Large-scale two-dimensional titanium carbide MXene as SERS-active substrate for reliable and sensitive detection of organic pollutants

Liu, Rongyang; Jiang, Li Jun; Lu, Chengxing; Zi, Yu; Li, Fanghao; Jing, Xufeng; Xu, Rui; Zhou, Wei; Jin, Shangzhong

doi:10.1016/j.saa.2020.118336

Cited by 49 publications

(35 citation statements)

References 44 publications

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“…with the lowest detected Raman signals up to 10 −8 M. [106,107] When the substrate was switched to another MXene (Ti 2 NT x ), it presented prominent enhancement for Rh6G at 532 nm by a factor of 10 12 . Furthermore, the composed nanostructure Ti 3 C 2 T x /AuNR SERS substrate could significantly improve the R6G detection limit to 10 −12 .…”

Section: Plasmonic Propertiesmentioning

confidence: 99%

MXenes: Synthesis, Optical Properties, and Applications in Ultrafast Photonics

Sun

Wang

et al. 2021

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Recently, 2D materials are in great demand for various applications such as optical devices, supercapacitors, sensors, and biomedicine. MXenes as a kind of novel 2D material have attracted considerable research interest due to their outstanding mechanical, thermal, electrical, and optical properties. Especially, the excellent nonlinear optical response enables them to be potential candidates for the applications in ultrafast photonics. Here, a review of MXenes synthesis, optical properties, and applications in ultrafast lasers is presented. First, aqueous acid etching and chemical vapor deposition methods for preparing MXenes are introduced, in which the storage stability and challenges of the existing synthesis techniques are also discussed. Then, the optical properties of MXenes are discussed specifically, including plasmonic properties, optical detection, photothermal effects, and ultrafast dynamics. Furthermore, the typical ultrafast pulsed lasers enabled by MXene-based saturable absorbers operated at different wavelength regions are summarized. Finally, a summary and outlook on the development of MXenes is presented in the perspectives section.

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Section: Plasmonic Propertiesmentioning

confidence: 99%

MXenes: Synthesis, Optical Properties, and Applications in Ultrafast Photonics

Sun

Wang

et al. 2021

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154

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“…Afterwards, the following studies included other types of MXenes as well, such as nitride Ti 2 N, which yielded a notable enhancement factor of 10 12 [22]. Recently, more publications appeared on thickness dependence of SERS in Ti 3 C 2 T x nanosheets [23], or for using it as a SERS active substrate for reliable and sensitive detection of organic pollutants [24]. A systematic theoretical understanding of the optical properties of MXenes is not developed yet, which makes difficult the interpretation of all the experimental data.…”

Section: Introductionmentioning

confidence: 99%

Interband, Surface Plasmon and Fano Resonances in Titanium Carbide (MXene) Nanoparticles in the Visible to Infrared Range

et al. 2021

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Since the discovery of the optical properties of two-dimensional (2D) titanium carbide (MXene) conductive material, an ever increasing interest has been devoted towards understanding it as a plasmonic substrate or nanoparticle. This noble metal-free alternative holds promise not only due to its lower cost but also its 2D nature, hydrophilicity and apparent bio-compatibility. Herein, the optical properties of the most widely studied Ti3C2Tx MXene nanosheets are theoretically analyzed and absorption cross-sections are calculated exploiting available experimental data on its dielectric function. The occurrence of quadrupole surface plasmon mode in the optical absorption spectra of large MXene nanoparticles is demonstrated for the first time. The resonance wavelengths corresponding to interband transitions, longitudinal and transversal dipole oscillations and quadrupole longitudinal surface plasmon mode are identified for single and coupled nanoparticles by modeling their shapes as ellipsoids, disks and cylinders. A new mechanism of excitation of longwave transversal surface plasmon oscillations by an external electric field perpendicular to the direction of charge oscillations is presented. Excitingly enough, a new effect in coupled MXene nanoparticles—Fano resonance—is unveiled. The results of calculations are compared to known experimental data on electron absorption spectroscopy, and good agreement is demonstrated.

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“…In the above 2D family, the 2D transition-metal nitrides and carbides generally termed as MXene are the new comers. 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].…”

Section: Introductionmentioning

confidence: 99%

“…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]. Limbu et al explored the thickness-dependent SERS activity of TiC for detection of methylene blue (MB) [16].…”

Section: Introductionmentioning

confidence: 99%

“…Limbu et al explored the thickness-dependent SERS activity of TiC for detection of methylene blue (MB) [16]. Liu et al demonstrated the SERS activity of crystal violet, rhodamine 6G, and malachite green using TiC nanosheets [15]. Satheeshkumar et al analyzed the ability of TiC by the in situ decoration of multiple plasmonic NPs to detect MB [17].…”

Section: Introductionmentioning

confidence: 99%

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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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Large-scale two-dimensional titanium carbide MXene as SERS-active substrate for reliable and sensitive detection of organic pollutants

Cited by 49 publications

References 44 publications

MXenes: Synthesis, Optical Properties, and Applications in Ultrafast Photonics

MXenes: Synthesis, Optical Properties, and Applications in Ultrafast Photonics

Interband, Surface Plasmon and Fano Resonances in Titanium Carbide (MXene) Nanoparticles in the Visible to Infrared Range

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

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