Article
Engineering, Environmental
Shuo Liu, Mohammad Moein Mohammadi, Mark T. Swihart
Summary: This review provides an overview of flame aerosol synthesis of catalysts, including the mechanisms, applications, and recent progress. By controlling process parameters and reactor configuration, catalyst structures can be tailored. The advantages, limitations, and future research directions of flame-made catalysts are also discussed in the review.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Ceramics
Erdem Tevfik Ozdemir, Serdar Yildirim, Berk Ozler, Tuncay Dikici, Mustafa Erol, Metin Yurddaskal
Summary: Manganese ferrite nanoparticles were synthesized using flame spray pyrolysis, and the effects of annealing on the properties of the nanoparticles were investigated. XRD analysis confirmed the spinel ferrite structure of the synthesized nanoparticles. The nanoparticles exhibited hemispherical-cubic shape with an average size below 100 nm. XPS analysis revealed the chemical bond structures of the nanoparticles. The saturation magnetization decreased with increasing annealing temperature, while coercivity increased.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Chemistry, Physical
Tomoyuki Hirano, Takama Tsuboi, Eishi Tanabe, Takashi Ogi
Summary: Metal oxide supports have attracted attention in improving the performance of fuel cells. In this study, niobium-doped tin oxide nanoparticles were synthesized with a network structure and platinum catalysts were deposited on them. The study evaluated the effect of different particle formation processes on the structure of the flame-made Pt/NTO particles. The flame spray pyrolysis method was found to produce NTO with uniformly dispersed Pt, and the resulting particles showed high electrochemical surface area and mass activity values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Onochie Okonkwo, Sukrant Dhawan, Pratim Biswas
Summary: In this study, alumina nanoparticles were synthesized using a spray flame aerosol reactor and characterized using various techniques to determine their properties. The effects of precursor, dispersion oxygen, and sheath oxygen rates on the characteristics of synthesized alumina were investigated. The results suggest that the dispersion oxygen rate offers the best control of the surface area, while the precursor rate controls the crystal phase proportions.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Yujia Liang, Kyojin Ku, Yulin Lin, Lei Yu, Jianguo Wen, Eungje Lee, Joseph Libera, Jun Lu
Summary: Flame-spray-pyrolysis is a robust and scalable process for synthesizing particles, commonly used in manufacturing nickel-rich cathode materials. High flame temperature can lead to lithium loss and structural degradation, but enhancing the process and adding a rapid quench step can increase the concentration of the layered phase.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Asha Hind, Parutagouda Shankaragouda Patil, Neelamma B. Gummagol, B. V. Rajendra
Summary: Annealing treatment enhanced the crystallinity and transparency of Sn0.97La0.03O2 films, while reducing the defect density. It has a significant impact on the nonlinear optical and electrical properties of the films.
Article
Nanoscience & Nanotechnology
Martin T. Matter, Leonida Maliqi, Kerda Keevend, Stefanie Guimond, Judith Ng, Efe Armagan, Markus Rottmar, Inge K. Herrmann
Summary: Dental implant failure is a prevalent issue globally, with current surface modifications facing challenges in achieving sufficient integration and preventing biofilm formation. Introduction of nanostructures on the surface shows promise in improving implant-tissue contact, but existing coating processes are limited in versatility and cost. A highly modular single-step method has been developed to produce multicomponent porous bioactive nano-structured coatings on implants, with potential applications in dental implantology and beyond.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
A. K. Choudhary, A. Roy, P. K. Yadav, S. B. Rai
Summary: In this study, we investigated the photoluminescence emission properties of Eu3+ doped CaAl2O4 in the presence of Li+, Mg2+, and Bi3+ ions. It was found that the 0.01Eu3+:CaAl2O4 phosphor emits intense red emission at 616 nm when excited with 393 nm (Eu3+ line) and 262 nm (charge transfer band). The emission intensity is significantly enhanced in the presence of Li+ doping, while it is decreased with Bi3+ doping. Moreover, the 0.01Eu3+:CaAl2O4 phosphor exhibits highly pure red color in the warm light region.
Article
Thermodynamics
M. F. B. Stodt, Jan Derk Groeneveld, Lutz Maedler, Johannes Kiefer, Udo Fritsching
Summary: This study investigates the occurrence of in-flight droplet microexplosions (mu-explosions) during flame spray pyrolysis and confirms the findings through single drop experiments. It is found that there are distinct mu-explosions happening at high frequencies during the synthesis of iron oxide nanoparticles. This finding is significant for understanding the role and relevance of mu-explosions in the production and formulation of functional nanoparticles.
COMBUSTION AND FLAME
(2022)
Article
Engineering, Chemical
Adrian Toman, Wojciech Adamus
Summary: Combustible aerosols are important in industrial processes but also pose explosion hazards. To assess the explosion risk and meet the ATEX directive requirements, information on flammable and explosive properties of aerosols is essential. Unlike gases and dusts, there are no standard procedures for obtaining quantitative information. Factors such as concentration, droplet size, and temperature influence the explosion dynamics of aerosols, and their generation methods also play a role. A prototype apparatus was designed and used to determine the basic explosion parameters of liquid flammable aerosols, demonstrating the relationship between aerosol concentration and explosion parameters.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2023)
Article
Optics
M. A. Wani, S. J. Dhoble, R. M. Belekar
Summary: The current paper synthesized LiAlO2 phosphor doped with rare-earth elements Tb3+, Eu3+, and Dy3+ using microwave-assisted solution combustion synthesis method and studied their spectroscopic properties through XRD, FT-IR, TG-DTA, and SEM. The photoluminescence excitation and emission spectrum of the doped phosphors were investigated under different sintering temperatures and dopant concentrations. The results showed unique emission peaks for each dopant under specific excitation conditions.
Article
Engineering, Chemical
Tomoyuki Hirano, Jun Kikkawa, Daisuke Shimokuri, Asep Bayu Dani Nandiyanto, Takashi Ogi
Summary: The paper describes the synthesis of a mixture of tungsten metal and oxide nanoparticles via a fuel-rich tubular flame process, with a yield of 8.64% and nanoparticles exhibiting a sinter-necked structure. The oxygen content of the synthesized mixtures decreased from 16.80% to 5.56% after a mild-reduction-based post-heating treatment while retaining the particle size.
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
(2021)
Article
Chemistry, Physical
Milad Kohi Habibi, Seyed Mahdi Rafiaei, Amir Alhaji, Maryam Zare
Summary: Ce-doped ZnAl2O4: x% Ce particles were synthesized and their properties were studied, showing that the calcination temperature significantly affects microstructures and luminescence characteristics, while the concentration of Ce ions influences photoluminescence behavior intensity.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Polymer Science
Vishnu V. Jaiswal, D. Haranath
Summary: An easy method for industrial production of long afterglow phosphor nanocomposites in the form of small beads has been developed, where the shape of phosphor particles plays a crucial role in the homogeneity of dispersion. These phosphor-embedded beads show optimum performance with an excitation wavelength of 375 nm and exhibit bright green luminescence.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Chemistry, Physical
Abhijeet R. Kadam, Samiksha B. Dhoble, Girish C. Mishra, A. D. Deshmukh, S. J. Dhoble
Summary: In this study, Dy3+ ion-doped SrYAl3O7 phosphors were prepared using a solution combustion route and showed potential for near-ultraviolet excitation in LED lighting. Photoluminescence characterization revealed emission peaks in the blue and yellow regions of the spectrum. The crystal structure and morphology of the phosphor sample were analyzed, and thermoluminescence studies were performed to calculate trapping parameters.
JOURNAL OF MOLECULAR STRUCTURE
(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)