Cu/Cu2O nanoparticles modified Ti3C2 MXene with in-situ formed TiO2-X for detection of hydrogen peroxide

Li, Quan; Wang, Xing; Chen, Lei; Liu, Xin; Ma, Jingjing; Wang, Liang; Wang, Wentai

doi:10.1016/j.ceramint.2022.11.133

Cited by 13 publications

(4 citation statements)

References 46 publications

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“…Owing to the least conductivity and absence of the synergy effect, CuMgAl LDH/GCE reveals lesser H 2 O 2 reducing capability than that of CuMgAl LDH/Ti 3 C 2 T x -3/GCE. The superb electrocatalytic activity of CuMgAl LDH/Ti 3 C 2 T x -3/GCE might have arisen due to various factors such as (i) superlattice formed by successful insertion of extremely conductive Ti 3 C 2 T x sheets in CuMgAl LDH layers, facilitating fast electron transport; (ii) the superlattice possessing large surface area; (iii) the porous surface of the heterostacked assembly responsible for rapid diffusion of the analyte; (iv) layer-by-layer morphology of Ti 3 C 2 T x and CuMgAl LDH providing more interfacial collaborations at the nanoscale interface; and (v) structural integration of charged nanosheets harvesting a plethora of surface active sites, further improving the redox reactions. ,, In the case of CuMgAl LDH/Ti 3 C 2 T x , the possible electrochemical reactions related to H 2 O 2 can be described as follows , Cu 2 normalO + 2 OH − − 2 normale − → 2 CuO + normalH 2 normalO 2 CuO + normalH 2 normalO + 2 normale − → Cu 2 normalO + 2 OH − normalH 2 normalO 2 + 2 normale − → 2 OH − 4 OH − − 4 normale − → normalO 2 + normalH <...…”

Section: Resultsmentioning

confidence: 99%

“…Figure 4B As the amount of Ti 3 C 2 T x is increased more than the transitional ratio, aggregation takes place, which does not support the construction of heterostacked superlattice assembly, resulting in suppressing the charge-transferring channels, further reducing the electrocatalytic ability of CuMgAl LDH/Ti (v) structural integration of charged nanosheets harvesting a plethora of surface active sites, further improving the redox reactions. 22,30,31 In the case of CuMgAl LDH/Ti 3 C 2 T x , the possible electrochemical reactions related to H 2 O 2 can be described as follows 32,33 Cu O 2OH 2e 2CuO H O In this method, we started the assay by adding H 2 O 2 concentration even lower than 0.1 nM and then went on increasing it gradually from 0.05 nM to see the reduction current signal for H 2 O 2 . The detectable H 2 O 2 reduction current signal can be well noticed upon spiking 0.1 nM and 0.2 nM H 2 O 2 concentrations, so this is the real-time LOD.…”

Section: Electrocatalytic Properties Of Cumgal Ldh/ Ti 3 C 2 Tmentioning

confidence: 99%

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Hybridizing Ti₃C₂T_x Layers with Layered Double Hydroxide Nanosheets at the Molecular Level: A Smart Electrode Material for H₂O₂ Monitoring in Cancer Cells

Asif

Wang

Aziz

et al. 2023

ACS Appl. Mater. Interfaces

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Vertically stacked artificial 2D superlattice hybrids fabricated through molecular-level hybridization in a controlled fashion play a vital role in scientific and technological fields, but developing an alternate assembly of 2D atomic layers with strong electrostatic interactions could be much more challenging. In this study, we have constructed an alternately stacked self-assembled superlattice composite through integration of CuMgAl layered double hydroxide (LDH) nanosheets having positive charge with negatively charged Ti 3 C 2 T x layers using well-controlled liquid-phase co-feeding protocol and electrostatic attraction and investigated its electrochemical performance in sensing early cancer biomarkers, i.e., hydrogen peroxide (H 2 O 2 ). The molecular-level CuMgAl LDH/ Ti 3 C 2 T x superlattice self-assembly possesses superb conductivity and electrocatalytic properties, which are significant for obtaining a high electrochemical sensing aptitude. Electron penetration in Ti 3 C 2 T x layers and rapid ion diffusion along 2D galleries have shortened the diffusion path and enhanced the charge transferring efficacy. The electrode modified with the CuMgAl LDH/Ti 3 C 2 T x superlattice has demonstrated admirable electrocatalytic abilities in H 2 O 2 detection with a wide linear concentration range and low real-time limit of detection (LOD) of 0.1 nM with signal/noise ratio (S/N) = 3. Practically, an electrochemical sensing podium based on the CuMgAl LDH/Ti 3 C 2 T x superlattice has been effectively applied in real-time in vitro tracking of H 2 O 2 effluxes excreted from different live cancer cells and normal cells after being encouraged by stimulation. The results exhibit that molecular-level heteroassembly holds great potential in electrochemical sensors to detect promising biomarkers. KEYWORDS: Ti 3 C 2 T x layers, layered double hydroxide nanosheets, electrochemical sensor, H 2 O 2 detection, cancer cells

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Section: Resultsmentioning

confidence: 99%

Section: Electrocatalytic Properties Of Cumgal Ldh/ Ti 3 C 2 Tmentioning

confidence: 99%

Hybridizing Ti₃C₂T_x Layers with Layered Double Hydroxide Nanosheets at the Molecular Level: A Smart Electrode Material for H₂O₂ Monitoring in Cancer Cells

Asif

Wang

Aziz

et al. 2023

ACS Appl. Mater. Interfaces

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“…Li et al used Cu-Cu

O NPs on Ti

Tx MXene and used it for H

detection. This study can be extended for an MXene-based electrochemical sensor for glucose detection [ 84 ].…”

Section: 2dms In Electrochemical Sensing For Glucose Level In Bloodmentioning

confidence: 99%

Emerging Two-Dimensional Materials-Based Electrochemical Sensors for Human Health and Environment Applications

et al. 2023

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Two-dimensional materials (2DMs) have been vastly studied for various electrochemical sensors. Among these, the sensors that are directly related to human life and health are extremely important. Owing to their exclusive properties, 2DMs are vastly studied for electrochemical sensing. Here we have provided a selective overview of 2DMs-based electrochemical sensors that directly affect human life and health. We have explored graphene and its derivatives, transition metal dichalcogenide and MXenes-based electrochemical sensors for applications such as glucose detection in human blood, detection of nitrates and nitrites, and sensing of pesticides. We believe that the areas discussed here are extremely important and we have summarized the prominent reports on these significant areas together. We believe that our work will be able to provide guidelines for the evolution of electrochemical sensors in the future.

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“…There is a characteristic peak at Cu 2p 3/2 , belongs to Cu 0 /Cu + at 932.21 eV. There are two characteristic peaks at of Cu 2p 1/2 , [ 17 ] the peak at 953.3 eV belongs to Cu 0 /Cu + and the peak at 957.39 eV belongs to Cu 2+ . The high‐resolution energy spectrum of Ag is shown in Figure 4p, and contains two peaks, Ag 3d 5/2 and Ag 3d 3/2 , [ 18 ] with binding energies of 369.07 eV and 374.98 eV, respectively.…”

Section: Study Of the Physicochemical Propertiesmentioning

confidence: 99%

Preparation of High Conductive Medium and Establishment of Laege Capacity Conductive Channel

Zhang,

Liu,

Zhou

et al. 2023

Advanced Materials

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The preparation of highly conductive media and the construction of conducting channels play a crucial role in improving the electrical conductivity of Electrically Conductive Adhesives (ECAs). Therefore, a new MXene structure is reported in this paper, and the improved structure is rationally designed by computational modeling, which greatly prevents the buildup of MXene nanosheets, improves the stability of the structure, and creates a wide electron transfer channel, and the capacitance contribution of this structure is up to 86.3%. By mixing MXene modified with Ag‐plated copper powder in a quantitative relationship to form high conductive media, the electrical conductivity is largely improved and the defect of low electron transfer rate of conventional conductive fillers is broken. The potential value of high conductive media is largely exploited using high throughput and machine learning methods, and here we show that the resistivity has reached 9.668×10−7 Ω·m. The first principles investigate the conductive channels and electron transfer pathways of high conductive media at the atomic level, further revealing the mechanism of action of high conductive media. This study is also the first report on the application of MXene to high conductive media.This article is protected by copyright. All rights reserved

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Cu/Cu2O nanoparticles modified Ti3C2 MXene with in-situ formed TiO2-X for detection of hydrogen peroxide

Cited by 13 publications

References 46 publications

Hybridizing Ti₃C₂T_x Layers with Layered Double Hydroxide Nanosheets at the Molecular Level: A Smart Electrode Material for H₂O₂ Monitoring in Cancer Cells

Hybridizing Ti₃C₂T_x Layers with Layered Double Hydroxide Nanosheets at the Molecular Level: A Smart Electrode Material for H₂O₂ Monitoring in Cancer Cells

Emerging Two-Dimensional Materials-Based Electrochemical Sensors for Human Health and Environment Applications

Preparation of High Conductive Medium and Establishment of Laege Capacity Conductive Channel

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Cu/Cu2O nanoparticles modified Ti3C2 MXene with in-situ formed TiO2-X for detection of hydrogen peroxide

Cited by 13 publications

References 46 publications

Hybridizing Ti3C2Tx Layers with Layered Double Hydroxide Nanosheets at the Molecular Level: A Smart Electrode Material for H2O2 Monitoring in Cancer Cells

Hybridizing Ti3C2Tx Layers with Layered Double Hydroxide Nanosheets at the Molecular Level: A Smart Electrode Material for H2O2 Monitoring in Cancer Cells

Emerging Two-Dimensional Materials-Based Electrochemical Sensors for Human Health and Environment Applications

Preparation of High Conductive Medium and Establishment of Laege Capacity Conductive Channel

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Product

Resources

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Hybridizing Ti₃C₂T_x Layers with Layered Double Hydroxide Nanosheets at the Molecular Level: A Smart Electrode Material for H₂O₂ Monitoring in Cancer Cells

Hybridizing Ti₃C₂T_x Layers with Layered Double Hydroxide Nanosheets at the Molecular Level: A Smart Electrode Material for H₂O₂ Monitoring in Cancer Cells