Article
Environmental Sciences
Thanh-Binh Nguyen, Thi-Bao-Chau Ho, Chin-Pao Huang, Chiu-Wen Chen, Shu-Ling Hsieh, Wen-Pei Tsai, Cheng-Di Dong
Summary: The study investigated the adsorption of tetracycline on high-density polyethylene particles and found that pH controls the surface charge of PE particles. Tetracycline adsorption onto PE particles was rapid, following the pseudo-second-order rate law. In addition to specific chemical interactions, polar forces played a significant role in controlling TC adsorption onto PE particles.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Physical
Denys Snigur, Maksym Fizer, Alexander Chebotarev, Olena Lukianova, Kateryna Bevziuk
Summary: In this study, the protolytic and spectrophotometric characteristics of Quinoline Yellow WS were investigated in detail, with ionization constants determined and distribution diagrams of the coexisting acid-base forms calculated. The effect of the solvent's dielectric permittivity on the molar absorptivity of the dye was also studied.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
T. Saito, T. Yokoi, A. Nakamura, K. Matsunaga
Summary: The study used first-principles calculations to reveal stable surface structures and charge states of hydroxyapatite, finding significant differences in surface stability in different chemical environments and calculating the isoelectric points of the surfaces. The results are consistent with experimental data, providing a new methodology for determining the charge states of HAp surfaces.
Article
Chemistry, Physical
Sonika Arti, Kamaljeet Kaur, Jagroop Kaur, Tushar K. Ghosh, Tarlok S. Banipal, Parampaul K. Banipal
Summary: Cyclodextrins, with their internal cavity structure, are suitable for forming inclusion complexes with various drugs. Research findings indicate that the binding stability of trimethoprim is highest with beta-cyclodextrin, followed by gamma-cyclodextrin, and the least with alpha-cyclodextrin.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Wanqiang Zhou, Yanlin Shi, Yao Li, Dongfan Xian, Jingyi Wang, Chunli Liu
Summary: The adsorption behavior of Eu(III) on rutile is influenced by different factors under varying acidic conditions. The use of a surface complexation model (SCM) successfully describes the adsorption behavior of Eu(III) at the rutile/water interface.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Environmental
Lijia Dong, Qing Liao, Chunlei Wu, Kui Du, Guodong Sheng
Summary: This study characterized the g-C3N4 before and after adsorption of Cu2+, Pb2+, and Zn2+ and calculated two types of C3N4 structures. The results suggest that the heavy metals were trapped in distinct structures within the g-C3N4 material, providing new insights into the adsorption mechanism for heavy metal ions in water.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Yahui Yin, Weiping Liu, Xia Li, Yu Zhou, Xianzhen Xu
Summary: The vapor-liquid equilibrium data of amino acids is of great importance in chemical engineering. The VLE data of L-Alanine + H2O, DL-Valine + H2O and DL-Methionine + H2O were experimentally measured and analyzed using NRTL-Xu model and COSMOthermX. Results showed that the vapor pressure increased with temperature, and the higher solubility system had lower vapor pressure compared to the low solubility system and pure solvent. The FTIR spectroscopy technique revealed that the solubility of amino acids in water correlated with the strength of hydrogen bond interaction. COSMOthermX analysis indicated that the total mean interaction energy was minimally affected by concentration.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Gabriel L. Murphy, Zhaoming Zhang, Rebekka Tesch, Piotr M. Kowalski, Maxim Avdeev, Eugenia Y. Kuo, Daniel J. Gregg, Philip Kegler, Evgeny Alekseev, Brendan J. Kennedy
Summary: A systematic investigation was conducted on the origins of structural distortions in rutile-related ternary uranium AUO(4) oxides using a combination of high-resolution structural and spectroscopic measurements supported by ab initio calculations. Analysis showed that all five oxides contain hexavalent uranium and the structural distortions are attributed to size mismatch between A(2+) and U6+ cations.
INORGANIC CHEMISTRY
(2021)
Article
Geochemistry & Geophysics
Hui Xie, Shilin Zhang, Jingyan Liu, Jinqing Hu, Aidong Tang
Summary: A novel strategy for the sustainable development of simple and efficient adsorbents was developed in this study by utilizing low-grade clay minerals, showing high Pb(II) adsorption capacity and selectivity, with adsorption kinetics and isotherms conforming to quasi-second-order kinetic and Langmuir models.
Article
Chemistry, Physical
Zhengyuan Feng, Chuanping Feng, Nan Chen, Shizhong Wang
Summary: In this study, a novel magnetic hydrogel PAA/CMS/Fe3S4 was prepared for the adsorption of Pb and Cu from water. Fe3S4 was added as a magnetic factor to the hydrogel, which not only prevented its oxidation but also enhanced the adsorption capacity. The hydrogel exhibited stability in the pH range of 3.0 to 6.0 and followed pseudo-second-order and Langmuir-Freundlich models during the adsorption process. Functional groups in PAA/CMS/Fe3S4 were identified through FTIR and XPS, indicating complexation with Pb and Cu. XRD results suggested the formation of PbS and CuS due to the presence of Fe3S4. Density-functional theory analysis revealed a stronger interaction between Pb and Fe3S4 compared to Cu and Fe3S4. Overall, PAA/CMS/Fe3S4 magnetic hydrogel shows promise as an effective adsorbent for Pb and Cu removal, and this work provides a new approach for the application of Fe3S4 in magnetic adsorbents.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Materials Science, Ceramics
A. F. P. Allwin Mabes Raj, Sara Krajnc, Maja Bauman, Marijana Lakic, Andreja Gutmaher, Aleksandra Lobnik, Aljosa Kosak
Summary: In this study, silica (SiO2) and amino-functionalized SiO2 particles (NH2@SiO2) were prepared using the Stober method and characterized. The results showed that NH2@SiO2 particles with APTMS exhibited the highest adsorption efficiency and capacity for Pb2+, Cr3+, and Hg2+ ions, with the adsorption process following pseudo-second-order kinetics and the Langmuir adsorption model. Furthermore, NH2@SiO2 particles could be desorbed using acid and organic acid, indicating their potential for reuse.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Ioannis Ioannidis, Ioannis Anastopoulos, Ioannis Pashalidis
Summary: The sorption of neptunium by different microplastic materials (MPs) in laboratory water and seawater samples was studied. The results showed that the sorption efficiency of neptunium did not differ significantly between different microplastic materials, and it was mainly affected by the hydrolysis of Np(V) in alkaline conditions. In seawater, the sorption efficiency decreased dramatically due to the increased ionic strength and the presence of various cations.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Applied
Shejiang Liu, Jing Gao, Li Zhang, Yongkui Yang, Xiuli Liu
Summary: In this study, a DTCS-Fe3O4 composite was synthesized for efficient removal of Cr(VI) from aqueous solutions. With high adsorption capacity and remarkable performance, it is expected to find wide practical application in wastewater treatment.
CARBOHYDRATE POLYMERS
(2021)
Article
Engineering, Environmental
Ali Pournaghshband Isfahani, Ahmad A. Shamsabadi, Farbod Alimohammadi, Masoud Soroush
Summary: This study presents a simple method to improve the performance of MXene materials for the removal of heavy metal ions from water. Carboxylated MXene shows higher adsorption capacity and faster adsorption rate for mercury ions, as well as improved stability.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Analytical
Wentong Fan, Lin Li, Jiajia Yuan, Xuejuan Ma, Jia Jia, Xinfeng Zhang
Summary: The study demonstrates an AIE effect within peroxyoxalate-loaded silica nanoparticles for efficient harvest of chemiluminescence energy, enabling the system to work efficiently in aqueous solutions at physiological pH with a low detection limit. The BTPA-PMSN CL system shows high CL quantum yield and is appealing for biosensing applications.
ANALYTICAL CHEMISTRY
(2021)
Editorial Material
Materials Science, Ceramics
Kyle Brinkman, Armin Feldhoff, Eva Hemmer, Krista Carlson
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Katharina Kruppa, Itzhak I. Maor, Frank Steinbach, Vadim Beilin, Meirav Mann-Lahav, Mario Wolf, Gideon S. Grader, Armin Feldhoff
Summary: Oxide-based ceramics offer promising thermoelectric materials for recycling high-temperature waste heat. In this study, electrospun nanofibers of calcium cobaltite were compacted to improve the functional performance of the material and achieve thermal stability.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Reshalaiti Hailili, Xiaokaiti Reyimu, Zelong Li, Xu Lu, Detlef W. Bahnemann
Summary: Effective removal of dilute nitrogen oxide (NO, ppb) without NO2 emission is still challenging in environmental pollution control. The construction of photocatalysts with diversified microstructures and atomic arrangements has been found to promote NO adsorption, activation, and complete removal without secondary pollution. In this study, the microstructure of ZnO photocatalysts was regulated by altering the reaction temperature and alkalinity, resulting in enhanced NO removal and reduced NO2 yields through defect-related surface-interface aspects. Mechanistic exploitations revealed that regulated microstructures, defect-related charge carrier separation, and strengthened surface interactions contributed to improved NO removal and simultaneous avoidance of NO2 formation. This investigation sheds light on the facile regulation of microstructures and the roles of surface chemistry in the oxidation of low concentration NO in the ppb level upon light illumination.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Muhammad Kamran, Tarek A. Kandiel, Safwat Abdel-Azeim, Mohamed A. Morsy, Detlef W. Bahnemann
Summary: This article explores TiO2 nanomaterials as promising photocatalysts for NOx depollution from air under sunlight irradiation. Experimental results show that brookite TiO2 exhibits comparable photocatalytic activity to benchmark TiO2 P25 and higher selectivity towards the conversion of NOx into nitrate ions. The enhanced selectivity is attributed to the higher density of defects on brookite TiO2 surfaces, which facilitates the adsorption of NO2 while favoring the dissociative adsorption of water.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Jing Ma, Yang Tang, Gui Lu, Yu Wang, Wenke Niu, Dong Fu, Kai Zhang, Detlef W. Bahnemann, Jia Hong Pan
Summary: A PVDF/CB/TiO2 conductive membrane was fabricated through the hybridization of PVDF, mesoporous TiO2 spheres (MTS), and carbon black (CB). The membrane showed a highly porous structure and excellent photoelectrocatalytic (PEC) properties, achieving a high decolorization rate of methylene blue (MB) in a continuous cross-flow filtration process.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Nanoscience & Nanotechnology
Haoran Wang, Reshalaiti Hailili, Xiaoyu Jiang, Guoliang Yuan, Detlef W. Bahnemann, Xiong Wang
Summary: The successful construction of heterojunction facilitates the improvement of solar light utilization efficiency. In this study, visible-light-driven AgBr was deposited on the surface of lamellar BiVO4 to enhance charge carrier separation and photocatalytic effectiveness. The catalyst with an optimal AgBr/BiVO4 ratio exhibited significantly enhanced decolorization ability and high stability. The S-scheme carrier migration mechanism was investigated, revealing the effective charge carrier separation/transfer and the excellent photocatalytic performance.
Article
Chemistry, Multidisciplinary
Jakob Schlenkrich, Franziska Luebkemann-Warwas, Rebecca T. Graf, Christoph Wesemann, Larissa Schoske, Marina Rosebrock, Karen D. J. Hindricks, Peter Behrens, Detlef W. Bahnemann, Dirk Dorfs, Nadja C. Bigall
Summary: Destabilizing ligand-stabilized semiconductor nanocrystal solutions results in the formation of macroporous self-supporting nanocrystal networks called hydrogels, which have high surface accessibility. The delocalization of charge carriers in these gels extends their mobility and enhances photocatalytic reactions. Recent advances in colloid chemistry enable the synthesis of nanocrystals with specific physicochemical properties, which, when combined with nanocrystal-based hydrogels, can lead to novel materials with optimized photocatalytic properties. This study demonstrates that CdSe quantum dots, CdS nanorods, and CdSe/CdS dot-in-rod-shaped nanorods as nanocrystal-based hydrogels show significantly higher hydrogen production rates compared to their ligand-stabilized nanocrystal solutions. The gel synthesis through controlled destabilization by ligand oxidation ensures high surface-to-volume ratio, facilitates photocatalytic hydrogen production without a co-catalyst, and overcomes colloidal instability issues in photocatalysis. X-ray photoelectron spectroscopy and photoelectrochemical measurements confirm the advantageous properties of these 3D networks for photocatalytic hydrogen production.
Article
Materials Science, Multidisciplinary
Volodymyr Vasylkovskyi, Iryna Bespalova, Oleksandr Gryshkov, Mykola Slipchenko, Serhii Tkachenko, Pavlo Arhipov, Iaroslav Gerasymov, Yuriy Zholudov, Zhijun Zhao, Armin Feldhoff, Aleksander Sorokin, Olena Slipchenko, Borys Grynyov, Boris Chichkov
Summary: CeAlO3 nanocrystals with perovskite structure were synthesized for the first time using pulsed laser ablation technique. The morphological and optical properties of the nanocrystals were investigated. This work opens up new possibilities for the generation of perovskite nanocrystals and the development of novel nanocomposite structures using laser ablation methods, which can have applications in perovskite solar cells, scintillation detectors, catalysts, etc.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Editorial Material
Chemistry, Physical
Kangwoo Cho, Wonyong Choi, Detlef Bahnemann
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Editorial Material
Chemistry, Physical
Kangwoo Cho, Wonyong Choi, Detlef Bahnemann
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Melanie Johanning, Marc Widenmeyer, Giamper Escobar Cano, Vanessa Zeller, Sebastian Klemenz, Guoxing Chen, Armin Feldhoff, Anke Weidenkaff
Summary: The development of a circular economy based on sustainable technologies requires the integration of materials recycling and a minimal environmental impact. This study demonstrates the integration of life cycle assessment (LCA) into the development of a chemical (recycling) process, showing that recycling reduces the environmental impact. These results encourage the integration of LCA as a standard method in the development of sustainable chemical processes.
Article
Chemistry, Multidisciplinary
Zhijun Zhao, Guoxing Chen, Giamper Escobar Cano, Patrick A. Kissling, Oliver Stoelting, Bernd Breidenstein, Sebastian Polarz, Nadja C. Bigall, Anke Weidenkaff, Armin Feldhoff
Summary: Nd2NiO4+delta, a Ruddlesden-Popper oxide, shows improved oxygen permeation membrane performance by adjusting grain orientation, making it a promising candidate for industrial applications in air separation, syngas production, and CO2 capture.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Biochemistry & Molecular Biology
Aasir Rashid, Hyunjung Lim, Daniel Plaz, Giamper Escobar Cano, Marc Bresser, Katharina-Sophia Wiegers, Giorgia Confalonieri, Sungho Baek, Guoxing Chen, Armin Feldhoff, Andreas Schulz, Anke Weidenkaff, Marc Widenmeyer
Summary: This study investigates the compatibility of La0.6Ca0.4Co1-xFexO3-d membranes with hydrogen and explores the possibility of incorporating green hydrogen into the CO2 conversion process. The research finds that the La0.6Ca0.4Co0.2Fe0.8O3-d membrane shows tolerance towards reducing conditions of hydrogen.
Article
Engineering, Environmental
Haitao Ren, Fan Qi, Abdelkader Labidi, Ahmed A. Allam, Jamaan S. Ajarem, Detlef W. Bahnemann, Chuanyi Wang
Summary: In this study, carbon quantum dots (CQDs) with excellent fluorescence properties were prepared from apple leaf waste and used as a fluorescent probe for the detection of Fe3+ in aqueous environments. The CQDs exhibited high fluorescence stability, specific recognition ability for Fe3+, and recyclability.
ACS ES&T ENGINEERING
(2023)
Article
Computer Science, Interdisciplinary Applications
Marvin Abt, Katharina Kruppa, Mario Wolf, Armin Feldhoff, Ludger Overmeyer
Summary: This research demonstrates a proof-of-concept for the fabrication of modular, customizable, and temperature-stable TEGs using an alternative laser process. By using low temperature cofired ceramics substrates, the TEGs were structured and cut without masks using a laser and then sintered to form a solid structure. The experiments showed that the TEGs achieved high power and voltage output.
ENGINEERING REPORTS
(2023)
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)
