Article
Materials Science, Multidisciplinary
Maria T. Colomer, Karent J. Duarte, Angel L. Ortiz, D. Fabio Mercado, Luz M. Ballesteros-Rueda
Summary: Doping of Pr3+ in TiO2 sols leads to reduced dispersion and increased viscosity, with lower doping proportions showing minimal crystal growth and minor transformation upon moderate calcination. Photocatalytic activity is highest in xerogels doped with 0.5 mol% Pr3+ and deteriorates with higher doping levels, while calcination at 500 degrees C decreases photocatalytic efficiency. These observations are attributed to changes in polymorph composition, crystal size, bandgap, and specific surface area with varying dopant content.
MATERIALS CHARACTERIZATION
(2021)
Article
Optics
T. Netolicky, L. Benes, K. Melanova, S. Slang, B. Frumarova, J. Oswald, T. Wagner
Summary: A series of novel garnet nanocrystals Gd3ScxGa5_xO12 (x = 0-2) doped with fixed Er3+ content were synthesized and their properties were investigated. It was found that the incorporation of Sc3+ into the octahedral site of the garnet host enhances the photoluminescence properties. The substitution of Ga3+ by Sc3+ may affect the crystal field surrounding Er3+.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Physical
Jingjian Zhou, Jing Huang, Huai Chen, Archana Samanta, Jan Linnros, Zhenyu Yang, Ilya Sychugov
Summary: The study presents a cost-effective method for synthesizing Si quantum dots with superior optical properties compared to those from other precursors, which could be beneficial for applications like photovoltaics.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Environmental Sciences
Tehmina Akhtar, Habib Nasir, Effat Sitara, Syeda Aqsa Batool Bukhari, Sharif Ullah, Rana Muhammad Arslan Iqbal
Summary: Cu-doped TiO2 photocatalyst was prepared by sol-gel method and characterized by various techniques. The catalyst demonstrated efficient degradation of NB under visible light and showed good stability for reusability.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Applied
Lu Zhang, Bolin Zheng, Junyi Zhai, Tao Lin
Summary: In this study, rare earth-doped TiO2 thin films were fabricated by a sol-gel method and it was discovered that the addition of Sn element can significantly reduce the annealing temperature and enhance the photoluminescence intensity of the films.
JOURNAL OF RARE EARTHS
(2023)
Article
Chemistry, Physical
Xinyang Zhang, Zhaofeng Chen, Junying Liu, Sheng Cui
Summary: A sol-gel method was used to synthesize and characterize ZnFe2O4 nanoparticles with a specific surface area of about 23 m(2)/g. By adjusting the drying and sintering conditions as well as the ratio of citric acid to metal ions, the optimal conditions for the highest emissivity of 0.934 were identified at 800 degrees C with a sintering temperature of 900 degrees C and a C/M ratio of 1:1.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Materials Science, Ceramics
K. Park, H. Kim, G. W. Jung, S. Y. Gwon, D. H. Kim
Summary: Ce3+ and Pr3+ co-doped Lu3Al5O12 phosphors were synthesized by the sol-gel process. Their crystal structure, photoluminescence properties, and energy transfer from Ce3+ to Pr3+ were studied. The phosphors showed green-yellow and red emission, with the red emission intensity enhanced by the incorporation of Pr3+.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Md. Kamrul Hossain, Md. Mufazzal Hossain, Shamim Akhtar
Summary: TiO2 and Cr-TiO2 nanoparticles were synthesized using the sol-gel method and were found to have photocatalytic activity for the degradation of p-chlorophenol (PCP) under UV irradiation. The degradation efficiency of PCP was highest at the lowest initial concentration and the optimal conditions for TiO2 and Cr-TiO2 NPs were determined to be a catalyst dosage of 2.0 g/L, acidic pH, and UV irradiation for 90 min. The rate constants for the degradation reaction of PCP were found to be 0.0075 and 0.0122 min-1 for pure TiO2 and Cr-TiO2 NPs, respectively.
Article
Materials Science, Ceramics
Smita Dey, Asit Kumar Kar
Summary: The study investigates the structural and optical properties of polypyrrole-ZnO composites with different amounts of ZnO, finding that the addition of ZnO slightly affects the conjugation of the polymer chain and causes a blue shift in the pi-pi* transition. The research uses a FRET model to theoretically predict the energy transfer efficiency, Forster radius, and separation between donor and acceptor, showing that tuning the ZnO content can adjust the emission properties of the PPy-ZnO composite.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Maxime Royon, Francis Vocanson, Damien Jamon, Francois Royer, Emmanuel Marin, Adriana Morana, Cosimo Campanella, Aziz Boukenter, Youcef Ouerdane, Yves Jourlin, Sylvain Girard
Summary: The study demonstrates that the Rhodamine 6G-doped TiO2-SiO2 sol-gel films can maintain strong photoluminescence signals even after exposure to gamma-rays. Additionally, the refractive index decreases with increasing dose, and chemical changes indicate a photo-induced polymerization process, suggesting potential applications of the material in radiation-rich environments for sensing purposes.
Review
Chemistry, Physical
Grigory B. Veselov, Aleksey A. Vedyagin
Summary: This review provides an overview of the synthesis and structural tuning strategies of carbon xerogels, including the influence of sol-gel synthesis conditions, the possibility of using different precursors for organic aerogel preparation, optimization of gel drying and pyrolysis conditions, and surface modification of carbon xerogels by introducing various functional groups and heteroatoms. Furthermore, the methods for preparing metal-doped carbon xerogels and their potential applications are briefly mentioned.
Article
Optics
Vijay Singh, Pooja Rohilla, Sumandeep Kaur, A. S. Rao
Summary: In this study, Tb3+ activated Na3YSi2O7 phosphors with different amounts of Tb3+ ions were developed using sol-gel process. The structural analysis and luminescence behavior analysis confirmed the potential application of these phosphors in plasma display panels.
Article
Optics
Vijay Singh, Sumandeep Kaur, Arti Yadav, A. S. Rao
Summary: A series of calcium aluminate phosphors doped with Tm3+ ions at various molar concentrations were prepared via sol-gel route. Various characterizations were conducted to identify the structural and luminescence properties. The prepared phosphors exhibited excellent blue emission under n-UV excitation, making them potentially suitable for application as blue emitters in white LEDs.
Article
Optics
Vijay Singh, Rajamouli Boddula, G. N. Nikhare, Ji Bong Joo
Summary: The study successfully synthesized orange-red emitting Eu3+ doped CaAl4O7 phosphors with desired phase and good photoluminescence properties. The phosphors exhibit sharp emission peaks and high color purity in the orange-red region, making them suitable for applications in the field of luminescent materials.
Article
Biochemistry & Molecular Biology
Nasrollah Najibi Ilkhechi, Mahdi Mozammel, Ahmad Yari Khosroushahi
Summary: This study synthesized ZnO, TiO2, and ZnO-TiO2 nanoparticles using the sol-gel method, with ZnO-TiO2 showing higher antifungal activity against A. flavus. The nanostructures inhibited 100% of spore production at a concentration of 300 μg/mL. Additionally, ZnO-TiO2 nanoparticles exhibited both spherical and pyramidal shapes with grown particles on the surface.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Muhammad Haris Azhar, Tayyaba Noor, Naseem Iqbal, Neelam Zaman, Sarah Farrukh
Summary: This study uses a novel adsorbent Metal Organic Framework (MOF) and its composites to adsorb CO2. Experiment results show that 5 wt% g-C3N4/Ni-BDC MOF exhibits the highest adsorption capacity.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Ayumu Nodera, Shinya Aikawa
Summary: In this study, a CO2 sensor capable of low-temperature operation was fabricated using an open-channel-type thin-film transistor structure with a polar surface of an oxide semiconductor. The sensor showed a sensitivity 2.9 times greater than that under an inert N2 atmosphere at an operating temperature of only 150 degrees C. The results suggest that TFTs fabricated with polar surfaces of oxide semiconductors are useful for gas-sensing applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Bindhyabasinee Mishra, Jyotirmayee Nanda, Subhra S. Brahma, K. J. Sankaran, R. Sakthivel, S. Ghadei, S. Suman
Summary: In this study, a series of polycrystalline mixed spinel ferrites were synthesized and characterized. The Mg0.5Zn0.5La0.05Fe1.95O4 ferrite showed the best response and recovery time, indicating its potential as a material for LPG sensing.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Review
Materials Science, Multidisciplinary
Rajashree Panda, Mitrabhanu Behera, A. Arun Kumar, Dhananjay Joshi
Summary: Rare earth doped aluminate-based phosphors are preferred over sulfide-based phosphors. The unique luminescence features of lanthanide-based materials are being utilized for multidisciplinary research and inventive applications. The past years have seen an increase in research interest in aluminate-based phosphors, leading to improvements in their long-lasting phosphorescence and phosphorescence efficiencies. Combustion synthesis route is an efficient technique for preparing nano-phosphor due to its simplicity and cost-effectiveness.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Review
Materials Science, Multidisciplinary
Younes Zohrabi
Summary: Water is essential for the survival of living organisms, but industrialization has led to contamination of water sources with heavy metals and harmful pollutants. Magnetic nano ferrites have shown potential in effectively removing heavy metals from water due to their magnetic characteristics, high surface area, surface active sites, chemical stability, and ease of modification. This review explores recent literature on the synthesis and application of magnetic ferrites for removing heavy metals from water, aiming to provide a comprehensive understanding for future research.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Baolin Liu, Chenxin Xie, Guanglei Qian, Lishan Zhou, Chenglei Zhang, Lingzhi Zhu
Summary: In this study, a self-cleaning CuO-PdO-Pd/Ti membrane has been developed for the removal of small-sized pollutants. The membrane exhibited superior removal ability and permeability compared to conventional membranes, and maintained high efficiency even after repeated tests. The CuO-PdO-Pd/Ti membrane also showed excellent removal efficiency when treating real wastewater, indicating its high potential for practical applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Debabrata Panda, Akhilesh Kumar Sahu, Krunal M. Gangawane
Summary: A variety of hierarchical nanoporous silica aerogels were synthesized from well-dispersed silica sols, exhibiting diversified particle distributions and excellent thermal properties. The silica aerogels showed low thermal conductivity and high-temperature resilience. Surface modification and dilution of silica sols further improved the thermal resistance of the aerogels. The resilient skeleton structure developed from tiny particles effectively restricted heat dissipation and maintained the porous network at high temperatures.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Hardy Shuwanto, Hairus Abdullah, Young Ku, Jenni Lie
Summary: In this study, a defective system of V-doped Fe2O3 with Pt as a cocatalyst was used for photoelectrochemical water oxidation. The defects in the VFPt-2.5 photoanode were characterized by XPS and EPR analyses. The SEM and TEM analyses revealed that the electrodeposited V-doped alpha-Fe2O3 had a nanosized morphology with an average diameter of 12 nm and a thickness of 300 nm. Under light irradiation, the VFPt-2.5 photoanode achieved a remarkable onset potential and photocurrent density. The stability test showed that Pt helped overcome the charge recombination caused by surface states.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Reza Gholipur, Hemin Mohammed Ali Khalifa, Khatereh Afrouzeh
Summary: Developing doped cathode materials is crucial for achieving low cost and high-performance energy storage. LiMn1.977(Ce, Cu, Ti, CeCuTi)0.023O4 nanoparticles show unmatched high structural stability, capacity, and safety during charge/discharge cycles. Ti-doped LiMn2O4 cathode calcined at 700 degrees C demonstrates the highest capacity and retention when multi-walled carbon nanotubes are added. The presence of titanium increases the porosity for reversible lithium storage and the dielectric constant.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
T. Amutha, M. Rameshbabu, S. Sasi Florence, G. Ramalingam, S. Muthupandi, K. Prabha
Summary: This research provides an overview of the structural analysis and magnetic characteristics of dilute magnetic semiconductor oxides (DMSOs) based on binary metal oxide nanomaterials with different ferromagnetic or paramagnetic dopants. The coprecipitation method was used to create nanoparticle samples, and the results showed certain ferromagnetic behavior and increased magnetic properties.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Preeti Kumari, Vipul Srivastava, Ramesh Sharma, Hamid Ullah
Summary: In this study, the rare-earth ferrites perovskite RFeO3 (R = Pr, Nd) were investigated for their various properties including structural, electronic, magnetic, optical, thermodynamic, and thermoelectric behavior. The study found that these materials exhibit half-metallic behavior under certain conditions, and their optical and thermoelectric properties were evaluated, making them potential candidates for spintronic devices and UV absorbers.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Shuting Yuan, Tianchi Wang, Tian Feng, Jian Kong
Summary: In this study, Fe/Fe3O4/C hollow electromagnetic wave absorbers were prepared using hollow ceiba fibers as templates. The proposed hollow structure could reflect and scatter electromagnetic waves multiple times, leading to significant energy consumption. The impedance matching of magnetic materials and biochar enabled the joint absorption of magnetic and dielectric losses to absorb electromagnetic waves.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
G. R. Mamatha, B. R. Radha Krushna, J. Malleshappa, S. C. Sharma, Satish Kumar, C. Krithika, Nandini Robin Nadar, Dileep Francis, K. Manjunatha, Sheng Yun Wu, H. Nagabhushana
Summary: Nanostructured SrAl2O4:Tb3+/M (M = Li+, Na+, K+, Ca2+, Bi3+) green nanophosphors were synthesized using an environmentally friendly combustion process and Areca nut as a sustainable fuel source. The introduction of alkali metal co-dopants optimized the luminescent intensity and showed potential for data security applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Tomoyuki Tachibana, Akihiro Yabuki
Summary: A one-step thermal-reduction method was used to synthesize copper sulfide films with different compositions and pillar-like structures, through adjusting the sulfur ratio and incorporating excess sulfur during the synthesis process.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Manal A. Mahdy, I. K. El Zawawi, Manal Mounir Ahmad
Summary: Pure PVA and its nanocomposites with CuO and/or CoFe2O4 films were prepared and characterized. The optical properties of the films can be modulated by controlling the percentage of CuO and/or CoFe2O4. The nanocomposites exhibit good ferromagnetic behavior, making the prepared films potentially useful in antenna system miniaturization and flexible magneto-electronic applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)