Article
Chemistry, Physical
Songbin Liu, Zhengce An, Jinshu Huang, Bo Zhou
Summary: In this research, an ideal design of sensitizing lithium sublattice core-shell nanocrystals was reported to achieve efficient NIR-II emission from a set of lanthanide emitters, including Er3+, Tm3+, Ho3+, Pr3+, and Nd3+. The quantum yield of Er3+ emission at 1.5 μm was greatly enhanced by manipulating the energy transfer via Er3+-Ce3+ cross-relaxation, reaching a highest value of 35.74% under 980 nm excitation. The single-particle level 808 nm responsive efficient NIR-II emission was enabled through rational core-shell-shell structure design. Moreover, the lithium-sublattice exhibited an obvious spectral Stark-splitting feature, which can be used for ultrasensitive NIR-II nanothermometry.
Article
Nanoscience & Nanotechnology
Chidharth Krishnaraj, Hannes Rijckaert, Himanshu Sekhar Jena, Pascal Van der Voort, Anna M. Kaczmarek
Summary: This study demonstrates the use of covalent organic frameworks (COFs) to encapsulate lanthanide nanoparticles, enabling them to function as both nanothermometers and catalysts. By utilizing the support of COF and the temperature measurement capabilities of lanthanide nanoparticles, local temperature monitoring during catalytic reactions is achieved.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Multidisciplinary
Marta Quintanilla, Malou Henriksen-Lacey, Carlos Renero-Lecuna, Luis M. Liz-Marzan
Summary: This article discusses the various methods of using nanothermometers for temperature sensing in heterogeneous environments, with a focus on recent developments in incorporating luminescent nanoparticles into complex in vitro and in vivo models. Methods for avoiding thermal misreading are also discussed, considering their respective advantages and drawbacks.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Karmel de Oliveira Lima, Luiz Fernando dos Santos, Rodrigo Galvao, Antonio Claudio Tedesco, Leonardo de Souza Menezes, Rogeria Rocha Goncalves
Summary: This study presents a highly sensitive and accurate luminescence nanothermometer based on cerium ions, showing potential application in biological settings.
FRONTIERS IN CHEMISTRY
(2021)
Article
Polymer Science
Hulin Wu, Aifeng Jiang, Mengru Li, Yanyan Wang, Fangchao Zhao, Yanchun Li
Summary: In this study, core-shell-structured RDX@PVDF microspheres were produced and their properties were fully characterized. The weight fraction of PVDF was found to directly affect the thermal stability and mechanical sensitivity of the microspheres. Among all samples, the core-shell-structured RDX@PVDF microspheres with a RDX to PVDF ratio of three to one showed the lowest sensitivity and the highest thermal stability. This work provides a simplified method for positive design of energetic materials and prediction of their environmental adaptability.
Article
Nanoscience & Nanotechnology
Marcus Vinicius-Araujo, Navadeep Shrivastava, Ailton A. Sousa-Junior, Sebastiao A. Mendanha, Ricardo Costa De Santana, Andris F. Bakuzis
Summary: This study introduces a trimodal system that combines magnetic nanoparticle hyperthermia, photothermal therapy, and luminescent nanothermometry properties into a single nanoplatform, showing potential for multifunctionality. By optimizing zinc-manganese ferrite NPs for low-field magnetic hyperthermia, superior performance was achieved, as well as enhanced photothermal therapy through silica coating and Nd3+ doping.
ACS APPLIED NANO MATERIALS
(2021)
Article
Physics, Condensed Matter
Luiz H. A. R. Ferreira, Lauro J. Q. Maia
Summary: This study focused on the synthesis and characterization of the Y2Ba3B4O12 phase with different heat treatment conditions. It aimed to evaluate the potential biolo-gical applications of this phase as an optical nanothermometer in the near-infrared spectrum and the temperature range of 25-55 degrees C. The results confirmed the successful synthesis of Y2Ba3B4O12 nanoparticles co-doped with Nd3+ and Yb3+ at 1000 degrees C for 5 min. The structural and spectroscopic analyses demonstrated the crystalline nature of the produced phase and evaluated its optical properties.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Multidisciplinary
Yingli Shen, Jose Lifante, Irene Zabala-Gutierrez, Maria de la Fuente-Fernandez, Miriam Granado, Nuria Fernandez, Jorge Rubio-Retama, Daniel Jaque, Riccardo Marin, Erving Ximendes, Antonio Benayas
Summary: The temperature of tissues and organs is an important parameter affected by physiological and pathological processes. Accurate measurement of internal organ temperature is crucial for detecting the onset and development of these processes. Luminescence nanothermometry is a promising technology for achieving minimally invasive and reliable temperature measurement. This study demonstrates the use of bright Ag2S nanoparticles with temperature-dependent fluorescence lifetime for accurate measurement of liver temperature in mice with lipopolysaccharide-induced inflammation.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Rui F. S. Carvalho, Giovannia A. L. Pereira, Joao Rocha, M. Margarida C. A. Castro, Carlos M. Granadeiro, Helena I. S. Nogueira, Joop A. Peters, Carlos F. G. C. Geraldes
Summary: The relaxivities of decatungstolanthanoate core-shell nanoparticles were studied, showing that GdPOM has higher relaxivity than Gd-DTPA due to second-sphere relaxation effects. The nanoparticles have core-shell structures with LnPOM-containing cores and amorphous silica shells, exhibiting negative zeta potentials and time-dependent hydrodynamic diameters in water suspensions. The relaxivities of GdPOM@SiO2 NPs suspensions are considerably larger than for the GdPOM solutions, indicating their porous silica shell and potential as dual modality MRI/optical imaging contrast agents.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Engineering, Multidisciplinary
Yue-qi Li, Heng Zhai, Ping Ye, Xing-quan Zhang, Chang-ping Guo
Summary: Inspired by superhydrophobic plants and animals in nature, HMX@CS core-shell composites with similar properties were successfully prepared. The composites exhibited good compatibility and buffering performance, as well as excellent hydrophobic and oleophilic properties, providing a new approach for the development of multifunctional energetic materials.
DEFENCE TECHNOLOGY
(2022)
Article
Physics, Condensed Matter
Luiz H. A. R. Ferreira, Geraldine Dantelle, Alain Ibanez, Lauro J. Q. Maia
Summary: The synthesis and characterization of single-doped Nd3+ and co-doped Nd3+/Yb3+ beta-BaB2O4 (beta-BBO) nanoparticles were conducted in this study. The nanoparticles showed potential as efficient luminescent nanothermometers in the near-infrared range, with a higher relative thermal sensitivity compared to some other matrices found in the literature.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Chemistry, Physical
Fariba Malekpour Galogahi, Hongjie An, Yong Zhu, Nam-Trung Nguyen
Summary: This study investigates the behavior of core-shell microparticles with a liquid core under thermal and mechanical loads, establishing analytical models and conducting experiments to validate them. The results demonstrate that the maximum temperature and critical compression force before rupture of core-shell microparticles depend on the liquid, geometry, and material of the shell.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Biochemistry & Molecular Biology
Claudia Elizabeth Ruiz-Davila, Karla Ivon Solis-Andrade, Miguel Olvera-Sosa, Gabriela Palestino, Sergio Rosales-Mendoza
Summary: Advanced materials used in biomedicine field include a diverse group of organic molecules such as polymers, polysaccharides, and proteins. The design and synthesis of core-shell microgels based on chitosan and Porphyridium exopolysaccharides (EPS) crosslinked with sodium tripolyphosphate (TPP) is described in this study. The size and properties of the microgels were influenced by factors such as reaction temperature, sonication time, exopolysaccharide concentration, pH, and TPP concentration. The obtained microgels showed potential in biomedical applications based on their characteristics and performance.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Review
Chemistry, Applied
Wei Wang, Lei He, Qunxing Luo, Linyang Wang, Jing Wang, Huiyong Chen, Zongcheng Miao, Qiuxiang Yao, Ming Sun
Summary: Research on the synthesis of zeolite molecular sieves focuses on manipulating their properties by adjusting particle size, composition, and morphology. The core and shell concept particles, which integrate multiple functions into a single shape, have been extensively studied. This article presents novel design strategies for zeolite-related core and shell concept particles and their application in conventional thermal catalysis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Materials Science, Ceramics
Taoxin Qi, Lei Lei
Summary: The energy transfer processes in the BaYF5-based core/shell/shell nanoparticles are comprehensively manipulated, leading to a significantly improved upconversion intensity. These nanoparticles also show potential for selective sensing of rhodamine B.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Andrey P. Shablinskii, Alexei Povolotskiy, Ilya E. Kolesnikov, Yaroslav P. Biryukov, Rimma S. Bubnova, Margarita S. Avdontceva, Sofya Demina, Stanislav K. Filatov
Summary: Polycrystalline phosphors BaBi2-xEuxB2O7 with different Eu3+ concentrations were obtained by crystallization from glass-ceramics. The distribution of Eu3+ ions over cation sites was investigated using X-ray diffraction experiments. The luminescent properties of the BaBi2-xEuxB2O7 phosphors were studied for the first time, revealing an optimal concentration for Eu3+ ions and a gradual change in chromaticity with increasing Eu3+ content. It is expected that these phosphors can be used as red-emitting ones under LED excitation.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Ilya E. Kolesnikov, Daria V. Mamonova, Mikhail A. Kurochkin, Vassily A. Medvedev, Evgenii V. Borisov, Evgenii Yu Kolesnikov
Summary: Rapid progress in nanotechnology and biomedicine has led to a high demand for accurate and contactless thermal sensing in real time. To address this issue, dual-doped Gd2O3:Tb3+,Eu3+ nanopowders were suggested as ratiometric thermometers within a wide temperature range. The effects of calcination temperature on the structure, morphology, luminescence, and thermometric properties were studied. The results showed that the growth of calcination temperature enhanced the thermometric performances, with the best thermometer displaying a sensitivity of 5.04% K-1 at 473 K.
CERAMICS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Ilya E. Kolesnikov, Daria Mamonova, Mikhail A. Kurochkin, Vassily A. Medvedev, Gongxun Bai, Evgenii Yu Kolesnikov
Summary: Single doped CaWO4:Er3+ phosphors were synthesized and studied for optical thermal sensing within a wide temperature range. The ratiometric strategy using two luminescence intensity ratios improved thermometric characteristics and expanded the working temperature range. The thermometric performances of the samples were evaluated, and it was found that LIR1 had high sensitivity while LIR2 provided more accurate thermal sensing. The results indicate that CaWO4:Er3+ phosphors have potential in dual-mode thermal sensing.
Article
Biochemistry & Molecular Biology
Ilya Kolesnikov, Daria Mamonova, Dmitrii Pankin, Gulia Bikbaeva, Anastasia Khokhlova, Anna Pilip, Anastasia Egorova, Vladislav Zigel, Alina Manshina
Summary: Phosphonate-fullerene hybrids are a new generation of compounds that exhibit bioactivity, photoswitchable properties, and high selectivity of response to light wavelength. Experimental results show that these hybrids have increased cholinesterase inhibition compared to pure phosphonates and demonstrate pronounced changes in inhibition degree under laser irradiation.
PHOTOCHEMISTRY AND PHOTOBIOLOGY
(2023)
Article
Chemistry, Physical
Hao Li, Yingjie Zhao, Ilya Kolesnikov, Shiqing Xu, Liang Chen, Gongxun Bai
Summary: This study successfully developed rare earth ions-doped Ba2LaF7 nanocrystals as the core material in a multi-functional system for photothermal therapy. Optical temperature measurement based on fluorescence intensity ratio improved sensitivity, and the nanocrystals showed a good photothermal response to laser pumping power and could be used for photothermal imaging.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biochemistry & Molecular Biology
Kamila R. Enikeeva, Aliia V. Shamsieva, Anna G. Strelnik, Robert R. Fayzullin, Dmitry V. Zakharychev, Ilya E. Kolesnikov, Irina R. Dayanova, Tatiana P. Gerasimova, Igor D. Strelnik, Elvira I. Musina, Andrey A. Karasik, Oleg G. Sinyashin
Summary: Tertiary diethylpyridylphosphine was synthesized by reaction of pyridylphosphine with bromoethane in suberbasic medium. The reaction of phosphine with copper(I) iodide formed a copper(I) coordination polymer with an intermediate structure containing a copper-halide core. The obtained coordination polymer exhibited green and red emissions, and depolymerization resulted in the formation of a complex with the octahedral structure of the copper-halide core. The coordination polymer can serve as a sensor or detector for overheating processes that need to be maintained at temperatures below 138 degrees C.
Article
Chemistry, Physical
Evgenii V. Borisov, Alexey A. Kalinichev, Ilya E. Kolesnikov
Summary: ZnTe crystal is applied for precise thermal sensing for cryogenic temperatures. By using Raman and photoluminescence spectroscopy, the operating temperature range and reliability of the thermometers are improved. Raman-based temperature sensing is applicable in the range of 20-100 K, while luminescence-based thermometry is used in a narrower range of 20-70 K with better thermal sensitivity and temperature resolution. The study demonstrates the potential of ZnTe crystal as a multimode contactless optical sensor for cryogenic thermometry.
Article
Chemistry, Multidisciplinary
Anna A. A. Vasileva, Daria V. V. Mamonova, Yuri V. V. Petrov, Ilya E. E. Kolesnikov, Gerd Leuchs, Alina A. A. Manshina
Summary: We propose an efficient method for creating stable electrocatalytically active nanocomposites by combining in situ synthesis of polyaniline (PANI) with laser-induced deposition of metal nanoparticles (NPs). The use of the substrate during the formation of multi-metallic nanoparticles (MNP) solves the problem of particle loss from the electrode surface. The PANI/AgPt nanocomposites show the best activity and stability in electrocatalysis.
Article
Materials Science, Ceramics
Ilya E. Kolesnikov, Daria Mamonova, Mikhail A. Kurochkin, Vassily A. Medvedev, Evgenii Yu Kolesnikov
Summary: In recent years, contactless thermal sensing has made significant progress due to the rapid development of luminescence thermometry. However, there is still room for improvement in the thermometric performances of these sensors. Most optical thermometers rely on a single temperature-sensitive luminescence parameter, but multiparametric readouts could enhance the reliability and broaden the working range of temperature measurements.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Aleksandra A. Vidyakina, Andrey A. Shtyrov, Mikhail N. Ryazantsev, Alexander F. Khlebnikov, Ilya E. Kolesnikov, Vladimir V. Sharoyko, Dar'ya Spiridonova, Irina A. Balova, Stefan Braese, Natalia A. Danilkina
Summary: Fluorescent isocoumarin-fused cycloalkynes have been developed, which react in SPAAC and give fluorescent triazoles regardless of the azide nature. The introduction of a pi-acceptor group at the C6 position of the isocoumarin ring converts the non-fluorescent cycloalkyne/triazole pair to its fluorescent counterpart. The design of the fluorescent cycloalkyne/triazole pairs is based on theoretical studies of the deactivation mechanism and electron density redistribution.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Viktor G. G. Nosov, Yulia N. N. Toikka, Anna S. S. Petrova, Oleg S. S. Butorlin, Ilya E. E. Kolesnikov, Sergey N. N. Orlov, Mikhail N. N. Ryazantsev, Stefaniia S. S. Kolesnik, Nikita A. A. Bogachev, Mikhail Yu. Skripkin, Andrey S. S. Mereshchenko
Summary: Luminescent, heterometallic terbium(III)-lutetium(III) terephthalate metal-organic frameworks (MOFs) were synthesized using two methods: synthesis from diluted and concentrated solutions. The synthesized samples showed different crystalline phases depending on the concentration of Tb3+. The compounds corresponding to the Ln(2)bdc(3) crystalline phase demonstrated significantly higher photoluminescence quantum yields (PLQY) compared to other phases due to the absence of quenching from water molecules. One of the synthesized materials, (Tb0.1Lu0.9)(2)bdc(3)center dot 1.4H(2)O, showed a high PLQY of 95%, making it one of the most efficient Tb-based MOFs.
Article
Chemistry, Physical
Viktor G. Nosov, Anna A. Betina, Tatyana S. Bulatova, Polina B. Guseva, Ilya E. Kolesnikov, Sergey N. Orlov, Maxim S. Panov, Mikhail N. Ryazantsev, Nikita A. Bogachev, Mikhail Yu Skripkin, Andrey S. Mereshchenko
Summary: Luminescent NaYF4:Sm3+ nano- and microcrystalline materials co-doped with La3+, Gd3+, and Lu3+ ions were synthesized using the hydrothermal method. The synthesis process involved the use of rare earth chlorides as precursors and citric acid as a stabilizing agent. The synthesized materials exhibited a beta-NaYF4 crystalline phase, except for those with high La3+ content which formed LaF3. Particle size was significantly affected by the type and content of doping REE. Excitation at 400 nm resulted in distinct emission peaks in the visible spectrum due to transitions of the Sm3+ ion. Increasing the Sm(III) content led to concentration quenching, with an optimum concentration of 2%. Co-doping with non-luminescent La3+, Gd3+, and Lu3+ ions increased the emission intensity, explained by the viewpoint of Sm3+ local symmetry.
Article
Chemistry, Multidisciplinary
Anna A. Vasileva, Daria V. Mamonova, Vladimir Mikhailovskii, Yuri V. Petrov, Yana G. Toropova, Ilya E. Kolesnikov, Gerd Leuchs, Alina A. Manshina
Summary: This paper presents a new methodology for creating 3D ordered porous nanocomposites using anodic aluminum oxide template with polyaniline (PANI) and silver NPs. The approach involves in situ synthesis of polyaniline on templates and laser-induced deposition of Ag NPs on the pore walls. The developed structures demonstrated effectiveness as non-enzymatic electrochemical sensors for glucose detection in a concentration range crucial for medical applications.
Article
Chemistry, Multidisciplinary
T. S. Bulatova, A. A. Betina, V. G. Nosov, I. E. Kolesnikov, N. A. Bogachev, M. Yu. Skripkin, E. M. Khairullina, A. S. Mereshchenko
Summary: Microcrystalline phosphors NaY0.8-xYb0.2HoxF4 (x = 0-0.1) were synthesized by the hydrothermal method and it was found that holmium(III) ions replaced yttrium ions, leading to the maximum intensity of up-conversion emission.
RUSSIAN JOURNAL OF GENERAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Ilya E. Kolesnikov, Daria V. Mamonova, Mikhail A. Kurochkin, Mikhail A. Khodasevich, Vassily A. Medvedev, Evgenii Yu. Kolesnikov, Alina A. Manshina
Summary: Luminescence thermometry offers remote temperature sensing with high spatial and temporal resolution. Several strategies have been explored to maximize the performance of these thermal sensors, including the use of multiple temperature-sensitive parameters. In this study, luminescence thermometry based on single parameter monitoring (LIR, spectral line position, and bandwidth) was compared with multiparametric sensing based on principal component analysis. The results showed that multiparametric thermometry outperformed the classical single parameter approach, offering potential for further enhancement of the thermometric performances of luminescence thermometers through data calibration.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
