Article
Chemistry, Physical
Y. Hirayama, M. Shigeta, K. Takagi, K. Ozaki
Summary: The composition of Ni-Cu alloy nanopowder prepared by a thermal plasma process was investigated. The experimental and computational studies showed that the nanoparticles in the powder have a homogeneous composition, but the composition distribution of the powder varies spatially.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Samira Elaissi, Amira Ben Gouider Trabelsi, Fatemah Alkallas, Tahani A. Alrebdi, Kamel Charrada
Summary: A three-dimensional numerical model was developed to simulate a time-dependent, turbulent thermal plasma jet for synthesizing silicon nanopowder. The simulation results demonstrate that the plasma jet significantly affects the dispersion of nanoparticles, and increasing the carrier gas injection velocity leads to a decrease in particle velocity and temperature distribution. Additionally, the behavior of nanoparticles is significantly influenced by the upstream flame.
Article
Materials Science, Ceramics
Jamila S. Alzahrani, Manal Hessien, Z. A. Alrowaili, Imen Kebaili, I. O. Olarinoye, Halil Arslan, M. S. Al-Buriahi
Summary: In this study, six new nanopowders were fabricated and characterized, and their structural, optical, and radiation characteristics were measured and analyzed. The results showed that these nanopowders have potential applications in radiation shielding.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Andrey Samokhin, Nikolay Alekseev, Aleksey Astashov, Aleksey Dorofeev, Andrey Fadeev, Mikhail Sinayskiy, Yulian Kalashnikov
Summary: The possibility of obtaining composite micropowders of the W-C-Co system with a spherical particle shape having a submicron/nanoscale internal structure was experimentally confirmed. The method involved plasma-chemical synthesis to produce nanopowders, followed by spray drying to obtain dense microgranules, and finally plasma treatment to achieve spherical micropowders without internal cavities. Experiment results showed that the plasma treatment process parameters significantly influenced the dispersity, phase, and chemical composition of the spherical micropowders.
Article
Physics, Multidisciplinary
Ahmed Kadari, Khaled Aissaoui, Intesar A. El-Mesady
Summary: Zn2SnO4 nanostructures doped with different rare earth elements (Dy3+, Sm3+, Yb2+, Eu3+ and Gd2+) were synthesized using sol-gel method. The crystallographic nature of the prepared materials was confirmed by X-Rays Diffraction (XRD). The particle sizes were calculated to be approximately 24 nm. The chemical bond types were identified through Fourier Transform Infrared spectroscopy (FTIR). The dopants affected the absorbance spectra, with a decrease in energy band gap (E (opt)) from 3.89 eV to 2.80 eV for direct transitions and a range of 3.93 to 2.25 eV for indirect transitions. The Urbach energies (E-U) were found to be within the range 0.70-0.42 eV. These results suggest that the suggested dopants can be utilized in the correct form in industrial applications.
Article
Engineering, Environmental
Chengyuan Duan, Manabu Tanaka, Masahiro Kishida, Takayuki Watanabe
Summary: The translation discusses the experimental results and decomposition mechanism of highly-concentrated pyridine treatment using a novel mist-type water thermal plasma torch. The results show efficient decomposition of pyridine, producing valuable gas products and a small amount of liquid by-products. Water plasma demonstrates significant potential in treating non-biodegradable industrial liquid waste.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Multidisciplinary Sciences
G. Chandra Sekhar, P. Thimothy, Raviteja Surakasi, Nadeem A. Khan, Sasan Zahmatkesh
Summary: This study investigates the physical-thermal properties of nanofluids made from graphene powder, propylene glycol, and water. Different ratios of propylene glycol and water were mixed to form nanofluids, and graphene was added at different concentrations. The study examines the viscosity, density, thermal conductivity, and specific heat of the nanofluids. The results show that the addition of graphene nanopowder increases the density and thermal conductivity of the nanofluids, while viscosity and specific heat decrease with increasing temperature.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Physical
Andrius Tamosiunas, Dovile Gimzauskaite, Mindaugas Aikas, Rolandas Uscila, Kestutis Zakarauskas
Summary: In this experimental study, waste glycerol from industrial bio-diesel production was converted to syngas using water vapor DC thermal arc plasma. Pure water vapor was used as a gasifying agent to avoid unwanted byproducts and obtain higher concentrations of hydrogen and carbon monoxide. The study found that the highest process efficiency and lower specific energy requirement were achieved at the H2O/C3H8O3 ratio of 1.9.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Electrical & Electronic
J. J. Tibaijuka, J. S. Nyarige, M. Diale, N. R. Mlyuka, M. E. Samiji
Summary: This study investigated the effect of thermal treatment on the deposition of spectral selective solar absorber multilayer films. The results showed that post-deposition processing at elevated temperatures, particularly in argon-oxygen ambient, influenced the structural and optical properties of prior-deposited Cr thin films.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
A. A. Al-Muntaser, Rami Adel Pashameah, Kamal Sharma, Eman Alzahrani, S. T. Hameed, M. A. Morsi
Summary: Hybrids of polymer-perovskite are attractive materials for electric devices and optoelectronic applications due to their improved physical and chemical properties. Experimental results show that these hybrid materials have potential for optical shielding, photosensors, advanced optoelectronics, thin film capacitors, and high-density storage devices.
Article
Chemistry, Physical
Asmae Bouziani, Jongee Park, Abdullah Ozturk
Summary: Fluorinated Bi2O3 nanopowder was prepared by fluorination and thermal shock of alpha-Bi2O3 nanopowder, leading to changes in crystal structure, optical properties, and photocatalytic efficiency. The substitution of O2- with F- was confirmed, altering Bi atom coordination and band structure, resulting in improved charge carrier mobility and enhanced photocatalytic performance upon F insertion. Thermal shock from different temperatures influenced the photocatalytic activity of F-Bi2O3 nanopowder, with the best performance observed after 180 min of irradiation at 500 degrees C.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Materials Science, Coatings & Films
F. Blanchard, B. Baloukas, M. Azzi, F. Ben Ettouil, J. E. Klemberg-Sapieha, C. Moreau, L. Martinu
Summary: As the operating temperatures increase, the thermal barrier coatings may be less efficient in protecting the underlying metallic components. A study compared the optical performance of atmospheric plasma sprayed (APS) and suspension plasma sprayed (SPS) yttria-stabilized zirconia (YSZ) coatings and found that SPS samples offer higher radiation blocking properties due to a more uniform distribution of pores with a smaller average pore diameter.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Gillsang Han, Minje Kang, Yoojae Jeong, Sangwook Lee, Insun Cho
Summary: A ternary-Zn2SnO4/binary-ZnO radially heterostructured nanowires array has been synthesized using a convenient thermal evaporation and post-annealing method, demonstrating superior charge-separation and -transport properties.
Article
Chemistry, Inorganic & Nuclear
Dianpu Ma, Lang Zhang, Juntao Hu, Zewei Fu, Tan Luo, Di Yang, Dong Fang, Jun Li, Jubo Peng, Yingwu Wang
Summary: Metal oxide semiconductors with hollow structures, such as Zn2SnO4/SnO2 nano-cubes, show potential for improving gas sensing performance, particularly in detecting ethanol and formaldehyde. The repeatability, stability, ambient humidity, and enhancement mechanism of this sensor are also systematically discussed.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Steven M. Smith, Lun Feng, William G. Fahrenholtz, Gregory E. Hilmas, Laura Silvestroni
Summary: The thermal and electrical properties of TiB2 ceramics were significantly affected by the addition of varying amounts of CrB2, showing a decrease in thermal diffusivity, an increase in anisotropy in thermal expansion coefficients, and a decrease in electrical conductivity with increasing Cr content.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Madeeha Riaz, Manahil Najam, Hina Imtiaz, Farooq Bashir, Tousif Hussain
Summary: This study focuses on the structural and biological analysis of Zn-Cu based biodegradable alloys for orthopedic applications. The results indicate that the alloys have good electrical conductivity and biocompatibility, with potential for promoting bone growth and healing process. Additionally, the alloys exhibit a low corrosion rate and improved corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rijo Rajeev, Sk Safikul Islam, Anitha Varghese, Gurumurthy Hegde, Suryasarathi Bose
Summary: In this study, a facile and selective electrochemical sensor was developed for the sensing of guanosine. The sensor utilized a unique porous structure and ordered framework, enabling linear detection of guanosine concentration in the range of 0.123-720 μM under specific conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rafael V. M. Freire, Dominique Celeste de A. Dias, Jose Yago Rodrigues Silva, Dayane Kelly Dias do Nascimento Santos, Larissa T. Jesus, Ricardo O. Freire, Severino A. Junior
Summary: This study reports the extraction and isolation of euphol from nature, its adsorption in nanosized ZIF-8, and the efficacy of this system against cancer cells. Experimental and simulation results show that ZIF-8 can enhance the effectiveness of euphol against cancer cells and selectively target cancer cells.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Manal A. Awad, Awatif A. Hendi, Maha M. Almoneef, Maymunah Alwehaibi, Khalid M. Ortashi, Wadha Alenazi, Fatimah S. Alfaifi, Shareefa Alahmariye, Asma Alangery, Warda Ali Alghoubiri, Haia Aldosari
Summary: In this study, magnesium-doped zinc oxide nanoparticles were synthesized and characterized. The research findings show that magnesium doping can alter the crystal structure and optical properties of zinc oxide, while enhancing its dielectric constant.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
F. J. Willars-Rodriguez, I. R. Chaverz-Urbiola, M. A. Hernandez-Landaverde, A. Zavala-Franco, E. A. Chavez-Urbiola, P. Vorobiev, Yu V. Vorobiev
Summary: This study focuses on manganese doped CdS thin films synthesized by chemical bath deposition. The incorporation of Mn2+ cations in CdS was found to influence the crystalline structure, morphology, and optoelectronic properties. Doped thin films exhibited a uniform hexagonal structure, changed growth orientation, and showed scale-like and needle-like morphologies. The bandgap and rectification speed of Schottky diodes were modified by introducing manganese. This study suggests the potential for affordable high-speed optoelectronic devices.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Mehdi Javidi, Hooman Karimi Abadeh, Fatemeh Namazi, Hamid Reza Yazdanpanah, Narjes Shirvani Shiri
Summary: This study investigated the synergistic effect of temperature, solution velocity, and sulphuric acid concentration on the corrosion behavior of carbon steel using response surface methodology. The results showed that temperature affected anodic reactions, solution velocity influenced cathodic reactions, and acid concentration altered the corrosion mechanisms by changing the properties of the surface layer.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
R. Sakthivel, Thirumoorthy Kulandaivel, Kirankumar Venkatesan Savunthari, K. Mohanraj, Hans-Uwe Dahms, Aswin kumar Anbalagan, Manjunath Rangasamy, Kien-Voon Kong
Summary: In this study, saturated fatty acids were incorporated with silane to modify viscose fabric, resulting in superhydrophobic and superoleophilic properties. The modified fabric showed excellent separation efficiency for oil and organic solvents, with high absorption capacity. The modified fabric also exhibited durability and retained its properties in harsh conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Wei Zhang, Hong Lei, Wenqing Liu, Zefang Zhang, Yi Chen, Xiaogang Hu, Xiangshan Ye
Summary: In this study, EDTA-grafted alumina composite abrasives were produced by a two-step process for the CMP of sapphire substrates. Experimental results showed that the modified abrasives exhibited better dispersion properties and significantly improved polishing efficiency, with higher material removal rates and lower surface roughness. The combination of chemical reaction and mechanical action enhanced the CMP performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Shumaila Rafaqat, Bushra Perveen, Warda Raqba, Warda Imran, Arshad Hussain, Naeem Ali
Summary: This study developed a MnP-based biosensor for quantitative measurement of dye concentrations using electrochemical signals. The effects of two different dyes on MnP activity were investigated, with one dye showing inhibitory effects and the other dye having no effect. The study demonstrates the potential application of enzyme-based biosensors in dye detection and toxicological monitoring.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinyan Shi, Oguzhan Yavuz Bayraktar, Baris Bayrak, Burak Bodur, Ali Oz, Gokhan Kaplan, Abdulkadir Cuneyt Aydin
Summary: The elemental composition of precursors is crucial for the performance development of geopolymers. The use of lime instead of metakaolin increases the fluidity and mechanical properties of geopolymers, while the addition of gypsum decreases them. Furthermore, higher lime content exacerbates the negative effect of gypsum.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aayush Gupta, Kaveri Ajravat, Loveleen K. Brar, O. P. Pandey, Pandey Rajagopalan
Summary: This study focuses on the performance of Mn3O4-ZnO composite material in wastewater treatment and energy storage applications, and presents a detailed comparative analysis. Results show that the composite material with equal concentrations of Mn3O4 and ZnO exhibits excellent photocatalytic activity and high capacitance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
V. Murugabalaji, Matruprasad Rout, Harsh Soni, Biranchi Narayan Sahoo
Summary: This study focuses on the corrosion characteristics of AA 7075 and AA 7075 based hybrid composite fabricated using stir casting and hot rolling techniques. The results show that the hybrid composite produced by hot cross rolling exhibits better corrosion resistance compared to the base metal. The addition of a small amount of graphite improves the bonding between the matrix and reinforcements, and the hot cross rolling enhances this bonding, leading to the formation of a strong passivation oxide layer and increased charge transfer resistance, thereby improving corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Fangkun Ning, Qinghao Shi, Shuping Kong, Weitao Jia, Lifeng Ma
Summary: The paper investigates a new method of rolling sheets with variable chamfering amounts in both the transversal and normal directions. The feasibility of the technological process was tested through simulation and compared with experimental results. Three important process parameters, temperature, stress, and flow velocity, were used to evaluate the effects on chamfering amount before determining the optimal angle. The spread formula for evaluating the shape quality of the plate after ECR was obtained through testing and theory.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aqeel Abbas, M. A. Hussein, Mohamed Javid
Summary: In this study, the AM60 magnesium alloy was processed using high-energy ball milling, and the results showed that different reinforcement agents had certain effects on particle size, crystallite size, lattice strain, and dislocation density.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
D. S. Mahmoud, E. M. Eldesouki, W. M. Abd El-Gawad
Summary: The development of flexible and lightweight microwave-absorbing materials has become a trendy topic. This study focuses on enhancing the microwave-absorbing performance of butadiene-acrylonitrile rubber (NBR) by incorporating novel reinforcing nanofillers. The results show that the NBR nanocomposite with a loading of 16 parts per hundred rubber (phr) of LiFe 20%/Si has the best microwave-absorbing performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)