3D porous structure of ionic liquid-delaminated Ti3C2 MXene nanosheets for enhanced electrochemical sensing of tryptophan in real samples

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Фев. 25, 2025

Accurate measurement of tryptophan (Trp) levels is crucial for clinical and research purposes, such as nutritional assessment, disorder diagnosis, condition management, the study role Trp in disease pathophysiology. Herein, intercalation 1-octyl-3-methylimidazolium chloride [OMIM]+Cl− ionic liquids (ILs) between layers Ti3C2 MXenes results a 3D porous structure with large active surface area high interlayer spacing (d-spacing). Confined [OMIM]+ ions enhance electroactive sites transfer pathways at MXene IL interfaces improve electron efficiency oxidation, improving stability via strong π‒π electrostatic MXene‒IL interactions. Under optimal conditions, sensor demonstrated broad detection range Trp, ranging from 0.001 to 240 µM, low limit 0.06 nM (S/N = 3). Owing its exceptional stability, selectivity, reproducibility, proposed IL-Ti3C2/GCE exhibited significant potential detecting real amino acid granules urine samples.

Язык: Английский

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Ionic liquid-delaminated Ti3C2 MXene nanosheets for enhanced electrocatalytic oxidation of tryptophane in normal and breast cancer serum

Microchimica Acta, Год журнала: 2025, Номер 192(2)

Опубликована: Янв. 30, 2025

Язык: Английский

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Metal oxide/chalcogenide/hydroxide catalysts for water electrolysis

International Journal of Hydrogen Energy, Год журнала: 2024, Номер unknown

Опубликована: Окт. 1, 2024

Язык: Английский

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Quantifying Fluorescence Contrast of Latent Fingerprints Developed with Micro/Nanoparticles through Spectroscopic Analysis

Talanta, Год журнала: 2025, Номер 288, С. 127717 - 127717

Опубликована: Фев. 11, 2025

Язык: Английский

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Recent progress and challenges in ECL biosensors for the identification of small extracellular vesicle and clinical diagnosis

TrAC Trends in Analytical Chemistry, Год журнала: 2025, Номер unknown, С. 118253 - 118253

Опубликована: Апрель 1, 2025

Язык: Английский

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Digital microfluidic-based fluorescence methods for the automated determination of copper ions in wine

Microchimica Acta, Год журнала: 2025, Номер 192(3)

Опубликована: Фев. 13, 2025

Язык: Английский

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Vertical growth of rhenium disulfide on rGO empowers multi-signal amplification for ultrasensitive MiRNA-21 detection

Microchimica Acta, Год журнала: 2025, Номер 192(3)

Опубликована: Фев. 19, 2025

Язык: Английский

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Self‐Powered Glucose Biosensor Based on Non‐Enzymatic Biofuel Cells by Au Nanocluster/Pd Nanocube Heterostructure and Fe₃C@C‐Fe Single‐Atom Catalyst

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

Abstract Self‐powered biosensors (SPBs) based on biofuel cells (BFCs) use electrical output as a sensing signal without the need of external power supplies, providing feasible approach to constructing miniaturized implantable or portable devices. In this work, novel nanozyme gold nanoclusters/palladium nanocubes (AuNCs/PdNCs) heterostructure is successfully fabricated develop an innovatively self‐powered and non‐enzymatic glucose system. The AuNCs/PdNCs with oxidase (GOD)‐like activity exhibits superior electrocatalytic performance toward glucose. BFCs‐based SPBs system, established (anodic catalyst) single atomic Fe sites coupled carbon‐encapsulated 3 C crystals (Fe C@C‐Fe SACs cathodic platform, exceptional sensitivity 0.151 µW cm −2 m −1 (3.4 times higher than PdNCs), outstanding selectivity robust stability. system can be attributed synergistic cooperation between PdNCs AuNCs.

Язык: Английский

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In-situ Ti-Ir and ammonium thiocyanate modifiers for improvement of sensitivity of Sc to sub parts per billion levels and its accurate quantification in coal fly ash and red mud by GFAAS

Talanta, Год журнала: 2025, Номер 291, С. 127820 - 127820

Опубликована: Фев. 25, 2025

Язык: Английский

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Anodic Potential Driven Electrochemiluminescence of Luminol/O₂ System with the Immobilized TEMPO Mediator

Langmuir, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

The oxygen reduction reaction (ORR) has been recognized well as an essential step to trigger the electrochemiluminescence (ECL) of luminol/O2 system but suffers from sluggish kinetics. Herein, ECL without involving ORR is reported by using a 4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl (4-amino-TEMPO) grafted glassy carbon electrode (4-amino-TEMPO/GCE). This exhibits high catalytic activity toward oxidation luminol, though it covered with organic film. Such promoted luminol on results in 5.0-fold enhancement at anodic potential, ensuring detection more sensitive. mechanism studies indicate that catalysis 4-amino-TEMPO/GCE can provide additional anion radical (L–•) for enhancing system. Hence, this work introduces different approach modulate emission based immobilized catalyst.

Язык: Английский

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