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Single-Atom Iridium-doped Carbon Dots Nanozyme with High Peroxidase-Like Activity as Colorimetric Sensors for Multimodal Detection of Mercury Ions.
Small
January 2025
Chongqing Key Laboratory of Prevention and Treatment for Occupational Diseases and Poisoning, First Affiliated Hospital of Chongqing Medical and Pharmaceutical College, Chongqing, 400060, China.
Nanozyme-based colorimetric sensors are promising approaches for environmental monitoring, food safety, and medical diagnostics. However, developing novel nanozymes that exhibit high catalytic activity, good dispersion in aqueous solution, high sensitivity, selectivity, and stability is challenging. In this study, for the first time, single-atom iridium-doped carbon dot nanozymes (SA Ir-CDs) are synthesized via a simple in situ pyrolysis process.
View Article and Find Full Text PDFSimultaneous quantification of Hg(II) and Pb(II) by square wave anodic stripping voltammetry using Bi/graphite electrode.
Heliyon
July 2024
Engineering Faculty, Department of Environmental and Chemical Engineering, Universidad Nacional de Colombia, Colombia.
In the present work, we report the synthesis and evaluation of a graphite-supported bismuth film working electrode (BiFE) in the simultaneous quantification of Hg(II) and Pb(II) at ppb levels. The BiFE was synthesized in-situ by electrodeposition in 1 M HNO as the supporting electrolyte at -0.5 V potential.
View Article and Find Full Text PDFsynthesis of ultrafine Cu(ii) metal immobilized on pectin hydrogel, modified by a CoFeO/Pr-SOH nanocomposite as a green catalyst for reduction of nitro compounds and synthesis of 1-tetrazoles.
RSC Adv
January 2025
Department of Chemistry, University of Kurdistan P. O. Box 66135-416 Sanandaj Iran +98 873324133 +98 8733624133.
Synthesis of 5-substituted 1-tetrazoles and reduction of a variety of nitro compounds presents a promising solution for the pharmaceutical and agricultural industries. However, the development of green catalysts with superior catalytic performance for this reaction remains a significant challenge. This research introduces a green protocol for the creation of ultrafine Cu(ii) metal immobilized on the surface of pectin hydrogel (HPEC), modified by a CoFeO/Pr-SOH magnetic nanocomposite, enabling the synthesis of tetrazoles and reduction of nitro compounds.
View Article and Find Full Text PDFStructural Transformation and Degradation of Cu Oxide Nanocatalysts during Electrochemical CO Reduction.
J Am Chem Soc
January 2025
Liquid Sunlight Alliance, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States.
The electrochemical CO reduction reaction (CORR) holds enormous potential as a carbon-neutral route to the sustainable production of fuels and platform chemicals. The durability for long-term operation is currently inadequate for commercialization, however, and the underlying deactivation process remains elusive. A fundamental understanding of the degradation mechanism of electrocatalysts, which can dictate the overall device performance, is needed.
View Article and Find Full Text PDFMolecular switch of the dendrite-to-spine transport of TDP-43/FMRP-bound neuronal mRNAs and its impairment in ASD.
Cell Mol Biol Lett
January 2025
PhD Program in Medical Neuroscience, Taipei Medical University, Taipei, Taiwan (R.O.C.).
Background: Regulation of messenger RNA (mRNA) transport and translation in neurons is essential for dendritic plasticity and learning/memory development. The trafficking of mRNAs along the hippocampal neuron dendrites remains translationally silent until they are selectively transported into the spines upon glutamate-induced receptor activation. However, the molecular mechanism(s) behind the spine entry of dendritic mRNAs under metabotropic glutamate receptor (mGluR)-mediated neuroactivation and long-term depression (LTD) as well as the fate of these mRNAs inside the spines are still elusive.
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