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Deciphering the surface electrochemical reconstruction of ruthenium-cobalt-nickel phosphide for efficient high-current hydrogen evolution and overall water splitting.
J Colloid Interface Sci
December 2024
Key Laboratory of Green Utilization of Critical Non-metallic Mineral Resources of Ministry of Education, Wuhan University of Technology, Wuhan, Hubei 430073, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei 430073, China. Electronic address:
Development of efficient and stable bifunctional transition metal phosphide catalysts is critical for advancing hydrogen production technologies. Herein, RuCo co-doped NiP (RuCoNiP) was designed and synthesized by one-step electrodeposition for Ni electronic structure modulation, and evolved to RuCoNiP@α-Ni(OH) and RuCoNiP@Co/Ni(OH) heterointerfaces by self-assembled reconstruction during HER and OER processes, respectively. RuCoNiP@α-Ni(OH) enhances HER activity (305.
View Article and Find Full Text PDFHeparinized collagen-based hydrogels for tissue engineering: physical, mechanical and biological properties.
Int J Pharm
December 2024
Université de Lorraine, CITHEFOR, F-54000 Nancy, France. Electronic address:
As the main protein forming the vascular extracellular matrix, collagen has a weak antigenicity, making it an attractive candidate for coatings of vascular grafts. In order to bring antithrombotic properties to collagen for obtaining suitable blood compatibility of surfaces and further bioactive molecule carrying capacity, heparinization appears as a method of choice. Thus, in this article, pH-driven self-assembly was used to form collagen-based hydrogels with physical incorporation of heparins, especially low molecular weight heparin or unfractionated heparin at 1 IU/mL and 6 IU/mL.
View Article and Find Full Text PDFBoc-Protected Phenylalanine and Tryptophan-Based Dipeptides: A Broad Spectrum Anti-Bacterial Agent.
Biopolymers
January 2025
Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, West Bengal, India.
Dipeptides were constructed using hydrophobic amino acid residues following AMP prediction. After that Boc-modification was performed on the screened peptides and finally Boc-Phe-Trp-OMe and Boc-Trp-Trp-OMe were synthesized. Even though no inhibition zones were observed in agar well diffusion assays, minimum inhibitory concentration (MIC) analysis revealed anti-bacterial activity against both Gram-positive and Gram-negative bacteria, with MIC ranging from 230 to 400 μg/mL.
View Article and Find Full Text PDFImpact of pH on sodium caseinate binding and structural changes on montmorillonite surface.
Int J Biol Macromol
December 2024
Univ Lyon, Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, F-69100 Villeurbanne, France. Electronic address:
The immobilization of proteins onto clay surfaces has proven beneficial for pharmaceutical and environmental applications. This study examines the adsorption of sodium caseinate (Cas), an amphiphilic protein widely used in pharmaceutical formulations, onto sodium montmorillonite (Mt). Adsorption isotherms and kinetics were examined at two pHs, above and below Cas isoelectric point (IEP).
View Article and Find Full Text PDFCapillary-driven self-assembly of soft ellipsoidal microgels at the air-water interface.
Proc Natl Acad Sci U S A
December 2024
Institute of Physical Chemistry, Rheinisch-Westfälische Technische Hochschule Aachen University, Aachen 52074, Germany.
The adsorption of ellipsoidal colloidal particles on liquid interfaces induces interfacial deformation, resulting in anisotropic interface-mediated interactions and the formation of superstructures. Soft prolate-shaped microgels at the air-water interface offer an ideal model for studying spontaneous capillary-driven self-assembly due to their tunable aspect ratio, controlled functionality, and softness. These microgels consist of a polystyrene core surrounded by a cross-linked, fluorescently labeled poly([Formula: see text]-isopropylmethylacrylamide) shell.
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