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Copper-Copper Oxide Heterostructural Nanocrystals Anchored on g-CN Nanosheets for Efficient Visible-Light-Driven Photo-Fenton-like Catalysis.
Molecules
January 2025
School of Environment, South China Normal University, Guangzhou 510006, China.
The development of efficient and sustainable photocatalysts for wastewater treatment remains a critical challenge in environmental remediation. In this study, a ternary photocatalyst, Cu-CuO/g-CN, was synthesized by embedding copper-copper oxide heterostructural nanocrystals onto g-CN nanosheets via a simple deposition method. Structural and optical characterization confirmed the successful formation of the heterostructure, which combines the narrow bandgap of CuO, the high stability of g-CN, and the surface plasmon resonance (SPR) effect of Cu nanoparticles.
View Article and Find Full Text PDFSynthesis and Characterization of Metal Particles Using Malic Acid-Derived Polyamides, Polyhydrazides, and Hydrazides.
Molecules
December 2024
School of Life Science, Shanxi University, Taiyuan 030006, China.
Malic acid-derived polyamides, polyhydrazides, and hydrazides exhibit strong potential for a variety of biological applications. This study demonstrates the synthesis of cobalt, silver, copper, zinc, and iron particles by a facile chemical reduction approach utilizing malic acid-derived polyamides, polyhydrazides, and hydrazides as stabilizing and reducing agents. Comprehensive characterization of the particles was performed using UV-Vis spectroscopy, FTIR, XRD, SEM, and EDX analysis.
View Article and Find Full Text PDFElectron transfer in polysaccharide monooxygenase catalysis.
Proc Natl Acad Sci U S A
January 2025
California Institute for Quantitative Biosciences, University of California, Berkeley, CA 94720.
Polysaccharide monooxygenase (PMO) catalysis involves the chemically difficult hydroxylation of unactivated C-H bonds in carbohydrates. The reaction requires reducing equivalents and will utilize either oxygen or hydrogen peroxide as a cosubstrate. Two key mechanistic questions are addressed here: 1) How does the enzyme regulate the timely and tightly controlled electron delivery to the mononuclear copper active site, especially when bound substrate occludes the active site? and 2) How does this electron delivery differ when utilizing oxygen or hydrogen peroxide as a cosubstrate? Using a computational approach, potential paths of electron transfer (ET) to the active site copper ion were identified in a representative AA9 family PMO from (PMO9E).
View Article and Find Full Text PDFA Hierarchical Core-Shell Structure of NiO@CuO-CF for Effective Non-Enzymatic Electrochemical Glucose Detection.
Nanomaterials (Basel)
December 2024
Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices, Huizhou University, Huizhou 516001, China.
Non-enzymatic glucose detection is an effective strategy to control the blood glucose level of diabetic patients. A novel hierarchical core-shell structure of nickel hydroxide shell coated copper hydroxide core based on copper foam (Ni(OH)@Cu(OH)-CF) was fabricated and derived from NiO@CuO-CF for glucose sensing. Cyclic voltammetry and amperometry experiments have demonstrated the efficient electrochemical catalysis of glucose under alkaline conditions.
View Article and Find Full Text PDFReliable Atom Probe Tomography of Cu Nanoparticles Through Tailored Encapsulation by an Electrodeposited Film.
Nanomaterials (Basel)
December 2024
Department of Materials Science, Montanuniversität Leoben, 8700 Leoben, Austria.
Nanoparticles are essential for energy storage, catalysis, and medical applications, emphasizing their accurate chemical characterization. However, atom probe tomography (APT) of nanoparticles sandwiched at the interface between an encapsulating film and a substrate poses difficulties. Poor adhesion at the film-substrate interface can cause specimen fracture during APT, while impurities may introduce additional peaks in the mass spectra.
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