Article
Chemistry, Physical
Wenlong Liao, Kunpng Liu, Yangjie Chen, Jianping Hu, Ya Gan
Summary: The article reports a facile method to fabricate Au-Ag bimetallic nanoparticles decorated silicon nanowires as 3D SERS substrates, and investigates the effects of Au-Ag bimetallic nanoparticles size and composition ratios on SERS performance through experiments and theoretical simulations. The prepared 3D SERS substrate shows higher SERS enhancement factor and oxidation resistance ability, making it potentially suitable for ultrasensitive detection of trace analytes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Fuqi Yao, Jiamiao Wang, Wei Zhang, Zhetao Wang, Yunfeng Li, Hao Sun, Qiang Chen, Pei Liang
Summary: Noble metal nanoparticles are durable due to their unique Localized Surface Plasmon Resonance (LSPR) properties, making them suitable for medical testing and biosensing. This study presents a microfluidic platform for controlled synthesis of uniform Au@Ag nanocubes in 15 minutes. The synthesized nanocubes show satisfactory results in detecting Raman probe methylene blue and antibiotic sulfadiazine using surface-enhanced Raman scattering (SERS).
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Kerong Wu, Kui Lai, Junfeng Chen, Jie Yao, Shuwen Zeng, Tao Jiang, Hongjie Si, Chenjie Gu, Junhui Jiang
Summary: In this study, a novel surface-enhanced Raman scattering (SERS) immunostructure utilizing Ag nanoparticle/porous carbon (Ag NP/PorC) films as the immunosubstrate and Ag nanocrystals (Ag NCs) as the immunoprobes is presented for ultralow level prostate-specific antigen (PSA) detection. The results demonstrate that the proposed SERS-type immunoassay is highly sensitive and selective to a wide range of PSA concentrations. Moreover, the method successfully detects PSA levels in human serum with a high consistency compared to the chemiluminescence method, with a recovery rate above 90%. Overall, this SERS-type immunoassay provides a promising method for the early diagnosis of prostate cancer.
Article
Engineering, Electrical & Electronic
Junxi Zhang, Taiming Liang, Haoyu Wang, Zhulin Huang, Zhijia Hu, Kang Xie, Wei Zhang, Yongqing Wei, Guiqiang Wang, Jian Yan, Fei Wang, Haiming Jiang, Lin Zhang
Summary: This paper demonstrates a tilted fiber grating based localized surface plasmon resonance (LSPR) biosensor for ultrasensitive glucose detection. The biosensor has high sensitivity and specificity, and has practical utility in detecting glucose in artificial urine.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Analytical
Huizhen Yang, Jiayin Li, Yan Rao, Linan Yang, Yadong Xue, Yu Zhang, Zhanjun Yang, Juan Li
Summary: An ultrasensitive multiplex surface-enhanced Raman scattering (SERS) immunoassay was developed using porous Au-Ag alloy nanoparticles and photonic crystal microspheres. The method displayed ultrahigh sensitivity, wide linear range, and excellent specificity, making it suitable for detecting tumor markers in clinical serum samples.
Article
Chemistry, Analytical
Yuanyuan Yao, Hongding Zhang, Tongtong Tian, Yixin Liu, Rendan Zhu, Ji Ji, Baohong Liu
Summary: A new detection method for miRNA-21 was proposed in this study, achieving ultra-sensitive and quantitative analysis through DSN signal amplification strategy and SERS technology. The method showed excellent performance in detecting miRNA-21 and was successfully applied for monitoring the expression levels of miRNA-21 in different cancer cell lines and human serum.
Article
Chemistry, Analytical
Chenying He, Yuanao Zhang, Ting Wen, Shenghai Pei, Zhixun Wang, Juan Xia, Guangcheng Xi, Wenjie Li, Jiahong Wang, Guoqiang Gu, Guohua Zhong, Lei Wei, Chunlei Yang, Ming Chen
Summary: A novel oxygen vacancy heteropolyacid (HFMO) is developed as a high-performance volume-enhanced Raman scattering (VERS)-active platform, which forms a special coordination bond with the probe molecule at the molecular level. This platform has excellent VERS enhancing effect and high selectivity for molecules containing the imino group. Rating: 9 out of 10.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Abeer Fahes, Aotmane En Naciri, Mohammad Navvabpour, Safi Jradi, Suzanna Akil
Summary: This study presents a novel approach to fabricate ultrasensitive SERS sensors based on silver/PMMA nanocomposites, achieving large-scale, reproducible SERS platforms through a rapid, simple, low-cost method. The platform showed high SERS enhancement factors and reproducible SERS features, without the need for reducing agents, copolymers, or surface functionalization. The synthesis method was successfully applied to prepare opaque SERS platforms, which are essential for photonic devices due to the absence of secondary back reflection.
Article
Chemistry, Applied
Nadzeya Khinevich, Hanna Bandarenka, Siarhei Zavatski, Kseniya Girel, Asta Tamuleviciene, Tomas Tamulevicius, Sigitas Tamulevicius
Summary: Surface-enhanced Raman scattering (SERS) spectroscopy is a promising method for highly sensitive detection of organic and bioorganic objects, but its practical use is hindered by limitations such as reproducibility, versatility, and commercially available substrates. By utilizing substrates composed of noble metals nanoparticles and porous silicon, these limitations can be overcome to achieve better performance and integration in silicon chips.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Aroonsri Ngamaroonchote, Kullavadee Karn-orachae
Summary: In this study, a simple and reproducible SERS substrate based on discarded BD-ROM was developed using electrochemical treatment and chemical reaction to tune the properties of nanoparticles. The results show that the substrate has excellent stability, uniformity, and reproducibility, making it suitable for detecting various substances.
Article
Chemistry, Analytical
Wenlong Liao, Yangjie Chen, Lijuan Huang, Yong Wang, Youting Zhou, Quan Tang, Zhenming Chen, Kunping Liu
Summary: The capillary-based SERS sensor is fabricated for ultrasensitive and selective detection of Hg2+ in water, with a limit of detection as low as 0.03 nM. It offers the advantages of simple preparation, superior stability, and high selectivity, promising for rapid and on-site detection of Hg2+ in water combined with a portable Raman device.
Article
Materials Science, Textiles
Xueyan Bian, Jiangtao Xu, Yi Pu, Jing Yang, Ka-lam Chiu, Shouxiang Jiang
Summary: In this study, silver nanoparticles were deposited onto cotton fabric through magnetron sputtering to create a flexible and ultrasensitive SERS-active substrate. By controlling the argon flow rate and sputtering time, Ag nanoparticles of different sizes were produced to achieve better enhancement effects. The developed substrate demonstrated high enhancement factor, stability, reproducibility, and sensitivity, showing great potential for future practical applications.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Chemistry, Multidisciplinary
Gyubok Lee, Changheon Kim, Dongwoo Kim, Changgi Hong, Taeyong Kim, Moongoo Lee, Kangwon Lee
Summary: Recent studies have shown the potential of artificial enzymes with metal nanoparticles to overcome the limitations of natural enzymes. In this study, chitosan-capped multibranched Au-Ag-Pt nanoparticles (CCNPs) with peroxidase-like activity were synthesized and demonstrated to have increased enzyme activity. The CCNPs showed potential applications in the detection of hydrogen peroxide and glucose, and have been tested in human serum.
Article
Spectroscopy
Guanwen Su, Leping Dang, Guozhao Liu, Tingyu Feng, Wei Wang, Chenguang Wang, Hongyuan Wei
Summary: In this study, a 3D ZnO/Ag substrate was fabricated using porous zeolite imidazole frameworks (ZIF-8) derived ZnO nanoparticles (NPs) followed by evaporation-induced self-assembly of Ag NPs over it. The substrate showed ultra-sensitivity for detecting various types of molecules and exhibited excellent photocatalytic performance. The simulations suggested that the widespread hot spot structures on the substrate are the main reason for its SERS ultra-sensitivity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Materials Science, Multidisciplinary
Shuqian Zhang, Liping Wu, Wanlin Wang, Wang Zhang, Jiajun Gu, Qinglei Liu, Di Zhang
Summary: In this study, a gyroid-structured Au-Ag bimetal plasmonic material GSPMMs@Au was successfully fabricated by controlling the galvanic reaction time. Simulation results showed that plasmonic coupling between the Au-Ag interface significantly enhanced the SERS performance, leading to a detection limit of 3.4 x 10(-18) M for DEHP molecules, which is the best result reported to date.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Review
Virology
Lucie Hozakova, Barbora Vokata, Tomas Ruml, Pavel Ulbrich
Summary: Various strategies have been developed to combat viral infections, including vaccines and antiviral compounds; The combination of multiple antiviral strategies or compounds is crucial in RNA virus research; Research on compounds targeting viral capsid proteins of RNA viruses is a rapidly evolving field.
Article
Medicine, General & Internal
Pauline Bakibinga, Caroline Kabaria, Ziraba Kasiira, Peter Kibe, Catherine Kyobutungi, Nelson Mbaya, Blessing Mberu, Shukri Mohammed, Anne Njeri, Iqbal Azam, Romaina Iqbal, Ahsana Nazish, Narijis Rizvi, Syed A. K. Shifat Ahmed, Nazratun Choudhury, Ornob Alam, Afreen Zaman Khan, Omar Rahman, Rita Yusuf, Doyin Odubanjo, Motunrayo Ayobola, Olufunke Fayehun, Akinyinka Omigbodun, Mary Osuh, Eme Owoaje, Olalekan Taiwo, Richard J. Lilford, Jo Sartori, Samuel Watson, Peter J. Diggle, Navneet Aujla, Yen-Fu Chen, Christopher Conlan, Paramjit Gill, Frances Griffiths, Bronwyn Harris, Jason Madan, Helen Muir, Oyinlola Oyebode, Vangelis Pitidis, Joao Porto de Albuquerque, Simon Smith, Celia Taylor, Grant Tregonning, Philip Ulbrich, Olalekan A. Uthman, Ria Wilson, Godwin Yeboah, Ji-Eun Park, Sam Watson
Summary: This study surveyed the availability and use of primary care services in slum populations in four countries. The majority of consultations were with doctors, nurses, and pharmacies, and were mainly for acute symptoms. However, costs were high compared to income and usage rates were lower than in high-income countries.
Article
Nanoscience & Nanotechnology
Vasilii Burtsev, Elena Miliutina, Pavel Ulbrich, Roman Elashnikov, Vaclav Svorcik, Martin Orendac, Oleksiy Lyutakov
Summary: This paper presents a method for plasmon-induced organic reactions using the coupling enhancement between silver nanoparticles and gold gratings, which leads to highly efficient plasmon-triggered reactions.
ACS APPLIED NANO MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Leonid Sushytskyi, Andriy Synytsya, Tamilla Mirzayeva, Tereza Kalouskova, Roman Bleha, Jana Copikova, David KubaC, Tomas Grivalsky, Pavel Ulbrich, Petr Kastanek
Summary: The water-insoluble part of Parachlorella kessleri HY1 biomass was subjected to various extraction methods to obtain cell-wall polysaccharides. Proteins and different polysaccharides were identified and their potential role in the cell wall structure of microalgae was discussed.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Microbiology
Marco A. Lopez Marin, Jachym Suman, Kunal Jani, Pavel Ulbrich, Tomas Cajthaml, Petr Pajer, Jacqueline Wolf, Meina Neumann-Schaal, Michal Strejcek, Ondrej Uhlik
Summary: A novel orange-golden iridescent bacterium, Pedomonas mirosovicensis, was isolated from compost soil. It belongs to the family Sphingosinicellaceae and forms a distinct lineage within this family. Phylogenetic and genomic analyses confirmed its uniqueness.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Vladislav Buravets, Frantisek Hosek, Ladislav Lapcak, Elena Miliutina, Petr Sajdl, Roman Elashnikov, Vaclav Svorcik, Oleksiy Lyutakov
Summary: In this study, a novel, simple, and scalable method for the synthesis of tantalum disulfide (TaS2) is reported, using CS2 as a sulfurizing agent and Ta2O5 as a metal precursor. The structure of the created TaS2 flakes was analyzed, and a tuning between 1T (metallic) and 3R (semiconductor) phases was achieved by varying the reaction conditions. The electrocatalytic activity of the synthesized materials was significantly enhanced after electrochemical self-activation, reaching a level comparable to that of Pt. This work provides a scalable and simple synthesis method for transition-metal sulfides that could replace platinum catalysts in water splitting technology.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Anna Zabelina, Elena Miliutina, Denis Zabelin, Vasilii Burtsev, Vladislav Buravets, Roman Elashnikov, Viktorie Neubertova, Martin St'astny, Daniela Popelkova, Jan Lancok, Sergii Chertopalov, Martin Paidar, Andrii Trelin, Alena Michalcova, Vaclav Svorcik, Oleksiy Lyutakov
Summary: Hybridization of catalytic and plasmon active materials is proposed to efficiently improve photo-electrochemical (PEC) water splitting. The plasmon coupling between surface plasmon polariton (SPP) and localized surface plasmon (LSP) is utilized to achieve gigantic light concentration and trigger the catalytic activity of titanium diboride (TiB2) flakes. The catalytic activity enhancement of TiB2 flakes through coupled plasmon triggering is investigated in various conditions, showing the excitation of electron-hole pairs and their separation/acceleration in strong plasmons field. This work presents a novel approach for realizing a symmetric and less pH-sensitive catalyst for PEC water splitting.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Jiri Stulik, Radek Polansky, Petr Kubersky, Denis Zabelin, Oleksiy Lyutakov, Zdenka Kolska, Vaclav Svorcik
Summary: An ammonia gas sensor based on nanostructured polypyrrole functionalized by carboxylic groups (PPyCOOH) was prepared. The sensor exhibited a strong response to ammonia and measures were taken to reduce its sensitivity to humidity. The functionalization with metal-organic framework (MAF-6) and the incorporation of multiwall carbon nanotubes (MWCNTs) were effective in reducing the humidity dependence of the sensor. Rating: 7 out of 10.
IEEE SENSORS JOURNAL
(2023)
Article
Microbiology
Marco A. Lopez Marin, Jachym Suman, Kunal Jani, Pavel Ulbrich, Tomas Cajthaml, Alena Filipova, Petr Pajer, Meina Neumann-Schaal, Michal Strejcek, Ondrej Uhlik
Summary: The Actinobacterial strain A5X3R13(T) was identified as a distinct lineage within the family Nocardioidaceae based on phylogenetic and genomic analyses. It is proposed as a new genus and species, Solicola gregarius gen. nov., sp. nov., based on its phylogenetic and phenotypic characteristics compared to other members of the family Nocardioidaceae.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2023)
Article
Chemistry, Analytical
T. Martan, V. Prajzler, D. Mares
Summary: The paper introduces the design and development of two types of sensors for the local detection of gaseous carbon dioxide on a microscopic scale. Both sensors exhibit good linearity and sensitivity in the range of 0%-10.6% CO2 concentration. The second sensor, based on a 3 μm silica glass taper tip, is particularly suitable for laboratory testing of microorganisms and cells that actively consume gaseous carbon dioxide.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Anastasia Skvortsova, Andrii Trelin, Antonin Sedlar, Mariia Erzina, Martina Travnickova, Lucie Svobodova, Zdenka Kolska, Jakub Siegel, Lucie Bacakova, Vaclav Svorcik, Oleksiy Lyutakov
Summary: The development of advanced methods of SERS-CNN data analysis provides an effective solution for determining the species and behavior of microorganisms. Machine learning allows precise analysis of complex spectra of biological samples and provides accurate decisions for specific tasks. This article demonstrates the application of the SERS-CNN approach in remote observation of mesenchymal stem cell behavior, enabling non-invasive estimation of cell survival and proliferation rate using Raman measurements and advanced spectra data processing.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Pharmacology & Pharmacy
Robert Pola, Matej Vicha, Jiri Trousil, Eliska Grosmanova, Michal Pechar, Anna Rumlerova, Martin Studenovsky, Emilie Kucerova, Pavel Ulbrich, Barbora Vokata, Tomas Etrych
Summary: Microbial resistance is a significant issue in modern medicine. Antimicrobial peptides have shown potential as a solution, but their limitations in stability, toxicity, and immunogenic response have hindered their clinical application. In this study, polymer-antibacterial peptide constructs were designed and synthesized. The constructs demonstrated antibacterial activity against both gram-positive and negative bacteria, with the peptide being released from the polymer carrier in response to a pH decrease.
Article
Engineering, Biomedical
Denis Nazarov, Ilya Ezhov, Natalia Yudintceva, Maxim Shevtsov, Aida Rudakova, Vladimir Kalganov, Vladimir Tolmachev, Yuliya Zharova, Oleksiy Lutakov, Ludmila Kraeva, Elizaveta Rogacheva, Maxim Maximov
Summary: The combination of titania nanofilms and silver nanoparticles is a promising material for titanium implant coatings, exhibiting antibacterial activity and osseointegration-induced properties. In this study, TiO2 nanolayer/Ag NP structures were successfully prepared on titanium disks using atomic layer deposition. The samples showed high antibacterial activity, differentiation in the osteogenic direction, and non-cytotoxicity, indicating the success of the combining of TiO2 and Ag to produce a multifunctional biocompatible and bactericidal material.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2022)
Article
Chemistry, Physical
D. Zabelin, A. Zabelina, A. Tulupova, R. Elashnikov, Z. Kolska, V Svorcik, O. Lyutakov
Summary: We propose an advanced plasmon-triggered Z-scheme for efficient overall water splitting using longer wavelength photons. The study demonstrates that plasmon triggering allows for the utilization of low-energy photons and can synergistically increase hydrogen production under certain conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Nanoscience & Nanotechnology
Roman Elashnikov, Silvie Rimpelova, Oleksiy Lyutakov, Vladimira Svobodova Pavlickova, Olena Khrystonko, Zdenka Kolska, Vaclav Svorcik
Summary: In this study, stimuli-responsive antibacterial nanofibers were prepared by blend electrospinning. The release of ciprofloxacin and its antibacterial activity were dependent on the nanofiber composition. The nanofibers exhibited enhanced release and antibacterial activity below the lower critical solution temperature (LCST). Furthermore, the nanofibers showed good cell compatibility and reduced bacterial attachment. These results suggest that the proposed nanofibers have great potential as wound healing materials with reduced risk of bacterial infection.
ACS APPLIED BIO MATERIALS
(2022)
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)