MXene (Ti3C2T )-Ag nanocomplex as efficient and quantitative SERS biosensor platform by in-situ PDDA electrostatic self-assembly synthesis strategy

Liu, Rongyang; Jiang, Li Jun; Zi, Yu; Jing, Xufeng; Liang, Xiu; Wang, Dan; Yang, Bo; Lu, Chengxing; Zhou, Wei; Jin, Shangzhong

doi:10.1016/j.snb.2021.129581

Cited by 96 publications

(40 citation statements)

References 45 publications

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“…The platform made great contributions for detecting various contaminants [ 210 ]. In 2021, Liu’s team prepared an MXene (Ti 3 C 2 Tx) -Ag nanoparticles (NPs) hybrid SERS biosensor for detecting adenine molecules in biological environment with the LOD of 1 × 10 −8 mol/L [ 211 ]. Wang’s group used superhydrophobic SERS substrates to detect nitenpyram in the field of agriculture with the LOD of 1 nmol/L [ 212 ].…”

Section: Optical Detection Methodsmentioning

confidence: 99%

Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

Hou

Guo

et al. 2022

J. Anal. Test.

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Point-of-care testing (POCT), as a portable and user-friendly technology, can obtain accurate test results immediately at the sampling point. Nowadays, microfluidic paper-based analysis devices (μPads) have attracted the eye of the public and accelerated the development of POCT. A variety of detection methods are combined with μPads to realize precise, rapid and sensitive POCT. This article mainly introduced the development of electrochemistry and optical detection methods on μPads for POCT and their applications on disease analysis, environmental monitoring and food control in the past 5 years. Finally, the challenges and future development prospects of μPads for POCT were discussed.

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Section: Optical Detection Methodsmentioning

confidence: 99%

Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

Hou

Guo

et al. 2022

J. Anal. Test.

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“…Similarly, Liu et al. synthesized MXene (Ti 3 C 2 T x )‐Ag hybrid photocatalysts by in‐situ electrostatic self‐assembly method, in which citric acid‐coated Ag nanoparticles were loaded onto the negative surface of Ti 3 C 2 T x flakes through a positively charged polydiallyldimethylammonium chloride polymer [87] …”

Section: Synthesis Of Metal‐involved Hybrid Photocatalystsmentioning

confidence: 99%

Metal‐facilitated Photocatalytic Nanohybrids: Rational Design and Promising Environmental Applications

Guan

Zhang

Neng

et al. 2021

Chemistry An Asian Journal

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As a promising technique to potentially address the energy crisis and environmental issues, photocatalysis has been reported widely to exhibit various outstanding behaviors in production of new fuels/chemicals and treatment of contaminants. The photocatalytic performance is extremely dependent on the used photocatalysts, so that the design and preparation of efficient photocatalysts are critically important for significantly improving the photocatalytic activity. Among various strategies, the hybridization of metal with semiconductors has recently been attracting more and more research interest owing to their expended spectral absorption, promoted transferring rate of charge carriers and Plasmon‐enhanced effect. In this minireview, the metal‐facilitated hybrid photocatalysts are overviewed comprehensively to first reveal unique functions of metals in improvement of photoactivity and summarize the emerging metal‐involved hybrid systems. Subsequently, the synthetic methods towards hybrid photocatalysts are introduced and their practical applications are emphasized in environmental remediation including degradation of organic pollutants, conversion of harmful gases, treatment of heavy metal ions and sterilization of bacteria. At the end, the challenges for industrializing these hybrid photocatalysts are discussed carefully and future development is suggested rationally.

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“…The former is featured with the metallic nanostructure, which boosts the SERS signal by the action of localized surface plasmon resonance (LSPR). The latter is accompanied with the charge transfer between the probe molecules and the SERS substrate, especially through semiconductors [12]. Various studies have been devoted to develop SERS substrates with semiconductors incorporated with noble metals to achieve superior SERS sensing.…”

Section: Introductionmentioning

confidence: 99%

“…Among MXene, titanium carbide (TiC) as a narrow bandgap semiconductor gains immense attention from the researchers to develop MXene-based SERS substrates [15]. Previous literatures have reported that MXene-based SERS substrates generate a promising enhancement factor (EF) in the range 10 5 -10 12 to detect the deleterious molecules [16]. TiC is considered to be unique among 2D materials for SERS applications because it can induce the LSPR action in the wavelength range from infrared to ultraviolet and has the ability to uniformly distribute probe molecules on its surface to achieve high degree of SERS enhancement [15].…”

Section: Introductionmentioning

confidence: 99%

A photochemical approach to anchor Au NPs on MXene as a prominent SERS substrate for ultrasensitive detection of chlorpromazine

2021

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As a novel two-dimensional (2D) material, metal carbide (MXene) has been identified as a hotspot research topic in the field of surface-enhanced Raman spectroscopy (SERS). Herein, we report the increment of SERS activity of titanium carbide (TiC) by incorporation of gold nanoparticles (Au NPs) by a facile photoreduction process for the detection of antipsychotic drug. TiC anchored with Au NPs produce a remarkable SERS enhancement by the synergistic action of chemical and electromagnetic mechanisms. The hotspots are formed in the nanometer-scale gaps between Au NPs on the TiC surface for the effective interaction with probe molecules. The proposed TiC/Au-NPs SERS substrate was employed for the detection of chlorpromazine (CPZ) with the wide linear range of 10 −1 -10 −10 M and the ultra-low limit of detection of 3.92 × 10 −11 M. Besides, the SERS effect of the optimized TiC/Au-NPs for the 532 nm excitation exhibits the enhancement factor in the order of 10 9 with the relative standard deviation of < 13% for the uniformity and < 8.80% for the reproducibility. To ensure the practical feasibility of the proposed TiC/Au-NPs SERS substrate, the spike and recovery method was used for the detection of CPZ in human biological fluids like urine and saliva. This work can open up a new approach to improve the SERS activity of MXene-based SERS substrate for practical applications, especially the determination of antipsychotic drugs in environmental pollution management.

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MXene (Ti3C2T )-Ag nanocomplex as efficient and quantitative SERS biosensor platform by in-situ PDDA electrostatic self-assembly synthesis strategy

Cited by 96 publications

References 45 publications

Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

Metal‐facilitated Photocatalytic Nanohybrids: Rational Design and Promising Environmental Applications

A photochemical approach to anchor Au NPs on MXene as a prominent SERS substrate for ultrasensitive detection of chlorpromazine

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