Article
Chemistry, Multidisciplinary
Wei Qian, Huaqiang Fu, Yi Sun, Zhe Wang, Han Wu, Zongkui Kou, Bao-Wen Li, Daping He, Ce-Wen Nan
Summary: Through an electrostatic-repulsion aligning strategy, highly conductive, ultraflexible, and multifunctional graphene films with fine microstructure, enhanced mechanical properties, and improved electrical conductivity have been produced.
ADVANCED MATERIALS
(2022)
Article
Energy & Fuels
Mohan Lal, K. M. Gangotri
Summary: The main objective of this research was to enhance the conversion efficiency of solar energy into electricity and store it through photogalvanic cells. By studying a special designed photogalvanic system, it was found that a mixed surfactant system has higher storage capacity compared to a single surfactant system. The research also proposed a photochemical mechanism to explain current generation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Mahfooz-ur-Rehman, Muhammad Waseem, Wajid Rehman, Rafaqat Hussain, Shahzad Hussain, Sirajul Haq, Muhammad Anis-ur-Rehman
Summary: In this study, Fe3O4, TiO2 and SnO2 nanoparticles were synthesized and characterized, with a focus on their electrical properties. The research found that Fe3O4 has higher reactivity, with a decrease in resistivity and an increase in drift mobility observed with increasing temperature. Additionally, ternary nanocomposites showed a higher activation energy compared to unary NPs and binary nanocomposites.
Article
Materials Science, Ceramics
Jiawen Wu, Wentao Xu, Tianwen Dong, Ming Jin, Youfu Zhou
Summary: Incorporating graphene into ceramic matrices can create a fine microstructure with unique interfaces, allowing for the combination of excellent mechanical and electrical properties in bulk quantities. This study proposes a self-assembly strategy for the fabrication of graphene oxide-ZrO2 hybrids, achieving homogeneous and nondestructive results. The resulting composites exhibit improved flexural strength, fracture toughness, and reduced anisotropy.
CERAMICS INTERNATIONAL
(2022)
Article
Polymer Science
Bo Wang, Xueqin Zhang, Guangquan Zhang, Yijie Liu, Yujun Guo, Song Xiao, Wenfu Wei, Guangning Wu
Summary: Due to their versatility, superhydrophobic materials have garnered significant attention in power electronics, transportation, engineering, and other fields. The volume fraction of fluorinated silicon oxide nanoparticles is a crucial factor in these materials. Increasing the volume fraction decreases the stability between the coating and the hydrophobic surface, resulting in a gradual decrease in flashover voltage and a significant increase in voltage dispersion after 30 vol.%. This study proposes a self-assembly strategy based on surface energy differences, utilizing boron nitride nanosheets and silicon oxide nanoparticles as a binary filling phase in the coating. Experimental results demonstrate the optimization of the superhydrophobic coating's flashover voltage using this binary filling phase coating, providing new ideas for filling phase selection and application of superhydrophobic materials.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Nathan Hostettler, Pascal Hubert
Summary: The addition of graphene particles significantly improves the electrical properties of thermoset resin, making it suitable for damage and strain tracking. However, the increase in electrical properties depends on the amount and purity of graphene particles, which are usually expensive. To reduce the quantity needed for conduction, a self-assembly network of graphene particles was created using unsaturated polyester and polycaprolactone blends, resulting in a significant enhancement of DC and AC electrical conductivities. The optimized composition required only 1.4 wt% of graphene compared to the initial 8.2 wt%. These materials also showed excellent strain sensing capabilities at low applied voltage, making them reliable and cost-effective for self-sensing and damage tracking applications.
Article
Electrochemistry
Shanshan Qin, Zdenek Badura, Nikita Denisov, Ondrej Tomanec, Shiva Mohajernia, Ning Liu, Stepan Kment, Giorgio Zoppellaro, Patrik Schmuki
Summary: This study investigates a self-assembling photocatalytic system formed when grey titania nanoparticles are illuminated in an aqueous Ni2+ solution, resulting in the production of H-2 under UV light. The research shows that the activation is not a result of deposition of Ni-0 or other Ni-catalyst compounds on the titania surface, but rather due to the light-induced formation of a suitable defect structure on the titania combined with an intermediate Ni(I) electron transfer relay. The resulting Ni+/TiO2/Ti3+ photocatalyst operates without the need for noble metals or sacrificial agents.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Changjoon Keum, Jiyoung Hong, Doyeon Kim, Sang-Yup Lee, Hyuncheol Kim
Summary: Research presents lysosome-targeted self-assembly of PDI derivatives as an effective and selective anticancer therapy, causing cancer cell apoptosis through lysosomal rupture; compared to chemotherapeutic agents, PDI-AAs display higher anticancer efficacy on MDR cancer cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Qian Wang, Meng Xiao, Dianyu Wang, Xiaoxue Hou, Jie Gao, Jinjian Liu, Jianfeng Liu
Summary: This study introduces a synergistic Pt(IV) prodrug that combines dual responsive behavior and dual drug resistance-related pathways deactivation, effectively overcoming drug resistance and improving the efficacy of anticancer drugs through multiple mechanisms.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Environmental Sciences
Zoi Christina Kampouraki, Maria Petala, Konstantinos Zacharias, Avraam Konstantinidis, Xenophon Zabulis, Polykarpos Karamaounas, Margaritis Kostoglou, Thodoris D. Karapantsios
Summary: This study develops a sensitive electrical resistance spectroscopy technique to monitor the growth of biofilms over metallic surfaces inside water flow systems. The results show that the electrical resistance signals are more sensitive to metallic surface coverage than biofilm thickness.
ENVIRONMENTAL RESEARCH
(2024)
Article
Chemistry, Multidisciplinary
Jia Li, Leli Zeng, Zheng Wang, Hengxing Chen, Shuo Fang, Jinquan Wang, Chao-Yun Cai, Enming Xing, Xinxing Liao, Zhi-Wei Li, Charles R. Ashby, Zhe-Sheng Chen, Hui Chao, Yihang Pan
Summary: RuZ, a cycloruthenated complex, self-assembles into nanoaggregates in cell culture medium, leading to high intracellular concentrations in multi-drug resistant (MDR) cancer cells. It decreases oxygen consumption, inhibits glycolysis, lowers ATP levels, increases retention in MDR cells, induces oxidative stress and apoptosis. Proteomic analysis shows RuZ decreases glycolysis and mitochondrial respiration proteins while increasing apoptosis-related proteins. It inhibits proliferation of 35 cancer cell lines, including drug-resistant ones, and is effective in doxorubicin-resistant mouse tumor xenografts.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Weiwei Kong, Xinqiao Tang, Xiaolong Chang, Yu Zhuang, Xin Li, Yinggang Jia, Fanbao Meng
Summary: A series of phthalocyanine-based liquid-crystalline poly(styrene sulfonic acid) compounds were synthesized and investigated for their chemical structure, thermal property, liquid-crystalline behavior, and electrical conductivity properties. The compounds exhibited temperature-dependent conductivity with different charge transport mechanisms leading to low and high conductivity behaviors. Additionally, a temperature-controlled molecular electronic switch was fabricated based on the temperature-dependent conductivity property for potential applications.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Chemistry, Analytical
Subhawat Jayasvasti, Panu Thainiramit, Phonexai Yingyong, Don Isarakorn
Summary: This paper proposed an improved measurement technique for determining electrical power across high impedance TEH, which was found to be more accurate than conventional methods through experimentation. Researchers are advised to use this proposed technique for better accuracy in power measurement for any TEH.
Article
Materials Science, Multidisciplinary
Tingting Wang, Longhua Li, Zhaolu Yin, Shaoyong Chen, Junli Wang
Summary: In this study, narrow bandgap selenium (Se)-sensitized TiO2 thin films were prepared by spin-coating of Se inks onto a TiO2 mesoporous layer, which forms a p-Se/n-TiO2 heterojunction interface and shows potential for self-driven visible-light detection and sensing.
Article
Engineering, Electrical & Electronic
Yongguang Tan, Shihong Yue, Ziqiang Cui, Huaxiang Wang
Summary: In this paper, a novel CC method based on ERT images is proposed for flow velocity estimation, which overcomes limitations of existing methods by calculating similarity norm and adaptively determining series length. Experiments validate the effectiveness of the proposed method in dredging engineering applications.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Daniel G. Araiza, Francisco Gonzalez-Vigi, Antonio Gomez-Cortes, Jesus Arenas-Alatorre, Gabriela Diaz
Summary: Platinum catalysts supported over CeO2 and gamma-Al2O3 using different Pt precursors showed different catalytic performance in dry reforming of methane (DRM) reaction. Pt supported over ceria catalysts exhibited better stability and catalytic properties, while alumina-supported catalysts had lower stability due to carbon residues and Pt particle sintering. Through various characterization techniques, a strong Pt-Ceria interaction was observed, contributing to the prevention of Pt particle agglomeration and promoting active sites for enhanced catalytic performance.
JOURNAL OF THE MEXICAN CHEMICAL SOCIETY
(2021)
Article
Polymer Science
David Alejandro Gonzalez Martinez, Enrique Vigueras Santiago, Susana Hernandez Lopez
Summary: By optimizing the carbonation of epoxidized linseed oil containing CC5 groups, high conversion, carbonation, and selectivity values can be achieved. Higher temperature and pressure lead to increased conversion but decreased selectivity, while increasing catalyst concentration favors selectivity. The presence of a secondary mechanism involving the formation of a carboxylate ion was demonstrated through spectroscopic analysis.
Article
Chemistry, Applied
R. Rangel, E. Gonzalez, A. Solis-Garcia, T. A. Zepeda, D. H. Galvan, A. Gomez-Cortes, G. Diaz
Summary: The study found that Pt and Ir nanoparticles on Ce0.97Ru0.03O(2) significantly enhanced the activity of CO oxidation reaction, and proposed a CO oxidation pathway through FTIR spectroscopy.
Article
Physics, Applied
F. J. Chao-Mujica, L. Garcia-Hernandez, S. Camacho-Lopez, M. Camacho-Lopez, M. A. Camacho-Lopez, D. Reyes Contreras, A. Perez-Rodriguez, J. P. Pena-Caravaca, A. Paez-Rodriguez, J. G. Darias-Gonzalez, L. Hernandez-Tabares, O. Arias de Fuentes, E. Prokhorov, N. Torres-Figueredo, E. Reguera, L. F. Desdin-Garcia
Summary: This study reported the synthesis of fluorescent CQDs using the submerged arc discharge method, with a size distribution of 1-5nm. The internal structure and spectra of the produced CQDs were analyzed, showing dual-band fluorescence emission characteristics. The CQDs were evaluated as fluorescence markers for in vitro studies, demonstrating their potential biocompatibility and application in cell culture visualization.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Applied
Luis Lopez-Rodriquez, Daniel G. Araiza, Diana G. Arcos, Antonio Gomez-Cortes, Gabriela Diaz
Summary: This study investigates the catalytic systems of Pt/CeO2 and bimetallic Cu-Pt/CeO2 catalysts supported on different CeO2 nano shapes (polyhedra, rods, and cubes) for hydrogen production from the methanol decomposition reaction. The properties of the bimetallic Cu-Pt/CeO2 samples were found to be support-morphology-dependent, with better copper and ceria reducibility in samples supported on polyhedra and rods. An improvement in oxygen vacancies was observed in the bimetallic system due to the interaction between copper and ceria. The bimetallic samples showed higher H-2 yield compared to platinum, making them suitable for hydrogen production from methanol decomposition.
Article
Materials Science, Multidisciplinary
Cesar B. Morales-Ramos, Marco Camacho-Lopez, Miguel A. Camacho-Lopez, Alfredo R. Vilchis-Nestor, Mariela Flores-Castaneda, Santiago Camacho-Lopez
Summary: Delta-Bi2O3 nanoparticles were successfully synthesized using the laser ablation of solids in liquids (LASL) technique, with a bismuth target irradiated by a ns-pulsed Nd:YAG laser in sodium hypochlorite solution. This method proved to be suitable and simple for obtaining delta-Bi2O3.
Article
Optics
Noe Enriquez-Sanchez, Alfredo R. Vilchis-Nestor, Santiago Camacho-Lopez, Miguel A. Camacho-Lopez, Marco Camacho-Lopez
Summary: In this study, MnOx NPs/C nanosheets composite colloidal suspensions were synthesized by laser ablation in liquids technique. The composite consisted of manganese oxide nanoparticles embedded in carbon nanosheets. Photoluminescence studies revealed that the carbon nanosheets exhibited significantly enhanced PL when combined with MnOx NPs in the composite. Additionally, the MnOx NPs provided intense UV emission to the composite, suggesting potential applications in optoelectronics and biomedicine.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Ireri Segura Gutierrez, Veronica Hernandez Morales, Eric Mauricio Rivera Munoz, Rufino Nava Mendoza, Ludwig Lagarde Soto, Carmen Leticia Peza Ledesma, Doris Solis Casados, Barbara Pawelec
Summary: In this study, novel adsorbents based on 3D hierarchical silica monoliths functionalized with thiol groups were used for the removal of Hg(II) ions from acidic aqueous solution. The results showed that the hierarchical macro-mesoporosity of the functionalized monoliths allowed for better accessibility of Hg(II) to thiol groups, resulting in higher removal efficiency under slightly acidic conditions.
Article
Materials Science, Multidisciplinary
R. D. Avila-Aviles, M. A. Camacho-Lopez, I. G. Becerril-Juarez, E. Castro-Longoria, A. R. Vilchis-Nestor
Summary: Silver nanoparticles (AgNPs) synthesized using plant extracts exhibit significant differences in morphology and polydispersity, with aqueous extracts producing various nanostructures and methanol/isopropanol extracts mainly yielding spheroids. Different Raman signals of amplification were obtained depending on the laser, with better results observed using nanoparticles synthesized with aqueous and isopropanol extracts.
Article
Crystallography
Oswaldo Sanchez-Dena, Susana Hernandez-Lopez, Marco Antonio Camacho-Lopez, Pedro Estanislao Acuna-Avila, Jorge Alejandro Reyes-Esqueda, Enrique Vigueras-Santiago
Summary: The study explores the relationship between the characteristics of zinc oxide films obtained through thermal oxidation of deposited metallic zinc films and the thickness of the zinc films.
Article
Chemistry, Physical
Maria Guadalupe Hernandez-Cruz, Dora Alicia Solis-Casados, Jose Antonio Toledo-Antonio, Jorge Roberto Vargas-Garcia, Miriam Estrada-Flores, Carlos Angeles-Chavez, Maria Antonia Cortes-Jacome, Cecilia Encarnacion-Gomez
Summary: Au nanoparticles supported on TiO2 nanotubes were synthesized by a novel vapor phase impregnation approach and their photocatalytic performance in the decoloration of malachite green dye was evaluated. Characterization techniques revealed that the Au nanoparticles exhibited high dispersion and electronic interaction with TiO2, resulting in a decreased band gap energy and surface plasmonic resonance. These findings provide important insights for the application of photocatalytic materials.
Article
Chemistry, Multidisciplinary
Juan F. Nieto-Alarcon, David A. Gonzalez, Enrique Vigueras-Santiago, Susana Hernandez-Lopez
Summary: Cyclic carbonates are green nontoxic intermediates with various applications. Carbonation of epoxidized vegetable oils is a crucial step in the synthesis of nonisocyanate polyurethane. The reaction conditions, such as temperature and catalyst type, significantly affect the conversion and selectivity of the carbonation reaction.
JOURNAL OF CHEMISTRY
(2023)
Article
Engineering, Multidisciplinary
Jorge Tello-Gonzalez, Susana Hernandez-Lopez, Enrique Vigueras-Santiago, David A. Gonzalez-Martinez, Gonzalo Martinez-Barrera
Summary: The aim of this study is to investigate the adherence and corrosion wear resistance of biobased polymers derived from epoxidized linseed oil (ELO) on galvanized iron sheets. The adhesion and anti-corrosive properties of pure epoxy resin (ELO) were compared with those containing bisphenol A (BFA) and carbon black (CB), polymerized by oxirane ring opening catalyzed by aluminum triflate (ATf). Fourier Transform Infrared Spectroscopy (FTIR) confirmed the formation of different biobased polymers as coatings. Each coating was tested for adhesion and accelerated weathering in a salt spray chamber to evaluate the corrosion resistance performance. The use of BFA provided greater adhesion compared to pure ELO coatings. Additionally, the addition of small amounts of CB improved the appearance, adhesion, and durability of the coating, reducing corrosion on the galvanized sheets. The study also analyzed the interactions between different polymeric matrices and the substrate surface to enhance corrosion resistance.
INGENIERIA Y COMPETITIVIDAD
(2023)
Article
Materials Science, Multidisciplinary
Dora Alicia Solis-Casados, Estefany Rodriguez-Nava, Rafael Basurto, Uvaldo Hernandez-Balderas, Tatiana Klimova, Luis Escobar-Alarcon
Summary: Boron-modified TiO2 thin films with different boron contents were prepared, and the XPS results showed the variation of boron content and the formation of Ti-O-B bonds. Raman spectra indicated that the incorporation of boron improved the crystallinity and decreased the crystallite size. Photoluminescence characterization revealed a suppression of electron-hole recombination rate due to boron incorporation. The photocatalytic activity of boron-modified films was enhanced under solar-simulated irradiation.
BULLETIN OF MATERIALS SCIENCE
(2022)