Enhanced raman spectroscopy of 2,4,6-TNT in anatase and rutile titania nanocrystals

Cruz-Montoya, Edwin De La; Jeréz, Jaqueline I.; Balaguera-Gelves, Marcia; Luna-Pineda, Tatiana; Castro, Miguel E.; Hernández‐Rivera, Samuel P.

doi:10.1117/12.666129

Cited by 3 publications

(4 citation statements)

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“…The polymorphism of TiO2 in its rutile or anatase forms was examined in order to test their SERS effect by studying several anatase-rutile mixtures in different proportions. Rutile was found to produce higher Raman EF [43,44,46]. TNT and DNT were detected down to 100 pg and 10 ng, respectively, by using the optimum rutileanatase mixture, obtaining greater EFs than using AuNPs [43].…”

Section: Identification Of Explosives By Sersmentioning

confidence: 92%

“…Besides Au and Ag nanoparticles, other compounds have been explored as SERS substrates either on its own or in combination with Au/AgNPs, such as titanium dioxide [43][44][45][46][47][48], silver vanadate and copper [49], silver molybdate [33], alumina [50,51], nickel [52], graphite (single-wall carbon nanotubes) [53], silicon [54], graphene [41,55],…”

Section: Identification Of Explosives By Sersmentioning

confidence: 99%

“…were deeply studied by Cruz-Montoya et al for nitroexplosives SERS detection, mainly TNT and DNT [43][44][45][46][47][48]. As a summary of all their work, the more relevant results are displayed below.…”

Section: Identification Of Explosives By Sersmentioning

confidence: 99%

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Detection and identification of explosives by surface enhanced Raman scattering

Zapata

Lopez‐López

García-Ruiz

2015

Applied Spectroscopy Reviews

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Surface Enhanced Raman Scattering (SERS) has undergone an important development over the last few years, particularly in the detection and identification of extremely low traces of explosives. The large number of studies and results generated by this increasing research makes a comprehensive overview necessary. This work reviews in detail that research focused on the identification of explosives by SERS, including TNT, DNT, RDX, PETN, TATP, HMTD, perchlorate, etc. either in bulk state, in solution or in vapour phase. In brief, TNT and DNT have been widely studied by SERS due to its aromatic structure and LODs down to 5-10 zg and 10 -17 -10 -13 M have been achieved. The other explosives have been quite less researched; therefore, few results are available to be compared and a bit more modest LODs have been reached such as 10 -13 M for RDX, 10 -4 M for TATP, 5 pg for PETN, or 10 -9 M for perchlorate. In addition, the challenges of detecting both explosives vapours and perchlorate anion by SERS are thoroughly discussed. ExplosiveChemical structure Characteristic normal Raman bands (cm -1 ) SERS bands (cm -1 ) SERS substrate used LOD or minimum amount analysed in molar conc., mass or both Ref.

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Section: Identification Of Explosives By Sersmentioning

confidence: 92%

Section: Identification Of Explosives By Sersmentioning

confidence: 99%

See 1 more Smart Citation

Detection and identification of explosives by surface enhanced Raman scattering

Zapata

Lopez‐López

García-Ruiz

2015

Applied Spectroscopy Reviews

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“…Nonplasmonic substrates including graphene and semiconductor materials generally have low enhancement capabilities; however, their strong charge-transfer properties , have been used effectively with noble nanoparticles for detection of many explosives. Examples include ZnO, graphene oxide, , and TiO 2 . The introduction of oxygen vacancies can improve Raman enhancement of semiconductors, and this can be achieved through surface and atomic defects .…”

Section: Raman Spectroscopymentioning

confidence: 99%

Recent Developments in the Field of Explosive Trace Detection

2020

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Explosive trace detection (ETD) technologies play a vital role in maintaining national security. ETD remains an active research area with many analytical techniques in operational use. This review details the latest advances in animal olfactory, ion mobility spectrometry (IMS), Raman and colorimetric detection methods. Developments in optical, biological, electrochemical, mass and thermal sensors are also covered in addition to the use of nanomaterials technology. Commercially available systems are presented as examples of current detection capabilities and as benchmarks for improvement. Attention is also drawn to recent collaborative projects involving government, academia and industry, to highlight the emergence of multimodal screening approaches and applications. The objective of the review is to provide a comprehensive overview of ETD by; highlighting challenges in ETD and providing an understanding of the principles, advantages and limitations of each technology and relating this to current systems.

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Trace Detection of High Explosives with Nanomaterials

Miao

Parajuli

et al. 2010

Trace Analysis With Nanomaterials

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Enhanced raman spectroscopy of 2,4,6-TNT in anatase and rutile titania nanocrystals

Cited by 3 publications

References 0 publications

Detection and identification of explosives by surface enhanced Raman scattering

Detection and identification of explosives by surface enhanced Raman scattering

Recent Developments in the Field of Explosive Trace Detection

Trace Detection of High Explosives with Nanomaterials

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