Article
Materials Science, Composites
Chen Li, Renhao Li, Pei Lyu, Yun Wang, Chunhua Zhang, Fangyin Dai, Xin Liu
Summary: Recycling leather waste using a cost-effective mechanical method, leather-like composites with good mechanical properties were prepared by combining TPU with LP from leather waste. The use of binary solvents in preparing the composite film resulted in significantly higher toughness and excellent solvent resistance, showing potential for practical applications.
COMPOSITES COMMUNICATIONS
(2021)
Article
Polymer Science
Adrian Szewczyk, Adrianna Skwira, Marta Ginter, Donata Tajer, Magdalena Prokopowicz
Summary: The microwave-assisted wet precipitation method was used to prepare materials consisting of mesoporous silica and calcium orthophosphates. Different types of calcium orthophosphates were formed on the silica surface depending on the calcification coating solution, and pharmaceutical forms with retained mineralization properties were successfully produced.
Article
Engineering, Mechanical
Lin Zhang, Guoxin Xie, Shuai Wu, Shiguang Peng, Xiaoqing Zhang, Dan Guo, Shizhu Wen, Jianbin Luo
Summary: By adding oil-loaded microcapsules into epoxy resin, ultralow friction polymer composites can significantly reduce friction coefficient and wear rate. The released PAO oil from the microcapsules during the friction process forms a lubricating film to prevent direct contact of two rubbing surfaces, leading to extremely low friction coefficient and wear rate.
Article
Chemistry, Analytical
Berrin Kucukturkmen, Wali Inam, Fadak Howaili, Mariam Gouda, Neeraj Prabhakar, Hongbo Zhang, Jessica M. Rosenholm
Summary: Microfluidics has been used to coat mesoporous silica nanoparticles (MSNs) with polymeric layers for achieving high protein loading and retention. This study demonstrates the potential of microfluidic technologies in the design of protein delivery systems, allowing for multicomponent systems and preservation of protein stability.
Article
Materials Science, Ceramics
Yu Zhang, Li Xiang, Qianqian Shen, Xuesha Li, Tianqiong Wu, Junchuan Zhang, Chaoyin Nie
Summary: In this study, a dual-mesoporous silica aerogel was synthesized using MTES and TEOS as precursors, demonstrating unique structure and excellent properties. The aerogel can efficiently separate oil contaminants from surfactant-stabilized emulsions, while also exhibiting outstanding hydrophobicity and sorption capacity.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Polymer Science
Sadaki Samitsu
Summary: This study successfully prepared mesoporous crystalline microparticles of a commercially available high-performance polymer, poly(ether sulfone) (PES), and characterized their microstructure and mesoporosity. The formation mechanism of PES microparticles was elucidated, providing important insights for the fabrication of mesoporous polymer particles.
Article
Engineering, Environmental
Haizhou Tian, Sha Cheng, Jianghong Zhen, Ziqiang Lei
Summary: The rapid evaporation of water in arid areas is a serious problem for plant growth due to water shortage. In this study, a superabsorbent polymer with excellent water absorbency was synthesized through aqueous solution polymerization. The polymer demonstrated satisfying performances including high water absorbency, long water retention, and fast swelling under different conditions. The research also showed that the polymer could effectively inhibit soil water evaporation, providing a new direction for the application of superabsorbent polymers.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Biochemistry & Molecular Biology
Georgiana Dolete, Bogdan Purcareanu, Dan Eduard Mihaiescu, Denisa Ficai, Ovidiu-Cristian Oprea, Alexandra Catalina Birca, Cristina Chircov, Bogdan Stefan Vasile, Gabriel Vasilievici, Anton Ficai, Ecaterina Andronescu
Summary: Mesoporous silica has been widely used as an efficient drug delivery system due to its porous structure. In this study, a novel synthesis method using Tween-20 and starch as templates for mesoporous silica synthesis was developed. The physicochemical features of the obtained material were analyzed, and vancomycin was loaded onto the material using three different approaches. The release rate and drug adsorption depth varied depending on the loading method.
Article
Materials Science, Composites
Ning Zhang, Yong Pang, Zhaohui Li, Chuanhui Yang, Lu Zong, Hongsheng Yang, Hao Wu, Yongxin Duan, Jianming Zhang
Summary: In this study, biodegradable PVA-based elastomers with excellent solvent barrier property and high elasticity were fabricated. The water-soluble resin PAE was used as a crosslinker to effectively crosslink carboxyl PVA chains. The collaborative triple networks in the prepared PVA composites contribute to their excellent elastomer behavior. Furthermore, these materials demonstrated highly efficient barrier performance against chemical solvents permeation as chemical protective gloves, and showed a high degradation rate.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Kenji Murakami, Ayumi Imai, Ayano Nakamura
Summary: This study aimed to synthesize mesoporous silica (MS) coated with poly(N-isopropylacrylamide) (PNIPAM) hydrogel and investigate its influence on the aggregation and adsorption behavior of the composite. The results showed that the amount of immobilized PNIPAM hydrogel can be controlled by changing the amount of cross-linker. The PNIPAM hydrogel coating had slight influence on the MS structure and the amount of adsorbed methyl orange.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Multidisciplinary
E. Wondu, Z. C. Lule, J. Kim
Summary: Thermoplastic polyurethane composites with excellent dielectric constant and high thermal conductivity are successfully prepared using CNT@BaTiO3 as a filler through low-speed melt extrusion method. Proper surface modification of filler particles ensures their complete dispersion in the thermoplastic polyurethane matrix. The prepared composite exhibits improved thermal stability, mechanical properties, thermal conductivity, and dielectric properties compared to the neat thermoplastic polyurethane matrix.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Materials Science, Characterization & Testing
Eyob Wondu, Zelalem Chernet Lule, Jooheon Kim
Summary: This study aims to fabricate a composite material with a high dielectric constant and suitable thermal conductivity, consisting of thermoplastic polyurethane (TPU) and carbon nanotube (CNT)-covered strontium titanate (SrTiO3). The results showed that the dielectric constants of the composites with 40% CNT-covered SrTiO3 were three times higher than the pure TPU matrix. The thermal conductivity was significantly improved by 9 times compared with the pure TPU, while the tensile strength and thermal stability were minimally affected.
Article
Materials Science, Ceramics
Xiaohuan Chen, Yan Zhang, Fang Zhao, Mingqiang Tang, Mingliang Xiang, Juntao Huo, Meng Gao, Yaocen Wang, Noriharu Yodoshi, Liyuan Zhang, Junqiang Wang
Summary: Soft magnetic composites (SMCs) are widely used in power and electronic fields for inductance components. Insulation coating is crucial for SMCs, and a novel solution called phytic acid/silane (PAS) organic-inorganic hybrid solution was developed for efficient formation of insulating coatings. FeSiBCCr@PAS powder cores with a core-shell structure were successfully prepared through chemical reaction in the modified PAS solution. The study investigated the effects of insulating coating content on the magnetic and mechanical properties of the powder cores, showing significantly improved performance.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Review
Engineering, Environmental
Hong Wang, Liang Yang, Yanning Yang, Dongsheng Zhang, Aifen Tian
Summary: Intelligent materials are significant in the modern development of high-tech new materials, achieving the structural functionalization and functional diversification. Ionic polymer metal composite (IPMC) artificial muscle, as a new type of intelligent material, is considered as the ideal material for developing the next generation of flexible robots. This paper analyzes the working principle of IPMC from a microscopic perspective and categorizes the fabrication technologies into single and combined techniques, with an emphasis on the effective combination of different methods. The properties of IPMC prepared by different methods are analyzed and compared, and the research advances in flexible actuation robots and intelligent sensing systems are examined. The future development directions are also discussed. This paper provides guidance for fabricating high-performance IPMC and lays a theoretical foundation for the design and application of IPMC.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Jiani Yu, Lidong Wang, Zhaoyuan Liu, Jie Xu, Yingying Zong
Summary: Graphene reinforced copper composites have potential applications in various industries, but the current preparation methods are complicated and expensive. This study successfully prepared graphene reinforced copper composites with excellent overall properties by combining electrodeposition, thermal reduction, and sintering. The addition of graphene improved the nucleation process and refined the grains, resulting in improved mechanical properties. The copper matrix was purified, and the oxygen-containing functional groups of graphene oxide were partially repaired, leading to improved electrical properties. Compared to the one-step electrodeposition method, the graphene in the composites had fewer oxygen-containing functional groups, ensuring thermal stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Sovann Khan, Valeriia Poliukhova, Nomin Tamir, Jaehyun Park, Norihiro Suzuki, Chiaki Terashima, Ken-Ichi Katsumata, So-Hye Cho
Summary: This work demonstrates that photodeposition of Rh species on ZnO-ZnS heterostructure (ZnO/ZnS) can enhance their photocatalytic activity and secure their stability. As little as 0.02 at.% of Rh photodeposition can dramatically increase the activity and reduce self-corrosion of ZnO/ZnS. The optimal catalyst achieved an average H-2 production rate of 5.31 mmol(-1) g(-1) h(-1) and a maximum quantum efficiency of 22.9% at 365 nm.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Jianping Chen, Bin Liu, Hang Cai, Shude Liu, Yusuke Yamauchi, Seong Chan Jun
Summary: This study develops a covalently interlayer-confined organic-inorganic hybrid for improving the reaction kinetics of supercapacitors. The covalent assembly facilitates cross-layer electron transfer, increases active sites, and enhances the specific capacitance and rate capability of the hybrid material.
Article
Chemistry, Multidisciplinary
Nagy L. Torad, Yuta Tsuji, Azhar Alowasheeir, Masako Momotake, Kazuki Okazawa, Kazunari Yoshizawa, Michio Matsumoto, Masafumi Yamato, Yusuke Yamauchi, Miharu Eguchi
Summary: To increase chemical reaction rates, general solutions include increasing the concentration/temperature and introducing catalysts. In this study, the rate constant of an electrophilic metal coordination reaction is accelerated 23-fold on the surface of layered aluminosilicate (LAS), where the reaction substrate (ligand molecule) induces dielectric polarization owing to the polar and anionic surface. This unique method to accelerate the chemical reaction is expected to expand the range of utilization of LASs, which are chemically inert, abundant, and environmentally friendly. The concept is also applicable to other metal oxides which have polar surfaces, which will be useful for various chemical reactions in the future.
Article
Environmental Sciences
Dylan Shun Izuma, Norihiro Suzuki, Tomonori Suzuki, Haruka Motomura, Shiro Ando, Akira Fujishima, Katsuya Teshima, Chiaki Terashima
Summary: This article introduces a TiO2-coated net with photocatalytic antibacterial properties that can purify water in developing countries. By modifying the TiO2 particles, a highly water-durable photocatalyst coating was prepared. The results showed that the coated net effectively eliminated E. coli from water, reducing the risk of infectious diseases.
Article
Chemistry, Physical
Dmitry Kogolev, Oleg Semyonov, Nadezhda Metalnikova, Maxim Fatkullin, Raul D. D. Rodriguez, Petr Slepicka, Yusuke Yamauchi, Olga Guselnikova, Rabah Boukherroub, Pavel S. S. Postnikov
Summary: We propose utilizing laser-assisted carbonization of surface-grown UiO-66 to diversify the upcycling of waste PET into materials with enhanced photothermal properties. A solvo-thermal procedure was used to form a homogeneous UiO-66 layer on recycled PET sheets. Treatment with a 405 nm laser system enabled the formation of a carbonaceous layer with improved electrical conductivity and photothermal properties due to the presence of zirconium carbide and graphene. This approach presents new possibilities for the application of upcycled PET-based materials.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Mohammed G. Kotp, Nagy L. Torad, Johann Luder, Ahmed A. M. El-Amir, Watcharop Chaikittisilp, Yusuke Yamauchi, Ahmed F. M. EL-Mahdy
Summary: In this study, two novel phenazine-based CMPs, TPT-QP CMPs and Py-QP CMPs, were successfully synthesized through the Suzuki coupling condensation reaction. These CMPs have high surface areas and good thermal stabilities. TPT-QP CMPs, in particular, have abundant hydrogen-bonding sites and demonstrate high sensitivity and selectivity in detecting sub-ppm levels of volatile acidic hydrocarbons. Additionally, a quartz crystal microbalance (QCM) sensor based on TPT-QP CMPs was fabricated for the first time, showing excellent performance in detecting trace amounts of formaldehyde.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Ruijing Xin, Minjun Kim, Ping Cheng, Aditya Ashok, Silvia Chowdhury, Teahoon Park, Azhar Alowasheeir, Md Shahriar Hossain, Jing Tang, Jin Woo Yi, Yusuke Yamauchi, Yusuf Valentino Kaneti, Jongbeom Na
Summary: Hierarchically porous bimetallic zeolitic imidazolate framework (ZIF) particles (etched Zn33Co67-ZIF) were designed and prepared through an ethylene glycol-assisted aqueous etching method, which effectively increased their pore size and surface area. After thermal treatment, the etched Zn33Co67-ZIF particles transformed into cobalt and nitrogen co-doped hierarchically porous carbon (etched Zn33Co67-C), which exhibited increased mesoporosity and specific capacitance compared to the unetched one. The presented ethylene glycol-assisted aqueous etching process provides a facile template-free strategy for improving the energy storage performance of MOFs and their corresponding porous carbons.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Norihiro Suzuki, Yuta Fujii, Naoya Ishida, Takeshi Kondo, Makoto Yuasa, Chiaki Terashima, Akira Fujishima
Summary: Porosity was introduced into a EuTiO3 thin film to create a crack-free film with nanopores. The film had a crystallized framework core and an amorphous shell, forming a core-shell structure. The amorphous shell contributed to the ferromagnetism through improved crystal field splitting and enhanced interaction between neighboring Eu2+ ions.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Lulu Jia, Fang Xian, Yoshiyuki Sugahara, Nobuyuki Sakai, Emmanuel Picheau, Hairong Xue, Yusuke Yamauchi, Takayoshi Sasaki, Renzhi Ma
Summary: Ultrathin nanosheets of Ni-, Co-, and Fe-based (oxy)hydroxides show promising catalytic activity for OER in water electrolysis under alkaline conditions. Fe may play a crucial role in the catalytic process of Ni- or Co-based catalysts, but effective methods for preparing and studying pure Fe hydroxide nanosheets are lacking.
CHEMISTRY OF MATERIALS
(2023)
Review
Chemistry, Physical
Lijin Huang, Juan Yang, Yingji Zhao, Hirokatsu Miyata, Minsu Han, Qin Shuai, Yusuke Yamauchi
Summary: To address the insolubility and poor processability of powder covalent organic frameworks (COFs), monolithic COFs with hierarchical structures have been constructed as a feasible and effective solution. This review provides a comprehensive summary of the recent advances in the synthesis of monolithic COF materials and their application in environmental remediation, as well as discussing current challenges and future perspectives.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiaohong Liu, Xingtao Xu, Xiaoxu Xuan, Wei Xia, Guilin Feng, Shuaihua Zhang, Zhen-Guo Wu, Benhe Zhong, Xiaodong Guo, Keyu Xie, Yusuke Yamauchi
Summary: In this study, a yolk-shell nanoarchitecture of NASICON-structured NTP/C materials (ys-NTP@C) was developed using a metal-organic framework@ covalent organic polymer (MOF@COP) as a sacrificial template and space-confined nanoreactor. ys-NTP@C exhibited good CDI performance with high salt adsorption capacities (SACs) and good cycling stability. This study provides a new synthetic paradigm for preparing yolk-shell structured materials and highlights the potential use of yolk-shell nanoarchitectures for electrochemical desalination.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Chemical
Zeqiu Chen, Xingtao Xu, Kai Wang, Dong Jiang, Fanyue Meng, Ting Lu, Yusuke Yamauchi, Likun Pan
Summary: In this study, a hybrid material of pyrazine-based pi-conjugated organic molecule, hexaazatrinaphthalene (HATN), and MXene was reported. The combination of MXene as a conductive substrate and HATN as an electroactive material resulted in a unique 3D structure with increased ion transport channels, leading to enhanced charge transfer and ion diffusion rates. The obtained HATN/MXene composite exhibited a high desalination capacity of 57.5 mg g(-1), a fast desalination rate of 13.2 mg g(-1) min(-1), and good long-term stability. This work provides valuable insights for the design and application of organic molecules in the field of capacitive deionization.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Mandeep K. Chahal, Masato Sumita, Jan Labuta, Daniel T. Payne, Jonathan P. Hill, Yusuke Yamauchi, Takashi Nakanishi, Takeshi Tanaka, Hiromichi Kataura, Kenji Koga, Hiroyuki Miyamura, Yoshihiro Kon, Dachao Hong, Shinsuke Ishihara
Summary: This study reports a chemiresistive sensor array composed of modified hydroxylamine salts and single-walled carbon nanotubes that can selectively detect formaldehyde vapor. By screening different types of salts, an ideal sensor array has been identified that can clearly discriminate trace amounts of formaldehyde from acetaldehyde. This system offers portable and reliable chemical sensors for advanced environmental monitoring and healthcare applications.
Article
Chemistry, Multidisciplinary
Vasilios Karanikolas, Takuya Iwasaki, Joel Henzie, Naoki Ikeda, Yusuke Yamauchi, Yutaka Wakayama, Takashi Kuroda, Kenji Watanabe, Takashi Taniguchi
Summary: High-quality emission centers in two-dimensional materials, such as carbon-enriched hexagonal boron nitride (hBN:C) layers, are promising for future photonic and optoelectronic applications. By placing hBN:C layers on Ag triangle nanoparticles (NPs), the decay time of atom-like color-center (CC) defects is accelerated to 46 ps from their bulk value of 350 ps, due to efficient excitation of plasmon modes. Simulations suggest higher Purcell values, and analysis reveals the influence of NP thickness on the Purcell factor of CCs. The ultrafast operation of CCs in hBN:C layers enables their use in demanding applications like single-photon emitters and quantum devices.
Article
Multidisciplinary Sciences
Norihiro Suzuki, Rumi Katsukawa, Naoya Ishida, Yuta Shiroma, Tsugumi Kagaya, Takeshi Kondo, Makoto Yuasa, Chiaki Terashima, Akira Fujishima
Summary: In this study, we propose a two-step pervaporation system using a high-silica CHA membrane for the extraction and condensation of formic acid produced by the electroreduction of CO2. The separation of electrolyte ions and water molecules is achieved through a desalination process followed by a dehydration process.
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)
