Materials Chemistry and Physics, Год журнала: 2024, Номер 332, С. 130274 - 130274
Опубликована: Дек. 12, 2024
Язык: Английский
Journal of Magnetism and Magnetic Materials, Год журнала: 2025, Номер unknown, С. 172948 - 172948
Опубликована: Март 1, 2025
Процитировано
0
ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown
Опубликована: Апрель 3, 2025
Epitaxial transition-metal oxide perovskite catalysts form a highly active catalyst class for the oxygen evolution reaction (OER). Understanding origin of chemical dissolution and surface transformations during OER is important to rationally design effective catalyst. These changes arise from complex interactions involving dynamic restructuring electronic/structural adaptations. Although initial instability common, surfaces can reach equilibrium through transformations. High entropy oxides (HEPOs), which incorporate multiple 3d metal cations in near-equimolar ratios, have emerged as promising due their enhanced activity compared single-cation variants, attributed high configurational compositional flexibility. To advance HEPO applications, understanding mechanisms governing (in)stability important. In this work, we examine degradation epitaxial La(Cr,Mn,Fe,Co,Ni)O3-δ thin films before after using complementary scanning tunneling microscopy (STM) X-ray photoelectron spectroscopy (XPS). STM reveals tip-induced as-grown under positive bias, anion removal charge trapping-induced lattice degradation, demonstrating its utility probe stability dynamics. Post-OER XPS analysis shows irreversible phase, characterized by 3d-metal leaching formation La d-metal (oxy)hydroxides. Our findings indicate that vacancies strain trigger structural breakdown these multi-cation OER, leading diminished catalytic performance phase. This work identifies likely primary driver transformation OER. We show offers an tool even operando conditions, find use similar material studies.
Язык: Английский
Процитировано
0
Materials, Год журнала: 2025, Номер 18(8), С. 1861 - 1861
Опубликована: Апрель 18, 2025
The development of multi-band laser suppression materials has been driven by the limitations single-band materials. Inorganic ceramic materials, compared with organic photonic crystals, and metamaterials, offer significant advantages in fabrication methods environmental stability. In this study, Co3+ ions, relatively higher electronegativity, were introduced to substitute some Fe ion sites ErFeO3. This substitution caused distortion crystal structure, reduced unit cell volume, altered band structure. As a result, gap was that ErFeO3, unique energy level transitions Er ions activated. led dual-band reflectances 22.16% at 1064 nm 35.63% 1540 nm. Furthermore, after high-temperature testing 1100 °C air, absorption performance could still be maintained intensity retention above 95%. strategy for improving structure provides potential applications suppression.
Язык: Английский
Процитировано
0
Journal of Inorganic and Organometallic Polymers and Materials, Год журнала: 2025, Номер unknown
Опубликована: Апрель 24, 2025
Язык: Английский
Процитировано
0
Nature Communications, Год журнала: 2025, Номер 16(1)
Опубликована: Апрель 29, 2025
Язык: Английский
Процитировано
0
Journal of Material Science and Technology, Год журнала: 2023, Номер 186, С. 158 - 163
Опубликована: Дек. 30, 2023
Язык: Английский
Процитировано
10
Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(22), С. 13328 - 13337
Опубликована: Янв. 1, 2024
A novel Bayesian approach significantly accelerates data collection for metal oxide reduction/re-oxidation thermodynamic fitting.
Язык: Английский
Процитировано
3
ACS Catalysis, Год журнала: 2024, Номер 14(19), С. 14974 - 15013
Опубликована: Сен. 25, 2024
Solar-driven thermochemical hydrogen (STCH) production represents a sustainable approach for converting solar energy into (H2) as clean fuel. This technology serves crucial feedstock synthetic fuel production, aligning with the principles of energy. The efficiency conversion process relies on meticulous tuning properties active materials, mostly commonly perovskite and fluorite oxides. Review conducts comprehensive review encompassing experimental, computational, thermodynamic kinetic property studies, primarily assessing utilization oxides in two-step reactions identifying essential attributes future research endeavors. Furthermore, this delves application machine learning (ML) density functional theory (DFT) predicting classifying materials. Through integration experimental investigations, computational modeling, ML methodologies, aspires to expedite screening optimization oxides, thus enhancing STCH processes. overarching objective is propel advancement practical systems, contributing significantly realization carbon-neutral landscape.
Язык: Английский
Процитировано
3
Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 363, С. 124789 - 124789
Опубликована: Ноя. 7, 2024
Язык: Английский
Процитировано
3
Korean Journal of Chemical Engineering, Год журнала: 2024, Номер unknown
Опубликована: Дек. 17, 2024
Abstract Chemical looping processes are considered a promising pathway for the efficient production of various fuels and chemicals. Temporally or spatially separated reduction oxidation reaction in chemical can offer advantages such as enhancing energy efficiency, surpassing equilibrium limitations, eliminating need separation. However, efficiency process highly depends on performance oxygen carrier. Higher gas conversion increase separation higher solid reduce amount cycled The indicators related to thermodynamic properties carriers their redox kinetics. This review introduces some key articles recent achievements enhancement properties. different research strategies discussed stoichiometric non-stoichiometric carriers. Through rational design carrier material, an energy-efficient is possible.
Язык: Английский
Процитировано
2