Article
Chemistry, Multidisciplinary
Jurgen Schoiber, Christian Koczwara, Simon Rumswinkel, Lawrence Whitmore, Christian Prehal, Florian Putz, Michael S. Elsaesser, Oskar Paris, Nicola Husing
Summary: The Sol-gel processing combined with soft templating and gelation-induced phase separation is found to be sensitive to the precursor sol composition. By selecting different reaction solvents and catalyst proportions, similar monolithic structures can be obtained. Homogeneous incorporation of TiO2 into the carbon structure leads to composite materials with regularly arranged mesopores, large surface areas, and cellular macroporosity.
Article
Energy & Fuels
Hafiz Muhammad Tahir Farid, Soumaya Gouadria, S. M. Al-Moayid, Mohd Zahid Ansari, Elhosiny Ali
Summary: In this study, CuCo2O4 and reduced graphene oxide (rGO) were mixed using a clean hydrothermal strategy to synthesize CuCo2O4/rGO nanocomposites with excellent electrochemical performance. The synthesized electrocatalysts were characterized by microscopic and spectroscopic techniques, and their electrocatalytic behavior was analyzed using galvanostatic charge-discharge techniques, cyclic voltammetry, electro-chemical impedance spectroscopy, and chronoamperometry. The electrochemical analysis showed that the incorporation of rGO increases the discharge duration interval, enhances the specific capacitance (Cs), and improves the overall stable behavior of the CuCo2O4 electrocatalytic materials. The nanocomposite exhibited high capacitance retention and stability over multiple cycles and hours. Adjustments to the electrical and structural arrangement, morphology, or doping technique improved the capacitive activity of the produced electrode.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Electrical & Electronic
Yaoyao Pan, Yuan Yang, Fang Rong, Xiaoyu Huang, Qiang Zhang, Zhili Xu, Xiuhua Wang
Summary: One-dimensional MnO2@C@Ni(OH)(2) core-shell nanowires were successfully synthesized and showed high capacitance and cycling stability as supercapacitor electrode material. The asymmetric supercapacitor composed of MnO2@C@Ni(OH)(2) as positive electrode and activated carbon as negative electrode exhibited high energy density.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Chemical
Jiacong Wu, Juan Han, Yanli Mao, Lei Wang, Yi Wang, Yuanyuan Li, Yun Wang
Summary: Metal-organic frameworks (MOFs) with adjustable mesopores were prepared through bionic mineralization using protein as a template. The study found that UIO-66 with a pore size of 6.46 nm exhibited the highest loading capacities for the investigated enzymes, and the immobilized enzymes showed improved stability and substrate affinity compared to the free enzymes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Peng Sun, Zhanlin Wang, Boqiang Zhang, Fei Tao, Kaizhen Zhu, Tao Zhang, Tianpei Feng, Chen Chen, Haohao Shen
Summary: In this study, Ni3S2 nanosheets dual-doped with manganese and cobalt elements were synthesized and applied as electrodes for high-performance electrochemical Supercapacitors (SCs). A plausible mechanism for the formation of the dual-doped Ni3S2 nanosheets is proposed. The electrodes based on these nanosheets exhibit high specific capacitance and excellent cycling stability at high current densities.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Review
Chemistry, Multidisciplinary
Yapeng Wang, Zhaofeng Chen, Yeshang Lu, Lixia Yang, Ting Xu, Haisheng Wu, Jianxun Zhang, Lihua He
Summary: This review presents the research progress in toughening modification of melamine foam, analyzing the principle, merits, and demerits of different modification methods. It also summarizes the achievements of nanotechnology modification of melamine foam derivatives. Future prospects for their application are discussed, considering the current status and challenges in their modification processes.
NANOTECHNOLOGY REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Lijun Xu, Lu Yang, Aihua Liu
Summary: This study reported a one-pot synthesis method for Mn3O4 nanorods at room temperature. The nanorods exhibited good stability in aqueous solution and rapid oxidation of H2O2. By developing a colorimetric method, sensitive detection of H2O2 and glucose was achieved, and practical application in analyzing glucose in human serum samples demonstrated its utility.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Energy & Fuels
Apriwandi Apriwandi, Erman Taer, Rakhmawati Farma, Rahmondia Nanda Setiadi, Erwin Amiruddin
Summary: This research successfully converted banana leaves biomass into porous carbon without using complicated techniques, such as hard/salt-templates or heteroatoms-doping. The obtained activated carbon exhibited a 3D porous structure with enhanced specific surface area and mesoporosity, leading to the production of high-capacity symmetric supercapacitors. This study provided a feasible approach to obtain hierarchical activated porous carbon as an electrode material for energy storage devices.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Multidisciplinary
Ghulam Mustafa, Gohar Mehboob, Said Nasir Khisro, Muhammad Javed, Xinman Chen, M. Shafiq Ahmed, J. M. Ashfaq, G. Asghar, Shahnwaz Hussain, Amin Ur Rashid, Ghazanfar Mehboob
Summary: A simplified sol-gel method was used to prepare manganese oxide nanocrystals with a nanoporous structure, showing excellent specific capacitance and capacitive behavior for energy storage applications. The electrode materials exhibited a high specific capacitance of 391 F/g and 369 F/g at different conditions, suggesting their suitability for energy storage applications due to their high porosity.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jiaqi Wang, Yuancong Luo, Lei Ling, Xue Wang, Shicong Cui, Zhen Li, Zheng Jiao, Lingli Cheng
Summary: A sandwich-like NiCo-LDH/rGO composite is designed and prepared to address the issues of agglomeration, conductivity, and volume changes in LDH materials. The novel structure of NiCo-LDH/rGO inhibits agglomeration, while the interlaminar voids and work function difference enhance the electrical performance. The electrochemical tests show that the NiCo-LDH/rGO composite exhibits high specific capacity and excellent cycling stability. The assembled flexible capacitor shows a high energy density and outstanding cycle life.
Article
Chemistry, Inorganic & Nuclear
Youliang Cheng, Ying Wei, Changqing Fang, Jing Chen, Weina Zhao
Summary: CQDs/Ag NPs composites were successfully synthesized via the in-situ method assisted by UV light irradiation, with a diameter ranging from 20-28 nm and an expanded absorption band for visible light up to 450 nm. The composites exhibited better antibacterial properties compared to silver nitrate and solo Ag NPs solutions.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Applied
Rui Sun, Yao Sun, Wei Wang
Summary: This study presents a facile method for preparing monodispersed ultra-large mesopore mesoporous silica nanoparticles (ULP-MSNs) with controllable mesopore sizes and particle sizes. The method involves using ammonium chloride (NH4Cl) assisted-hydrothermal (AAH) process to enlarge the small mesopores of conventional MSNs from about 2 nm to over 16 nm. The introduction of ethanol and NH4Cl in the synthesis mixture, as well as the hydrothermal conditions, play important roles in enlarging the mesopores through AAH process. ULP-MSNs with variable mesopore sizes and controllable particle sizes can be easily produced using this method, which is believed to open up new possibilities for the applications of ULP-MSNs.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Applied
Yichen Zhou, Ying Zhang, Lu Zhang, Jianhao Qiu, Jianfeng Yao
Summary: The delicate design of photocatalyst monoliths is crucial for practical applications. In this study, a in-situ synthesis method was developed to prepare ZnIn2S4/cellulose foam, which showed promising photocatalytic reduction of Cr(VI) under visible light. The tightly bound ZnIn2S4 nanosheets and cellulose prevented the nanosheets from stacking in multiple layers. This work could inspire the development of floating cellulose-based photocatalysts via in-situ synthesis.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Physical
Mohd Shoeb, Mohammad Mobin, Sayed Mohammad Adnan, Ifra Ilyas Ansari, Mohammad Naved Khan, Sadaf Zaidi, M. Yusuf Ansari
Summary: Developing a simple, affordable, and scalable process for fabricating an energy storage device is still a challenge in the modern era. In this study, a Graphene-Silver/Polyindole nanocomposite was synthesized as electrode material for high-performance supercapacitors. The results showed high specific capacity, energy density, and capacitance stability, making it a promising candidate for excellent energy storage.
SURFACES AND INTERFACES
(2022)
Article
Green & Sustainable Science & Technology
H. Nabipour, X. Wang, L. Song, Y. Hu
Summary: This study reports the production of multifunctional carbon foams from biomass, which have exceptional carbonization ability and can serve as CO2 absorbents. A bio-based epoxy thermoset was prepared through curing, exhibiting good stability and high carbonization effect. This research is of great significance for environmental protection and sustainable development.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Chemistry, Physical
Alexander Kukay, Ritu Sahore, Anand Parejiya, W. Blake Hawley, Jianlin Li, David L. Wood
Summary: The production of lithium-ion batteries (LIB) can benefit economically and environmentally from aqueous processing, although issues still exist with ultra-thick cathodes. An investigation into mitigating corrosion by adjusting the pH of the dispersion with phosphoric acid has been conducted, resulting in a technique for producing aqueous processed cathodes with improved surface cracking and high-rate discharge capacity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Electrochemistry
Zhijia Du, X. Chelsea Chen, Ritu Sahore, Xianyang Wu, Jianlin Li, Nancy J. Dudney
Summary: The development of a safe electrolyte is crucial for improving energy density in next generation lithium batteries. The study found that a hybrid electrolyte made of polymer/ceramic/non-flammable plasticizer can enhance both ionic conductivity and mechanical properties, leading to longer cycle life and higher capacity retention in battery tests. This promising approach shows potential for high energy density, high voltage lithium batteries.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Ritu Sahore, Zhijia Du, Xi Chelsea Chen, W. Blake Hawley, Andrew S. Westover, Nancy J. Dudney
Summary: Polymer electrolytes are important materials for solid-state batteries, and testing under practical cell conditions is essential for faster and more reliable evaluation of their performance.
ACS ENERGY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Jan Kosco, Soranyel Gonzalez-Carrero, Calvyn T. Howells, Weimin Zhang, Maximilian Moser, Rajendar Sheelamanthula, Lingyun Zhao, Benjamin Willner, Tania C. Hidalgo, Hendrik Faber, Balaji Purushothaman, Michael Sachs, Hyojung Cha, Rachid Sougrat, Thomas D. Anthopoulos, Sahika Inal, James R. Durrant, Iain McCulloch
Summary: It has been found that incorporating conjugated polymers with ethylene glycol side chains into organic semiconductor nanoparticles can significantly enhance hydrogen-evolution efficiency. Glycolation promotes charge generation, reduces charge recombination, and ultimately boosts hydrogen-evolution rates in the nanoparticles.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Georgios Polizos, Jaswinder Sharma, Charl J. Jafta, Nitin Muralidharan, Gabriel M. Veith, Jong K. Keum, Alexander Kukay, Ritu Sahore, David L. Wood
Summary: Electrospun Al-LLZO scaffold structures were synthesized and used as additives in a LiNi0.6Mn0.2Co0.2O2 composite cathode. The morphology of the Al-LLZO scaffold was found to affect the long-term cycling stability and rate performance of the cells, with uniformly dispersed fibers resulting in improved cathode electrolyte interface formation and cycling performance.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Ritu Sahore, Guang Yang, Xi Chelsea Chen, Wan-Yu Tsai, Jianlin Li, Nancy J. Dudney, Andrew Westover
Summary: The research team demonstrated a bilayer polymer electrolyte design for high-energy-density solid-state battery cathodes. One electrolyte layer provides dendritic resistance while the other ensures seamless contact with the cathode during cycling. This approach presents a new pattern for enabling high-energy-density cathodes.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sifei Zhuo, Gang Huang, Rachid Sougrat, Jing Guo, Nini Wei, Le Shi, Renyuan Li, Hanfeng Liang, Yusuf Shi, Qiuyu Zhang, Peng Wang, Husam N. Alshareef
Summary: Hierarchical nanocapsules containing Cu-doped MoS2 nanopetals enclosed in carbonaceous nanotubes have been developed for rechargeable magnesium batteries. These nanocapsules exhibit excellent energy storage performance and efficient electron/ion transfer channels.
Article
Chemistry, Physical
Changhao Liu, Robert L. Sacci, Ritu Sahore, Gabriel M. Veith, Nancy J. Dudney, X. Chelsea Chen
Summary: This study systematically investigates the processing of PAN based solid polymer electrolytes and its effects on the morphology, ion transport, solvation structure, Li and oxidative stability. The drying conditions are found to greatly affect the ionic conductivity and oxidative stability of the electrolyte.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Ritu Sahore, Marissa Wood, Alexander Kukay, Zhijia Du, Kelsey M. Livingston, David L. Wood, Jianlin Li
Summary: Water-based processing for lithium-ion battery electrodes offers cost and environmental advantages. In this study, four different water-based binder combinations were tested for Ni-rich LiNi0.8Mn0.1Co0.1O2 (NMC811)-based cathodes, and their long-term electrochemical performance in practical pouch cells was evaluated. The results showed that two of the water-based cathode formulations performed comparably to the baseline after 1000 cycles.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Alec S. Ho, Andrew S. Westover, Katie Browning, Jacqueline A. Maslyn, Dilworth Y. Parkinson, Ritu Sahore, Nancy Dudney, Nitash P. Balsara
Summary: A comparison was made between lithium metal films produced via rolling and thermal evaporation using synchrotron hard X-ray microtomography. The study found that the evaporated lithium metal films had a much lower impurity concentration compared to the rolled lithium metal films. The analysis of the film interfaces further emphasized the importance of interface engineering in producing high-quality lithium metal batteries.
ACS ENERGY LETTERS
(2022)
Article
Biotechnology & Applied Microbiology
Xiongjie Zheng, Jianing Mi, Aparna Balakrishna, Kit Xi Liew, Abdugaffor Ablazov, Rachid Sougrat, Salim Al-Babili
Summary: This study reveals the enzymatic activity of GjCCD4a in plants and establishes an efficient biotechnological platform for the production of crocins in callus and tobacco leaves.
PLANT BIOTECHNOLOGY JOURNAL
(2022)
Article
Chemistry, Physical
Wan-Yu Tsai, Xi Chelsea Chen, Sergiy Kalnaus, Ritu Sahore, Zhijia Du, Andrew S. Westover
Summary: This study investigates the evolution of lithium morphology in a semi-solid-state gel composite electrolyte, finding that severe surface pitting occurs early in the cycling process, leading to roughening of the lithium surface and dendrite growth. The study suggests that strategies to control lithium morphology and prevent dendrite growth in a gel composite electrolyte should be similar to those used for liquid electrolytes.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Ritu Sahore, Beth L. L. Armstrong, Xiaomin Tang, Changhao Liu, Kyra Owensby, Sergiy Kalnaus, Xi Chelsea Chen
Summary: 3D-interconnected ceramic/polymer composite electrolytes show potential in combining the advantages of both ceramic and polymer electrolytes. This study systematically evaluates the role of ceramic scaffold architecture and polymer/ceramic interfaces on the electrochemical properties of such composite electrolytes. The findings suggest that the ionic conductivity of the ceramic scaffold is influenced by its porosity and tortuosity, while the interfacial impedance between the bulk composite and excess surface polymer layers dominates the overall impedance. Despite the impedance interfaces, an improved Li+ transference number is observed, leading to flatter overpotentials in lithium symmetric cell cycling.
ADVANCED ENERGY MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Kyra D. Owensby, Ritu Sahore, Wan-Yu Tsai, X. Chelsea Chen
Summary: Lithium metal anode offers high theoretical energy density, but stable lithium plating and stripping remain challenging. This perspective examines lithium morphology in solid and gel polymer electrolytes and compares it with liquid electrolytes. Current strategies and limitations to control lithium morphology are discussed.
MATERIALS ADVANCES
(2023)
Article
Nanoscience & Nanotechnology
Maria Di Vincenzo, Alberto Tiraferri, Valentina-Elena Musteata, Stefan Chisca, Rachid Sougrat, Li-Bo Huang, Suzana P. Nunes, Mihail Barboiu
Summary: Inspired by biological proteins, artificial water channels (AWCs) can enhance the performance of traditional desalination membranes, providing a more efficient method for selective water transport in seawater desalination. By incorporating AWCs in composite polyamide, these biomimetic membranes exhibit high water-to-salt permeability under high pressure, suitable for seawater desalination, with a rejection rate of 99.5% for NaCl or 91.4% for boron.
NATURE NANOTECHNOLOGY
(2021)
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)
