Trace detection and differentiation of uranyl(VI) ion cast films utilizing aligned Ag nanorod SERS substrates

Leverette, Chad L.; Villa‐Aleman, Eliel; Jokela, S. J.; Zhang, Zhongyue; Liu, Yongjun; Zhao, Yiping; Smith, Stanley K.

doi:10.1016/j.vibspec.2008.10.006

Cited by 33 publications

(26 citation statements)

References 28 publications

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“…Previous studies have also observed an intense Raman enhancement of uranyl ions adsorbed on Ag substrates with a O@U@O(v 1 ) band located at $710 cm À1 , and ascribed this enhancement to an efficient EM effect [25,27,30]. However, this study firstly demonstrates that the photoinduced CT effect can also tremendously contribute to the Raman enhancement.…”

Section: Resultsmentioning

confidence: 48%

“…Due to its fast response, high sensitivity, and its successful application in the rapid trace analysis of biological molecules [15][16][17], organic pollutants [18][19][20][21][22], and heavy metal ions [23,24], SERS is expected to become an alternative technique for the detection of uranyl. Currently, many studies have reported the SERS of uranyl ions, and the employed SERS substrates are mainly based on Ag nanostructures, such as Ag nanorods arrays [25,26], Ag nanoparticles [27][28][29], Ag-doped sol-gel film [30], etc. These Ag nanostructures have been shown to produce significant Raman enhancements from the uranyl ions located close to their surfaces, which contributes to the trace analysis of uranyl ions.…”

Section: Uranyl (Uo 2 2+mentioning

confidence: 99%

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The contribution of photoinduced charge-transfer enhancement to the SERS of uranyl(VI) in a uranyl-Ag2O complex

Wang

Yang

et al. 2019

Science Bulletin

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Section: Resultsmentioning

confidence: 48%

Section: Uranyl (Uo 2 2+mentioning

confidence: 99%

The contribution of photoinduced charge-transfer enhancement to the SERS of uranyl(VI) in a uranyl-Ag2O complex

Wang

Yang

et al. 2019

Science Bulletin

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“…The recent upsurge in research activities associated with the use of nanorods for biosensing is the result of the unique nature of these materials. Increased popularity of surface-enhanced Raman scattering (SERS) biosensors has resulted in the developments of a number of clever metal nanorod sensing strategies that enhance Raman scattering signals derived from specific target molecules [29,57]. Generally, metal nanorods are synthesized by seed-mediated sequential growth using surfactants or crystal growth in confined region, such as, on anodized aluminum oxide (AAO) membranes [6,19].…”

Section: Nanorodsmentioning

confidence: 99%

Analytical Applications of Nanomaterials in Monitoring Biological and Chemical Contaminants in Food

Lim

Kim

2016

Journal of Microbiology and Biotechnology

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The detection of food pathogens is an important aspect of food safety. A range of detection systems and new analytical materials have been developed to achieve fast, sensitive, and accurate monitoring of target pathogens. In this review, we summarize the characteristics of selected nanomaterials and their applications in food, and place focus on the monitoring of biological and chemical contaminants in food. The unique optical and electrical properties of nanomaterials, such as gold nanoparticles, nanorods, quantum dots, carbon nanotubes, graphenes, nanopores, and polydiacetylene nanovesicles, are closely associated with their dimensions, which are comparable in scale to those of targeted biomolecules. Furthermore, their optical and electrical properties are highly dependent on local environments, which make them promising materials for sensor development. The specificity and selectivity of analytical nanomaterials for target contaminants can be achieved by combining them with various biological entities, such as antibodies, oligonucleotides, aptamers, membrane proteins, and biological ligands. Examples of nanomaterial-based analytical systems are presented together with their limitations and associated developmental issues.

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“…Such nanostructures could promote the generation of “hot spots” that are crucial for SERS enhancement. AgNRs substrates with optimal morphology could generate a SERS EF as high as 10 9 [ 42 ], and have been utilized successfully for the determination of chemical molecules [ 29 , 33 , 37 ], bacteria [ 43 , 44 ], viruses [ 45 , 46 ], amino acids [ 47 ], uranyl ion [ 48 ], polychlorinated biphenyls [ 32 , 34 ], and so forth. Nevertheless, the development of the SERS technique requires substrates that can not only provide giant enhancement, but also are robust, stable, and easy and relatively inexpensive to fabricate and store.…”

Section: Introductionmentioning

confidence: 99%

Ag Nanorods-Oxide Hybrid Array Substrates: Synthesis, Characterization, and Applications in Surface-Enhanced Raman Scattering

Zou

et al. 2017

Sensors

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Over the last few decades, benefitting from the sufficient sensitivity, high specificity, nondestructive, and rapid detection capability of the surface-enhanced Raman scattering (SERS) technique, numerous nanostructures have been elaborately designed and successfully synthesized as high-performance SERS substrates, which have been extensively exploited for the identification of chemical and biological analytes. Among these, Ag nanorods coated with thin metal oxide layers (AgNRs-oxide hybrid array substrates) featuring many outstanding advantages have been proposed as fascinating SERS substrates, and are of particular research interest. The present review provides a systematic overview towards the representative achievements of AgNRs-oxide hybrid array substrates for SERS applications from diverse perspectives, so as to promote the realization of real-world SERS sensors. First, various fabrication approaches of AgNRs-oxide nanostructures are introduced, which are followed by a discussion on the novel merits of AgNRs-oxide arrays, such as superior SERS sensitivity and reproducibility, high thermal stability, long-term activity in air, corrosion resistivity, and intense chemisorption of target molecules. Next, we present recent advances of AgNRs-oxide substrates in terms of practical applications. Intriguingly, the recyclability, qualitative and quantitative analyses, as well as vapor-phase molecule sensing have been achieved on these nanocomposites. We further discuss the major challenges and prospects of AgNRs-oxide substrates for future SERS developments, aiming to expand the versatility of SERS technique.

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Trace detection and differentiation of uranyl(VI) ion cast films utilizing aligned Ag nanorod SERS substrates

Cited by 33 publications

References 28 publications

The contribution of photoinduced charge-transfer enhancement to the SERS of uranyl(VI) in a uranyl-Ag2O complex

The contribution of photoinduced charge-transfer enhancement to the SERS of uranyl(VI) in a uranyl-Ag2O complex

Analytical Applications of Nanomaterials in Monitoring Biological and Chemical Contaminants in Food

Ag Nanorods-Oxide Hybrid Array Substrates: Synthesis, Characterization, and Applications in Surface-Enhanced Raman Scattering

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