98%
921
2 minutes
20
Fabricating three dimensional (3D) supramolecular frameworks (SMFs) into stable crystalline nanosheets remains a great challenge due to the homogeneous and weak inter-building block interactions along 3D directions. Herein, crystalline nanosheets of a 3D SMF with a uniform thickness of 4.8 ± 0.1 nm immobilized with Pt nanocrystals on the surface (Q[8]/Pt NSs) were fabricated the solid-liquid reaction between cucurbit[8]uril/HPtCl single crystals and hydrazine hydrate with the help of gas and heat yielded during the reaction process. A series of experiments and theoretical calculations reveal the ultrahigh stability of Q[8]/Pt NSs due to the high density hydrogen bonding interaction among neighboring Q[8] molecules. This in turn endows Q[8]/Pt NSs with excellent photocatalytic and continuous thermocatalytic CO oxidation performance, representing the thus-far reported best Pt nano-material-based catalysts.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11110140 | PMC |
http://dx.doi.org/10.1039/d4sc00656a | DOI Listing |
Front Microbiol
August 2025
State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China.
Introduction: Manganese-oxidizing bacteria (MOB) play a critical role in converting soluble Mn(II) to insoluble Mn(III/IV) oxides, which have been widely applied for environmental remediation, particularly in heavy metal pollution control. Therefore, the discovery of novel MOB strains is of great significance for advancing pollution mitigation and ecosystem restoration.
Methods: In this study, a manganese-oxidizing bacterial strain was isolated from Mn-contaminated soil near an electroplating factory using selective LB medium supplemented with 10 mmol/L manganese chloride (MnCl), and the Leucoberbelin Blue (LBB) assay was employed to screen and identify strains with strong Mn(II)-oxidation ability.
Anal Chem
September 2025
Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
Rational design of both mechanistic pathways and material compositions is essential to advance COF-based electrochemiluminescence (ECL) systems. In this study, aggregation-induced emission covalent organic framework (AIE-COF) nanoprobes with excellent ECL performance were developed based on Tb-functionalized covalent organic framework (Tb@A-COF). The Tb@A-COF system demonstrates enhanced ECL performance through synergistic integration of three complementary mechanisms: (1) (4',4',4',4'-(1,2-ethenediylidene)tetrakis [1,1'-biphenyl]-4-carboxaldehyde (ETBC) ligands function as antenna-like sensitizers that amplify luminescence intensity by 14.
View Article and Find Full Text PDFChemSusChem
August 2025
Department of Physics, School of Advanced Engineering, UPES, Dehradun, 248007, India.
Nickel cobalt carbonate hydroxide (NCCH) nanostructures with tunable morphologies, crystallite sizes, and defect structures are synthesized using a pH-modulated hydrothermal approach to explore the correlation between structural properties and electrochemical performance. Significant variations in crystallinity, surface area, chemical structure, and morphology are observed, as confirmed by synchrotron X-ray diffraction, Fourier-transform infrared spectroscopy, Raman spectroscopy, field-emission scanning electron microscopy, transmission electron microscopy, and Brunauer-Emmett-Teller analyses. Among the samples, the one synthesized at pH = 8.
View Article and Find Full Text PDFSmall Methods
August 2025
State Key Laboratory for Advanced Metals and Materials, University of Science & Technology Beijing, Beijing, 100083, China.
Two-dimensional (2D) nanomaterials of quasicrystals are highly desirable as these materials may have novel physical laws and properties that the 2D crystalline materials do not have, since the crystal structures of quasicrystals are quite different from those of traditional crystals. However, producing quasicrystal nanosheets with high yield still remains challenging because quasicrystals are generally non-van der Waals (n-vdW) solids with strong chemical bonds between constituent atoms, which makes them difficult to exfoliate. Here, an efficient liquid-phase shear exfoliation (LPSE) method is developed to successfully produce atomically-thin AlCoNi quasicrystal nanosheets with a gram-scale collection.
View Article and Find Full Text PDFPhys Chem Chem Phys
August 2025
Faculty of Engineering Physics, Hanoi University of Science and Technology, 1 Dai Co Viet Rd., Hanoi 10000, Vietnam.
The emergence of two-dimensional (2D) materials, particularly in the form of nanosheets, has attracted significant attention due to their extraordinary properties that differ markedly from those of their bulk counterparts. Among these materials, zinc oxide (ZnO) stands out for its highly tunable electronic, optical, and mechanical properties. However, understanding strain-induced phase transitions in few-layer systems remains a critical challenge, especially in nanoporous ZnO architectures.
View Article and Find Full Text PDF