnetic refrigeration. The successful synthesis of Mn substituted LaNiO3 using a sol-gel process and its complex magnetic properties were examined. The results demonstrate the importance of dopants in tuning the magnetic state and their potential applications in future magnetic devices.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
Yingchao Wang, Jingjing Wu, Xianglong Lu, YuMin Guo, Huining Zhao, Xin Tang
Summary: This study reports the synthesis of Sr0.9M0.1RuO3-delta (SMRO, M=K, Na, Ag) perovskite catalysts via a sol-gel method, which exhibit excellent oxygen evolution and oxygen reduction reaction performance. Metal ion doping introduces oxygen vacancies and lattice oxygen into the structure, which is identified as the main reason for the improved catalytic activity. Among the four samples, Sr0.9Ag0.1RuO3 (SARO) shows the highest activity. This work may offer insights into the design of efficient bifunctional OER/ORR electrocatalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Lena Meyniel, Cedric Boissiere, Natacha Krins, Sophie Carenco
Summary: In this study, thin films of lanthanide oxysulfide were developed that are compatible with flexible substrates and retain the robustness advantages of inorganic compounds. The films, made using a low-temperature dip coating method, maintained the optical quality of the materials. The thickness of the films could be adjusted in a wide range, and thermal treatment was optimized to remove organic ligands while preserving the integrity of the nanoparticles.
Article
Materials Science, Multidisciplinary
Juan Wang, Fengcang Ma, Lin Song, Ping Liu, Wei Li, Ke Zhang, Xiaohong Chen
Summary: Benzotriazole (BTA) inhibitor was coated in mesoporous silica nanoparticles (MSNs) using tannic acid complex (TAC) deposition, forming a pH control release valve for sensitive feedback and control of BTA release. By adding MSNs-BTA@TAC to an organic-inorganic composite coating, a self-healing coating with pH feedback sensitivity and corrosion compensation function was prepared. The results showed significant self-healing effect of the coating after soaking in simulated body fluids, with a increase in low-frequency impedance modulus.
Article
Engineering, Mechanical
Kejing Liu, Xiufang Cui, Zhiguo Xing, Jian Li, Xuerun Zhang, Meiling Dong, Guo Jin, Haidou Wang, Binshi Xu
Summary: In this study, a composite layer consisting of gradient nanocrystals and LaFeO3 perovskite oxide was prepared to investigate its influence on carbon atom diffusion and wear mechanism. Experimental results indicate that the formation mechanism of the composite layer involves dislocation slip and strain gradient evolution at grain boundaries. Oxygen vacancies provided by the nano oxides enhance the surface activity of the samples and facilitate carbon diffusion to deeper layers. Additionally, the presence of the composite layer alters the wear mode at different depths.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
T. Sopcak, L. Medvecky, M. Giretova, R. Stulajterova, M. Faberova, F. Kromka, V Girman
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2020)
Article
Chemistry, Physical
Lubomir Medvecky, Maria Giretova, Radoslava Stulajterova, Jan Danko, Katarina Vdoviakova, Lenka Kresakova, Zdenek Zert, Eva Petrovova, Katarina Holovska, Maros Varga, Lenka Luptakova, Tibor Sopcak
Summary: Novel calcium phosphate cements containing a mixture of four amino acids were used to treat artificial osteochondral defects in the knee, with successful formation of hyaline cartilage and subchondral bone. The enhanced concentration of extracellular collagen amino acids in the cement supported the healing of the defects, showing excellent results in pigs without inflammation and stable tissues after 12 months' healing, with good integration of neocartilage and surrounding tissues.
Article
Chemistry, Physical
Lubomir Medvecky, Maria Giretova, Radoslava Stulajterova, Lenka Luptakova, Tibor Sopcak
Summary: The modified one-step process allowed the formation of tetracalcium phosphate/monetite/calcium sulfate hemihydrate (CAS) with nanoparticles, and the presence of nano calcium sulfate hemihydrate (CSH) in small amounts was found to enhance the in vitro bioactivity of CAS cement. This enhanced bioactivity shows potential for bone defect treatment and bone healing.
Article
Polymer Science
Eva Petrovova, Marek Tomco, Katarina Holovska, Jan Danko, Lenka Kresakova, Katarina Vdoviakova, Veronika Simaiova, Filip Kolvek, Petra Hornakova, Teodor Toth, Jozef Zivcak, Peter Gal, David Sedmera, Lenka Luptakova, Lubomir Medvecky
Summary: Biopolymer composites provide an optimal environment for the regeneration of articular cartilage defects, with potential for clinical testing in the orthopedic field. The use of acellular polyhydroxybutyrate/chitosan implants in sheep models showed promising results, with hyaline-like cartilage formation observed in most treated animals.
Article
Agriculture, Dairy & Animal Science
Filip Kol'vek, Lenka Kresakova, Katarina Vdoviakova, L'ubomir Medvecky, Zdenek Zert
Summary: Subchondral cystic lesions are common in horses and can cause lameness. Fusion surgery for joints with these lesions may require the use of screws and plates for stability. Horse owners should be aware of the potential need for surgical intervention with this condition.
Article
Chemistry, Physical
Lenka Kresakova, Jan Danko, Katarina Vdoviakova, Lubomir Medvecky, Zdenek Zert, Eva Petrovova, Maros Varga, Tatiana Spakovska, Jozef Pribula, Miroslav Gasparek, Maria Giretova, Radoslava Stulajterova, Filip Kolvek, Zuzana Andrejcakova, Veronika Simaiova, Marian Kadasi, Vladimir Vrabec, Teodor Toth, Vladimir Hura
Summary: This study demonstrated that treatment of osteochondral defects with the novel biocement enriched with amino acids is an effective solution for sheep, resulting in efficient regeneration of articular cartilage with predominant characteristics of hyaline cartilage. The use of this new biocement can induce endogenous regeneration of cartilage and provide multiple benefits for future therapies supporting osteochondral defect healing.
Article
Multidisciplinary Sciences
Csilla Tothova, Oskar Nagy, Jaroslav Novotny, Katarina Vdoviakova, Lenka Kresakova, Jan Danko, Zdenek Zert, Lubomir Medvecky, Eva Petrovova
Summary: This study investigated the changes in inflammatory markers and enzyme activities following the repair of induced articular cartilage defects in pigs. The results suggest that SAA, Hp, CRP, and pig-MAP may be useful biomarkers for monitoring acute phase responses during the postoperative period.
Article
Chemistry, Physical
Radoslava Stulajterova, Lubomir Medvecky, Maria Giretova, Tibor Sopcak, Lenka Luptakova, Radovan Bures, Eva Szekiova
Summary: Magnesium pyrophosphate modified tetracalcium phosphate/monetite cement mixtures were prepared through simple mechanical homogenization and showed suitable setting properties and biocompatibility for the treatment of bone defects.
Article
Chemistry, Multidisciplinary
Helena Brunckova, Erika Mudra, Magdalena Streckova, Lubomir Medvecky, Tibor Sopcak, Ivan Shepa, Alexandra Kovalcikova, Maksym Lisnichuk, Hristo Kolev
Summary: The present study focuses on the synthesis and structural properties of amorphous terbium metal-organic framework thin film (TbMOF-TF) and its transformation to terbium oxide at 450 degrees C. Different amounts of modulator were used to prepare crystalline and amorphous films, which were characterized by various techniques. The results showed that the amorphous film was fully transformed to terbium oxide at 450 degrees C.
Article
Oncology
Zuzana Demcisakova, Lenka Luptakova, Zuzana Tirpakova, Alena Kvasilova, Lubomir Medvecky, Ward De Spiegelaere, Eva Petrovova
Summary: The chorioallantoic membrane (CAM) is widely used as an in vivo model to study angiogenesis and its inhibition. This study evaluates the angiogenic potential of an acellular biopolymer scaffold using the CAM assay, showing promising results for the treatment of hard tissue defects.
Article
Chemistry, Physical
Radoslava Stulajterova, Maria Giretova, Lubomir Medvecky, Tibor Sopcak, Lenka Luptakova, Vladimir Girman
Summary: The effect of adding nanosilica on the microstructure and osteogenic differentiation of mesenchymal stem cells in a cement mixture was studied. The results showed that the addition of nanosilica improved the compactness of the microstructure and enhanced the injectability of the cement paste, as well as promoted the upregulation of osteogenic markers in cells cultured in cement extracts.
Article
Biotechnology & Applied Microbiology
Lenka Kresakova, Lubomir Medvecky, Katarina Vdoviakova, Maros Varga, Jan Danko, Roman Totkovic, Tatiana Spakovska, Marko Vrzgula, Maria Giretova, Jaroslav Briancin, Veronika Simaiova, Marian Kadasi
Summary: This study investigated the effects of hydroxyapatite (HA) ceramic implants on bone defect healing, focusing on biocompatibility, biodegradability, osteoconductivity, osteoinductivity, and osteointegration with surrounding bone tissue. The results showed that HA ceramic implants exhibited good biocompatibility and osteoconductivity. The group with perforated HA plates showed the highest degree of biodegradation, bioresorption, and new bone formation.
BIOENGINEERING-BASEL
(2023)
Article
Engineering, Biomedical
Lubomir Medvecky, Maria Giretova, Radoslava Stulajterova, Tibor Sopcak, Pavlina Jevinova, Lenka Luptakova
Summary: New biocements based on a mixture of calcium phosphate/monetite modified with honey were prepared. The addition of honey did not affect the setting process of the cements and promoted the formation of calcium-deficient nanohydroxyapatite. The honey cements exhibited lower compressive strength but showed good antibacterial activity and enhanced antioxidant inhibitory activity. Furthermore, the addition of honey also increased the bioactivity of the cements, indicating their potential as therapeutic candidates for bone defect repair.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Helena Brunckova, Erika Mudra, Lucas Rocha, Eduardo Nassar, Willian Nascimento, Hristo Kolev, Maksym Lisnichuk, Alexandra Kovalcikova, Zuzana Molcanova, Magdalena Streckova, Lubomir Medvecky
Summary: This study successfully synthesized lanthanide metal-organic frameworks with excellent luminescence properties, confirmed by XPS analysis of surface chemistry compositions and mixed valence states. These novel materials exhibit superior red emission suitable for commercial phosphor applications and show potential as UV light sensors for biological applications.
Article
Engineering, Biomedical
Lubomir Medvecky, Radoslava Stulajterova, Maria Giretova, Lenka Luptakova, Tibor Sopcak
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.
