Article
Chemistry, Physical
Y. Mansilla, M. D. Arce, C. Gonzalez-Oliver, J. Basbus, H. Troiani, A. Serquis
Summary: ZrO2 thin films were synthesized using the sol-gel method and characterized using various techniques, showing excellent insulating properties and high symmetry phases, making them ideal for electrical insulator and anti-corrosion coatings.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Han Hu, Lin Mao, Shuo Yin, Hanlin Liao, Chao Zhang
Summary: This article reviews the progress of liquid thermal sprayed coating in wear resistance as well as friction reduction in recent years. The influences of microstructure, composition, phase structure and mechanical properties on the tribological properties of typical coatings are investigated. The article also highlights the importance of process optimization and heat treatment in improving the tribological properties of the coating.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
G. Kartopu, Q. Fan, O. Oklobia, S. J. C. Irvine
Summary: Polycrystalline Cd1-xZnxTe thin films prepared by a combinatorial MOCVD process were characterized for their structural, optical, and electrical properties. The films showed smoother surfaces with smaller grains and increased sub bandgap transmittance with higher Zn concentration. X-ray diffraction indicated (111) texture and increasing compositional inhomogeneity for ternary compositions.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Zhi-Gang Wang, Wei-Dong Chen, Shu-Fang Yan, Xiu-Juan Fan, Zhi-Gao Xu
Summary: ZrO2 ceramic coatings were prepared on the surface of ZrH1.8 using micro-arc oxidation technique. The coatings were characterized for their microstructure, chemical composition and anti-permeation effect. It was found that the coatings prepared in phosphate electrolyte were more compact and exhibited better resistance to hydrogen permeation.
Article
Metallurgy & Metallurgical Engineering
Benjamin Millan-Ramos, Daniela Morquecho-Marin, Phaedra Silva-Bermudez, David Ramirez-Ortega, Osmary Depablos-Rivera, Julieta Garcia-Lopez, Mariana Fernandez-Lizarraga, Jose Victoria-Hernandez, Dietmar Letzig, Argelia Almaguer-Flores, Sandra E. Rodil
Summary: In this study, ZrO2 thin films were deposited by magnetron sputtering on a Mg-Zn-Ca alloy to reduce its degradation rate and improve biocompatibility, cell adhesion, and proliferation. The 380 nm ZrO2 coating showed promising results in reducing degradation and H-2 evolution of the alloy in the initial 3 days after immersion, while allowing long-term degradation of the bare alloy. The ZrO2 coating also prevented the adhesion and biofilm formation of S. aureus.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Ceramics
Ahmad Hamieh, Freddy Ponchel, Denis Remiens
Summary: This study investigated the growth of (Bi0.5Na0.5)TiO3 thin films using ex situ sputtering, with a novel approach to precisely control the film composition. By heating the substrate during growth and post-annealing treatment, the films showed controlled bismuth content and composition, exhibiting high crystallinity and dense microstructure. The electrical properties of the films were greatly influenced by the Bi content, with the best performance seen in stoichiometric films deposited at 200 degrees C.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Tao Zhang, Yifan Li, Qian Cheng, Zhiguo Hu, Jinbang Ma, Yixin Yao, Yan Zuo, Qian Feng, Yachao Zhang, Hong Zhou, Jing Ning, Chunfu Zhang, Jincheng Zhang, Yue Hao
Summary: In this study, β-Ga2O3 films were successfully deposited on sapphire substrates using pulsed MOCVD, and the effects of different O-2 pulse times on the growth and properties were investigated. The results showed that the film deposited with a 0.2-minute O-2 pulse had the best crystalline quality and stable photoelectric performance.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Juyoung Jeong, Yoogeun Han, Hyunchul Sohn
Summary: The electrical properties of La-doped ZrO2 thin films were investigated for their application as cell capacitors in dynamic random-access memory. The results showed that La-doped ZrO2 thin films exhibited a high dielectric constant and low leakage current, making them an excellent candidate material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Tao Zhang, Yifan Li, Qian Feng, Yachao Zhang, Jing Ning, Chunfu Zhang, Jincheng Zhang, Yue Hao
Summary: Beta-Ga2O3 films were grown on (0001) sapphire substrates by low-pressure MOCVD, and the effects of growth pressure on growth rate, surface morphology, and optical properties were investigated. Increasing growth pressure led to a decrease in growth rate, reduction in grain size, and smoother surface morphology, while maintaining high optical transmittance.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Veniero Lenzi, Jose P. B. Silva, Bretislav Smid, Vladimir Matolin, Cosmin M. Istrate, Corneliu Ghica, Judith L. MacManus-Driscoll, Luis Marques
Summary: In this study, it is found that oxygen vacancies in rhombohedral ZrO2 thin films not only stabilize the phase, but also contribute to the ferroelectric polarization. Experimental investigation, coupled with density functional theory calculations, reveals the importance of oxygen vacancies for stabilizing rhombohedral ZrO2 thin films with superior ferroelectric properties.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Kristina Ashurbekova, Evgeny Modin, Harun Hano, Karina Ashurbekova, Iva Saric Jankovic, Robert Peter, Mladen Petravic, Andrey Chuvilin, Aziz Abdulagatov, Mato Knez
Summary: This study investigates the phenomenon of surface graphenization in silicon-based preceramic polymer films using molecular layer deposition. In situ thermal annealing transmission electron microscopy reveals the evolution of carbon on the nanoscale during high-temperature postprocessing, showing the formation of up to four graphene layers. The amount of carbon and resulting number of surficial graphene layers can be controlled by adjusting the temperature during the deposition process. MicroRaman mapping confirms the chemical nature of e-beam-induced graphene formation.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Tianzhen Guo, Dan Wang, Yajun Yang, Xiaoyong Xiong, Kelin Li, Guanggen Zeng, Bing Li, Mohsen Ghali
Summary: CuSbSe2 has shown promising photovoltaic properties for thin film solar cells due to its environmentally friendly constituent elements. High-quality CuSbSe2 thin films were prepared by pulsed laser deposition and in-situ annealing. The results indicated a reduction in Sb2Se3 and Cu3SbSe3 content in the films after annealing, with an estimated atomic ratio of Cu:Sb:Se close to the stoichiometry ratio of CuSbSe2. The optical band gap of the annealed film met the requirements for solar cell absorber layers.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Physical
Zeyuan Fei, Zimin Chen, Weiqu Chen, Shujian Chen, Zhisheng Wu, Xing Lu, Gang Wang, Jun Liang, Yanli Pei
Summary: In this work, hetero-epitaxy of epsilon-Ga2O3 thin films were successfully grown on c-plane sapphire using metal-organic chemical vapor deposition (MOCVD). The impacts of different oxygen precursors on crystal structure, optical absorption, cathodoluminescence, and photoelectric properties were studied. Deep-ultraviolet (DUV) photodetectors based on the epsilon-Ga2O3 thin films were fabricated, and the device performance was compared. The results showed that epsilon-Ga2O3 grown using H2O as the precursor exhibited faster response speed and higher responsivity, indicating its potential for DUV photodetectors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
S. Ahmadi, N. Khemiri, A. Cantarero, M. Kanzari
Summary: The study demonstrates that CZTS films can be grown by one-step thermal evaporation, which are earth abundant and non-toxic. The sulfurization process improves the crystallinity and morphology of the films and brings the chemical composition close to the theoretical stoichiometry. XPS analysis reveals the specific oxidation states of the elements in the sulfurized CZTS films.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Materials Science, Multidisciplinary
Marcin Winnicki
Summary: This paper discusses the application of low-pressure cold spray in forming metal matrix composites with high ceramic contents and all-ceramic coatings. It analyzes the impact of LPCS process parameters on deposition efficiency and presents useful feedstock powder preparation techniques. By optimizing spraying parameters, it is possible to predict and control phase transformation in the feedstock material.
Article
Polymer Science
Karina Santiago-Castillo, Aide Minerva Torres-Huerta, Deyanira del Angel-Lopez, Miguel Antonio Dominguez-Crespo, Hector Dorantes-Rosales, Diana Palma-Ramirez, Helen Willcock
Summary: This study reports a two-step process for the preparation of PVA-CTS-Ag electrospun fibers and analyzes their microstructural, mechanical, and antibacterial properties, confirming their potential application in the biomedical field.
Article
Materials Science, Ceramics
Jessica Ramirez-Hernandez, Aide M. Torres-Huerta, Silvia B. Brachetti-Sibaja, Miguel A. Dominguez-Crespo, Diana Palma-Ramirez, Adela E. Rodriguez-Salazar, Araceli Ezeta-Mejia
Summary: In this work, La0.7_xLnxCa0.3MnO3 (Ln = Pr or Sm)-La1_xLnxCa0.3MnO3 perovskite materials were synthesized using the Pechini method, and the effect of the type of cation and composition on the properties was evaluated. The substitution of La by Pr or Sm did not alter the crystal structure of the material, but caused cell distortion. The distortion of the crystal structure promoted hole-doped system through Jahn-Teller mechanism. The adsorption-desorption isotherms showed that Pr compositions exhibited mesoporous features, while the Sm compositions showed a transition from micro- to meso-porous characteristics.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Roberto Cardenas-Zapata, Diana Palma-Ramirez, Abelardo Flores-Vela, Miguel A. Dominguez-Crespo, Aide M. Torres-Huerta, Hector Dorantes-Rosales, Silvia B. Brachetti-Sibaja
Summary: This study focuses on the valorization of sawdust biomass to extract cellulose and recover hemicellulose and lignin. The proposed green method shows potential in producing a biomass rich in alpha-cellulose, which can have significant impact on the development of biodegradable thermoplastics. The type of biomass and pretreatment play a crucial role in determining the composition and properties of the extracted materials.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
J. J. de la Cruz-Cruz, M. A. Dominguez-Crespo, E. Ramirez-Meneses, A. M. Torres-Huerta, S. B. Brachetti-Sibaja, A. E. Rodriguez-Salazar, E. Pastor, L. E. Gonzalez-Sanchez
Summary: Pd and Pd-based catalysts are considered the best alternative to Pt for hydrogen production due to their similar electronic structures and more abundant reserves. The in-situ synthesis of PdNi/C electrode materials with different Ni content showed that low Ni amounts can enhance hydrogen adsorption on the bimetallic active surface, leading to improved electrochemical surface area and real area. The synergistic effect between Pd and Ni components in PdNi alloys improves the overpotential of the hydrogen evolution reaction, with Ni content influencing hydrogen adsorption resistance and charge transfer resistance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Multidisciplinary Sciences
J. J. de la Cruz-Cruz, M. A. Dominguez-Crespo, E. Ramirez-Meneses, A. M. Torres-Huerta, S. B. Brachetti-Sibaja, A. E. Rodriguez-Salazar, E. Pastor, L. E. Gonzalez-Sanchez
Summary: This study evaluates the effect of Ni amount on the hydrogen evolution reaction during the in situ synthesis of vulcan supported PdNi nanostructures using an organometallic approach in alkaline medium. The results show that adjusting the organometallic method can improve the electrochemical performance of the hydrogen evolution reaction.
Article
Environmental Sciences
A. Licona-Aguilar, A. M. Torres-Huerta, M. A. Dominguez-Crespo, D. Palma-Ramirez, E. Conde-Barajas, M. X. L. Negrete-Rodriguez, A. E. Rodriguez-Salazar, D. S. Garcia-Zaleta
Summary: This study synthesized activated carbons from sugarcane bagasse and orange peel and used carbon foams for the adsorption of heavy metals in synthetic water. The results showed that carbon foam from orange peel exhibited a higher removal rate for lead and copper at pH 5.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
A. I. Licona-Aguilar, A. M. Torres-Huerta, M. A. Dominguez-Crespo, D. Palma-Ramirez, E. Conde-Barajas, M. X. L. Negrete-Rodriguez, A. E. Rodriguez-Salazar, D. S. Garcia-Zaleta
Summary: This document provides additional information on the production of activated carbons and carbon foams from agroindustrial wastes, specifically orange peel and sugarcane bagasse. The data presented includes characterization of carbonaceous structures, such as surface area analysis and pore size distribution, as well as the evaluation of their electrokinetic potential. The document also demonstrates the adsorption capacity of these materials for the removal of metallic ions in polluted waters. The findings contribute to the promotion of the reuse of agroindustrial wastes and the synthesis of carbonaceous structures for water purification.
Article
Chemistry, Applied
K. Anaya-Garza, A. M. Torres-Huerta, M. A. Dominguez-Crespo, J. Moreno-Palmerin, E. Ramirez-Meneses, A. E. Rodriguez-Salazar
Summary: The dip-coating method was used to create a UHMWPE/ODPA bilayer coating on Ti6Al4V alloys, effectively improving their corrosion resistance and delaying the failure of medical implants.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Physical
G. Zacahua-Tlacuatl, E. Ramirez-Meneses, A. Manzo-Robledo, A. M. Torres-Huerta, I. Betancourt, K. Philippot, M. Ibrahim, M. A. Dominguez-Crespo
Summary: In this study, polyvinylpyrrolidone (PVP)-stabilized palladium-rhodium nanostructures were synthesized for use as carbon-supported electrodes (PdxRh1-x-PVP/C) in the methanol oxidation reaction (MOR). The nanostructures were prepared through the hydrogenation of tris(dibenzylideneacetone)dipalladium(0) (Pd2(dba)3) and tris(allyl) rhodium (Rh(h3-C3H5)3) complexes in tetrahydrofuran (THF) with PVP as a stabilizer. The resulting nanostructures exhibited enhanced methanol electro-oxidation in alkaline medium due to the synergistic effect between Pd and Rh metals. Among the evaluated electrode materials, the Pd8Rh2-PVP/C electrode showed the highest catalytic activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Polymer Science
L. P. A. Guerrero-Ortega, E. Ramirez-Meneses, I Betancourt, L. Lartundo-Rojas, R. Mendoza-Cruz, A. M. Torres-Huerta, M. A. Dominguez-Crespo
Summary: In this study, different long-chain primary alkylamines were used to stabilize Ni-NiO nanoparticles, and it was found that the chain length affected the microstructural and magnetic properties. The surface composition and particle size were also influenced by the primary alkylamines.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Environmental Sciences
Luisiana Morales-Zamudio, Alejandro Fierro-Cabo, Md Saydur Rahman, Miguel Antonio Dominguez-Crespo
Summary: House geckos cohabitate with humans in tropical and subtropical regions. These geckos are exposed to suspended particulate matter and dust, and as exotic species, they have unique behaviors and biological traits. The study found that the metal contents in these geckos are related to the air pollution sources in their environment, suggesting that they can be used as biomonitoring indicators for metal pollutants.
JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH-PART A-CURRENT ISSUES
(2023)
Article
Biotechnology & Applied Microbiology
M. E. Juarez-Mendez, D. Palma-Ramirez, S. B. Brachetti-Sibaja, A. M. Torres-Huerta, M. A. Dominguez-Crespo, D. S. Garcia Zaleta, H. J. Dorantes-Rosales, F. Gutierrez-Galicia
Summary: This study investigates the transformation of SUP cups into crystalline nanocellulose (CNC) and the effects of acid hydrolysis concentration on its properties. The optimized CNC obtained at 64% v/v concentration exhibits ribbon-like morphologies rich in cellulose types I alpha and II with high crystallinity and nanosize scale. PMMA-g-CNC samples show high thermal stability and nanometric scale, making them potential reinforcement agents for incompatible polymers.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Food Science & Technology
A. I. Licona-Aguilar, J. A. Lois-Correa, A. M. Torres-Huerta, M. A. Dominguez-Crespo, V. Urdapilleta-Inchaurregui, A. E. Rodriguez-Salazar, S. B. Brachetti-Sibaja
Summary: In this study, dietary fibers (DF) were synthesized from SCB wastes and incorporated into wheat flour in different amounts to make composite cookies. The study evaluated the potential use of these cookies in bakery products and compared them with control biscuits made with only wheat flour. The results showed that the DF from SCB residues had a high content of insoluble dietary fiber, making them suitable for human consumption. The composite cookies had different effects on color parameters depending on the amount of DF used. The sensory evaluation indicated that the acceptance of the cookies increased with the addition of bagasse, with the highest acceptance at 15 g kg(-1). The use of SCB wastes as a source of DF is a feasible alternative for the formulation of bakery products.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)