Synthesis and surface-enhanced Raman scattering of indium nanotriangles and nanowires

Das, Ritwick; Soni, R. K.

doi:10.1039/c7ra03317f

Cited by 28 publications

(25 citation statements)

References 51 publications

(57 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hence, in cases where the particle size and shape varies, the relationship between absorption maxima and SERS enhancement is not direct and could even be misleading. It is also reported by Rupali Das et al . that SERS enhancement not only stems from surface plasmons but also depends on factors such as surface roughness, size, shape, and local curvatures of nanoparticles.…”

Section: Resultsmentioning

confidence: 83%

Two-Dimensional Titanium Nitride (Ti₂N) MXene: Synthesis, Characterization, and Potential Application as Surface-Enhanced Raman Scattering Substrate

2017

View full text Add to dashboard Cite

We report on the synthesis, characterization, and application of TiN (MXene), a two-dimensional transition metal nitride of MX type. Synthesis of nitride-based MXenes (MN) is difficult due to their higher formation energy from MAN and poor stability of MN layers in the etchant employed, typically HF. Herein, the selective etching of Al from ternary layered transition metal nitride TiAlN (MAX) and intercalation were achieved by immersing the powder in a mixture of potassium fluoride and hydrochloric acid. The multilayered TiNT (T is the surface termination) obtained was sonicated in DMSO and centrifuged to obtain few-layered TiNT. MXene formation was verified, and the material was completely characterized by Raman spectroscopy, XRD, XPS, FESEM-EDS, TEM, STM, and AFM techniques. Surface-enhanced Raman scattering (SERS) activity of the synthesized TiNT was investigated by fabricating paper, silicon, and glass-based SERS substrates. A Raman enhancement factor of 10 was demonstrated using rhodamine 6G as the model compound with 532 nm excitation wavelength. Detection of trace level explosives with a simple paper-based SERS substrate with TiN (MXene) as active material was also illustrated.

show abstract

Section: Resultsmentioning

confidence: 83%

Two-Dimensional Titanium Nitride (Ti₂N) MXene: Synthesis, Characterization, and Potential Application as Surface-Enhanced Raman Scattering Substrate

2017

View full text Add to dashboard Cite

show abstract

“…The XPS spectrum for the In3d region can be fitted by one spin-orbit doublet (2d 3/2 and 3d 5/2 ). The position of the 3d 5/2 peak is slightly higher than for In 0 and lower than for the oxide compounds [47,48]. It could be correlated with an electron transfer to the matrix in the In-filled CoSb 3 [49], confirming the electron-donor character of In atoms.…”

Section: Structural and Microstructural Analysismentioning

confidence: 74%

New synthesis route of highly porous InxCo4Sb12 with strongly reduced thermal conductivity

et al. 2020

View full text Add to dashboard Cite

Highly porous, In-filled CoSb 3 skutterudite materials with an attractive thermoelectric figure of merit (ZT * 1) and corresponding dense samples were fabricated through the cost-effective method of reduction in oxides in dry hydrogen and the pulsed electric current sintering (PECS) method, respectively. The reduction process was described in detail using in situ thermogravimetric analysis of Co 2 O 3 , Sb 2 O 3 and In(NO 3) 3 Á5H 2 O separately and in a mixture. Two methods to synthesise the same material were examined: (a) free sintering of an initially reduced powder and (b) PECS. The free-sintered materials with higher porosities (up to * 40%) exhibited lower values of electrical conductivity than the dense PECS samples (porosity up to * 5%), but the benefit of an even sixfold reduction in thermal conductivity resulted in higher ZT values. The theoretical values of thermal conductivity for various effective media models considering randomly oriented spheroid pores are in good agreement with the experimental thermal conductivity data. The assumed distribution and shape of the pores correlated well with the scanning electron microscope analysis of the microstructure. The lowest value of thermal conductivity, equal to 0.5 W/m K, was measured at 523 K for In 0.1 Co 4 Sb 12 with 41% porosity. The highest value of ZT max = 1.0 at 673 K was found for the In 0.2 Co 4 Sb 12 sample in which the porosity was 36%.

show abstract

“…The anisotropic sharp tips and corners of triangle and particulate in nanostructures were demonstrated to be great choices for achieving large enhancements. 172 Fibrous morphology provided appropriate roughness for enhancement. It has been proved that Ti 2 NT x -based SERS substrates can achieve trace single molecule detection.…”

Section: Outlook and Summarymentioning

confidence: 99%

“…The anisotropic sharp tips and corners of triangle and particulate in nanostructures were demonstrated to be great choices for achieving large enhancements. 172 174 For traditional production methods, laser ablation can accurately manufacture nanoparticle arrays for SERS point by point. But it is time-consuming and di±cult to obtain large-sized substrates.…”

Section: Outlook and Summarymentioning

confidence: 99%

Applications of Raman spectroscopy in two-dimensional materials

Yin

Lin

2020

J. Innov. Opt. Health Sci.

View full text Add to dashboard Cite

At present, two-dimensional (2D) materials have shown great application potential in numerous fields based on their physical chemical and electronic properties. Raman spectroscopy and derivative techniques are effective tools for characterizing 2D materials. Raman spectroscopy conveys lots of knowledge on 2D materials, including layer number, doping type, strain and interlayer coupling. This review summarized advanced applications of Raman spectroscopy in 2D materials. The challenges and possible applied directions of Raman spectroscopy to 2D materials are discussed in detail.

show abstract

Synthesis and surface-enhanced Raman scattering of indium nanotriangles and nanowires

Abstract: Indium nano-wires and -triangles are synthesizedviaa modified polyol reduction method and self-assembled on silane treated glass coverslips as SERS substrates, giving large Raman signal enhancement from adsorbed tryptophan molecules under non-resonant excitation at 632.8 nm.

Cited by 28 publications

References 51 publications

Two-Dimensional Titanium Nitride (Ti₂N) MXene: Synthesis, Characterization, and Potential Application as Surface-Enhanced Raman Scattering Substrate

Two-Dimensional Titanium Nitride (Ti₂N) MXene: Synthesis, Characterization, and Potential Application as Surface-Enhanced Raman Scattering Substrate

New synthesis route of highly porous InxCo4Sb12 with strongly reduced thermal conductivity

Applications of Raman spectroscopy in two-dimensional materials

Contact Info

Product

Resources

About

Synthesis and surface-enhanced Raman scattering of indium nanotriangles and nanowires

Abstract: Indium nano-wires and -triangles are synthesizedviaa modified polyol reduction method and self-assembled on silane treated glass coverslips as SERS substrates, giving large Raman signal enhancement from adsorbed tryptophan molecules under non-resonant excitation at 632.8 nm.

Cited by 28 publications

References 51 publications

Two-Dimensional Titanium Nitride (Ti2N) MXene: Synthesis, Characterization, and Potential Application as Surface-Enhanced Raman Scattering Substrate

Two-Dimensional Titanium Nitride (Ti2N) MXene: Synthesis, Characterization, and Potential Application as Surface-Enhanced Raman Scattering Substrate

New synthesis route of highly porous InxCo4Sb12 with strongly reduced thermal conductivity

Applications of Raman spectroscopy in two-dimensional materials

Contact Info

Product

Resources

About

Two-Dimensional Titanium Nitride (Ti₂N) MXene: Synthesis, Characterization, and Potential Application as Surface-Enhanced Raman Scattering Substrate

Two-Dimensional Titanium Nitride (Ti₂N) MXene: Synthesis, Characterization, and Potential Application as Surface-Enhanced Raman Scattering Substrate