Article
Polymer Science
Hang Guo, Zhilong Hong, Dongmei Huang, Erjie Yang, Zhuangzhuang Zhu, Chenhao Zhao, Yun Dong, Bangjiao Ye, Hongjun Zhang, Liangbin Li
Summary: The structure-property relationship of the interlamellar amorphous phase in semicrystalline polymers has been a fundamental yet controversial topic in polymer physics. This study simplifies the mechanical coupling between the two phases and quantitatively characterizes the evolution of the amorphous structure and its connection to the mechanical behavior using advanced techniques.
Article
Polymer Science
Hamdy F. M. Mohamed, Esam E. E. Abdel-Hady, Wael M. M. Mohammed
Summary: A casting technique was used to prepare PVA blend polymers with different concentrations of Nylon-6,6 to control their ionic conductivity. The thermal stability of the blends was found to be between that of pure Nylon-6,6 and pure PVA. The dielectric properties of the blends followed Jonscher's universal power law, and the ionic conductivity decreased with increasing Nylon-6,6 concentration.
Article
Chemistry, Multidisciplinary
Xiaobing Han, Tao Chen, Yuan Zhao, Jie Gao, Yanan Sang, Houhua Xiong, Zhiyuan Chen
Summary: This study quantitatively characterized the microstructure of graphene/polyethylene composites and investigated the effects of different parameters on the properties of the composites. The results showed that the relative free volume fraction and interfacial interaction intensity significantly influenced the properties of the composites.
Article
Chemistry, Physical
Ke Li, Egor Kashkarov, Hailiang Ma, Ping Fan, Qiaoli Zhang, Peng Zhang, Jilong Zhang, Zhaohui Wu, Larissa Wahl, Roman Laptev, Andrey Lider, Nahum Travitzky, Daqing Yuan
Summary: In this study, microstructural analysis of preceramic paper-derived SiCf/SiC composites fabricated by spark plasma sintering was conducted. The results showed that longer sintering time increases the proportion of 6H-SiC composition, while the increase in sintering temperature leads to partial transition of 4H-SiC to 6H-SiC during the sintering process.
Article
Chemistry, Physical
S. A. Abdelsalam, O. M. Hemeda, T. Sharshar, A. M. A. Henaish, M. M. Ali
Summary: The Casting method is used to produce nano-composite polymeric thin films with varied aluminum content. The morphology, dielectric properties, and microstructure changes of the thin films are investigated using various techniques.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Polymer Science
Nabil Hayeemasae, Abdulhakim Masa, Nadras Othman, Indra Surya
Summary: Natural rubber (NR) is incompatible with hydrophilic additives, but the addition of silane coupling agents greatly improves the properties of NR/HNT composites, including modulus, tensile strength, and tear strength. Among the four different silanes tested, AEAPTMS is found to be the most viable choice. The strain-induced crystallization (SIC) of the composites is substantially aided by the corresponding silanes.
Article
Materials Science, Multidisciplinary
Torsten E. M. Staab, Frank Lotter, Uwe Muhle, Mohamed Elsayed, Danny Petschke, Thomas Schubert, Alaa M. Ibrahim, Reinhard Krause-Rehberg, Bernd Kieback
Summary: The mechanical properties of Aluminium-copper alloys of the 2xxx type are achieved through the formation of copper-rich precipitates during hardening. The size, distribution, and crystal structure of these precipitates determine the final strength of the alloys. The addition of trace elements, such as In, Sn, and Pb, significantly affects the decomposition behavior of the copper atoms during ageing, with In showing a retarding effect on clustering compared to Sn additions and Pb showing nearly no effect.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Huijuan Wu, Suiting Ning, Xiangbin Chen, Tian Yu, Tingdong Zhang, Xiang Qu, Ning Qi, Zhiquan Chen
Summary: Multiple strategies were employed to suppress the lattice thermal conductivity in beta-Ga2O3, including the introduction of point defects, grain boundaries, secondary phases, and pores. As a result, the as-sintered beta-Ga2O3 exhibited an extremely low thermal conductivity, attributed to the presence of micro-pores, vacancies, and a high porosity.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Vanessa Rosciardi, Piero Baglioni
Summary: This study investigates the role of amylose and amylopectin in the formation of cryogels based on PVA and starch. The composition of PVA, amylose, and amylopectin affects the properties and formation of the final polymer blend and cryogel. A simple parameter, gel fraction (G%), can be used to predict cryogel formation for any PVA/amylose/amylopectin mixing ratio, regardless of the starch origin.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Badri Narayanan Narasimhan, Alexander W. Dixon, Bradley Mansel, Andrew Taberner, Jitendra Mata, Jenny Malmstrom
Summary: This study investigates hydrogels made with semi-interpenetrating networks of oligomerized polyphenol tannic acid and poly(acrylamide). The presence of micron-sized hydrogen bonded clusters in the hydrogels and the breaking of these clusters above a critical solution temperature are observed using small angle X-ray scattering and small and ultra-small angle neutron scattering. Polarized optical microscopy shows enhanced anisotropy for gels with oligomerized tannic acid, and rheological studies reveal self-healing behavior of the gels. The findings from this study contribute to the rational design of hydrogels for biomedical applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Polymer Science
Borys M. Gorelov, Oleksandr Mischanchuk, Nadia Sigareva, Sergey Shulga, Alla M. Gorb, Oleksiy Polovina, Volodymyr O. Yukhymchuk
Summary: Multilayered graphene nanoplatelets (MLGs) were prepared using an electrochemical technique from thermally expanded graphite flakes. The morphological characterization and studies on DGEBA-epoxy-based nanocomposites filled with MLGs showed enhancements in compression strength, Young's modulus, thermal stability, and dielectric properties at varying loadings. Discussions on the physical mechanisms of MLG-epoxy interactions underlying the observed effects were also included in the study.
Article
Polymer Science
Indra Surya, Kamaruddin Waesateh, Abdulhakim Masa, Nabil Hayeemasae
Summary: The study focused on modifying natural rubber into Epoxidized Natural Rubber (ENR) to improve compatibility with Halloysite Nanotubes (HNT). Acid-treated HNT filler showed enhanced performance in the composites, including improved modulus, tensile strength, and tear strength.
Article
Biochemical Research Methods
Tomas Rosen, Ruifu Wang, HongRui He, Chengbo Zhan, Shirish Chodankar, Benjamin S. Hsiao
Summary: This study presents a flow-focusing mixing device for in situ nanostructural characterization using scanning-SAXS, allowing for accurate analysis of mixing processes over time and providing insights into the dynamics of nanocellulosic materials formation.
Article
Polymer Science
Somia Awad, Ali H. Alomari, Esam E. Abdel-Hady, Mai F. M. Hamam
Summary: The study successfully prepared a proton exchange membrane based on PVA/SiO2, and investigated the physical, chemical, and electrochemical properties. It was found that ion exchange capacity and proton conductivity improved with increasing degree of grafting, while positron annihilation lifetime experiments revealed changes in free volume hole size with accumulation of styrene graft content. The results of the nanoscopic properties from PAL experiments were successfully linked to the chemical and physical properties, demonstrating the potential of the prepared PVA/SiO2-grafted sulfonated styrene for fuel cell applications as an alternative to Nafion.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Energy & Fuels
J. Jennings, D. J. Growney, H. Brice, O. O. Mykhaylyk, S. P. Armes
Summary: Asphaltenes, complex carbon-rich molecules found in crude oil, have a strong tendency to aggregate and phase separate. This causes issues in crude oil extraction, refining, and application. Understanding the morphology and mechanisms of asphaltene aggregation and designing stabilizers to prevent phase separation have been the focus of research. Imaging techniques and light scattering provide limited structural information, while small-angle scattering and X-ray diffraction offer a wealth of information about asphaltene structure.
Article
Materials Science, Ceramics
Santosh Kumar Gupta, Brindaban Modak, Mohit Tyagi, Pampa Modak, Kathi Sudarshan
Summary: In this study, the speciation of actinide (An) and lanthanide (Ln) in technologically important ceramics was investigated using various spectroscopic techniques and density functional theory (DFT). The distribution and behavior differences of uranium (U) and cerium (Ce) in BaHfO3 (BHO) were revealed, providing valuable insights for potential applications such as nuclear waste host and afterglow phosphors.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Inorganic & Nuclear
Jyoti Prakash, Divya Nechiyil, Kawsar Ali, Sandeep K. Sharma, Anusree Dey, Sheetal Uppal, Ashok Arya
Summary: In this study, undoped and La/Ce/Zr doped BiVO4 photo anodes were fabricated using the spray pyrolysis coating technique. The Zr-doped BiVO4 photo anode exhibited remarkable sensitivity for glucose sensing due to the reduced band gap and improved photoelectrochemical efficiency.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Annu Balhara, Santosh K. Gupta, G. D. Patra, Brindaban Modak, J. Prakash, K. Sudarshan, M. Mohapatra
Summary: A co-doping strategy with hexavalent uranium ions was used to stabilize divalent europium ions in the Li2B4O7 host at low hydrogen flux, providing a possibility for luminescent materials in technological applications like phosphor-converted light emitting diodes (pc-LEDs).
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Sandeep K. Sharma, Swati Mehta, Pranav Utpalla, Manjulata Sahu, Jitendra Bahadur
Summary: The modifications in the pore network of evaporation-induced self-assembled microspheres of silica nanoparticles with varying loadings of polyethyleneimine (PEI) were investigated using positron annihilation lifetime spectroscopy (PALS) and small-angle X-ray scattering (SAXS). The dynamics of the loaded PEI in the pore network were studied using temperature-dependent broadband dielectric spectroscopy. The results showed that the pore size and volume increased with increasing PEI loading, followed by a decrease due to the modification in the clustering behavior of nanoparticles and filling of pores with excess PEI.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Ayan Maity, Saideep Singh, Swati Mehta, Tristan G. A. Youngs, Jitendra Bahadur, Vivek Polshettiwar
Summary: Understanding the molecular mechanism of gas adsorption in interconnected porous carbon is crucial for designing engineered materials with maximum gas storage capacity and kinetics for carbon capture applications. The synthesis of novel macro-meso-microporous carbon (M3C) nanospheres with interconnected pore structures allowed for fast CO2 adsorption and high capture capacity. In situ small-angle neutron scattering (SANS) revealed that the macro- and mesopores of M3C facilitate fast diffusion of CO2 molecules, leading to densification and fast diffusion in the macro- and mesopores until complete filling.
Article
Chemistry, Multidisciplinary
Jyoti Prakash, Pandugula Thirmaleshwar Rao, Rohan Rohilla, Divya Nechiyil, Manmeet Kaur, Kailasa S. Ganapathi, Anil Krishna Debnath, Amit Kaushal, Jitendra Bahadur, Kinshuk Dasgupta
Summary: In order to provide early warning against gas leakage accidents, a thin paper-like carbon nanotube (CNT) aerogel gas sensor was fabricated. The sensor showed excellent sensitivity for toxic gases like NO2 and methanol in the concentration range of 1-100 ppm, with a remarkable limit of detection of 90 ppb. Even after bending and crumpling, the sensor consistently responded to toxic gases. Through annealing at different temperatures, the sensing characteristics of the CNT aerogel film can be switched due to the change in the semiconductor nature of the film.
Article
Chemistry, Physical
Jaideep Mor, Pranav Utpalla, Ravi Kumar, Jitendra Bahadur, Sandeep Kumar Sharma
Summary: ZIF-L is transformed to ZIF-8 through a topotactic phase transformation driven by the removal of hydrogen-bonded linker molecules. Crystalline particles form within the first minute, and leaf-like structures complete their growth within 10 minutes. During the transformation, ZIF-L particles are cleaved and transformed into 3D ZIF-8 nanocrystals.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Swati Mehta, Jitendra Bahadur, Debasis Sen
Summary: The jamming of colloidal particles in dried droplets is influenced by various parameters, and substrate wettability plays a crucial role. Evaporating droplets on wettable surfaces can enhance the velocity of colloidal particles during drying. This study investigated whether the jamming of colloidal particles would exhibit increased velocity during the evaporation of droplets on superhydrophobic surfaces and air-suspended spray colloidal droplets. The results showed that the transition from ordered to random arrangement of colloidal particles is due to the increase in particle velocity during evaporation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Multidisciplinary
Anand Kumar Tiwari, Debasis Sen, Avik Das, Jitendra Bahadur
Summary: This study demonstrates the evidence of size stratification of nanoparticles in far-from-equilibrium configurations by using small-angle X-ray scattering and particle packing simulation, revealing the concentration of larger particles at the outer shell and the residence of smaller particles in the core region in assembled microgranules.
Article
Engineering, Electrical & Electronic
Reshmi Thekke Parayil, Santosh K. Gupta, Rohan Rohilla, Jyoti Prakash, Kathi Sudarshan, Manoj Mohapatra
Summary: Defect engineering is an efficient strategy to introduce different functionalities in materials, and this study synthesized Y2Zr2O7 by the gel combustion method and engineered defects through annealing. The resulting material exhibited dual-band bluish-green emission, with the color tunable from blue to green in the nano to bulk range. The bulk samples showed higher photoluminescence quantum yield and reduced surface defects compared to the nano samples. The materials also demonstrated potential as gas sensors for detecting VOCs, with excellent sensitivity and response and recovery time towards benzene.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Koushik Bhandari, V. Grover, P. Kalita, K. Sudarshan, B. Modak, Saurabh K. Sharma, P. K. Kulriya
Summary: This study investigates the radiation response of YAG and Nd-YAG materials under varying irradiation doses. The results show a decrease in crystallinity with increasing dose, with Nd-YAG being more severely damaged. The formation of oxygen vacancies in Nd-YAG contributes to radiation damage. Comparison with other materials reveals a relatively poorer radiation response of YAG.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Debasis Sen, Avik Das, Ashwani Kumar, Jitendra Bahadur, Rajesh K. Chaurasia, Arshad Khan, Rajib Ganguly
Summary: In this study, the role of amphiphilic interactions between hydrophilic silica nanoparticles and the Pluronic F127 tri-block co-polymer in the formation of a stable Pickering emulsion was investigated using small-angle X-ray scattering. Highly organized silica nanoparticles at the oil-water interface were observed, which deviated from the standard raspberry structural model. A plausible formation mechanism for the observed high on-surface silica correlation in the Pickering emulsion was proposed based on the combined interactions of the block co-polymer and silica particles.
Article
Chemistry, Inorganic & Nuclear
Liladhar B. Kumbhare, Anu Prathap M. Udayan, Hardik Singla, Shilpa N. Sawant, Priyanka Ruz, Amey Wadawale, Jitendra Bahadur
Summary: A series of 2-(3,5-dimethylpyrazol-1-yl)phenyl substituted selenoether complexes of palladium were synthesized and their molecular structures and aggregation were analyzed. These complexes were converted to capping free palladium selenide nanoparticles and evaluated for electrocatalytic activity in alkaline medium.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Swati Mehta, Jitendra Bahadur, Debasis Sen, Divya Nechiyil, H. Bhatt, Naveen Kumar, Jyoti Prakash
Summary: This study presents a simple, cost-effective, and eco-friendly approach for producing polyethyleneimine (PEI)-assisted silver nanoparticle-supported silica microspheres. The microspheres exhibit good sensing properties and high sensitivity in detecting hydrogen peroxide and rhodamine 6G, demonstrating their potential use in biomedical and sensing technologies.
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)