Article
Materials Science, Multidisciplinary
B. L. Choudhary, Namita Kumari, Jyoti Kumari, Arvind Kumar, S. N. Dolia
Summary: This paper discusses the relaxation mechanism at a lower temperature in the Ni0.5Zn0.5Fe2O4 sample prepared using the sol-gel method. The crystal structure and elemental composition were analyzed using XRD and EDAX techniques, revealing a decrease in magnetic domain size with increasing temperature and supporting relaxation at lower temperatures.
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
Chemistry, Physical
S. Goswami, P. Gupta, S. Bedanta, M. Chakraborty, D. De
Summary: This article reports exchange bias (EB) and memory effect in nanocrystalline CoCr2O4, with results showing that these effects are caused by inherent magnetic inhomogeneity rather than surface effects.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Hui Dan, Li Chen, Zhen Li, Xinmiao He, Yi Ding
Summary: Amorphous ZrO2 powders were successfully prepared using a novel hydrothermal-assisted sol-gel method. The obtained powders exhibited features of small and uniform particle size, as well as high purity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Physics, Condensed Matter
Thanit Tangcharoen
Summary: In this study, nanocrystalline non-magnetic ion-doped zinc oxide powders were synthesized and investigated using various techniques. The introduction of magnesium and calcium ions resulted in the formation of hexagonal solid MgZnO and CaZnO, as well as composites of Mg/ZnO, CaO/ZnO, and Al2O3/ZnO without impurity phases. The modified samples showed improved textural properties and higher bandgap energy compared to the pure sample. Furthermore, the emission bands in the photoluminescence spectra showed significant changes in intensity as the concentration of non-magnetic ions increased. VSM results revealed the adjustment of zinc oxide's diamagnetism to paramagnetism and ferromagnetism through the introduction of non-magnetic ions.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Polymer Science
Hartina Mohd Yusop, Annur Isma Husna Mohd Ismail, Wan Norfazilah Wan Ismail
Summary: A new biopolymer-silica hybrid material composed of inulin and TEOS was successfully synthesized via sol-gel method for use as an adsorbent. Analysis using FTIR, EDX, FESEM, XRD, BET, and TGA confirmed the strong interaction between inulin and TEOS, optimal morphology and characteristics for absorption properties, mesoporous structure, and thermal stability of the composite material.
Article
Materials Science, Multidisciplinary
Giora Kimmel, Alla Sahartov, Yatir Sadia, Ze'ev Porat, Jacob Zabicky, Efraim Dvir
Summary: The present study reports on the consistent non-monotonic lattice variation in nanocrystalline CeO2. Analysis of more than 30 powder samples revealed that unit cell parameters change smoothly with decreasing grain size, showing moderate contraction between 100 to 30 nm and severe expansion below 20 nm. The change in lattice parameter is modeled as a combination of surface tension-induced contraction and ionic bonds weakening-induced lattice expansion, applicable to most ionic nanocrystalline materials.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Narthana Kandhasamy, Gopal Ramalingam, Govindhasamy Murugadoss, Manavalan Rajesh Kumar, Gunasekaran Manibalan, Rajabathar JothiRamalingam, Hemraj M. Yadav
Summary: The study successfully synthesized highly uniform copper and zinc oxide anchored nanoparticles on the surface of silica using a sol-gel method. Detailed structural and compositional analyses were carried out using X-ray diffraction, X-ray photoelectron spectroscopy, Laser Raman, field emission scanning electron microscopy, and transmission electron microscopy. The charge-discharge results showed excellent performance in specific capacitance at high current densities for the composite materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Debasrita Bharatiya, Biswajit Parhi, Sarat K. Swain
Summary: In this study, a GO-based ZnO, CuO, and Ag2O mixed ternary nanostructured composite was developed using a simple sol-gel synthesis approach, showing enhanced dielectric properties and potential charge storage applications. Physio-chemical characterization techniques were used to study the properties of the composite, highlighting its remarkable dielectric and charge storage capabilities.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Elizaveta P. Simonenko, Nikolay P. Simonenko, Eugeniy K. Papynov, Oleg O. Shichalin, Anton A. Belov, Ilya A. Nagornov, Philipp Yu Gorobtsov, Nikolay T. Kuznetsov
Summary: The potentials of producing ceramic materials Ta4HfC5 and Ta4HfC5-30 vol% SiC at relatively low temperatures (1700 and 1800 degrees C) were studied through reactive spark plasma sintering of highly dispersed powders Ta2O5-HfO2-C and Ta2O5HfO2-C-SiC. The introduction of silicon carbide not only stimulated the consolidation process and the formation of a solid solution with Ta4HfC5 composition, but also increased the oxidation resistance of the carbide ceramics. Oxidation resistance of the obtained ceramic materials was evaluated by thermal analysis and exposure to laser radiation in atmospheric air.
CERAMICS INTERNATIONAL
(2023)
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
Materials Science, Ceramics
Valentin Smeets, Ales Styskalik, Damien P. Debecker
Summary: Sol-gel chemistry tools enable the synthesis of functional materials in a controlled manner, with the use of hybrid heterogeneous catalysts showing promise in enhancing catalytic performance through combinations of inorganic and organic components.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Jan Mrazek, Sandip Bysakh, Roman Skala, Ales Mracek, Anirban Dhar, Ivo Barton, Ivan Kasik
Summary: A versatile sol-gel approach is presented for the synthesis of nanocrystalline (Eu0.5Y0.5)(2)Ti2O7. The crystallization kinetics, nucleation mechanism, and crystal structure were studied. The results showed a regular distribution of Eu3+ and Y3+ ions and provided key information for tailoring the structural properties of nanocrystalline powders for photonic applications.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Alvise Vivian, Loraine Soumoy, Luca Fusaro, Pierre Louette, Alexandre Felten, Sonia Fiorilli, Damien P. Debecker, Carmela Aprile
Summary: Mesoporous Ga-silicates were prepared using a sustainable and continuous aerosol synthesis procedure, showing record activity in the synthesis of solketal. The materials displayed outstanding turnover frequencies and selectivity, outcompeting other reference metallosilicate catalysts reported in literature. The most active catalyst showed stability under the selected reaction conditions through multiple catalytic cycles.
JOURNAL OF CATALYSIS
(2021)
Article
Materials Science, Ceramics
Jan Mrazek, Sona Kamradkova, Jiri Bursik, Roman Skala, Ivo Barton, Petr Varak, Yauhen Baravets, Ondrej Podrazky
Summary: We propose a sol-gel approach to produce low-phonon nanocrystalline (HoxY1-x)(2)Ti2O7, x = <0.01, 0.40>, which exhibits luminescence in the spectral range of 2000-3000 nm. The nanocrystalline structure and the impact of composition and phonon energy on luminescence properties were investigated. Ho3+ ions were found to be distributed regularly within the pyrochlore crystal lattice, resulting in an increase in the unit cell parameter. The maximum luminescence intensity at 2025 nm was observed for the composition (Ho0.03Y0.96)(2)Ti2O7. With an increasing content of Ho3+ ions, the radiative lifetime at 2025 nm regularly decreased from 6.32 to 0.22 ms. The samples had a phonon energy smaller than 700 cm(-1), allowing for an extended luminescence spectral range up to 2900 nm. Further optimization of the chemical composition can enhance the emission at 2860 nm, making it a promising thermally and chemically stable alternative to conventional fluoride or chalcogenide glasses.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Saswati Santra, Nirmalya S. Das, Biswajit Das, Diptonil Banerjee, Kalyan K. Chattopadhyay
CRYSTAL GROWTH & DESIGN
(2015)
Article
Materials Science, Multidisciplinary
Supratim Maity, Nirmalya Sankar Das, Saswati Santra, D. Sen, Kalyan Kumar Chattopadhyay
CURRENT APPLIED PHYSICS
(2016)
Article
Chemistry, Multidisciplinary
Biswajit Das, Samrat Sarkar, Rimpa Khan, Saswati Santra, Nirmalya Sankar Das, Kalyan Kumar Chattopadhyay
Article
Chemistry, Multidisciplinary
S. Santra, N. S. Das, N. Besra, D. Banerjee, K. K. Chattopadhyay
Article
Nanoscience & Nanotechnology
Saswati Santra, Nirmalya Sankar Das, Subrata Senapati, Dipayan Sen, Kalyan Kumar Chattopadhyay, Karuna Kar Nanda
Article
Nanoscience & Nanotechnology
D. Banerjee, P. Bhowmick, D. Pahari, S. Santra, S. Sarkar, B. Das, K. K. Chattopadhyay
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2017)
Article
Chemistry, Multidisciplinary
Saswati Santra, Debanjan Das, Nirmalya Sankar Das, Karuna Kar Nanda
Article
Nanoscience & Nanotechnology
Debanjan Das, Saswati Santra, Karuna Kar Nanda
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Materials Science, Multidisciplinary
S. Santra, A. Das, N. S. Das, K. K. Chattopadhyay
BULLETIN OF MATERIALS SCIENCE
(2018)
Article
Chemistry, Physical
S. Santra, N. S. Das, S. Maiti, K. K. Chattopadhyay
CHEMICAL PHYSICS LETTERS
(2014)
Article
Physics, Applied
Saswati Santra, Nirmalya Sankar Das, Dipayan Sen, Kalyan Kumar Chattopadhyay
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2014)
Article
Nanoscience & Nanotechnology
Marjeta Macek Krzmanc, Nina Daneu, Alja Contala, Saswati Santra, Khaja Mohaideen Kamal, Blaz Likozar, Matjaz Spreitzer
Summary: The hydrothermal epitaxial growth of SrTiO3 on Bi4Ti3O12 platelets enables the formation of novel nanoheterostructural SrTiO3/Bi4Ti3O12 platelets. During the topochemical conversion reaction, the Bi4Ti3O12 platelets are gradually replaced by SrTiO3, resulting in a stable and efficient photocatalyst without noble-metal doping or cocatalysts.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Laura I. Wagner, Elise Sirotti, Oliver Brune, Gabriel Groetzner, Johanna Eichhorn, Saswati Santra, Frans Munnik, Luca Olivi, Simone Pollastri, Verena Streibel, Ian D. Sharp
Summary: The performance of Ta3N5 as a photoanode for solar water splitting can be greatly enhanced by controlled Ti doping, resulting in reduced deep-level defects, increased photocurrent density, and shifted photocurrent onset potential. Ti4+ ions substitute Ta5+ lattice sites, reducing the concentrations of harmful nitrogen vacancies and Ta3+ states, thereby suppressing trapping and recombination. Ti doping also allows for tuning of electrical conductivity without increasing the oxygen donor content.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Saswati Santra, Debanjan Das, Nirmalya Sankar Das, Karuna Kar Nanda
ACS APPLIED ENERGY MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
P. Bhowmick, D. Banerjee, S. Santra, D. Sen, B. Das, K. K. Chattopadhyay
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.
