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Valence Electron: A Descriptor of Spinel Sulfides for Sulfur Reduction Catalysis.
Adv Mater
January 2025
School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
Catalysts are essential for achieving high-performance lithium-sulfur batteries. The precise design and regulation of catalytic sites to strengthen their efficiency and robustness remains challenging. In this study, spinel sulfides and catalyst design principles through element doping are investigated.
View Article and Find Full Text PDFLattice Oxygen Redox Dynamics in Zeolite-Encapsulated CsPbBr Perovskite OER Electrocatalysts.
Adv Sci (Weinh)
January 2025
Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China.
Understanding the oxygen evolution reaction (OER) mechanism is pivotal for improving the overall efficiency of water electrolysis. Despite methylammonium lead halide perovskites (MAPbX) have shown promising OER performance due to their soft-lattice nature that allows lattice-oxygen oxidation of active α-PbO layer surface, the role of A-site MA or X-site elements in the electrochemical reconstruction and OER mechanisms has yet to be explored. Here, it is demonstrated that the OER mechanism of perovskite@zeolite composites is intrinsically dominated by the A-site group of lead-halide perovskites, while the type of X-site halogen is crucial for the reconstruction kinetics of the composites.
View Article and Find Full Text PDFOptical Activity of Chiral Excitons.
Adv Mater
January 2025
Center for Hybrid Organic-Inorganic Semiconductors for Energy, Golden, Colorado, 80401, USA.
Recent activity in the area of chiroptical phenomena has been focused on the connection between structural asymmetry, electron spin configuration and light/matter interactions in chiral semiconductors. In these systems, spin-splitting phenomena emerge due to inversion symmetry breaking and the presence of extended electronic states, yet the connection to chiroptical phenomena is lacking. Here, we develop an analytical effective mass model of chiral excitons, parameterized by density functional theory.
View Article and Find Full Text PDFOrientation-dependent photonic bandgaps in gold-dust weevil scales and their titania bioreplicates.
Beilstein J Nanotechnol
January 2025
Department for Chemistry and Physics of Materials, University of Salzburg, Jakob-Haringer-Str. 2a, 5020 Salzburg, Austria.
The scales of the gold-dust weevil are green because of three-dimensional diamond-type chitin-air photonic crystals with an average periodicity of about 430 nm and a chitin fill fraction of about 0.44. A single scale usually contains one to three crystallites with different lattice orientations.
View Article and Find Full Text PDFSubcortical Maternal Complex in Female Infertility: A Transition from Animal Models to Human Studies.
Mol Biol Rep
January 2025
Institute of Biotechnology and Genetic Engineering, The University of Agriculture, Peshawar, Pakistan.
Female infertility is a significant healthcare burden that is frequently encountered among couples globally. While environmental factors, comorbidities, and lifestyle determine reproductive health, certain genetic variants in key reproductive genes can potentially cause unsuccessful pregnancies. Such crucial proteins have been identified within the subcortical maternal complex (SCMC) and play an integral role in the early stages of embryogenesis before embryo implantation.
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