Article
Materials Science, Multidisciplinary
Zhi-He Dou, Ting-An Zhang, Shi-Gang Fan, Qiu-Yang Huang, Jin-Liang Zhang, Hong-Yu Xiao, Nan Fu
Summary: The NdB6 ultra-fine powders were prepared by combustion synthesis method using B2O3, Nd2O3, and Mg powders as raw materials. The characterization results showed that the combustion products consist of NdB6, MgO, and a few Mg3B2O6 and Nd2B2O6, while the leached products consist of single NdB6 phase.
Article
Chemistry, Applied
Martin Timusk, Triin Kangur, Janis Locs, Andris Sutka, Martin Jarvekulg
Summary: The temperature-dependent behavior of alcohol surface tension and the nanoporous nature of sol-gel derived alcogels provide a quick and simple pathway to obtain low-density silica materials without the need for specialized drying conditions. Granular silica with markedly lower density can be produced through simple combustion of sol-gel derived alcogels despite high-temperature annealing.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Jiamao Li, Minghu Wei, Chenghao Wu, Shengdao Tang
Summary: The 7CT-3SNA ceramics synthesized via the sol-gel auto combustion method exhibit good sintering activity and potential for microwave applications.
JOURNAL OF RARE EARTHS
(2021)
Article
Chemistry, Physical
Hao Shen, Xinyang Li, Chenguang Hu, Zhen Wang, Xiaoye Hu, Yue Li, Jian Yan
Summary: Boride-based ultra-high temperature ceramics, specifically zirconium diboride (ZrB2) powders with nanostructures, were successfully synthesized using a combination of carbothermal reaction and sol-gel method. Oleic acid was found to be the most effective dispersant for obtaining high purity ZrB2 powder with nanoscale dimensions.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Ceramics
F. Carrillo Romo, A. Alcantar Mendoza, A. Garcia Murillo, M. Diaz Cruz
Summary: In this study, ytterbium oxide (Yb2O3) powders with europium (Eu3+) were synthesized using the epoxide-driven sol-gel process. Different molar ratios of Yb2O3-europium xerogels were prepared and heat-treated at 1273 K to obtain dense crystalline material. The powders were characterized using XRD and SEM, and photoluminescent studies were conducted to investigate their structural and luminescent properties. After heat treatment, the powders exhibited spherical particles and distinct reflections indicating a cubic-type crystalline structure, with crystallite sizes ranging from 14 to 30 nm. Luminescence studies revealed emission bands between 550 and 700 nm attributed to the D-5(0) -> F-7(2) transition level of europium ion.
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Applied
Rohit Jasrotia, Nisha Kumari, Ritesh Verma, Saad M. Suman, Sachin Kumar Godara, Jahangeer Ahmed, Saad M. Alshehri, Bidhan Pandit, Sanjay Kumar, Pradip K. Himanshi, Shubham Sharma, Kirti, Pradip K. Maji
Summary: Zn0.7Mg0.3NdxFe2-xO4 ferrite nanoparticles were synthesized using the sol-gel auto-combustion technique. Various characterization techniques were used to investigate their structure, morphology, and magnetic properties.
JOURNAL OF RARE EARTHS
(2023)
Article
Materials Science, Ceramics
Yaseen K. R. Shariff, Harish K. Choudhary, Vijay Khopkar, Ankit Yadav, R. Madhusudhana, Balaram Sahoo
Summary: This study reports the synthesis mechanism of Ba-Sr hexaferrite ceramic powders, revealing different phase evolution under various annealing conditions associated with the ionic radii difference, leading to the presence of multiple phases. The growth of hexagonal-shaped particles with varied sizes suggests the influence of ionic radii difference on the sinterability of the samples. The research provides a better understanding of the synthesis mechanism of Ba-Sr hexaferrite samples.
CERAMICS INTERNATIONAL
(2021)
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
Materials Science, Ceramics
Sivasankar Koppala, Shiny Punalur John, Ramdas Balan, Budigi Lokesh, Sathishkumar Munusamy, Parasuraman Karthikeyan, Chirag Batukbhai Godiya, Suresh Yadav Chandragiri, Tejraj M. Aminabhavi, Kaijiao Duan, Kangqiang Li, Lei Xu, Yi Xia, Sasikumar Swamiappan
Summary: In this study, a novel strontium zinc silicate ceramic powder Sr-Hardystonite was successfully prepared using a citric acid-succinic acid assisted glowing combustion method. The material exhibited a single phase structure, good surface morphology, bioinertness, and positive effect on bone cells.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
S. Zahra, F. Deeba, M. Irshad, A. Sheikh, S. D. Zahra, A. M. Khan
Summary: Ultra-fine titania powders were synthesized through sol-gel method using a surfactant-free nonaqueous approach. The crystal structure and thermal stability of metal oxide particles were analyzed using X-ray diffraction technique and differential scanning calorimetry, while the purity of powders and surface morphology were studied using infrared spectroscopy and field emission scanning electron microscopy. The prepared titania samples were used for reducing cyanide, BOD, COD, TDS, color, and pH of industrial wastewater.
DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Yawen Deng, Yan Yang, Shuai Zhao, Jiahao Lin, Jing Gong, Yaru He, Xiaojiang Long, Suihu Dang, Yunfeng Bai
Summary: This report proposes a laser annealing strategy using a 980 nm laser to replace the high-temperature furnace annealing in sol-gel combustion synthesis. The laser annealing improves the preparation efficiency of rare earth doped phosphor and synthesizes phosphors with the same crystal structure and spectral properties as those obtained by furnace annealing. Moreover, the phosphors can be heated into crystals using a high-power 980 nm laser.
Article
Materials Science, Multidisciplinary
Thanit Tangcharoen, Wantana Klysubun, Chanapa Kongmark
Summary: Nanocrystalline NiO/CuO solid solutions and heterostructured powders were prepared using a sol-gel auto combustion method. The structures, morphologies, optical, and magnetic properties of the samples were investigated. It was found that a small addition of CuO in NiO enhanced the formation of rock salt CuxNi1-xO solid solutions. The coexistence of NiO rock salt and CuO tenorite phases was observed in composites with CuO mole fractions of 20% <= m <= 95%. The composites exhibited strong adsorption in the visible and ultraviolet spectral regions, and the superparamagnetism of NiO could be tuned to ferromagnetism with a small addition of CuO. The photocatalytic degradation efficiencies of various dyes reached 92%-97% under sunlight irradiation.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Jefferson A. Lopes Matias, Evanimek B. Sabino da Silva, Rafael A. Raimundo, Djalma Ribeiro da Silva, Joao B. L. Oliveira, Marco A. Morales
Summary: Nanocrystalline Co sillenite-Co3O4 composites were prepared by combustion and sol-gel methods, and further characterized by various techniques. The sillenite phase exhibited nanostructured with similar content in products from both synthesis methods, showing both ferromagnetic and antiferromagnetic properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Eduarda Firmino, Luana da Silva Oliveira, Felipe Cabral Borges Martins, Jose Carlos S. Filho, Helliomar Pereira Barbosa, Acacio A. Andrade, Thais Karine de Lima Rezende, Renata C. de Lima, Marco A. Couto dos Santos, Marcio Sousa Goes, Jefferson Luis Ferrari
Summary: This study utilized luminescent materials with red emission characteristics, showing strong photoluminescence both in isolated material and impregnated in digital prints, which are essential for obtaining higher resolution images of latent fingerprints.
Article
Chemistry, Inorganic & Nuclear
Andrea Rosati, Michele Fedel, Stefano Rossi
Summary: A set of NIR reflective nano-pigments with YIn0.9Mn0.1O3-ZnO stoichiometry were synthesized using sol-gel route. Different temperatures of calcination produced three ochre pigments and two blue shades, with the thermal properties and chemical changes monitored through TGA, DSC, FT-IR, XRD, and STEM analysis. The synthesized pigments exhibited NIR reflectance ability and were color-typed according to the CIE-1976L*a*b* method.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
