Platinum nanoparticles supported on Al-MCM-48 materials have been prepared. The resultant catalysts have been characterized by means of XRD, N2 physisorption experiments, scanning electron microscopy (SEM), transmission electron microscopy (TEM), temperature-programmed reduction (TPR), and diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS). The activity of these nanoparticles has been tested in relation to the hydroisomerisation of n-octane. The catalytic activities were typically 50 %, with selectivities in the isomerisation process in excess of 70 %, favouring the formation of the 3-methylheptane isomer with respect to the 2- and 4-methylheptanes.
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http://dx.doi.org/10.1002/chem.200800182 | DOI Listing |
Nanoscale
January 2025
Department of Materials Science and Engineering, Chair for Surface Science and Corrosion (WW4-LKO), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstraße 7, 91058 Erlangen, Germany.
The photocatalytic degradation of unwanted organic species has been investigated for decades using modified and non-modified titania nanostructures. In the present study, we investigate the co-catalytic effect of single atoms (SAs) of Pt and Pt nanoparticles on titania substrates on the degradation of the two typical photodegradation model pollutants: Acid Orange 7 (AO7) and Rhodamine B (RhB). For this, we use highly defined sputter deposited anatase layers and load them with Pt SAs at different loading densities or alternatively with Pt nanoparticles.
View Article and Find Full Text PDFNat Commun
January 2025
School of Environmental Science and Technology, Dalian University of Technology, Dalian, China.
Efficient detection methods are needed to monitor nitrogen dioxide (NO), a major NO pollutant from fossil fuel combustion that poses significant threats to both ecology and human health. Current NO detection technologies face limitations in stability and selectivity. Here, we present a transition metal nitride sensor that exhibits exceptional selectivity for NO, demonstrating a sensitivity 30 times greater than that of the strongest interfering gas, NO.
View Article and Find Full Text PDFACS Appl Bio Mater
January 2025
Department of Physics and Electronics, Christ University, Bengaluru, Karnataka, India 560029.
Pain and inflammation are common symptoms of a majority of the diseases. Chronic pain and inflammation, as well as related dreadful disorders, remain difficult to control due to a lack of safe and effective medications. In this work, biocompatible platinum nanoparticles with significant analgesic and anti-inflammatory action were synthesized through a wet chemical method using polyethylene glycol-400 as a capping agent and sodium borohydride as a reducing agent.
View Article and Find Full Text PDFChem Biol Interact
December 2024
Laboratory of Biophysics, University of Gdańsk, Gdańsk, Poland. Electronic address:
Breast cancer was the most frequent cause of cancer death in females in 2022. Despite the development of personalized therapies, chemotherapy frequently remains the only available treatment method. However, the administration of classic antineoplastic drugs, like cisplatin (CDDP), often causes severe side effects and may lead to drug resistance making the therapy inefficient.
View Article and Find Full Text PDFMembranes (Basel)
November 2024
Graduate Institute of Precision Engineering, National Chung Hsing University, Taichung City 402, Taiwan.
This work aims at the effects of anion-exchange membranes (AEMs) and ionomer binders on the catalyst electrodes for anion-exchange membrane fuel cells (AEMFCs). In the experiments, four metal catalysts (nano-grade Pt, PtRu, PdNi and Ag), four AEMs (aQAPS-S8, AT-1, X37-50T and X37-50RT) and two alkaline ionomers (aQAPS-S14 and XB-7) were used. They were verified through several technical parameters examination and cell performance comparison for the optimal selection of AMEs.
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