There has been limited research devoted to secondary electron emission (SEE) from nano-materials using rapid and heavy ion bombardment. Here we report a comparison of SEE properties between novel nano-materials with a three-dimensional nano-structure composed of a mostly regular pattern of rods and gold used as a standard material for SEE under bombardment of heavy ions at energies of a few MeV/nucleon. The nano-structured materials show enhanced SEE properties when compared with gold. Results from this work will enable the development of new radiation detectors for science and industry.
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http://dx.doi.org/10.1038/s41598-021-89990-y | DOI Listing |
ACS Appl Mater Interfaces
January 2025
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China.
The hydrogen dissociation and spillover mechanism on oxide-supported Cu catalysts play a pivotal role in the hydrogenation of carbon dioxide to methanol. This study investigates the hydrogen spillover mechanism on Cu/CeO catalysts using spectral characterization under high-pressure reaction conditions and density functional theory (DFT) simulations. The research confirms that the Cu sites serve as the initial dissociation points for the hydrogen molecules.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Xiamen University, College of Chemistry and Chemical Engineering, Siming streat, Xiamen, CHINA.
Learning from nature has garnered significant attention in the scientific community for its potential to inspire creative solutions in material or catalyst design. The study reports a biomimetic single selenium (Se) site-modified carbon (C) moiety that retains the unique reactivity of selenoenzyme with peroxides, aiming to selectively catalyze the oxygen reduction reaction (ORR). The as-designed Se-C demonstrates nearly 100% 4-electron selectivity, evidenced by 0.
View Article and Find Full Text PDFJ Phys Chem A
January 2025
Centro de Bioinformática, Simulación y Modelado (CBSM), Departamento de Bioinformática, Facultad de Ingeniería, Universidad de Talca, Talca 3465548, Chile.
In this research, we investigated the essential role of biogenic volatile organic compound emissions in regulating tropospheric ozone levels, atmospheric chemistry, and climate dynamics. We explored linalool ozonolysis and secondary organic aerosol formation mechanisms, providing key insights into atmospheric processes. Computational techniques, such as density functional theory calculations and molecular dynamics simulations, were employed for the analysis.
View Article and Find Full Text PDFInt J Pharm
January 2025
University of Florence, Department of Chemistry, Via Ugo Schiff 6 50019 Sesto Fiorentino, Italy. Electronic address:
Usnic acid (UA) is one of the most abundant secondary metabolites of lichens. Its antibacterial, anti-inflammatory, antiviral, and antitumor properties make it one of the few commercially available lichens compounds. Owing to its low solubility it has limited application, for that reason encapsulation in polymeric micelles (UA-PM) has been used to solve this aspect.
View Article and Find Full Text PDFSci Rep
January 2025
Faculty of Nano and Bio Science and Technology, Persian Gulf University, Bushehr, 75169, Iran.
There are several studies that announce the inhibitory behavior of this sort of substance to strengthen the shield of metals, which is one of the positive benefits of green inhibitors. In the current investigation, Araucaria heterophylla studied as a green corrosion inhibitor to avert the mild steel during the acidic cleaning. The examination of this plant's ability to control corrosion at different concentrations in the acidic solution used certain expert measures.
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