Article
Crystallography
Temesgen Yiber Animut, Henni Setia Ningsih, Wen-Ling Yeh, Shao-Ju Shih
Summary: In this study, Mg2SiO4 powders were successfully synthesized using spray pyrolysis method with the precursors of magnesium nitrate hydrate and tetraethyl orthosilicate. Three typical morphologies of smooth solid sphere, rough hollow sphere, and concaved hollow sphere were observed using scanning electron microscopy and transmission electron microscopy. The results showed that morphology and particle size distribution were strongly influenced by the calcination temperature. Finally, the corresponding powder formation mechanisms were proposed and discussed.
Article
Materials Science, Ceramics
Johannes Peter, Alexander Ott, Ralf Riedel, Emanuel Ionescu, Hans-Joachim Kleebe
Summary: SiFeO(N,C)-based ceramic papers were prepared via a one-pot synthesis approach using a polymeric perhydropolysilazane precursor modified with iron(III)acetylacetonate, followed by pyrolysis at different temperatures. Scanning electron microscopy and transmission electron microscopy analysis showed that the microstructure and phase composition of the ceramic papers varied depending on the pyrolysis temperature, demonstrating the feasibility of producing tailored ceramic materials with fibrous paper-like morphology through template-assisted polymer-derived ceramic route.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Water Resources
M. N. Hossain, Md. Didarul Islam, Ashiqur Rahaman, Nazma Khatun, M. A. Matin
Summary: This study aimed to develop a cost-effective activated carbon (AC) from local tea waste for the treatment of tannery wastewater. The synthesized AC showed high adsorption capability in a methylene blue adsorption test. The crystal structure and microstructure of AC were examined using XRD and SEM, which revealed small crystallite size and particle size. The produced AC effectively reduced chromium and other physical parameters in industrial wastewater.
APPLIED WATER SCIENCE
(2023)
Article
Chemistry, Physical
Yiqiang Lyu, Peng Wang, Dongdong Liu, Fan Zhang, Thomas P. Senftle, Guanghui Zhang, Zhenyu Zhang, Jianmei Wang, Wei Liu
Summary: This study tracks the growth of carbon on a nickel catalyst using in situ microscopy methods. The results indicate that Ni3C is the active phase, contrary to the traditional belief of metallic nickel or surface carbides. Carbon nanofibers are grown layer-by-layer on Ni3C particles through synchronized oscillation. The decomposition of Ni3C into Ni and surface-adsorbed carbon is thermodynamically favorable, and a carbon concentration gradient drives C migration within the particle.
Article
Materials Science, Coatings & Films
Xi Chen, Ahmed A. Tiamiyu, Christopher A. Schuh, James M. LeBeau
Summary: Successful cold spray processing requires the formation of metallurgical bonds between particle impact sites and the substrate. Through microscopic and spectroscopic analysis of impact sites on a copper substrate, we discovered the presence of amorphous carbon and spherical copper oxide dispersoids in addition to native oxides, which were found to influence metallurgical bonding.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Food Science & Technology
Amal S. Albedwawi, Reem Al Sakkaf, Tareq M. Osaili, Ahmed Yusuf, Amin Olaimat, Shao-Quan Liu, Giovanni Palmisano, Nagendra P. Shah, Mutamed M. Ayyash
Summary: This paper investigated the ability of lactic acid bacteria (LAB) and Bifidobacterium to remove acrylamide (AA) and examined the mechanism(s) of the AA removal using various microscopic techniques. The results showed that Bifidobacterium breve and Lactiplantibacillus plantarum exhibited higher acrylamide reduction rates. The study also found that both strains could tolerate low pH levels and remove acrylamide under in vitro gastrointestinal conditions.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Yawei Li, Li Wang, Yufeng He, Wei Zheng, Langhong Lou, Jian Zhang
Summary: The study found that as the temperature increases, the spacing of dislocation networks in the gamma/gamma' interface decreases, while the minimum creep rate increases non-linearly. This is due to the enhanced dislocation-climb in the interface and gamma'-cutting by a <010> superdislocations.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
B. D. S. Deeraj, Gejo George, N. R. Dhineshbabu, Suryasarathi Bose, Kuruvilla Joseph
Summary: This study focused on the preparation and characterization of zirconia incorporated PAN-based carbon nanofiber reinforced epoxy composites as effective EMI shielding materials. The results showed superior storage modulus and excellent EMI shielding effectiveness, especially stacking the ZrO2@CNF mats to achieve outstanding shielding effectiveness above -90 dB in the Ku band, which is significant for industrial, radar, and military applications.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Physical
Subodh Shrivastava, Shubhra Mathur, Nutan Sharma, Ankit Kumar Vishwakarma, Chagan Lal Saini, S. P. Nehra
Summary: In this study, conducting MWNT/PANI nanocomposite was successfully synthesized using in-situ oxidative polymerization at low temperatures. The physicochemical properties of the nanocomposite were characterized, and the effect of MWNT loading on the gas sensing properties for hydrogen gas was analyzed. The results showed that the addition of MWNT improved the crystallite, conductivity, stability, and morphology of the composite material. The MWNT/PANI thin film sensor demonstrated high sensitivity and fast response for hydrogen gas detection at low temperatures.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Microbiology
Monika Kakol, Ezher Tagliasacchi, Andrzej Borkowski, Miroslaw Slowakiewicz
Summary: The nutritional condition of seed mussels used in New Zealand's Greenshell mussel aquaculture industry shows high variability, which may contribute to the marked variation observed in spat performance. Environmental factors that limit feeding during harvest and transport of spat are likely influencing the quality of spat used by the industry. Measures to improve the quality of wild spat supply, such as testing nutritional condition and developing nursery culture methods and artificial spat feeds, are needed.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Tuan Zaharinie, Zainul Huda, Suriani Ibrahim, Farazila Yusof, Mohd Hamdi, Mohammad Rehan, Tadashi Ariga
Summary: This research paper introduces a reliable and economical method for direct brazing using an active Ag-Cu-Ti filler metal that ensures effective brazing. The study focuses on the sapphire-sapphire brazing process and the formation of uniform reaction layers at the interface. The uniformity of the reaction layers decreases with increasing brazing temperature and time.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Agriculture, Dairy & Animal Science
Qianqian Xu, Sasa Miao, Huafeng Jian, Xiaoting Zou, Xinyang Dong
Summary: This study aimed to evaluate the development of the morphology and immune function in the jejunum and ileum of squab pigeons. The results showed that the enterocyte circumference and villus morphology changed with age, and there were alterations in the levels of secretory IgA and cytokines. Overall, the changes in the intestine persisted throughout the entire period and differed between the jejunum and ileum.
Article
Nanoscience & Nanotechnology
Lu Zhang, Huanfang Tian, Sining Dong, Dong Yang, Xiaoguang Li, Jun Li, Jianqi Li, Huaixin Yang
Summary: The structural modulations in multiferroic Bi4.2K0.8Fe2O9+delta (BKFO) nanobelts have been uncovered by scanning transmission electron microscopy (STEM). The displacive modulations can be decomposed into a transverse wave and a longitudinal wave, whose amplitudes and phases are layer-dependent. This study may help to understand and optimize the magnetoelectric coupling effect in BKFO.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
Ivan S. Pavlov, Anna G. Ivanova, Vladimir P. Filonenko, Igor P. Zibrov, Alexei E. Voloshin, Pavel V. Zinin, Alexander L. Vasiliev
Summary: This study investigates the formation of boron carbide superhard particles through a liquid-phase reaction at high pressure and high temperature. The synthesized particles exhibit a rhombic hexecontahedron morphology with twelve five-vertex stars. Electron microscopy and X-ray diffraction were used to analyze the crystal structure of these particles, revealing multiple cycling twinning rather than quasi-crystalline symptoms. The specific shape of the particles is explained by the decrease of surface energy during formation at high pressure and high temperature.
SCRIPTA MATERIALIA
(2023)
Review
Materials Science, Multidisciplinary
Xi Jiang, Nitash P. Balsara
Summary: Electron microscopy has been essential in characterizing polymers, with recent developments allowing for atomic resolution imaging of polymer crystals and providing a comprehensive understanding of strategies towards high-resolution imaging of radiation-sensitive polymer materials at different length scales.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Environmental Sciences
Nur Jannah Idris, Suriani Abu Bakar, Azmi Mohamed, Muqoyyanah Muqoyyanah, Mohd Hafiz Dzarfan Othman, Mohamad Hafiz Mamat, Mohd Khairul Ahmad, Muhammad Danang Birowosuto, Tetsuo Soga
Summary: By hybridizing with graphene oxide and multi-walled carbon nanotubes solution, the efficiency of photocatalytic degradation of dyes was improved. Experimental results showed that the composite photocatalyst containing zinc oxide nanorods and titanium dioxide nanorods achieved the highest methylene blue degradation rate under the influence of GO_MWCNTs.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Materials Science, Ceramics
Amr Attia Abuelwafa, M. S. Abd El-sadek, Sahar Elnobi, Tetsuo Soga
Summary: SnO thin films were deposited on ITO, FTO, and glass substrates using thermal evaporation technique, revealing amorphous structure and direct transitions in Tauc's relation. The study found that SnO/ITO exhibited higher nonlinear parameters compared to SnO/FTO, suggesting potential in nonlinear optics applications.
CERAMICS INTERNATIONAL
(2021)
Article
Environmental Sciences
R. Mohamat, A. B. Suriani, A. Mohamed, Muqoyyanah, M. H. D. Othman, R. Rohani, M. H. Mamat, M. K. Ahmad, M. N. Azlan, M. A. Mohamed, M. D. Birowosuto, T. Soga
Summary: Customized surfactants were used to assist in the direct synthesis of graphene oxide, leading to the fabrication of polyvinylidene fluoride nanofiltration membranes with enhanced antifouling properties and water permeability. Higher surfactants' tail number resulted in improved performance of the fabricated membranes.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
R. M. D. Matiur, A. A. Abuelwafa, S. Kato, N. Kishi, T. Soga
Summary: This study investigates the optical properties of SILAR-prepared BiOI and its derivatives films, revealing that nonlinear optical behavior decreases after phase transformation, opening up new possibilities for the application of BiOI-based materials in nonlinear optical devices.
Article
Materials Science, Ceramics
M. F. Malek, M. Robaiah, A. B. Suriani, M. H. Mamat, M. K. Ahmad, T. Soga, M. Rusop, S. Abdullah, Z. Khusaimi, M. Aslam, N. A. Asli
Summary: The waste cooking palm oil was utilized as a green carbon source for synthesizing graphene through double thermal chemical vapor deposition. The graphene synthesized at 1000 degrees C showed the highest quality with good crystallinity and hexagonal graphite structure. The presence of the graphene layer on Ni was confirmed by the highest reflectance in the visible light region shown in the UV-Vis result.
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Muqoyyanah, A. B. Suriani, A. Mohamed, N. Hashim, M. H. Mamat, M. K. Ahmad, M. H. D. Othman, M. A. Mohamed, M. D. Nurhafizah, M. D. Birowosuto, T. Soga
Summary: The study investigated different titanium dioxide nanostructures and phases for photoanode film in dye-sensitized solar cells. Rutile TiO2 nanorods-microcauliflowers film showed higher energy conversion efficiency and short-circuit current density due to increased dye adsorption and enhanced electron excitation.
BULLETIN OF MATERIALS SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
R. Matiur, A. A. Abuelwafa, M. A. A. Noman, S. Kato, N. Kishi, T. Soga
Summary: The investigation characterized BiOI electrochemical cells prepared by successive ionic layer adsorption and reaction (SILAR) through electrochemical impedance spectroscopy (EIS). The study found that at 30 SILAR cycles, the BiOI film exhibited the best structural uniformity and effective surface area, resulting in the lowest film resistance and charge transfer resistance, leading to maximum photovoltaic performance with a short-circuit current density of 0.6 mA/cm(2) and open-circuit voltage of 0.43 V.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Amr Attia Abuelwafa, Rucheng Zhu, Riteshkumar Vishwakarma, Sahar Elnobi, Sudip Adhikari, Tetsuo Soga, Masayoshi Umeno
Summary: In this study, laser irradiation was used to control the doping process of directly grown graphene, leading to the collection of gold particles on graphene network wrinkles which significantly enhance the electrical properties of graphene. This approach shows promise in designing transparent conductive electrodes for optoelectronic devices.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Optics
Amr Attia Abuelwafa, H. M. Alsoghier, Sahar Elnobi, M. Dongol, T. Soga
Summary: The research calculated the structural distortions of NiTPP molecules and fabricated NiTPP/FTO thin films using different methods. The increase in film thickness led to larger crystallite size and more uniform film morphology. Analysis of Raman spectra and optical properties indicated that these films exhibit strong nonlinear optical characteristics.
Article
Chemistry, Physical
R. M. D. Matiur, M. A. A. Noman, S. Kato, T. Soga
Summary: This study introduces a novel and simple synthesis method for BiOI film preparation, confirming the existence of stable BiOI film at 300-350 degrees C. It also discusses the transformation and stability of BiOI and BiI3 films under different temperature conditions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
M. F. Achoi, M. A. A. Noman, S. Kato, N. Kishi, T. Soga
Summary: This study proposed a method to prepare pinhole-free MBI film by multi-step spin coating, and found that the maximum solar cell performance was achieved at 8 layers of MBI. Subsequent increase in MBI layers led to a decrease in performance.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
M. F. Achoi, S. Aiba, S. Kato, N. Kishi, T. Soga
Summary: This paper reports on the influence of post-annealing on the properties of MBI perovskite solar cells fabricated through the HIM method. The results show that increasing the post-annealing temperature improves the crystallinity, surface morphology, and optical properties of the MBI film. As a result, the performance of the MBI solar cells is significantly enhanced, with a fivefold increase in power conversion efficiency.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Multidisciplinary Sciences
Suresh Sagadevan, Ramesh Poonchi Sivasankaran, J. Anita Lett, Is Fatimah, Getu Kassegn Weldegebrieal, Estelle Leonard, Minh-Vien Le, Tetsuo Soga
Summary: The synthesis and characterization of hematite (& alpha;-Fe2O3) nanoparticles (NPs) were conducted, and their photocatalytic properties were studied. The α-Fe2O3 NPs were found to have a rhombohedral phase confirmed by XRD, and FT-IR was used to analyze functional groups on the catalyst surface. The bandgap energy was determined to be 2.25 eV using UV-Vis DRS, and SEM images showed a spherical morphology. The α-Fe2O3 NPs exhibited oxidation and reduction properties as analyzed by CV. Under natural sunlight, the degradation efficiency of methylene blue (MB) dye using the α-Fe2O3 NPs reached 33% in 2 hours, with a pseudo-first-order rate constant of 0.0033 min(-1).
Article
Nanoscience & Nanotechnology
M. S. H. Choudhury, Sheik Erfan Ahmed Himu, Mahatab Uddin Khan, Md Zahid Hasan, Md Shafiul Alam, Tetsuo Soga
Summary: This study investigates the effect of compression temperature on the performance of Zinc Oxide (ZnO)-based dye-sensitized solar cells (DSSC). The results show that cells prepared at a compression temperature of 70 degrees Celsius under 60 MP pressure exhibit the most favorable photovoltaic performance. Scanning Electron Microscopy images confirm that a compression temperature higher than 70 degrees Celsius leads to defects on the photoelectrode surface.
Article
Multidisciplinary Sciences
R. M. D. Matiur, A. A. Abuelwafa, Anissa A. Putri, S. Kato, N. Kishi, T. Soga
Summary: This study investigates the effects of phase transformations on the structure, optical, and electrical properties of BiOI thin film under different annealing temperatures. The results show that with increasing annealing temperature, the crystallite size decreases, the indirect bandgap increases, and significant changes in electrical properties are observed. This research provides new insights into the properties of dip-SILAR-prepared BiOI photovoltaic cells and their potential for applications in the field.
SN APPLIED SCIENCES
(2021)
