Observation of the Surface-Enhanced Raman Scattering Spectrum of Uranyl Ion

Dai, Sheng; Lee, Yuan-Hsiang; Young, J. P.

doi:10.1366/0003702963906122

Cited by 32 publications

(25 citation statements)

References 5 publications

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“…However, the absence of any additional band does not allow a complete identification of this sulphoxyanion. Last, no U (VI) characteristic band is observed, although uranyl is known to exhibit a main peak at 870 cm À1 (Dai et al, 1996) whereas reduced UO 2+x is characterized by bands located at 450, 750 and 1150 cm À1 (Manara and Renker, 2003).…”

Section: Uranium Reduction Observed By Surface Characterization Technmentioning

confidence: 98%

Uptake of uranium and trace elements in pyrite (FeS2) suspensions

Descostes

Schlegel

Eglizaud

et al. 2010

Geochimica et Cosmochimica Acta

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Section: Uranium Reduction Observed By Surface Characterization Technmentioning

confidence: 98%

Uptake of uranium and trace elements in pyrite (FeS2) suspensions

Descostes

Schlegel

Eglizaud

et al. 2010

Geochimica et Cosmochimica Acta

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“…Silver nanomaterials, in general, provide larger signal enhancements versus gold due to the inherent metal permittivity [265]. In addition, native oxide layers that form on silver promote the adsorption of uranyl via oxophilic interactions [237,266,267]. This was confirmed from SERS spectra where a UAO symmetric stretch was observed at 730 and 710–700 cm −1 on silver [266] and silver doped sol-gel substrates [267], respectively.…”

Section: Challenges Opportunities and Visionmentioning

confidence: 99%

Detection and identification of solids, surfaces, and solutions of uranium using vibrational spectroscopy

Haes

Forbes

2018

Coordination Chemistry Reviews

133

128

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The purpose of this review is to provide an overview of uranium speciation using vibrational spectroscopy methods including Raman and IR. Uranium is a naturally occurring, radioactive element that is utilized in the nuclear energy and national security sectors. Fundamental uranium chemistry is also an active area of investigation due to ongoing questions regarding the participation of 5f orbitals in bonding, variation in oxidation states and coordination environments, and unique chemical and physical properties. Importantly, uranium speciation affects fate and transportation in the environment, influences bioavailability and toxicity to human health, controls separation processes for nuclear waste, and impacts isotopic partitioning and geochronological dating. This review article provides a thorough discussion of the vibrational modes for U(IV), U(V), and U(VI) and applications of infrared absorption and Raman scattering spectroscopies in the identification and detection of both naturally occurring and synthetic uranium species in solid and solution states. The vibrational frequencies of the uranyl moiety, including both symmetric and asymmetric stretches are sensitive to the coordinating ligands and used to identify individual species in water, organic solvents, and ionic liquids or on the surface of materials. Additionally, vibrational spectroscopy allows for the in situ detection and real-time monitoring of chemical reactions involving uranium. Finally, techniques to enhance uranium species signals with vibrational modes are discussed to expand the application of vibrational spectroscopy to biological, environmental, inorganic, and materials scientists and engineers.

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“…The very large shift of the uranyl peak can be explained by the strong charge transfer from the silver to the equatorial plane of the absorbed UO 2 2+ , weakening the axial U=O bond intensity, which were also reported in the literature. 16,19,25,29 The broad SERS peak of UO 2 2+ with uncertain peak values implies that the interaction between UO 2 2+ and silver is complicated, and there may be several hydrolyzed uranyl complexes absorbed on the silver surface, several interaction modes between them, or both simultaneously. The charge transfer mechanism between them needs further study.…”

Section: Results and Discussionmentioning

confidence: 99%

In Situ Surface-Enhanced Raman Spectroscopy Detection of Uranyl Ions with Silver Nanorod-Decorated Tape

et al. 2019

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Surface-enhanced Raman spectroscopy (SERS) has been utilized for rapid analysis of uranyl ions (UO 2 2+ ) on account of its fast response and high sensitivity. However, the difficulty of fabricating a suitable SERS substrate for in situ analysis of uranyl ions severely restricts its practical application. Hence, we proposed flexible and adhesive SERS tape decorated with silver nanorod (AgNR) arrays for in situ detection of UO 2 2+ . The SERS tape was fabricated through a simple “paste & peel off” procedure by transferring the slanted AgNR arrays from silicon to the transparent tape surface. UO 2 2+ can be easily in situ detected by placing the AgNR SERS tape into an aqueous solution or pasting it onto the solid matrix surface due to the excellent transparent feature of the tape. The proposed SERS tape with well-distributed AgNRs effectively improved the reproducibility and sensitivity for UO 2 2+ analysis. UO 2 2+ with concentration as low as 100 nM was easily detected. Besides, UO 2 2+ adsorbed on an iron disc and rock surface also can be rapidly in situ detected. With its simplicity and convenience, the AgNR SERS tape-based SERS technique offers a promising approach for environmental monitoring and nuclear accident emergency detection.

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Observation of the Surface-Enhanced Raman Scattering Spectrum of Uranyl Ion

Cited by 32 publications

References 5 publications

Uptake of uranium and trace elements in pyrite (FeS2) suspensions

Uptake of uranium and trace elements in pyrite (FeS2) suspensions

Detection and identification of solids, surfaces, and solutions of uranium using vibrational spectroscopy

In Situ Surface-Enhanced Raman Spectroscopy Detection of Uranyl Ions with Silver Nanorod-Decorated Tape

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