Article
Materials Science, Multidisciplinary
Liang He, Jimmy Wu, Derwin Lau, Charles Hall, Yu Jiang, Bharat Thapa, Yijun Gao, Tracey Yeung, Alexander Wotton, Alison Lennon, Neeraj Sharma, Robert J. Patterson
Summary: Amorphous materials, such as MnO2-x doped with Ag and Cu, show improved cyclability as electrodes in Li-ion batteries, with the Ag0.004Cu0.002MnO2-x nanomaterial composition demonstrating the best performance after 100 charge-discharge cycles. This work contributes to the development of high capacity Li-ion battery electrodes with excellent cyclability and low series impedance.
Article
Geochemistry & Geophysics
Marzia Miletto, Xiangli Wang, Noah J. Planavsky, George W. Luther, Timothy W. Lyons, Bradley M. Tebo
Summary: Stable chromium isotopes have been used as a paleoredox proxy to track atmospheric oxygenation, with previous belief that Cr oxidation is limited to terrestrial settings. However, recent research shows rapid marine Cr(III) oxidation linked to microbial Mn(II) oxidation, challenging the traditional view. Initial partial oxidation of Cr(III) to Cr(VI) can cause a small isotope fractionation, calling for a reevaluation of the link between Cr isotope values and atmospheric oxygenation.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Ting Xing, Mingqing Sun, Shiying Guo, Oliver Harris, Yiren Zhong, Lingyu Tang, Shengli Zhang, Mei Yang, Hui Xia
Summary: This study successfully developed a high-performance anode free from Mn(II) dissolution by smartly confining manganese monoxide into nitrogen-rich carbon nanosheets, achieving high specific capacitance and excellent cycling stability, which can be used in aqueous asymmetric supercapacitors (ASCs). The ASC with this anode delivers a remarkably high specific energy, outperforming products with carbon anodes.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Tara Lyons-Darden, Jason L. L. Blum, Mark W. W. Schooley, Melissa Ellis, Jennifer Durando, Daniel Merrill, Adriana R. Oller
Summary: The acute toxicity of nickel oxide nanoparticles (NiO NPs) was evaluated in rats through oral and inhalation exposure. The LD50 for oral exposure and LC50 for inhalation exposure were determined to be >5000 mg/kg and >5.42 mg/L, respectively. These results suggest that NiO NPs do not exhibit serious acute toxicity and do not warrant an acute toxicity classification.
Article
Crystallography
Kaiyin Chen, Lauren Bocknek, Bruce Manning
Summary: The study found that naturally occurring Cr(III) will readily oxidize to Cr(VI) when it comes in contact with MnO2, forming a highly mobile and toxic groundwater contaminant.
Review
Chemistry, Multidisciplinary
Sharlee L. More, Michael Kovochich, Tara Lyons-Darden, Michael Taylor, Alexandra M. Schulte, Amy K. Madl
Summary: Nickel nanomaterials have exceptional physical and chemical properties, which have been utilized in various applications, but may also pose potential adverse health effects. This review critically evaluates the toxicity data of oxidic nickel nanoparticles, emphasizing physico-chemistry properties, model system appropriateness, biodistribution, and exposure routes. Future studies are needed to better understand the dose-response relationship and potential biological responses of nickel nanomaterials.
Article
Chemistry, Multidisciplinary
Nazimul Hoque, Seonghwan Lee, Young-Bin Park, Subhasish Roy, Manash J. Baruah, Subir Biswas, Gautam Gogoi, Tonmoy J. Bora, Rupjyoti Dutta, Kusum K. Bania
Summary: The influence of different surface matrices on the electrocatalytic ability of Ni(OH)2 combined with MnO2 was studied. The interface of zeolite-Y and multi-walled carbon nanotubes decorated with MnO2-Ni(OH)2 catalyst showed the highest current density.
Article
Environmental Sciences
Yaqi Jiang, Pingfan Zhou, Tengtao Ma, Muhammad Adeel, Noman Shakoor, Yuanbo Li, Mingshu Li, Manlin Guo, Yukui Rui
Summary: This study explores the application of manganese-based nanomaterials (Mn-based NMs) in agriculture and finds that proper application can enhance the growth and stress resistance of soybean, but excessive application can inhibit the absorption of mineral elements in roots.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Qian Zheng, Shuxin Tu, Jingtao Hou, Chunlan Ni, Mengqing Wang, Lu Ren, Mingxia Wang, Menghua Cao, Shuanglian Xiong, Wenfeng Tan
Summary: The study showed that Fe-Mn binary oxide maintains excellent stability for As(III) removal, attributed to the rapid return of aqueous Fe(II) and Mn(II) to the solid surface and subsequent formation of new mineral phases mediated by Fe and Mn oxides.
Article
Chemistry, Inorganic & Nuclear
Iryna Stepanenko, Pavlo Mizetskyi, Ewelina Orlowska, Lukas Bucinsky, Michal Zalibera, Barbora Venosova, Martin Clemancey, Genevieve Blondin, Peter Rapta, Ghenadie Novitchi, Wolfgang Schrader, Dominik Schaniel, Yu-Sheng Chen, Martin Lutz, Jozef Kozisek, Joshua Telser, Vladimir B. Arion
Summary: This study focuses on the synthesis and characterization of multimetal cluster complexes containing the ruthenium nitrosyl moiety {RuNO}(6), investigating their magnetic properties and electronic structures. The complexes exhibit antiferromagnetic interactions and are capable of releasing nitric oxide in the solid state. Various analytical techniques were used to study their properties and behavior.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Pasinee Panith, Pichitchai Butnoi, Varol Intasanta
Summary: This study introduces a novel hybrid faradaic structure to improve the performance of biomass-derived carbon-based supercapacitors (SCs). By carefully designing the organic-inorganic hybrid composition, nanostructures, porosity, surface area, and active redox reactions, pure lignin carbon nanofibers (LCNFs) incorporated with flower-like, multi-metal, and intrinsically capacitive nanoparticles were fabricated as flexible and binder-free electrodes for SCs. The experimental results demonstrate that the specific capacitance of the SCs can be significantly increased and the cycling stability can be improved by adding nanoparticles and using a mixed electrolyte.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Biochemistry & Molecular Biology
Tong Gu, Zhenghu Tong, Xue Zhang, Zhiyong Wang, Zhen Zhang, Tzann-Shun Hwang, Lin Li
Summary: This study demonstrates that carbon metabolism acts as a significant modulator of Mn oxide deposit amount (MnODA) and formation in a soilborne bacterium.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Chun Cai, Dantong Zhang, Qi Zhang, Kunfeng Chen, Wenchao Hua, Chao Peng, Dongfeng Xue
Summary: The stability of lattice oxygen and transition metal sites in LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode were systematically explored, and the importance of manganese was demonstrated. The effects of lithium vacancies on lattice oxygen and transition metal were investigated through vacancy formation energy, unpaired spins, and net charge. This study provides insights into oxygen release and transition metal dissolution in Ni-rich NCM811.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Ilzira A. Minigalieva, Vladimir G. Panov, Vladimir B. Gurvich, Larisa Privalova, Svetlana Klinova, Boris A. Katsnelson
Summary: Our study investigates the subchronic toxicity of binary mixtures of nanoparticles and finds that their combined toxicity can be either additive or deviate from it depending on the outcome, dose ratio, and levels of effect. We also successfully apply a previously developed approach for assessing the combined toxicity of metal ions to characterize the toxicity of ternary mixtures of nanoparticles.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Robert D. Bradley, Brennan D. Mcmanus, Jessalyn G. Yam, Veronica Carta, Ana Bahamonde
Summary: This work demonstrates the dominance of a Ni(0/II/III) cycle in Ni-photoredox amide arylation, contrasting with other Ni-photoredox C-heteroatom couplings that operate via Ni(I/III) self-sustained cycles. The kinetics data supports Ni(0)-mediated oxidative addition into the aryl bromide as the initial step. Ligand exchange after oxidative addition yields a Ni(II) aryl amido complex as the catalyst resting state. Oxidation of this Ni(II) aryl amido intermediate is required for functionalized amide product formation. The mechanism involves a rate-limiting photochemically-mediated Ni(II/III) oxidation for C-N reductive elimination.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Qingyuan Hu, Huimin Liao, Xin Liu, Li Jin, Kexin Song, Yongyong Zhuang, Zhuo Xu, Vladimir Ya Shur, Xiaoyong Wei
Summary: In this study, a thermal annealing and high temperature poling approach is proposed to enhance the piezoelectricity of Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 crystals. The manipulation of defects and defect polarization orientation results in a more polarized crystal. The improved piezoelectric property achieved under a maintained Curie temperature indicates the feasibility of the approach.
JOURNAL OF MATERIOMICS
(2023)
Article
Nanoscience & Nanotechnology
Wen Wang, Leiyang Zhang, Wenjing Shi, Yule Yang, Denis Alikin, Vladimir Shur, Zhihao Lou, Dong Wang, Amei Zhang, Jinghui Gao, Xiaoyong Wei, Hongliang Du, Feng Gao, Li Jin
Summary: In this paper, a cooperative optimization strategy is proposed to achieve outstanding energy-storage performance in NBST-based ceramics. Substituting NN for NBST generates an ergodic state and induces polar nanoregions. Applying VPP to the ceramics further increases compactness and breakdown strength. The optimized ceramics possess improved energy-storage characteristics and temperature adaptability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Pharmacology & Pharmacy
Tatiana V. Bushueva, Vladimir G. Panov, Ilzira A. Minigalieva, Larisa I. Privalova, Maria S. Vedernikova, Vladimir B. Gurvich, Marina P. Sutunkova, Boris A. Katsnelson
Summary: We previously demonstrated that the assessment of cytotoxicity of different nanoparticles on stable cell cultures may result in either monotonic or non-monotonic dose-response relationships, suggesting an extended understanding of the hormesis paradigm. In this study, we evaluated the cytotoxic effect of copper-oxide and/or selenium-oxide nanoparticles on human fibroblasts by inhibiting oxygen uptake and modulating mitochondrial respiratory function. Our findings support the hypothesis that the type of dose-response relationship is closely associated with mitochondrial respiratory function. However, the addition of specific agents did not significantly alter the observed relationship or the combined action of the nanoparticles.
Article
Physics, Applied
V. Ya. Shur, M. S. Kosobokov, A. V. Makaev, D. K. Kuznetsov
Summary: The ordering of isolated circular ferroelectric nanodomains was observed in lithium tantalate crystals through multiple scanning with infrared laser irradiation. This ordering effect was attributed to domain formation and growth under the influence of alternating pyroelectric field during heating and cooling processes. Circular domains appeared due to 1D to 2D shape transformation and grew by merging with newly formed domains during subsequent scanning. The ordering of the domain pattern was characterized by an increase in the autocorrelation function peak, indicating domain interaction. This mechanism was confirmed through computer simulation based on the analogy between domain and crystal growth. The discovered domain ordering effect bears similarity to similar effects in magnetic materials.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
Wen Wang, Leiyang Zhang, Yule Yang, Wenjing Shi, Yunyao Huang, D. O. Alikin, V. Ya. Shur, Zhihao Lou, Amei Zhang, Xiaoyong Wei, Dong Wang, Feng Gao, Hongliang Du, Li Jin
Summary: This study achieved comprehensive exceptional energy storage performance in Na0.5Bi0.5TiO3-Sr0.85Bi0.1TiO3 (NBT-SBT)-based ceramics through stepwise optimization by substituting Bi(Mg0.5Sn0.5)O-3 (BMS) and optimizing the formation process. The introduction of Mg2+ and Sn4+ ions at the B-site induced polar nanoregions, and the viscous polymer process (VPP) improved the polarization difference and breakdown strength. As a result, the ceramics exhibited ultrahigh energy storage density and high efficiency, along with excellent temperature adaptability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Sergey Kudryashov, Galina Kriulina, Pavel Danilov, Evgeny Kuzmin, Alexey Kirichenko, Nikolay Rodionov, Roman Khmelnitskii, Jiajun Chen, Elena Rimskaya, Vladimir Shur
Summary: Natural IaA+B diamonds were exposed to laser pulses, resulting in the formation of photoluminescent nanostructured microtracks. The laser exposure led to an increase in the yield of NV centers and a decrease in the yield of N3a, H4, and H3 centers. The attachment of vacancies to nitrogen centers and the splitting of highly aggregated nitrogen centers were considered as the mechanisms behind these observations.
Article
Crystallography
Evgeniy Savelyev, Andrey Akhmatkhanov, Mikhail Kosobokov, Herve Tronche, Florent Doutre, Tommaso Lunghi, Pascal Baldi, Vladimir Shur
Summary: This experimental study investigates the kinetics of abnormal domain structure in lithium niobate single crystals with a surface layer modified by soft proton exchange. Two types of domain structure evolution were observed: the traditional growth of hexagonal domains at fields higher than 21.5 kV/mm and the abnormal growth of stripe domains at fields ranging from 3.8 to 21.5 kV/mm. The formation and growth of stripe domains were analyzed using a modified Kolmogorov-Avrami approach, and a controllable creation of quasi-periodic stripe domains was demonstrated. The abnormally low threshold fields were attributed to the presence of a built-in field induced by soft proton exchange.
Article
Chemistry, Analytical
Sergey Kudryashov, Elena Rimskaya, Evgeny Kuzmin, Galina Kriulina, Victoria Pryakhina, Andrey Muratov, Roman Khmelnitskii, Evgeny Greshnyakov, Pavel Danilov, Vladimir Shur
Summary: Natural diamonds were investigated using advanced chemical and structural analytical tools to comprehensively characterize their optically blind and optically active nitrogen impurity centers. The study established compositional relationships between X-ray photoelectron spectroscopy and Fourier-transform infrared vibrational spectroscopy signals of nitrogen impurity defects, and correlated depth-dependent spatial distributions of photoluminescence-active nitrogen defects with the carbon lattice signals. The study also revealed connections between local structural defects and stress-sensitive impurity distributions in bulk diamonds. These findings demonstrate the instrumental opportunities for in situ studies of diamond micro-features.
Article
Materials Science, Ceramics
Xiyu Ma, Wenjing Shi, Yule Yang, D. O. Alikin, Y. Ya Shur, Jinghui Gao, Xiaoyong Wei, Gang Liu, Hongliang Du, Li Jin
Summary: Electrocaloric refrigeration is an emerging solid-state technology with advantages of high efficiency, miniaturization, eco-friendliness, and low cost. This paper investigates Ba(Ti1-xSnx)O-3 ceramics and reveals their structural, dielectric, ferroelectric, electrocaloric, and electrostrictive characteristics. The results show that increasing Sn4+ concentration leads to lower dielectric peaks and a phase diagram is constructed based on dielectric characteristics. The study also demonstrates a giant adiabatic temperature change of 6.36 K in the x = 0.04 ceramic sample and temperature and composition-insensitive electrostrictive behavior.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
L. V. Gimadeeva, Q. Hu, X. Wei, D. O. Alikin, V. Ya. Shur
Summary: The influence of cooling rate on the domain structure and piezoelectric properties of barium titanate ceramics was investigated. It was found that a higher cooling rate led to larger domain sizes, resulting in an increased average piezoelectric response due to better polarization alignment.
Article
Chemistry, Physical
Michael Kovalev, Ivan Podlesnykh, Alena Nastulyavichus, Nikita Stsepuro, Irina Mushkarina, Pavel Platonov, Evgeniy Terukov, Sergey Abolmasov, Aleksandr Dunaev, Andrey Akhmatkhanov, Vladimir Shur, Sergey Kudryashov
Summary: Light-trapping structures on various material surfaces have gained significant attention for their role in science and technology. This article explores different methods for manufacturing light-trapping black silicon, including laser, chemical, and hybrid methods. The authors introduce a hybrid chemical/laser texturing method, combining laser post-texturing with pyramidal structures obtained from chemical etching. The results show that laser texturing of chemically microtextured silicon wafers takes significantly less time and results in lower reflectance compared to purely chemical treatment.
Article
Optics
Yulia Gulina, Jiaqi Zhu, Alexey Gorevoy, Mikhail Kosobokov, Anton Turygin, Boris Lisjikh, Andrey Akhmatkhanov, Vladimir Shur, Sergey Kudryashov
Summary: Double-track microstructures were induced in a z-cut lithium niobate crystal using 1030nm 240fs ultrashort laser pulses. The topography of the microstructures was characterized using atomic force microscopy in piezoelectric response mode. The spatial positions of laser-induced modification regions inside the crystal could be predicted using simple analytical expressions.
Article
Physics, Applied
Evgeniy Savelyev, Andrey Akhmatkhanov, Boris Slautin, Herve Tronche, Florent Doutre, Tommaso Lunghi, Pascal Baldi, Vladimir Shur
Summary: This paper presents the results of an experimental study on the local polarization reversal and domain creation in lithium niobate single crystals using a biased tip of scanning probe microscope (SPM). The study shows that by modifying the surface layer with soft proton exchange (SPE), isolated domains and stripe domain structures can be created. The study also demonstrates that the creation of domains can be controlled by different switching modes, leading to improved regularity of the domain structure.
JOURNAL OF ADVANCED DIELECTRICS
(2023)
Article
Materials Science, Ceramics
Nikita A. Boldyrev, Eugene I. Sitalo, Lidia A. Shilkina, Alexander V. Nazarenko, Andrei D. Ushakov, Vladimir Y. Shur, Larisa A. Reznichenko, Ekaterina V. Glazunova
Summary: In this study, ceramics with quasi-binary concentration were prepared and their crystal structure, dielectric properties, and piezoelectric performance were investigated. The results showed that these ceramics had a cluster morphology and exhibited relaxor-like behavior.
CERAMICS-SWITZERLAND
(2023)
Article
Materials Science, Biomaterials
Denis Alikin, Vladimir Yuzhakov, Larisa Semiletova, Vladislav Slabov, Dmitrii Kuznetsov, Lubov Gimadeeva, Vladimir Shur, Svitlana Kopyl, Andrei Kholkin
Summary: Self-organized peptides are unique materials with diverse applications in biology, medicine, and nanotechnology. A new method for controlled deposition of solid films of diphenylalanine (FF) has been proposed, which shows advantages over previous liquid phase crystallization methods. The study investigates the mechanism of solid-state transformation from amorphous to crystalline phase and highlights the critical role of water diffusion in the growth of FF films.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)